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Warwickshire County Council

Wellesbourne Primary School Annexe

Plant Noise Assessment

April 2019

Executive Park, Avalon Way, Anstey, Leicester, LE7 7GR

Tel: +44 (0)116 234 8000

Email: [email protected]

http://www.wyg.com/

mailto:[email protected]


Document Control

Project: Wellesbourne Primary School

Client: Warwickshire County Council

Job Number: A112162

File Origin: O:\Acoustics Air Quality and Noise\Active Projects\A112162

Document Checking:

Prepared by: Emma Aspinall Environmental Consultant

Initialled: EA

Checked by: Lewis Kelter AMIOA Environmental Consultant

Initialled: LK

Verified by: Nigel Mann MIOA

Director Initialled: NM

Issue Date Status

1 08th February 2019 First Issue

2 15th April 2019 Second Issue – Includes Updated Plant Detail and Mitigation following

consultation responses

3

4

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Contents Page

1.0 Introduction.................................................................................................................................. 1

2.0 Assessment Criteria ....................................................................................................................... 4

3.0 Assessment Methodology .............................................................................................................. 5

4.0 Noise Survey ................................................................................................................................ 9

5.0 Assessment of Key Effects ........................................................................................................... 12

6.0 Conclusions ................................................................................................................................ 13

Appendix Contents

Appendix A – Acoustic Terminology and Abbreviations

Appendix B – Sketches

Appendix C – Manufacturer's Plant Data

Appendix D – Report Conditions

Appendix E – Comments Response to EHO - 20th February 2019

Appendix F – Comments Response to EHO - 07th March 2019

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Noise Assessment

Warwickshire County Council 1 A112162

Wellesbourne Primary School April 2019

1.0 Introduction

1.1 Purpose of this Report

This report presents the finding of a noise assessment undertaken for the new building services plant

associated with the proposed extension at Wellesbourne Primary School Annexe, Warwickshire. This version

of the report incorporates revised plant and mitigation details and includes copies of correspondence received

from local Environmental Health Officers (EHO) for reference.

A description of the existing noise environment in and around the site is provided. Noise surveys have been

undertaken and the results used to verify predictions of the short-term and long-term effects of noise. The

noise levels from the proposed development have been predicted at local representative receptors using

CADNA noise modelling software which incorporates ISO 9613 methodologies and calculations.

A list of acoustic terminology and abbreviations used in this report is provided in Appendix A and a set of

location plans and noise contour plots are presented in Appendix B.

1.2 Legislative Context (England)

This report is intended to provide information relevant to the local planning authority and their consultees

in support of a planning application for the above proposed development. Policy guidance with respect to

noise is found in National Planning Policy Framework (NPPF), published on 19th February 2019. With

regard to noise and planning, NPPF contains the following statement at paragraph 170:

“170. Planning policies and decisions should contribute to and enhance the natural and local

environment by:

e) preventing new and existing development from contributing to, being put at unacceptable risk

from, or being adversely affected by, unacceptable levels of soil, air, water or noise pollution or

land instability. Development should, wherever possible, help to improve local environmental

conditions such as air and water quality, taking into account relevant information such as river

basin management plans

A further 2 short statements are presented at paragraph 180, which state:

“180. Planning policies and decisions should also ensure that new development is appropriate for its

location taking into account the likely effects (including cumulative effects) of pollution on health, living

conditions and the natural environment, as well as the potential sensitivity of the site or the wider area

to impacts that could arise from the development. In doing so they should:

Noise Assessment



a) “mitigate and reduce to a minimum potential adverse impacts resulting from noise from new

development – and avoid noise giving rise to significant adverse impacts on health and the quality

of life

b) identify and protect tranquil areas which have remained relatively undisturbed by noise and are

prized for their recreational and amenity value for this reason.”

Furthermore, paragraphs 182 and 183 state:

“182. Planning policies and decisions should ensure that new development can be integrated

effectively with existing businesses and community facilities (such as places of worship, pubs,

music venues and sports clubs). Existing businesses and facilities should not have unreasonable

restrictions placed on them as a result of development permitted after they were established.

Where the operation of an existing business or community facility could have a significant adverse

effect on new development (including changes of use) in its vicinity, the applicant (or ‘agent of

change’) should be required to provide suitable mitigation before the development has been

completed.

183. The focus of planning policies and decisions should be on whether proposed development

is an acceptable use of land, rather than the control of processes or emissions (where these are

subject to separate pollution control regimes). Planning decisions should assume that these

regimes will operate effectively. Equally, where a planning decision has been made on a particular

development, the planning issues should not be revisited through the permitting regimes operated

by pollution control authorities.”

Planning Practice Guidance (PPG): Noise provides further guidance with regard to the assessment of noise

within the context of Planning Policy. The overall aim of this guidance is, tying in with the principles of the

NPPF and the Explanatory Note of the Noise Policy Statement for England, is to, 'identify whether the

overall effect of noise exposure is, or would be, above or below the significant observed adverse effect

level and the lowest observed adverse effect level for the given situation.’

A summary of the effects of noise exposure associated with both noise generating developments and noise

sensitive developments is presented within the PPG and repeated as follows:

Noise Assessment



Table 1.1 Noise Exposure Hierarchy

Perception Examples of Outcomes Increasing Effect Level Action

Not noticeable No Effect No Observed Effect No Specific Measures

Required

Noticeable and not intrusive

Noise can be heard but does not cause any change in behaviour or attitude. Can slightly affect the acoustic character of the area but not such that there is a

perceived change in the quality of life.

No Observed Adverse Effect (NOAEL)

No Specific Measures Required

Lowest Observed Adverse Effect Level (LOAEL)

Noticeable and intrusive

Noise can be heard and causes small changes in behaviour and/or attitude, e.g. turning up volume of television;

speaking more loudly; closing windows for some of the time because of the

noise. Potential for non-awakening sleep disturbance. Affects the acoustic

character of the area such that there is a perceived change in the quality of life.

Observed Adverse Effect Mitigate and reduce to a

minimum

Significant Observed Adverse Effect Level (SOAEL)

Noticeable and disruptive

The noise causes a material change in behaviour and/or attitude, e.g. having to keep windows closed most of the time, avoiding certain activities during periods

of intrusion. Potential for sleep disturbance resulting in difficulty in

getting to sleep, premature awakening and difficulty in getting back to sleep.

Quality of life diminished due to change in acoustic character of the area.

Significant Observed Adverse Effect

Avoid

Noticeable and very disruptive

Extensive and regular changes in behaviour and/or an inability to mitigate effect of noise leading to psychological

stress or physiological effects, e.g. regular sleep deprivation/awakening; loss

of appetite, significant, medically definable harm, e.g. auditory and non-

auditory

Unacceptable Observed Adverse Effect

Prevent

Noise Assessment



2.0 Assessment Criteria

In order to enable the assessment of the proposed plant in terms of LOAEL and SOAEL, Table 2.1 presents

equivalent noise levels and associated actions with the target noise level criteria identified. The noise level

criteria detailed below have been derived from standard and design guidance:

BS 4142:2014, ‘Methods for rating and assessing industrial and commercial sound’

Table 2.1 Noise Level Criteria and Actions

Effect Level Assessment Noise Level Criteria Action / Justification

No Observed Adverse

Effect Level

Building Services Plant

Source noise levels below background LA90

noise levels

No Action Required Source noise levels below the

background noise is an indication of the sound source having a low impact and

that complaints would be unlikely

Lowest Observed Adverse

Effect Level (LOAEL)

Difference between source noise levels and existing background levels of zero to 5 dB

Action: None Justification: + 5 dB above background is considered an indication of an impact

of marginal significance.

Significant Observed Adverse

Effect Level (SOAEL)

Difference between source noise levels and existing background levels of 5 to 10 dB

Action: Mitigate to achieve less than 5dB

above background if possible:

Justification: Depending on context, a difference of +10dB to be an indication

that complaints are likely.

Unacceptable Observed Adverse

Effect Level (UOAEL)

Difference between source noise levels and existing background levels of greater

than 10 dB

Action: Reduce as far as practicable depending on context

Justification: +10dB above existing

background is an indication of a likely significant adverse impact

Noise Assessment



3.0 Assessment Methodology

3.1 Noise Modelling Methodology

With regard to an assessment of building services plant, three-dimensional noise modelling has been

undertaken based on the monitoring data to predict source noise levels at a large number of locations both

horizontally and vertically. CADNA noise modelling software has been used. This model is based on ISO 9613

noise propagation methodology.

The modelling software calculates noise levels based on the emission parameters and spatial settings that

are entered. Input data, assumptions and model settings as given in the table below have been used.

Table 3.1 Modelling Parameters Sources and Assumptions

Parameter Source Details

Horizontal distances Ordnance Survey Ordnance Survey

Ground levels Site Observations and Ordnance Survey

OS 1:10,000 OS 1:10,000 Panorama contours

Building heights – around site WYGE Observations 4 m height for one storey properties, 8 m height for two storey properties.

Barriers WYGE Observations 1.8m barrier along northern boundary of school playground.

Receptor positions WYGE 1 m from façade, 1.5 m height for bungalows, 4 m height for dormer windows upon bungalows

Proposed Plans Pick Everard Drawing No.: 2433-BRC-EXT-00-DR-M-100; Rev.: P03 Drawing Title: Proposed HVAC Layout; Dated: April 2019

It is acknowledged that a number of these assumptions will affect the overall noise levels presented in this

report. However, it should be noted that certain assumptions made, as identified above, are worst-case.

Noise Assessment



3.2 Model Input Data

3.2.1 Building Services Plant (BSP) Noise Data

It is understood that one Air Handling Unit (AHU) within an enclosed plant room and two air intake louvres

are to be installed to the southeast of the proposed extension. Two heating, ventilation, and air conditioning

(HVAC) units and two exhaust louvres are to be installed along the northern margin of the proposed

extension. The location of the proposed BSP is shown on SK02 of Appendix B. A vertical area source has

been input into the model to represent AHU breakout from the enclosed plant room and louvre breakout

and two point sources are used to represent the proposed HVAC units; manufacturers’ details of the

proposed plant are presented in Table 3.2 below.

Table 3.2 Plant Noise Levels

Description Sound Power Level (dBA)

1 x Swegon Gold F-20-AD-1000499735 (AHU) 74

2 x Air Intake Louvre 66

2 x Exhaust Louvre 81

1 x Epsilon Echos HP 31 (HVAC) 76

1 x PUHZ-ZRP200YKA (HVAC) 62

No insertion loss has been applied to the air intake and exhaust louvres, therefore representing a worst-

case scenario.

Table 3.3 below presents the calculated internal reverberant noise level of the AHU room based on worst-

case assumptions, using A-weighted sound power data from the exhaust air (74 dB) of the Swegon Gold F-

20-AD-10000499735.

Table 3.3 Calculated Reverberant Noise Level for AHU Plant Room

BSP Unit 63 125 250 500 1K 2K 4K 8K

Length 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0

Width 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4

Height 1.7 1.7 1.7 1.7 1.7 1.7 1.7 1.7

RT 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

r distance from source to nearest internal facade

1 1 1 1 1 1 1 1

Q Directivity 4 4 4 4 4 4 4 4

Noise Assessment



BSP Unit 63 125 250 500 1K 2K 4K 8K

Lw 45.8 50.9 60.4 67.8 68.0 68.2 66.0 63.9

Volume of Space 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1

Surface Areas 23.4 23.4 23.4 23.4 23.4 23.4 23.4 23.4

A Total Absorption 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8

Alpha bar 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7

Rc Room Constant 54.5 54.5 54.5 54.5 54.5 54.5 54.5 54.5

SPL 42 47 56 64 64 64 62 60

Calculated Reverberant SPL Based on Number

of Sources

42.0 47.0 56.0 64.0 64.0 64.0 62.0 60.0

Sound Pressure Level 70.2

It has been confirmed that a 300mm deep Sound Block Louvre System (Metador Defender Soundguard –

acoustic louvre doors) is to be installed at the enclosed plant room. This provides a sound reduction of Rw

18 dB. With this attenuation, the output from the AHU plant room with the above reverberant calculations

is 52.2 dB (A).

3.2.2 Building Services Plant (BSP) Operating Conditions

Clarifications from the mechanical engineer regarding the hours of operation and conditions of the plant

have been sought, with the response detailed below:

“General hours of operation for the AHU and AC plant will be as per the normal school hours, allowing for

teaching staff arriving prior to the start of the school day and cleaning staff afterwards – typically 8:00am

to 6:00pm. We would not anticipate HVAC plant to be running for any more than 1 hour each side of these

times to allow for heat-up / cool down.

With regard to frost protection, we have not specified this function, but in any case if such function were

included, running noise levels would be no higher than normal operation.

With regard to defrost mode, this is an automatic function of the specified air-source heat pumps /

condensers. Whilst this function can activate automatically, it would only do so when the units are already

running, within the time range referred to above. Again, running noise levels will be no higher as the units

just goes into reverse mode / cycle.

Finally, regarding the kitchen equipment & extract, this would generally be limited to late morning to

lunchtime.”

As detailed above, the worst-case proposed hours of operation would be between 07:00-19:00 during

weekday periods. Therefore, only daytime hours have been considered within this report.

Noise Assessment



3.3 Sensitive Receptors

The table below summarises receptor locations that have been selected to represent worst-case noise

sensitive receptors with respect to direct noise from the proposed plant. As the surrounding properties are

predominantly bungalows, ground floors of the nearest noise sensitive properties have been presented with

the locations of receptors shown on SK02 in Appendix B. The closest gardens with respect to plant noise

have also been assessed.

Table 3.4 Sensitive Receptor Locations

Ref. Description Height (m)

Daytime

R01 60 Mountford Close 1.5











G01 Garden at 70 Mountford Close 1.2

G02 Garden at 68 Mountford Close 1.2

Noise Assessment



4.0 Noise Survey

4.1 Noise Survey Methodology

A monitoring survey was undertaken to characterise baseline ambient noise levels currently experienced on

the site and to establish the relative local background and traffic noise levels. Equipment used during the

survey included:

Rion NL-52 Environmental Noise Analyser s/n 253701

Rion NL-52 Environmental Noise Analyser s/n 342867

Rion NC-74 Sound Calibrator s/n 35046823

The measurement equipment was checked against the appropriate calibrator at the beginning and end of

the measurements, in accordance with recommended practice, a drift of 0.1 dB was observed. The accuracy

of the calibrators can be traced to National Physical Laboratory Standards, calibration certificates for which

are available on request.

A baseline monitoring survey was undertaken at five locations (as specified in the following table and shown

in SK01 of Appendix B) from Friday 18th January 2019 to Wednesday 23rd January 2019. Attended short term

measurements were undertaken at three locations during day and evening periods with two additional

locations being measured unattended over a 120-hour period. The raw data collected from the long-term

monitoring is available upon request.

Measurements were taken in general accordance with BS 7445-1:2003 The Description and Measurement of

Environmental Noise: Guide to quantities and procedures. Weather conditions during the survey period were

observed as being dry. Anemometer readings confirmed that wind speeds were less than 5 ms-1 at all times

during the survey, with a predominant westerly wind direction during the survey.

Table 4.1 Noise Monitoring Locations

Ref Description

LT1 Northwest corner of the site

LT2 Southeast corner of the site

ST1 South of the site, Mountford Close

ST2 Site access road

ST3 West of the site, Newbold Road

4.2 Noise Survey Results

The ambient noise climate of the area includes road traffic noise from Newbold Road and the A429, as well

as occasional aircraft noise.

Noise Assessment



Ambient and background noise levels are usually described using the LAeq index (a form of energy average)

and the LA90 index (i.e. the level exceeded for 90% of the measurement period) respectively. Road traffic

noise is generally described using the LA10 index (i.e. the level exceeded for 10% of the measurement period).

For the long-term (LT) locations, the presented LAeq,T and LA10,T are average noise levels whilst the LA90 is the

modal noise level of each 5 minute measurement over the stated survey period.

Table 4.2 Meteorological Conditions during the Survey

Survey

Location Date & Time

Temperature

(ºC)

Wind Speed

(m/s)

Wind

Direction

Cloud Cover

(Oktas) Dominant Noise Source

Daytime ST1

23/01/2019 09:42

0 0 - 0 Distant road traffic noise

from Newbold Road,

Daytime ST2

23/01/2019 10:26

0 0 - 0 Distant road traffic noise

from Newbold Road

Daytime ST3

23/01/2019 10:05

0 0 - 0 Road traffic noise Newbold

Road

Evening ST1

23/01/2019 19:57

1 0 - 1 W 4 Distant road traffic from

Newbold Road, occasional aircraft and passing cars

Evening ST2

23/01/2019 19:32

1 0 - 1 W 4 Distant road traffic from

Newbold Road, occasional aircraft

Evening ST3

23/01/2019 19:12

1 0 - 1 W 5 Road traffic noise Newbold

Road

The results of the statistical measurements and frequency measurements conducted during the survey are

summarised in the following table. All values are sound pressure levels in dB (re: 2 x 10-5 Pa).

Table 4.3 Results of Baseline Noise Monitoring Survey (Average Levels)

Period Duration

(T) Monitoring Date and Times Location

LAeq,T (dB)

LAmax,T (dB)

LAmin,T (dB)

LA10,T (dB)

LA90,T (dB)

Weekday Daytime

07:00 - 23:00 48 Hours

18/01/2019 – 23/01/2019 11:27 – 10:52

LT1

61.7 99.3 25.1 54.1 42.0

Weekday Night-time

23:00 – 07:00 24 Hours

18/01/2019 – 23/01/2019 23:00 – 07:00

45.9 79.9 24.3 40.7 33.0

Weekend Daytime

07:00 - 23:00 32 Hours

19/01/2019 – 20/01/2019 07:00 – 23:00

50.7 91.5 19.9 46.9 36.0

Weekend Night-time

23:00 – 07:00 16 hours

19/01/2019 – 20/01/2019 23:00 – 07:00

41.0 68.7 16.0 37.3 28.0

Weekday Daytime

07:00 - 23:00 48 Hours

18/01/2019 – 23/01/2019 11:07 – 10:42

LT2

52.7 88.1 24.7 50.6 42.0

Weekday Night-time

23:00 – 07:00 24 Hours

18/01/2019 – 23/01/2019 23:00 – 07:00

44.1 75.9 23.5 42.7 34.0

Weekend Daytime

07:00 - 23:00 32 Hours

19/01/2019 – 20/01/2019 07:00 – 23:00

49.9 91.8 19.6 46.5 40.0

Weekend Night-time

23:00 – 07:00 16 hours

19/01/2019 – 20/01/2019 23:00 – 07:00

38.0 64.7 16.2 36.1 18.0

Noise Assessment



Period Duration

(T) Monitoring Date and Times Location

LAeq,T (dB)

LAmax,T (dB)

LAmin,T (dB)

LA10,T (dB)

LA90,T (dB)

Daytime 07:00 - 19:00

15 Mins

23/01/2019 09:42 ST1 49.9 72.2 39.2 51.9 43.0

23/01/2019 10:26 ST2 49.0 65.2 38.4 52.8 41.0

23/01/2019 10:05 ST3 64.9 83.3 39.3 69.8 44.8

Evening 19:00 - 23:00

15 Mins

23/01/2019 19:57 ST1 44.9 69.3 33.2 42.2 36.5

23/01/2019 19:32 ST2 50.2 70.6 34.9 48.2 37.8

23/01/2019 19:12 ST3 63.4 81.3 36.4 67.4 39.3

All values are sound pressure levels in dB re: 2x 10-5 Pa

Noise Assessment



5.0 Assessment of Key Effects

5.1 BS 4142 Plant Noise Assessment

This assessment has been undertaken in order to establish the effect of noise from the proposed building

services plant and has been undertaken with the plant operating at full capacity during the daytime period.

The assessment incorporates a 2.0m high acoustic barrier along the southeast corner of the site. The location

of the barrier is illustratively shown on SK02 of Appendix B.

The assessment compares the predicted average noise rating levels from proposed plant with the measured

pre-installation daytime background noise LA90 at the nearest noise sensitive properties. A representative

daytime background LA90 noise level of 36 dB at the closest properties and 40 dB at the closest gardens have

been used. Based on the experience of the assessor of similar plant installations, it is not expected that the

plant would exhibit any tonal characteristics, however, to account for any potential tonal features of the plant

which may be just perceptible at sensitive receptors, an overall +2 dB correction has been applied in line

with section 9.2 of BS 4142:2014.

Table 5.1 Noise Assessment for Proposed BSP

Ref Measured Average

Pre-installation Background LA90

Specific noise level from plant LAeq

Noise Rating Level from Plant LAeq

BS 4142 Score

R01 36 27 29 -7

R02 36 28 30 -6

R03 36 28 30 -6

R04 36 28 30 -6

R05 36 29 31 -6

R06 36 25 27 -9

R07 36 22 24 -12

R08 36 20 22 -14

R09 36 18 20 -16

R10 36 15 17 -19

R11 36 14 16 -20

G01 40 32 34 -6

G02 40 34 36 -4

All values are sound pressure levels in dBA re: 2x 10-5 Pa.

All calculations used to derive the above tables (including averaging of background noise levels and predicted source noise levels) have

been undertaken to 1 decimal place to avoid perpetuation of rounding errors. However, in accordance with BS4142 Para 8.6, the levels

are expressed as integers (with 0.5 dB being rounded up). This may mean that the arithmetic in the above table may appear to be up

to 1 dB incorrect due to this rounding.

The assessment above shows that worst-case plant noise rating levels, with the inclusion of a 2.0m high

acoustic barrier are predicted to be at least 4 dB below background noise levels during the daytime period

at all nearby sensitive receptor locations, which is an indication that an adverse impact is unlikely.

Noise Assessment



6.0 Conclusions

This report presents the finding of a noise assessment undertaken for the new building services plant

associated with the proposed extension at Wellesbourne Primary School Annexe, Warwickshire. The NPPF

gives test points relating to noise; considering these the following conclusions can be drawn:

• NPPF paragraphs 170 (e) & 180 (a)

Rating noise levels from the new building services plant demonstrate that background noise levels will not

be exceeded at nearby noise sensitive receptors during the daytime with the inclusion of a 2.0m high acoustic

barrier. Therefore, the proposed plant is not expected to have a ‘significant adverse impact’ on health or

quality of life.

• NPPF paragraphs 180 (b), 182 & 183

The proposed building services plant is not expected to exceed background noise levels, nor have a significant

contribution to the ambient noise climate during the daytime. Therefore, it is considered that the proposed

plant would not restrict existing businesses whilst the tranquillity of the area, which is characterised by road

traffic noise, will not be to be affected.

Noise Assessment

Warwickshire County Council A112162


Appendices

Noise Assessment



Appendix A – Acoustic Terminology and Abbreviations

An explanation of the specific acoustic terminology referred to within this report is provided below.

dB Sound levels from any source can be measured in frequency bands in order to provide detailed

information about the spectral content of the noise, i.e. whether it is high-pitched, low-pitched, or

with no distinct tonal character. These measurements are usually undertaken in octave or third

octave frequency bands. If these values are summed logarithmically, a single dB figure is obtained.

This is usually not very helpful as it simply describes the total amount of acoustic energy measured

and does not take any account of the ear’s ability to hear certain frequencies more readily than

others.

dB(A) Instead, the dBA figure is used, as this is found to relate better to the loudness of the sound heard.

The dBA figure is obtained by subtracting an appropriate correction, which represents the variation

in the ear’s ability to hear different frequencies, from the individual octave or third octave band

values, before summing them logarithmically. As a result the single dBA value provides a good

representation of how loud a sound is.

LAeq Since almost all sounds vary or fluctuate with time it is helpful, instead of having an instantaneous

value to describe the noise event, to have an average of the total acoustic energy experienced over

its duration. The LAeq, 07:00 – 23:00 for example, describes the equivalent continuous noise level over

the 12 hour period between 7 am and 11 pm. During this time period the LpA at any particular time

is likely to have been either greater or lower that the LAeq, 07:00 – 23:00.

LAmin The LAmin is the quietest instantaneous noise level. This is usually the quietest 125 milliseconds

measured during any given period of time.

LAmax The LAmax is the loudest instantaneous noise level. This is usually the loudest 125 milliseconds

measured during any given period of time.

Ln Another method of describing, with a single value, a noise level which varies over a given time

period is, instead of considering the average amount of acoustic energy, to consider the length of

time for which a particular noise level is exceeded. If a level of x dBA is exceeded for say. 6 minutes

within one hour, then that level can be described as being exceeded for 10% of the total

measurement period. This is denoted as the LA10, 1 hr = x dB.

The LA10 index is often used in the description of road traffic noise, whilst the LA90, the noise level

exceeded for 90% of the measurement period, is the usual descriptor for underlying background

noise. LA1 and LAmax are common descriptors of construction noise.

Rw The weighted sound reduction index determined using the above measurement procedure, but

weighted in accordance with the procedures set down in BS EN ISO 717-1. Partitioning and building

board manufacturers commonly use this index to describe the inherent sound insulation

performance of their products.

Noise Assessment



An explanation of abbreviations used within this report is provided below.

CADNA – Computer Aided Noise Abatement

DMRB – Design Manual for Roads and Bridges

HGV – Heavy Goods Vehicle

PPG – Planning Practice Guidance

UDP – Unitary Development Plan

UKAS – United Kingdom Accreditation Service

WYGE – WYG Environment

Noise Assessment



Appendix B – Sketches

SK01 Noise Monitoring Locations

SK02 Sensitive Receptor Locations, Proposed Extension, Plant and Barrier Location

SK03 Daytime LAeq Contribution from Proposed BSP

LT2

LT1

ST1

ST2

ST3

Newbold Road

Mountford Close

428160

428160

428180

428180

428200

428200

428220

428220

428240

428240

428260

428260

428280

428280

428300

428300

428320

428320

428340

428340

428360

428360

428380

428380

428400

428400

428420

428420

428440

428440

428460

428460

428480

428480

428500

428500

428520

428520

428540

428540

428560

428560

428580

4285802

55

42

0

25

54

20

25

54

40

25

54

40

25

54

60

25

54

60

25

54

80

25

54

80

25

55

00

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20

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55

20

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40

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40

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60

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60

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80

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80

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00

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20

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20

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40

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40

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60

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60

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80

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80

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00

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20

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20

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40

25

57

40

Client:

Warwickshire CountyCouncil

Project:

Wellesbourne PrimarySchool

Project Number:

A112162

Drawing Title / Scenario:

Noise Monitoring Locations

Drawing Number:

SK01

Key:

Site Boundary:

Scale : Not to scale

WYGE Leicester 11.04.19

This map is based upon Ordnance Survey material reproducedby WYG on behalf of Her Majesty's Stationery Office, © Crown Copyright. Unauthorised reproduction infringesCrown copyright and may lead to civil proceedings.

Licence Number AL 553611

Executive ParkAvalon WayAnsteyLeicestershireLE7 7GRTel 0116 234 8000

© WYG Environment

Newbold Road

Mountford Close

HVAC Units

AHU

R01

R02

R03

R04

R05

R06

R07

R08

R09

R10

R11

G01

G02Intake Louvre

Intake Louvre

Exhaust Louvres

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Client:


Project:


Project Number:

A112162


Sensitive ReceptorLocations, ProposedExtension, Plant andBarrier Location

Drawing Number:

SK02

Key:

Site Boundary:

2.0m AcousticBarrier:






© WYG Environment

428160

428160

428180

428180

428200

428200

428220

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428240

428240

428260

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428280

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428340

428340

428360

428360

428380

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428420

428440

428440

428460

428460

428480

428480

428500

428500

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4285802

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Client:


Project:


Project Number:

A112162


LAeq Contribution fromProposed BSP

Drawing Number:

SK03

Key:

Site Boundary:

2.0m AcousticBarrier:

0.0 - 40.0 dB 40.0 - 50.0 dB 50.0 - 60.0 dB > 60.0 dB






© WYG Environment

Noise Assessment



Appendix C – Manufacturer’s Plant Details

AHU Design Technical speci cation

Project: Wellesborne School (G939565)Unit name: AHU1 - AHU1 (Internal) - Design data

Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

GOLD F RXManufactured by Swegon, Kvänum, Sweden

Dimensioning data

Unit size 020

Air density 1.200 kg/m³

Supply air flow 1.400 m³/s

Static pressure drop Outdoor air duct 0 Pa

Supply air duct 200 Pa

Extract air flow 1.000 m³/s

Static pressure drop Extract air duct 200 Pa

Exhaust air duct 0 Pa

Climate data , GreatBritain

Design outdoor temperature, summer 30.0 °C

Design outdoor humidity, summer 50 %

Design outdoor temperature, winter -5.0 °C

Design outdoor humidity, winter 95 %

Supply air temperature, summer 18.0 °C

Supply air temperature, winter 23.0 °C

Key Performance Data

Specific fan power SFPv clean filters 1.25 kW/(m³/s)

Dry-bulb temperature efficiency of supply air 66.9 %

Eurovent Energy Efficiency Class A+ 2016

ErP Commission Regulation (EU) No 1253/2014 Compliant 2018

Casing

Construction Frameless, double skinned panels with mineral wool insulation

Panels 56mm thick with 1mm thick steel sheet inside and out. Outer sheet with grey painted finish

Thermal insulation class T2

Thermal bridging class TB2

Casing leakage class L1(M) / L2(R) according to EN 1886:2007 at -400 Pa and +400 Pa

Casing strength D1(M)

Electrical connections

GOLD F 3-phase, 5-wire, 400 V-10/+15%, 50 Hz, 10 A

Page: 1/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

Functional sections viewedin the direction of air flow

Velocity m/s

Air Temperaturein/out Winter

°C

Air Temperaturein/out Summer

°CPower

kW

DesignPressure drop

Pa

Noise Level dB(A)

Outdoor air duct -0 65End section -8Damper -3Filter 1.71 -113Rotary heat exchanger 2.41 -5.0/6.4 30.0/26.7 -161Fan 1.33 592Cooling coil, water, in casing 2.05 7.1/23.0 30.0/18.0 28.88 -99End section -8Supply air duct -200 74Extract air duct -200 60End section -4Filter 1.15 -41Rotary heat exchanger 1.72 12.0/-3.9 25.0/29.7 -109 Extra pressure drop -11Fan 0.63 370Damper -1End section -5Exhaust air duct -0 74

Sound power to duct, measured according to ISO 5136Noise reduction for function section included to duct.Sound power emitted to surroundings, measured according to ISO 3741

Frequency band 63 125 250 500 1k 2k 4k 8k AllTo supply air duct 72 69 71 71 68 67 63 62 dB 74 dB(A)To outdoor air duct 72 71 71 60 52 49 45 48 dB 65 dB(A)To extract air duct 67 66 67 55 47 45 44 47 dB 60 dB(A)To exhaust air duct 72 67 69 71 68 67 65 65 dB 74 dB(A)To surroundings 67 59 52 56 41 40 37 40 dB 55 dB(A)

GOLD-Unit with control systemComponents are arranged according to airflow direction

Static pressure drop 8 Pa

End section, outdoor air1

Damper motor: With spring return

Damper blade: Uninsulated


Damper, TCSA020G021

Filter class ePM1 50% (F7)

Filter1

Supply airQuantity

Page: 2/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

2x(592x592x520-10)

Velocity in the filter section 1.71 m/s

Recommended design pressure drop 113 Pa

Initial pressure drop 63 Pa

Final pressure drop 163 Pa

Rotary heat exchanger of type RECOnomic

Standard aluminium

Speed controlled

Pressure drop, supply air 161 Pa

Pressure drop, extract air 109 Pa

Extra pressure drop in extract air side (damper) to ensure the right flowdirection

11 Pa

Purging flow including leakage 0.078 m³/s

Dry-bulb temperature efficiency of supply air(83.2% at the same airflow) 66.9 %

Humidity efficiency, supply air, winter 0.0 %

Humidity efficiency, supply air, summer 0.0 %

Annual energy efficiency, dry conditions 34.1 %

Supply air side, winter In OutAir temperature -5.0 6.4 °CRelative humidity 95 42 %Heating power 19.32 kW

Extract air side, winter In OutAir temperature 12.0 -3.9 °CRelative humidity 20 61 %

Supply air side, summer In OutAir temperature 30.0 26.7 °CRelative humidity 50 61 %Cooling power 5.80 kW

Extract air side, summer In OutAir temperature 25.0 29.7 °CRelative humidity 50 38 %

Rotary heat exchanger, GOLD020FRXP011

Fan of type GOLD Wing+

Withdrawable fan with integrated airflow measurement

Direct drive with speed controlled EC motor

Fan1

Page: 3/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

Isolated with internal flexible connection and rubber anti-vibrationmountingStandard connection, internal

Supply air flow 1.400 m³/s

The fan system effect is included in the fan performances

Design static pressure (wet conditions) 592 Pa

Static pressure rise in the SFPv calculation 525 Pa

Temperature rise caused by the fan 0.8 °C

Min speed 280 rpm

Speed in the SFPv calculation 1,417 rpm

Design speed 1,482 rpm

Max speed 1,890 rpm

Design electric power to motor(s) 1.33 kW

Electric power to motor(s) in the SFPv calculation 1.16 kW

Rated motor power 2.40 kW

Motor option 1

Motor code DOMEL 748.3.492

Number of fans/motors in the air stream 1

Overall static efficiency drive 62.5 %

Maximum motor efficiency (incl. motor control 92.0%) 95.0 %

Efficiency grade; FMEG, plenum fan, incl. motor control 72

Regulation(EU)No 327/2011 overall efficiency 66.7 %

Specific fan power efficiency 0.83 kW/(m³/s)

Article number: 80559102

Valve kit heating/cooling

Incl. actuator, freeze guard sensor, connection cable and valve (kvs = 10)

Capacity variant 2

No.of tube rows 6

No.of circuits 14

Connection number 32 ext.

Fin spacing 2.5 mm

Cooling

Pressure drop, dry 82 Pa

Pressure drop, wet 99 Pa

Air velocity 2.05 m/s

Cooling coil, water, in casing, TCKA020G011

Page: 4/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

In OutAir temperature 30.0 18.0 °CRelative humidity 50 88 %

Sensible coil capacity 20.78 kW

Required total coil capacity 28.88 kW

Excess capacity of the coil 34 %

Amount of drained water 0.191 l/min

In OutLiquid temperature 6.0 12.0 °C

Flow of liquid 1.220 l/s

Liquid pressure drop 19.1 kPa

Liquid volume of the coil 16 l

Liquid type Ethylene-glycol

Ethylene-glycol 25 %/kg

Nom. pipe connection size, valve 25 ext.

Liquid pressure drop, open valve 19.4 kPa

Heating

Pressure drop 82 Pa

Air velocity 2.05 m/s

In OutAir temperature 7.1 23.0 °CRelative humidity 40 14 %

Required coil capacity 26.93 kW

Excess capacity of the coil 96 %

In OutLiquid temperature 45.0 40.0 °C

Flow of liquid 1.370 l/s

Liquid pressure drop 19.8 kPa

Liquid volume of the coil 16 l

Accessories

Quantity Product Article name1 Valve kit, heating and cooling TBVL-3-100-1

End section, supply air1

Page: 5/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467



End section, extract air1

Filter class ePM10 60% (M5)

2x(592x592x520-10)

Velocity in the filter section 1.15 m/s

Recommended design pressure drop 41 Pa

Initial pressure drop 21 Pa

Final pressure drop 62 Pa

Filter1

Accessories and technical data, see supply air

Rotary heat exchanger, GOLD020FRXP011

Fan of type GOLD Wing+

Withdrawable fan with integrated airflow measurement

Direct drive with speed controlled EC motor

Isolated with internal flexible connection and rubber anti-vibrationmountingStandard connection, internal

Extract air flow 1.000 m³/s

The fan system effect is included in the fan performances

Design static pressure (wet conditions) 370 Pa

Static pressure rise in the SFPv calculation 350 Pa

Temperature rise caused by the fan 0.5 °C

Min speed 280 rpm

Speed in the SFPv calculation 1,129 rpm

Design speed 1,155 rpm

Max speed 1,890 rpm

Design electric power to motor(s) 0.63 kW

Electric power to motor(s) in the SFPv calculation 0.59 kW

Rated motor power 2.40 kW

Motor option 1

Motor code DOMEL 748.3.492

Fan1

Extract airQuantity

Page: 6/8



Date: 12/04/201915 / 1.0.20190321.1195930

Unit ID: AD-10000503467

Number of fans/motors in the air stream 1Overall static efficiency drive 63.4 %

Maximum motor efficiency (incl. motor control 92.0%) 95.0 %

Efficiency grade; FMEG, plenum fan, incl. motor control 72

Regulation(EU)No 327/2011 overall efficiency 66.7 %

Specific fan power efficiency 0.55 kW/(m³/s)

Damper motor: With spring return

Damper blade: Uninsulated


Damper, TCSA020G021


End section, exhaust air1

TBIQ3201

IQlogic plus (medium)1

TBIQ3201

IQlogic plus (medium)1

TBLZ1741

Air quality sensor duct1

TBLZ153

Mounting bracket for smoke detector and air quality sensor, for round or insulated ducts1

TBLZ164

Conection kit to GOLD1

AccessoriesQuantity

Page: 7/8

Project: Wellesborne School (G939565)Unit name: AHU1 - AHU1 (Internal)Unit ID: AD-1000050346715 / 1.0.20190321.1195930Date: 12/04/2019

GOLD F RX

Unit size 020

Unit weight 892 kg

Duct Component Weight 0 kg

Length, max 2,998 mm

Height, max 1,727 mm

Width, max 1,400 mm

AHU Design Sketch: Inspection side

Connection size

outdoor air 1,000 x 400 mm

supply air 1,000 x 400 mm

extract air 1,000 x 400 mm

exhaust air 1,000 x 400 mm

Outdoor airSupply airExtract airExhaust air

Page: 8/8

Configured unit accessories

1PS - One user-side pump with tank

RA - Anti-freeze heaters

A41N - 415/3+N/50 power supply

RMMT - Maximum and minimum voltage relay

SMAR - Smartlink

AG - Rubber vibration dampers

General description

Air/water unit with hermetic scroll or rotary compressors, plate heat exchanger and axial fans. Refrigerant fluid: R410A.

SPECIFICATIONS

Structure

Made of galvanized sheet-iron coated with polyester powder at 180°C, which makes it highly resistant to weather conditions.The panels can be removed easily to allow full access to internal components.

7035

Compressors

Rotary vane compressors (sizes 6 and 8), complete with thermal overload protection included in the electric motor windings, and rubber vibration damping supports.Hermetic scroll compressors (sizes 10 to 14), complete with thermal overload protection included in the electric motor windings, crankcase heater and rubber vibration damping supports.

Coils

Consists of a row coil with copper tubes and aluminium fins having a large exchange surface. A grille with metal filter is installed as standard to protect the finned pack.

Fans

Epsilon Echos HP 31

Page 1 of 8BlueBoxGroup s.r.l., Via Valletta 5 - 30010 Cantarana di Cona (VE) –Italy

Tel: +39 0426 921111, Fax: +39 0426 302222

www.blueboxcooling.com

Prochill Bluebox

Print Date: 04/05/2019

Axial flow fans, directly coupled to a 6-pole electric motor with external rotor. The protection rating of the motor is IP 54. The fan houses shaped nozzles and includes a safety guard in conformity with standard UNI EN 294.

User-side heat exchanger

made of stainless steel AISI 316 insulated with a shell of closed-cell foam material to reduce heat loss.The use of plate heat exchangers allows us to:- Achieve higher COP/EER;- Reduce the amount of refrigerant in the circuit;- Decrease the size and weight of the unit;- Facilitate maintenance work.

Each heat exchanger is provided with a temperature probe for freeze protection and a probe for measuring the incoming water.

Flow switch

Each unit is provided with user-side paddle flow switch supplied as standard with it.

Refrigerant circuit

The circuit includes:

Charging connections in the liquid and suction line

- liquid sight glass

- dehydrator filter

- thermostatic expansion valve having external pressure equalization

pressure transducer

- high and low pressure switches

safety valve (with the exception of sizes 6, 8 and 10)

In addition to what is present in the basic version, the set-up includes:- 4-way reversing valve- fluid accumulator- second thermostatic valve- check valve check valve

Electrical control panel

The circuit includes:

Main disconnect switch and fuses to protect the auxiliary and power circuits (sizes 14 to 41)

Automatic circuit breaker to protect the auxiliary and power circuits (sizes 6 to 10)

- Compressor contactors

Fan Fan speed regulator for saturation pressure control

Pump relay or overload cutout and contactor for units with user-side hydraulic module

- General alarm clean contacts

Contact for ON/OFF digital input

Enabling of the microprocessor for summer/winter switching and automatic defrosting

Digital input for remote summer/winter switching

Microprocessor

To control the following functions:

- Water temperature control, with inlet control


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


- Freeze protection

- Compressor timings

- High pressure alert management to prevent the unit from stopping in many cases

- Alarm signalling

- Alarm reset

- Self-adjusting control to enable optimal operation even when the water level in the system is low

- Display of the following on the display:

--> Outgoing water temperature

--> High pressure temperature

--> Temperature and differential set points

--> Description of alarms

--> Compressor operation hour meter

Standard power supply [V/ph/Hz]

230/1~/50 for sizes 6 and 8; 400/3N~/50 for sizes from 10 to 41

CONTROLS AND SAFETY DEVICES

All the units are fitted with the following control and safetycomponents:- high pressure switch with manual reset- high pressure safety device with automatic reset, for a limited number of occurrences, managed by the controller- low pressure safety device with automatic reset and limited tripping managed by the controller- high pressure safety valves- antifreeze probe at the outlet of the user-side heat exchangers- differential pressure switch already fitted on the user-side heat exchangers- overtemperature protection for compressors and fans overtemperature protection for compressors and fans

- High pressure switch with manual reset for each compressor;

- Low pressure switch with automatic reset and limited interventions managed by the control;

- High pressure safety valve (with the exception of sizes 6, 8 and 10);

- Protection against overtemperature for compressors;

- Condensation pressure control by means of Fan speed regulator for operation with low external temperatures;

TESTING

All the units are factory-tested and supplied complete with oil and refrigerant.

/1PS

with a circulator (sizes 6 to 18) or circulation pump (sizes 20 to 41), insulated storage tank

Other standard features

Summer/winter selection by digital input

Fitted as standard on all heat pumps. When the unit is switched on, it is always necessary to set an operating mode (heat pump or chiller). This remotely operable contact can be used to change the operating mode even from inside the building and without it being necessary to directly access the microprocessor control.

CONFIGURED UNIT ACCESSORIES DESCRIPTION

RA_anti - Anti-freeze heaters


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


This accessory consists of heaters inserted on the user-side heat exchanger to prevent damage to the hydraulic components due to the formation of ice during periods when the machine is stopped. The power of the anti-freeze heaters is only a few tens of watts depending on the model of unit, namely what is sufficient to prevent breakage of the components. The control monitors (even when the unit is on standby) the heat exchanger outlet probe and when this measures a water temperature below or equal to 5°C (or 2°C below the set point temperature, with differential of 1°C), it switches on the pump (if present) and starts the anti-freeze heater. If the temperature of the outgoing water reaches 4°C (or 3°C below the set point) the anti-freeze alarm will also be triggered; this stops the compressor while keeping the heaters active.

RMMT - Maximum and minimum voltage relay

This device carries out continuous control of the supply voltage of the unit and checks that it is always within an allowable range. If the voltage value stabilizes above or below this range, the device will stop the unit to prevent damage to the electric motors. This device will carry out phase sequence control.

SMAR - Smartlink

This accessory makes it possible to connect the controller of the unit with the controller of a Swegon GOLD™ airhandling unit via a simple serial cable, so allowing their operating logics to be merged into a single consciousness that pursues the maximum energy efficiency of thesystem. The RS485 serial interface is already included and dedicated to connection with Swegon units.

AG - Rubber anti-vibration mounts

These are supplied as a separate package from the unit and must be installed on site following the assembly diagram supplied. They allow you to reduce the vibrations transmitted from the unit to the surface it is standing on.


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


ACCORDING TO EN14511

Unit Epsilon Echos HP

Model 31

Refrigerant fluid R410A

Minimum partialization of the unit % 100

Requested partialization % 100

Cooling conditions

Fluid - User side Ethilene Glycol 25%

Fouling factor - User side m² °C/W 0.0000440

Inlet water temperature - User side °C 12.0

Outlet water temperature - User side °C 6.0

External air temperature °C 35.0

Height asl m 0

Cooling performances

Cooling capacity kW 29.8

Compressors absorbed power kW 9.6

Total absorbed power (A1) kW 10.6

Flow rate - User side l/s 1.26

Pressure drops - User side kPa 49

EER 2.81

ESEER basic unit (ESE) 3.07

Air flow rate m3/h 19000

Available pressure Pa 0

Fans absorbed power kW 0.52

Fans absorbed current A 2.27

Total Fans absorbed power kW 1.04

Total Fans absorbed current A 4.54

Sound levels

Lw_tot COOLING (4) dB(A) 76

Lp_tot COOLING (5) dB(A) 45

Lw_tot HEATING (6) dB(A) 76

Hydaulic module - User side: Cooling mode

Available pressure kPa 107.98

Hydraulic circuit pressure drops kPa 49.00

Pumps absorbed power kW 0.4

Pumps absorbed current A 2.8

(A1) Compressor, fans and pumps power

(5) Lp_tot COOLING- values obtained from the sound power level (conditions: note 4), related to a distance of 10 m from the unit in free field with directivity factor Q=2. Non-binding values.


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


(6) Lw_tot HEATING -unit operating at nominal operating capacity, without any accessories, with external air temperature of 7°C (6°C wb) and user-side heat exchanger water inlet-outlet temperature of 40-45°C. Values obtained from measures taken according to standard ISO 3744.

Reference conditions: External air temperature 35°C; user-side heat exchanger inlet-outlet water temperature 12-7°C.

(ESE) Former Eurovent’s seasonal efficiency index. Value not certified by Eurovent from 2019. Reference: base unit, without any accessories

Heating conditions

Inlet water temperature - User side °C 40.0

Outlet water temperature - User side °C 45.0

External air temperature °C -5.0

External Relative Humidity % 95

Heating performances

Heating capacity kW 27.1

Compressors absorbed power kW 9.3

Total absorbed power (A1) kW 10.4

Flow rate - User side l/s 1.40

Pressure drops - User side kPa 58

COP 2.60

SCOP MT (B2) (-)

ƞ sh MT (B2) % 0

SCOP LT (B2) 3,21(●)

ƞ sh LT (B2) % 125.5

Air flow rate m3/h 19000

Available pressure Pa 0

Fans absorbed power kW 0.52

Fans absorbed current A 2.27

Total Fans absorbed power kW 1.04

Total Fans absorbed current A 4.54

Hydaulic module - User side: Heating mode

Available pressure kPa 85.50

Hydraulic circuit pressure drops kPa 58.23

Pumps absorbed power kW 0.4

Pumps absorbed current A 2.8

(A1) Compressor, fans and pumps power

(B2) with reference to regulation 2013/813 and norm EN 14825. The SCOP LT value is certified by Eurovent for units with Pdesign <70 kW

(ErP legenda) – Not ErP compliant • ErP compliant o ErP compliant only with option VEC (EC fans)

Compressors

Type Scroll

Number 1

Refrigerant circuits 1

Total oil charge kg 2.8

Total refrigerant charge (estimated) (NRef) kg 13.0

Fans

Type Axial-STD


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


Number 2

Rated absorbed power kW 0.60

Rated absorbed current A 2.62

Heat exchanger - User side

Type Plates

Number 1

Water content l 2.3

Dimensions

Length mm 1306

Width mm 715

Height mm 2050

Weight

Net weight kg 362

(NRef) The indicated refrigerant charge is theoretical and refers to the standard machine without accessories.

Hydraulic module - User side

Number of pumps 1

Rated absorbed power kW 0.60

Rated absorbed current A 2.8

Maximum pressure hydraulic circuit kPa 600

Storage tank l 140.0

ELECTRICAL DATA (Theoretical calculations)

Power supply V/ph/Hz 415/3N~/50 ±10%

Control power supply V/ph/Hz 230/1~/50

Electrical performances

Maximum absorbed power (E1) kW 15.70

Maximum starting current - LRA A 106.3

Full load current - FLA A 28.2

(E1) Mains power supply to allow unit operation

Technical calculations may change according to calculation methods. Techical data may be revised.

Conformity Ecodesign

CE marked unit, compliant to Ecodesign (regulation 2013/813) according to SCOP. The unit can be installed in EU countries.

Data referred to the selected unit, any configuration change may not guarantee the performance and compliance to Ecodesign.


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


SOUND LEVEL

SoundLevel

63 [Hz] 125 [Hz] 250 [Hz] 500 [Hz] 1000 [Hz] 2000 [Hz] 4000 [Hz] 8000 [Hz]

Lw [dB] 81 79 80 74 69 65 58 51 Lw_tot dB(A) 76

Lp [dB] 49 47 48 42 37 33 26 19 Lp_tot dB(A) 45


Tel: +39 0426 921111, Fax: +39 0426 302222


Prochill Bluebox


Sample Construction Code Format Diagram

Construction Code Definitions

Code Section Code Description

Model S Rectangular attenuator with SPLITTER elements

Base material G Standard gauge galvanised sheet steel

No. delivery sections 01 upwards This number confirms how many sections will be delivered to site for each attenuator or splitter. For02 or above assembly will be required by others

Element type H Elements installed in the horizontal plane

V Elements installed in the vertical plane

Pressure rating 3 High pressure (+2000/-750Pa)

End connections C 30mm profile flanges (profile flanges are compatible with Doby, Mez & Metu flanges)

Packing L Lightweight pallet wrapping on casing ends (EG/IG units are palletised and wrapped on the pallet)

Optional features M Infill protected by Melinex polyester film

S Side elements (for EG/IG units these are supplied with steel backing)

Attenuator Construction Code Definitions

Project: Wellesbourne School Date: 09/04/2019

Page 5 of 7

Document Package 94390/2/1/1

Direct Telephone 01756 708768

Direct E-Mail [email protected]

09/04/2019

Construction Codes confirm the physical properties of each item. This drawing must therefore be read in conjunction with the Construction Code Definitions.

Project: Wellesbourne School Date:

Dimensions W1, H1, W2, H2, WD1, HD1 are always shown as "inside-duct". Dimensions L1, L2, LD1 are always shown as "over connections".

SG splitter attenuator - with profile flanges

W1

Primary Dimensions

Ref. Construction Code H1 L1 Paint Colour Wt (Kg)No.OffNDLLD1

Delivery Data

FlangeSize

1000ATT/01 SG01H/3C/L/S 400 900 48 1900 1 30mm

900ATT/02 SG01H/3C/L/S 400 2400 110 12400 1 30mm

750ATT/03 SG01V/3C/L/S 400 2100 94 12100 1 30mm

750ATT/04 SG01V/3C/L/S 400 1800 83 11800 1 30mm

750ATT/05 SG01V/3C/L/SM 400 1800 86 11800 1 30mm

750ATT/06 SG01V/3C/L/SM 400 1800 86 11800 1 30mm

Attenuator Drawings

Page 6 of 7




Noise Data TypeNoise Data Source 8k4k2k1k50025012563Total Static

Pressure (Pa)Vol

(m³/s)Description

Octave band mid frequency (Hz)

Ref.

01.40AHU FRESH AIR INTAKE 69 67 62 59 56 57 61 59Manufacturer In-duct LwATT/01

01.40AHU SUPPLY AIR OUT 74 70 77 74 73 66 63 58Manufacturer In-duct LwATT/02

01.40AHU EXTRACT AIR IN 71 68 67 57 58 58 66 64Manufacturer In-duct LwATT/03

01.40AHU EXHAUST AIR OUT 77 74 83 78 78 72 68 63Manufacturer In-duct LwATT/04

00.00

Equipment Noise Data Schedule

Project: Wellesbourne School Date: 09/04/2019

Page 7 of 7




Noise Assessment



Appendix D – Report Conditions

This Report has been prepared using reasonable skill and care for the sole benefit of Warwickshire County

Council (“the Client”) for the proposed uses stated in the report by WYG Environment Planning Transport

Limited (“WYG”). WYG exclude all liability for any other uses and to any other party. The report must not be

relied on or reproduced in whole or in part by any other party without the copyright holder’s permission.

No liability is accepted or warranty given for; unconfirmed data, third party documents and information

supplied to WYG or for the performance, reliability, standing etc of any products, services, organisations or

companies referred to in this report. WYG does not purport to provide specialist legal, tax or accounting

advice.

The report refers, within the limitations stated, to the environment of the site in the context of the

surrounding area at the time of the inspections'. Environmental conditions can vary and no warranty is given

as to the possibility of changes in the environment of the site and surrounding area at differing times. No

investigative method can eliminate the possibility of obtaining partially imprecise, incomplete or not fully

representative information. Any monitoring or survey work undertaken as part of the commission will have

been subject to limitations, including for example timescale, seasonal and weather-related conditions. Actual

environmental conditions are typically more complex and variable than the investigative, predictive and

modelling approaches indicate in practice, and the output of such approaches cannot be relied upon as a

comprehensive or accurate indicator of future conditions. The “shelf life” of the Report will be determined by

a number of factors including; its original purpose, the Client’s instructions, passage of time, advances in

technology and techniques, changes in legislation etc. and therefore may require future re-assessment.

The whole of the report must be read as other sections of the report may contain information which puts

into context the findings in any executive summary.

The performance of environmental protection measures and of buildings and other structures in relation to

acoustics, vibration, noise mitigation and other environmental issues is influenced to a large extent by the

degree to which the relevant environmental considerations are incorporated into the final design and

specifications and the quality of workmanship and compliance with the specifications on site during

construction. WYG accept no liability for issues with performance arising from such factors.

Noise Assessment



Appendix E – Comments Response to EHO – 20th

February 2019

A112162 February 2019

A112162 20th February 2019

Response to comments from Ben Ellis, Environmental Health Officer Stratford-on-Avon

District Council, received on 14th February 2019.

WYG Responses in Blue

SoADC Comment 1

There is not enough information to accurately assess the impacts from this development at this time.

Further information is required in particular - Assumptions made in the propagation model including:

1. Assumptions used for ground hardness and other factors in ISO 9613

2. As submitted plan is not to scale- distances used from sources to receptors

3. Attenuated louvres from AHU- what is the internal plant room noise including reflection. What is the

resulting external noise level taking into account size and construction of louvres

4. The propagation model shows some attenuation provided by fences at the rear gardens of noise sensitive

receptors- what is the construction of this fence and how has it been accounted for in the model

5. What, if any, attenuation has been presumed from the hit and miss fencing surrounding the HVAC units

6. Will there be any noise breakout from the ducting in the roof space

WYG Response 1

1. Hard ground has been used at all locations within the models with ground absorption set to 0,

representing a worst-case scenario.

2. Table 1.0 below documents the distances from the proposed plant to the closest receptors.

Table 1.0 Sensitive Receptor Locations and Distance to Source

Ref. Description Closest Source Approximate Distance To Source (m)

R01 60 Mountford Close AHU 90









R10 78 Mountford Close HVAC 98

R11 80 Mountford Close HVAC 112

3. The sound power level of sound break out from the Geniox 14DR AHU is 56 dB(A). The breakout from

the AHU plant room has been included in the model as a vertical area source at 4.1m across and 3.0m high


on the southeast façade of the proposed extension. The vertical area source does not include the effects

of additional louvres associated with the AHU, which would be likely to provide additional noise attenuation,

so transmission loss is assumed to be 0. Therefore, the modelling of the breakout associated with the AHU

is considered to represent a worst-case scenario. All manufacturers’ data associated with the plant is

appended to this document.

4. From on-site observations, the garden fences at the closest receptors are constructed of solid timber,

which have been included in the models as a solid barrier at 1.8m high, which is the standard height for

most garden fences.

5. No attenuation has been included with respect to the hit and miss fencing surrounding the HVAC units,

therefore representing a worst-case scenario.

6. It is understood there will be no noise breakout from ducting in the roof space (which will be located

internally within the building) as the building itself would contain the casing breakout. Furthermore, casing

noise breakout would typically be at least 10 dB lower than from the external termination point and would

have an overall negligible contribution to noise levels when compared to the proposed AHU and HVAC units

to be installed.

SoADC Comment 2

Sound measurements:

7. Justification for measurement locations

8. How does the LAeq and LA90 level change throughout the day- please provide results broken into 1hr periods

(daytime) and 15 Mins (Night time) for the long term measurements. What is the min, max and modal and

average 1hr average (daytime) and 15 mins (night time)

9. What was the weather like during this long term monitoring

10. How do the measurements taken at the LT monitoring sites compare with the attended measurements

WYG Response 2

7. The noise monitoring locations were selected due to their proximity to the closest sensitive receptors

and distances from existing noise sources including the existing school and surrounding road network. The

monitoring locations are therefore considered to suitably represent background level (LA90) in accordance

with the requirements of BS 4142:2014.

8. Tables A1 and A2 within the appendix of this document detail the hourly breakdown of both the long-

term measurements (LT1 and LT2) for the LAeq and LA90 (rounded), including the minimum, maximum and

modal values for daytime and night-time hours during both weekdays and weekends.


Within the BS 4142 assessment, a background level of 36 dB (weekend daytime LA90) for daytime hours

and 28 dB (weekend night-time LA90) for night-time hours were considered to represent typical background

levels when the school was not in use, as shown in the summary table provided in Table 4.3 of the Noise

Technical Report, with data from LT1 used, as it is located next to the closest sensitive receptors. It is

understood that the plant will only operate during weekday hours, however, overall background levels

measured during weekend hours were lower than those measured during the weekday period, and so were

used to represent a worst-case. It is also understood that the plant is unlikely to be operational during

night-time hours, however this was assessed to demonstrate that if the plant were to be operational during

the night-time, noise levels would still fall below existing background noise levels at all sensitive receptors.

Although monitoring location LT2 lies closer to sensitive receptors R08-R11, if baseline data from this

location were to be used (daytime LA90 levels of 40 dB and night-time LA90 levels of 18 dB) noise rating

levels from the plant would still fall at or below background levels during the daytime and night-time

periods.

9. Weather data from Wellesbourne Airfield was reviewed, which identifies that conditions during the long-

term monitoring were observed as being mainly dry, with average temperatures between 2o and 4O Celsius

with wind speeds of up to 7kts (3.6 m/s). Further meteorological conditions observed during the short-

term monitoring period are detailed in Table 4.2 of the Noise Technical Report.

10. Short-term measurements were undertaken during the daytime period (07:00-23:00). The results are

summarised in Table 4.3 of the Noise Technical Report. The LAeq and LA90 levels from at the long-term

monitoring locations and the short-term monitoring locations match closely as shown below in Table 2.0.

Table 2.0 Comparison of Long-term and Short-term Monitoring

Monitoring LAeq (dB) LA90 (dB)

Long-term 49.9-61.7 36.0-42.0

Short-term 44.9-64.9 36.5-44.8

SoADC Comment 3

Background sound levels:

11. How were the representative background sound levels at the noise sensitive properties derived for the

BS4142 assessment how does this compare to the worst case 1hr (daytime) or 15 min (night-time) period

WYG Response 3

11. Considered in Response 2 (8).


SoADC Comment 4

Sound sources:

12. More information is required into the hours of operation of the various pieces of equipment including their

hours of operation

13. The assessment has assumed a 2dB penalty for tonality Is a penalty for intermittency also appropriate

given hours and times of operation

14. If it is the authors experience that tonal noise is not attributable to this type of equipment but that it is

likely to be otherwise distinguishable against the residual acoustic environment a penalty of 3db should be

applied

15. Do the HVAC have defrost mode and what sound level is this. Is this an automatic function that can occur

at night

16. The extract louvre from the kitchen extraction doesn’t seem to be assessed- this is apparently located at a

high level to the North East of the proposal. What is the impact of this noise on the assessment

WYG Response 4

12, 15 & 16. The assessment has been undertaken assuming all items of plant are working at full capacity,

simultaneously during daytime and night-time hours, to present a robust assessment, even though it is not

anticipated to occur. Clarification from the mechanical engineer regarding points 12, 15 and 16 have been

sought, with the response detailed below:

“General hours of operation for the AHU and AC plant will be as per the normal school hours, allowing for

teaching staff arriving prior to the start of the school day and cleaning staff afterwards – typically 8:00am

to 6:00pm. We would not anticipate HVAC plant to be running for any more than 1 hour each side of these

times to allow for heat-up / cool down.

With regard to frost protection, we have not specified this function, but in any case if such function were

included, running noise levels would be no higher than normal operation.

With regard to defrost mode, this is an automatic function of the specified air-source heat pumps /

condensers. Whilst this function can activate automatically, it would only do so when the units are already

running, within the time range referred to above. Again, running noise levels will be no higher as the units

just goes into reverse mode / cycle.

Finally, regarding the kitchen equipment & extract, this would generally be limited to late morning to

lunchtime.”

As detailed above, the worst-case proposed hours of operation would be between 07:00-19:00 during

weekday periods. During these hours, noise levels are predicted to be up to 10dB below background levels

and would therefore have no impact on the closest sensitive receptors

The kitchen extract louvre is located on the northern façade of the proposed extension, which faces away

from the closest sensitive receptors. Also, as detailed above, the extract louvre would only be used during


late morning to lunchtime hours. As the noise levels from the AHU and HVAC fall at least 10 dB below

background levels during the daytime, it is unlikely that noise from the kitchen extract louvre will have an

adverse impact on sensitive receptors.

13 & 14. The proposed plant is not expected to have any tonal features that would be readily distinguishable

against the existing background, however as a worst-case assumption, a 2 dB penalty for any potential

tonal elements that may be just perceptible was applied. No further corrections were added as predicted

noise levels during the daytime are 10 dB below the background noise level which would be imperceptible

and indistinguishable when, for instance switching on.

SoADC Comment 5

What is the impact of uncertainty in the assessment including uncertainty in propagation, source sound

levels, and deriving background measurements.

WYG Response 5

Guidance presented in BS 4142:2014 details steps necessary to reduce uncertainty within assessments.

The points below detail the steps taken to reduce uncertainty within the assessment:

• Noise source data from the AHU and HVAC units has been taken from published manufacturer’s data

(appended to this document). The sound power levels have been used within the model, with no

attenuation provided from the louvre associated with the AHU and hit and miss fencing around the HVAC

units, therefore representing a worst-case scenario.

• The locations selected for the noise monitoring survey were chosen as they represent the closest sensitive

receptors in terms of proximity to the proposed plant reducing the uncertainty level of the residual noise

environment prior to installation of the plant.

• The long-term monitoring was also carried out over weekday and weekend periods, even though the likely

operational hours of the plant is weekday only.

• Hard ground has been used in the models as this provides no attenuation between the proposed plant and

closest receptors therefore the noise propagation characteristics are considered to be representative of a

worst-case scenario.

• As detailed in response 2 (8), worst-case background levels were chosen from the LT1 weekend period to

determine background noise levels in the absence of contributions from the existing school, even though

the plant is likely to only be operational during the weekday period. A night-time assessment was also

undertaken even though the plant is only to be operational during the daytime. The assessment therefore

represents a worst-case scenario.

• All monitoring equipment was appropriately calibrated as detailed in Section 4.0 of the Noise Technical

Report.

Emma Aspinall Sam Moran Environmental Consultant Associate


Appendices

Hourly Breakdown of Long-term Data

Table A1 LT1 Hourly Breakdown

Time Weekday Saturday Sunday

LAeq LA90 LAeq LA90 LAeq LA90

Night-time

23:00 44.4 36.0 29.7 21.0 36.7 31.0

00:00 42.5 34.0 39.4 29.0 26.1 18.0

01:00 35.2 30.0 36.0 26.0 24.7 16.0

02:00 34.2 30.0 36.3 27.0 27.4 17.0

03:00 36.2 32.0 39.8 29.0 25.7 18.0

04:00 36.7 33.0 45.3 36.0 36.3 22.0

05:00 41.6 35.0 44.5 35.0 32.0 23.0

06:00 53.7 39.0 48.0 39.0 45.2 29.0

Min 34.2 30.0 29.7 21.0 24.7 16.0

Max 53.7 39.0 48.0 39.0 45.2 31.0

Mode - 30.0 36.0 29.0 26.0 18.0

Daytime

07:00 56.9 43.0 55.4 39.0 57.0 32.0

08:00 61.0 44.0 50.1 39.0 55.7 32.0

09:00 57.0 42.0 47.8 38.0 54.8 33.0

10:00 63.0 46.0 48.3 37.0 53.1 34.0

11:00 59.4 41.0 48.2 38.0 57.2 32.0

12:00 70.3 51.0 46.1 36.0 53.4 33.0

13:00 57.9 41.0 46.5 35.0 48.3 34.0

14:00 68.2 46.0 47.4 32.0 48.9 34.0

15:00 56.9 44.0 46.0 32.0 52.9 33.0

16:00 52.8 40.0 47.2 34.0 54.6 34.0

17:00 49.4 41.0 44.1 33.0 44.8 35.0

18:00 44.8 40.0 38.1 32.0 40.8 36.0

19:00 46.5 39.0 34.8 29.0 40.9 36.0

20:00 42.9 36.0 31.8 25.0 41.0 36.0

21:00 42.8 36.0 32.1 23.0 40.4 35.0

22:00 44.0 38.0 32.5 22.0 38.9 33.0

Min 42.8 36.0 31.8 22.0 38.9 32.0

Max 70.3 51.0 55.4 39.0 57.2 36.0

Mode 57.0 41.0 48.0 32.0 53.0 33.0

Table A2 LT2 Hourly Breakdown



Night-time

23:00 45.3 36.0 34.4 20.0 39.2 31.0

00:00 44.2 34.0 34.5 26.0 31.8 17.0

01:00 37.9 31.0 30.3 23.0 28.7 16.0

02:00 37.0 30.0 31.7 23.0 28.0 16.0

03:00 38.0 32.0 35.7 26.0 30.4 17.0




04:00 39.0 33.0 40.5 32.0 36.9 19.0

05:00 42.6 37.0 40.9 32.0 32.5 21.0

06:00 50.0 41.0 44.5 36.0 42.9 27.0

Min 37.0 30.0 30.3 20.0 28.0 16.0

Max 50.0 41.0 44.5 36.0 42.9 31.0

Mode 38.0 - 41.0 26.0 - 17.0

Daytime

07:00 51.3 45.0 45.7 36.0 47.5 33.0

08:00 52.9 46.0 45.6 37.0 46.9 33.0

09:00 53.3 43.0 45.1 37.0 52.8 33.0

10:00 56.1 43.0 47.6 36.0 58.0 34.0

11:00 57.2 43.0 45.0 37.0 46.9 34.0

12:00 57.6 46.0 44.8 36.0 56.0 36.0

13:00 53.1 42.0 45.7 35.0 52.3 36.0

14:00 53.5 43.0 44.3 33.0 46.0 36.0

15:00 54.3 43.0 46.3 34.0 53.3 37.0

16:00 46.8 40.0 45.7 33.0 58.9 38.0

17:00 48.0 41.0 40.2 32.0 44.1 38.0

18:00 45.9 40.0 38.8 30.0 43.6 38.0

19:00 46.9 39.0 35.3 27.0 44.2 37.0

20:00 43.8 36.0 37.6 23.0 44.1 37.0

21:00 43.0 35.0 35.6 21.0 43.4 36.0

22:00 44.5 38.0 35.7 21.0 42.0 34.0

Min 43.0 35.0 35.3 21.0 42.0 33.0

Max 57.6 46.0 47.6 37.0 58.9 38.0

Mode 53.0 43.0 46.0 36.0 44.0 36.0


Manufacturers’ Plant Data

PKA-M R410A

Power Inverter Heat Pump

Wall Mounted SystemAir Conditioning

Key Features

Improved airflow control, including adjustable louvres for uniform air distribution

Internal pipe connection to wall mounted unit for easy and neat installation

CN22 connector as standard for connection to PAR-33MAA hard wired controller

Replace Technology available

The PKA-M Power Inverter range is a wall mounted system that blends a host ofoutstanding features with a sophisticated flat panel, streamlined design. Offering highseasonal efficiency, advanced control options and quiet operation, this range providesextreme flexibility and ease of installation.

Product Information

PKA-M R410A

Power Inverter Heat Pump

Wall Mounted SystemAir Conditioning

Product Information

PRODUCT DIMENSIONS

Upper View

CAPACITY (kW) Heating (nominal)

Cooling (nominal)

Heating (UK)

Cooling (UK)

SHF (nominal)

COP / EER (nominal)

SCOP / SEER (BS EN14825)

ErP ENERGY EFFICIENCY CLASS Heating/Cooling

AIRFLOW (l/s) Lo-Mi-Hi

PIPE SIZE mm (in) Gas

Liquid

SOUND PRESSURE LEvEL (dBA)

SOUND POWER LEvEL (dBA)

DIMENSIONS (mm) Width x Depth x Height

WEIGHT (kg)

ELECTRICAL SUPPLY

FUSE RATING (BS88) - HRC (A)

INTERCONNECTING CABLE No. Cores

WIRED REMOTE CONTROLLER REFERENCE

WIRELESS REMOTE CONTROLLER REFERENCE

PKA-M - INDOOR UNITS

4.1 (1.6-5.2)

3.6 (1.6-4.5)

3.5 (1.35-4.4)

3.3 (1.45-4.15)

0.81

3.83 / 3.83

3.9 / 5.9

A / A+

150-175-200

12.7 (1/2”)

6.35 (1/4”)

36-40-43

60

898 x 249 x 295

13

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

5.0 (2.5-7.3)

4.6 (2.3-5.6)

4.25 (2.15-6.2)

4.23 (2.1-5.15)

0.72

3.33 / 3.26

4.0 / 5.4

A+ / A

150-175-200

12.7 (1/2”)

6.35 (1/4”)

36-40-43

60

898 x 249 x 295

13

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

7.0 (2.8-8.2)

6.1 (2.7-6.7)

5.95 (2.4-6.95)

5.5 (2.5-6.15)

0.86

3.57 / 3.81

4.2 / 6.5

A+ / A++

300-333-367

15.88 (5/8”)

9.52 (3/8”)

39-42-45

64

1170 x 295 x 365

21

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

8.0 (3.5-10.2)

7.1 (3.3-8.1)

6.8 (3.0-8.65)

6.55 (3.05-7.45)

0.78

3.65 / 3.94

4.3 / 6.7

A+ / A++

300-333-367

15.88 (5/8”)

9.52 (3/8”)

39-42-45

64

1170 x 295 x 365

21

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

11.2 (4.5-14.0)

9.5 (4.9-11.4)

9.5 (3.85-11.9)

9.2 (4.5-10.5)

0.73

3.68 / 3.96

4.1 / 6.3

A+ / A++

333-383-433

15.88 (5/8”)

9.52 (3/8”)

41-45-49

65

1170 x 295 x 365

21

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

PKA-M35HA PKA-M50HA PKA-M60KA PKA-M71KA PKA-M100KA

PUHZ-ZRP - OUTDOOR UNITS

SOUND PRESSURE LEvEL (dBA) Heating/Cooling

SOUND POWER LEvEL (dBA) Cooling

WEIGHT (kg)

DIMENSIONS (mm) Width x Depth x Height

ELECTRICAL SUPPLY

PHASE

Heating/Cooling (nominal)

Heating/Cooling (UK)

STARTING CURRENT (A)

SYSTEM RUNNING CURRENT (A) Heating/Cooling [MAX]

FUSE RATING (BS88) - HRC (A)

MAINS CABLE No. Cores

MAX PIPE LENGTH (m)

MAX HEIGHT DIFFERENCE (m)

CHARGE REFRIGERANT (kg) / CO2 EQUIvALENT (t)

R410A (GWP 2088) - 30m

MAX ADDITIONAL REFRIGERANT (kg) / CO2 EQUIvALENT (t)

R410A (GWP 2088)

46 / 44

65

43

809 x 300 x 630

220-240v, 50Hz

Single

1.07 / 0.94

0.89 / 0.80

4.0

4.22 / 3.94 [13.4]

16

3

50

30

2.20 / 4.59

0.40 / 0.84

46 / 44

65

46

809 x 300 x 630

220-240v, 50Hz

Single

1.50 / 1.41

1.26 / 1.20

5.0

7.16 / 6.59 [13.4]

16

3

50

30

2.40 / 5.01

0.40 / 0.84

48 / 47

67

70

950 x 330 + 30 x 943

220-240v, 50Hz

Single

1.96 / 1.60

1.64 / 1.36

5.0

9.23 / 8.11 [19.4]

25

3

50

30

3.50 / 7.31

1.20 / 2.51

48 / 47

67

70

950 x 330 + 30 x 943

220-240v, 50Hz

Single

2.19 / 1.80

1.84 / 1.53

6.0

8.75 / 7.79 [19.4]

25

3

50

30

3.50 / 7.31

1.20 / 2.51

51 / 49

69

116

1050 x 330 + 40 x 1338

220-240v, 50Hz

Single

3.04 / 2.40

2.55 / 2.04

12.0

11.35 / 11.26 [27.1]

32

3

75

30

5.00 / 10.44

2.40 / 5.01

PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 PUHZ-ZRP100VKA3

11.2 (4.5-14.0)

9.5 (4.9-11.4)

9.5 (3.85-11.9)

9.2 (4.5-10.5)

0.73

3.68 / 3.96

4.1 / 6.2

A+ / A++

333-383-433

15.88 (5/8”)

9.52 (3/8”)

41-45-49

65

1170 x 295 x 365

21

Fed by Outdoor Unit

6

4

PAR-33MAA

PAR-FL32MA

PKA-M100KA

51 / 49

69

123

1050 x 330 + 40 x 1338

380-415v, 50Hz

Three

3.04 / 2.40

2.55 / 2.04

4.0

4.06 / 4.03 [8.6]

16

5

75

30

5.00 / 10.44

2.40 / 5.01

PUHZ-ZRP100YKA3

SYSTEM POWERINPUT (kW)

Three Phase3

3

197

387 192

599

249 5

155688

898

55

295

65.2

423.7 431.7

1114

0.3

5295

1

1170

365

74 (855) 241

PKA-M35/50HA PRODUCT DIMENSIONS PKA-M60/71/100KA

UNITED KINGDOM Mitsubishi Electric Europe Living Environment Systems Division

Travellers Lane, Hatfield, Hertfordshire, AL10 8XB, England General Enquiries Telephone: 01707 282880 Fax: 01707 278881

IRELAND Mitsubishi Electric Europe Westgate Business Park, Ballymount, Dublin 24, Ireland

Telephone: Dublin (01) 419 8800 Fax: Dublin (01) 419 8890 International code: (003531)

Telephone: 01707 282880email: [email protected]

web: airconditioning.mitsubishielectric.co.uk

Note: The fuse rating is for guidance only. Please refer to the relevant databook for detailed specification. It is the responsibility of a qualified electrician/electrical engineer to select the correct cable size and fuse rating based on current regulationand site specific conditions. Mitsubishi Electric’s air conditioning equipment and heat pump systems contain a fluorinated greenhouse gas, R410A (GWP:2088), R32 (GWP:675), R407C (GWP:1774) or R134a (GWP:1430). *These GWPvalues are based on Regulation (EU) No 517/2014 from IPCC 4th edition. In case of Regulation (EU) No.626/2011 from IPCC 3rd edition, these are as follows. R410A (GWP:1975), R32 (GWP: 550), R407C (GWP:1650) or R134a (GWP:1300).

Country of origin: United Kingdom – Japan – Thailand – Malaysia. ©Mitsubishi Electric Europe 2017. Mitsubishi and Mitsubishi Electric are trademarks of Mitsubishi Electric Europe B.V. The company reserves the right to make any variation intechnical specification to the equipment described, or to withdraw or replace products without prior notification or public announcement. Mitsubishi Electric is constantly developing and improving its products. All descriptions, illustrations,drawings and specifications in this publication present only general particulars and shall not form part of any contract. All goods are supplied subject to the Company’s General Conditions of Sale, a copy of which is available on request.Third-party product and brand names may be trademarks or registered trademarks of their respective owners.

Effective as of September 2017

Front View

Side View Upper View

Front View

Side View

Quotation no. Wellesbourne Primary SchoolProjectPlant no. Main Hall/

Unit no. 20

Date 07/11/2018

Page 12/28

Unit no.: 20Geniox 14DR - RoofWeight: 1531 kgUnit width: 1482 mm

Air/fan data Supply air Extract air Units

Airflow (1.205 kg/m³) 1.40 1.40 m³/s

Face velocity (unit) 1.60 1.60 m/s

External pressure 250 250 Pa

Fan speed 1597 1584 RPM

Motor; Voltage; Rated current 2.00; 3x400; 3.30 2.00; 3x400; 3.30 kW/V/A

Sound break out 56 dB(A)

Power supply 3x400V + N + PE 50 Hz

Consumed current 33.2 A

Filter Supply / Extract F7 - ePM1 60% / M5 - ePM10 60%

Heat pump Winter / Summer 1.8 (8) kW ; COP 4 / 7.2 (26) kW ; EER 3.6

Energy Dimensioning AverageFans [kWh/year 8760hours]

Heat Recovery (Wet / Dry) 83.0 % / 83.0 % 83.0 % / 83.0 %

SFPv, clean filters including speedcontrol

1.64 kW/(m³/s) 1.64 kW/(m³/s) 20117 kWh

Systemair LtdUnit 28 Gravelly Ind ParkBirminghamB24 8HZ

Telephone :0121 322 [email protected]

Systemair A/S - Air handling unit design SystemairCAD 2.0 Geniox-1/C2018-10.05.C3 | 07/11/2018

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Unit no. 20

Date 07/11/2018

Page 14/28

Commissioning Data Supply Extract UnitPressure drop clean filters 47 30 PaFans absorbed power clean filters - - kW

Alternative working pointsDim./Max Average

Airflow, Supply, m³/s 1.40 1.40Airflow, Extract, m³/s 1.40 1.40External pressure drop, Supply 250External pressure, Extract 250SFPv, kW/(m³/s) 1.64 1.64SFPe, kW/(m³/s) 1.80 1.80Efficiency, Heat exchanger (wet), % 83.0 83.0Efficiency, Heat exchanger (dry), % 83.0 83.0Heat pump, Absorbed power, Winter, kW 1.8 1.8Heat pump, Absorbed power, Summer, kW 7.2 7.2Sound data dB(A)

Supply air 78Outdoor air 64Exhaust air 79Extract air 69

Sound break out 56Operation hours 8760

Operational hours yearly 8760





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Date 07/11/2018

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Technical specification

Unit

Frequency band [Hz] 63 125 250 500 1K 2K 4K 8K TotalSound power level [dB] [dB] [dB] [dB] [dB] [dB] [dB] [dB] [dB(A)]Supply air 72 76 77 75 74 70 67 63 78Outdoor air 67 68 69 63 54 49 43 36 64Exhaust air 72 76 77 75 75 70 67 63 79Extract air 67 68 69 65 64 59 56 51 69Sound break out 65 65 55 51 52 46 41 27 56

CasingPanels Steel sheets coated with aluzinc AZ185Frame profiles Steel profiles coated with zinc z275 and powder coatedMullion profiles Steel profiles coated with aluzinc AZ185Corners ABSInsulation 60 mm mineral wool / Density 60 kg/m3Corrosion protection Class C4 according to EN ISO 12944-2:2000Operating pressure 0 - 2000 Pa (Geniox10 - Geniox31)

0 - 1500 Pa (Geniox36 - Geniox44)Operating temperatures -40/+40 °C (Standard)

-40/+60 °C (Special design)Classifications EN 1886, 2. edition 2008Mechanical Strength Class D1(M)Casing air leakage -400 Pa: Class L2(M)

+700 Pa: Class L2(M)Filter by-pass leakage -400 Pa: Class G1-F9

+400 Pa: Class G1-F9Thermal transmittance Class T2(M)Thermal bridging factor Class TB2(M)

Acoustic insulation of casing Octave band Hz Insulation dB63 10

125 17250 24500 27

1000 282000 284000 328000 40

Roof Trapezoidal roof plates - steelRoof dimensions (width x height x length) 1782 x 150 x 4182 mmRoof is built of trapezoidal steel plates coated with alu-zinc. The Slope of the roof is about 3° and there is an overhang of 100 – 200 mm along all 4 sides. The trapezoidal plates, profiles, screws and sealant are delivered as an assembly kit along with assembly instructions.





Unit no. 20

Date 07/11/2018

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Control systemLanguage in controller menu English

NaviPad navigation tablet delivered YesExternal communication BACnet, IPTemperature control Supply air temperature controlFan control Air flow control m³/hDamper motor supply air Motor spring returnDamper motor extract air Motor spring returnFor selection of sensors - study flow chart in control system printout

Mains power supply for control systemSwitch board data Supply cable L1 + L2 + L3 + N + PE

Voltage 3x400 VACHz 50 HzFuse for supply air fan (in main cabinet) 10 AFuse for extract air fan (in main cabint) 10 AFuse for DVU-HP (in cabinet for DVU-HP) 32 ARated fuse PSCC max (in main cabinet) 10 kAMax. consumed current 33.2 AMax. consumed current in neutral wire 5.0 AMinimum fuses for unit (L1-L2-L3) 40 AMinimum fuses for unit (L1-L2-L3-N) 40 A

The installer must ensure that protection of the mains power supply relating to frequency converters is according to local statutory requirements. By one or more 400 VAC motors, HPFI type B must be installed.

The electrical installation (wiring, mounting of components, connection plugs, etc.) for the unit is done as an machine installation according to 60204-1

The supply unit consist of

Empty sectionPressure drop 2 PaLength 300 mm

Damper Pressure drop 2 PaDamper blades Standard





Unit no. 20

Date 07/11/2018

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Filter Dimensioning pressure drop 106 PaInitial pressure drop/Final pressure drop 47/165 PaVelocity, face area 1.87 m/sVelocity, filter area 1.87 m/sFilter class F7 - ePM1 60%Filter length 520 mmFilter description Camfil Hi-Flo II XLT

Inspection sectionPressure drop 2 PaLength 100 mm

Rotary heat exchanger Supply Extract

Air flow 1.40 1.40 m³/sPressure drop 151 151 PaWINTERAir temperature before/after -5.0/17.4 22.0/-0.4 °CAir relative humidity before/after 90/40 40/99 %Capacity 49.60 kWTemperature efficiency 83.0 %Dry efficiency according to EN 308 at 1.40 m³/s 83.0 %Humidity efficiency 61.3 %SUMMERAir temperature before/after 28.0/23.0 22.0/27.0 °CAir relative humidity before/after 60/81 40/30 %Capacity 8.70 kWTemperature efficiency 83.0 %Humidity efficiency -0.2 %Heat exchanger type ST - Condensation (Temperature)Efficiency (Wave height) X - HighWheel Diameter Ø1280Description ST1-XL-WV-1280Rotor drive Variable speedElectrical data 1x230V, 40W, 0.7Amp

Purging sector 1 pcs





Unit no. 20

Date 07/11/2018

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Heat pumpSupply Extract

Air flow 1.40 1.40 m³/sPressure drop 51 71 PaFace velocity for the coil 2.1 2.1 m/s

WINTERAir temperature before/after * 17.4/22.0 -0.4/-2.8 °CAir relative humidity before/after 39.6/29.8 99.0/99.0 %Capacity * 7.9 6.5 kWRefrigerant temperature 26.4 -6.2 °CCondensate 0.1 l/minUsed capacity at working conditions 27.1 %Absorbed power, at operating point 1.8 kWCOP, compressor system * 4.5COP total, compressor system + rotary heat exchanger * 32.0* Energy for the defrosting is not considered in the winter calculation. The heat pumps cannot run continuously with refrigerant temperatures below -2°C without defrosting. The defrosting will cause temperature drop in the supply air for a short period.

SUMMERAir temperature before/after 23.0/16.0 27.0/46.3 °CAir relative humidity before/after 81.2/98.0 29.5/10.3 %Capacity 25.7 33.0 kWRefrigerant temperature 10.7 50.5 °CSensible cooling in % of total cooling 46 %Condensate 0.3 l/minUsed capacity at working conditions 74.6 %Absorbed power, at operating point 7.2 kWEER, compressor system 3.6EER total, compressor system + rotary heat exchanger 4.7

Tube material Cu CuFin material Al AlFin spacing 2.5 2.5 mmCode for supply air coil TDZ-14-CD-Z-5-9-575-1158-2.5-Cu-Al-H-7/8Code for extract air coil TCZ-14-CD-Z-6-6-575-1158-2.5-Cu-Al-V-7/8Drip tray material Stainless steel Stainless steelRefrigerant / Amount R410A 8.3 kgCompressor ZPD61+ZP61External connectionsCurrent (is included in the main cabinet) 3*400V+N+PE, 50Hz 23.6 AStart signal (Heating) / Cooling demand Potential free contact setControl signal 0 - 10 V,DCPotential-free alarm signal 1 pcs





Unit no. 20

Date 07/11/2018

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Fan , PlugAir flow 1.40 m³/sExternal pressure 250 PaPressure drop 16 PaStatic pressure (Designed at wet conditions) 581 PaTotal pressure 614 PaFan speed 1597 RPMMaximum fan speed 1880 RPMTotal efficiency by static pressure, incl. motor and speed control 64.0 %Total efficiency by total pressure, incl. motor and speed control 67.5 %K-factor (p=1.2 kg/m³) 197Fan type - Large GR45C-ZIK.DG.CRErP efficiency n(stat,A) 69.0 %ErP efficiency class N(actual)/ N(target) 76.3 / 62ErP-conformity YesDirect drive

MotorMotor type EC motorMotor types-size ZIK.DG.CRMotor protection Built-inRated power 2.00 kWSpeed (nominal) 1880 RPMCurrent, Amp. 3.30 AVoltage 3x400 VConsumed power from mains power supply, including speed control 1.27 kW

Safety screen 1 pcs

Empty sectionPressure drop 2 PaLength 300 mm

The extract unit consist of

Damper Pressure drop 2 PaDamper blades Standard





Unit no. 20

Date 07/11/2018

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Filter Dimensioning pressure drop 76 PaInitial pressure drop/Final pressure drop 30/122 PaVelocity, face area 1.87 m/sVelocity, filter area 1.87 m/sFilter class M5 - ePM10 60%Filter length 520 mmFilter description Camfil Hi-Flo II XLT

Heat pumpData are stated on supply.

Rotary heat exchanger Data are stated on supply.

Fan , PlugAir flow 1.40 m³/sExternal pressure 250 PaPressure drop 16 PaStatic pressure (Designed at wet conditions) 567 PaTotal pressure 600 PaFan speed 1584 RPMMaximum fan speed 1880 RPMTotal efficiency by static pressure, incl. motor and speed control 63.9 %Total efficiency by total pressure, incl. motor and speed control 67.6 %K-factor (p=1.2 kg/m³) 197Fan type - Large GR45C-ZIK.DG.CRErP efficiency n(stat,A) 69.0 %ErP efficiency class N(actual)/ N(target) 76.3 / 62ErP-conformity YesDirect drive

MotorMotor type EC motorMotor types-size ZIK.DG.CRMotor protection Built-inRated power 2.00 kWSpeed (nominal) 1880 RPMCurrent, Amp. 3.30 AVoltage 3x400 VConsumed power from mains power supply, including speed control 1.24 kW

Safety screen 1 pcs





Unit no. 20

Date 07/11/2018

Page 21/28

Outlet on the back side of unitPressure drop 0 Pa

Other parts

Feet or baseframeFeet or baseframe BaseframeBaseframe height 218 mmCorrosion protection Galvanized Z275

Inlet louvreProduct Dimensions (width x height)Outdoor 1400x600 mmSupply 1400x600 mmExtract 1400x600 mmExhaust 900x700 mm

Section about shipping

Product Dimensions (width x height x length), Weight, Inc. Packaging Weight of unitincl. packaging

AHU1-4182 1582 x 1820 x 4182 mm 1469 kg 1466 kgThe unit sections are delivered mounted on base frame.

GXroof-14-4990-1 2200 x 300 x 1200 mm 83 kg 65 kgThe trapezoidal plates, profiles, screws and sealant are delivered as an assembly kit along with assembly instructions.





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Date 07/11/2018

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Weights

Section No Section Code Weight of function Weight of sectionFunction Code kg kg

1 Casing Length 1241 mm 300Casing 214Empty section 0.1Damper 17Filter 14Inspection section 0.1Fan 54Outlet on the back side of unit 0.1

2 Casing Length 1400 mm 726Rotary heat exchanger 126Integrated cooling 600

3 Casing Length 1141 mm 290Casing 197Fan 54Empty section 0.1Control system 8Damper 17Filter 14

4 Baseframe Length 3782 mm 130Other components 85Weight of unit 1531





Unit no. 20

Date 07/11/2018

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Integrated Systemair Access control system

The air handling unit is built with a complete and fully integrated control system - based on the Access control unit mounted in the control cabinet and the NaviPad control panel with a graphical user interface. The air handling unit can either run stand alone or handled from a building management system.Before shipment the unit has been assembled and has passed a final functional test and inspection. Order-specific parameters are stored in the control unit during this process. The test report is delivered with the air handling unit.

Flow chart

VVX

P

BP2:AGQ2

EF

T

BT2 TA2

M

P

BP1:B

M

QM32S

T

BT3

M

QM31S

T

BT1

P

BP2:B

M

DVU HP

T

BT4

P

BP1:A GQ1

SF

T

BT5Components in red are not delivered

Exhaust

Outdoor

Extract

Supply

Detailed technical specificationSymbol Cable Page/ Terminals HW I/O

External components Name number ColumnSupply air tempemperature BT5 W355 13 : 3 T11 AI1Normal speed Ext. Sig. W581 10 : 2 T31 DI2Reduced speed W580 10 : 1 T32 DI1Unit stop W583 10 : 4 T30 DI3

Internal componentsRotor drive TA2 W232 36 : 7 F3: L1-N

W642 36 : 8 Link 2 BUS Adr. 7Temperature efficiency BT4 W343 30 : 1 BP1 DPT BP1: In2Damper motor on/off spring return, supply QM31S W631 34 : 1 Link 1 BUS Adr. 21Pressure over filter, supply BP2:B W662 DPT BP2: BOutdoor air temperature BT1 W341 31 : 1 BP2 DPT BP2: In1





Unit no. 20

Date 07/11/2018

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Pressure transmitter - supply fan BP1:A W661 30 : 1 Link 1 BUS Adr. 5EC fan, supply 1 GQ1 W601 32 : 0 Link 1 BUS Adr. 1

W101 25 : 2 F1: L1-L2-L3DVU-HP DVU HP W529

W528 10 : 5 T29 (X5:25-26) DI414 : 3 T62 (X5:18-19) DO210 : 7 T28 (C9-NO9) DI515 : 4 T66 (X5:17-18) DO616 : 4 T72 AO2

Damper motor on/off spring return, extract QM32S W632 35 : 1 Link 2 BUS Adr. 22Pressure over filter, extract BP1:B W661 DPT BP1: BExtract temperature BT3 W444 30 : 1 BP1 DPT BP1: In1Exhaust/De-ice temperature BT2 W442 31 : 2 BP2 DPT BP2: In2Pressure transmitter - extract fan BP2:A W662 31 : 1 Link 2 BUS Adr. 6EC fan, extract 1 GQ2 W602 33 : 0 Link 2 BUS Adr. 2

W102 26 : 2 F2: L1-L2-L3

Control cabinet and mains supply

The control cabinet is placed as indicated in order confirmation material. The control cabinet holds necessary components including terminal blocks, fuses, 24VDC power supply and the Access control unit. The controller is configured according to the customer’s order and confirmed in the order confirmation. Specification is also delivered with the unit. On site mains power supply must be connected to the cabinet. The installer on site has full responsibility to ensure that any unit/installation which requires additional protection of the mains power supply relating to frequency converters or any other such device is all carried out according to local statutory requirements.The supply disconnecting device for the unit is not included.

External electrical components

Temperature sensor for the supply air is delivered with 10 metres of cable, and must be connected to the terminals in the control cabinet by the installer on site.The Access control unit is prepared for connection of delivered components and extra sensors that could be needed.Control panel with 3 m cable is not connected to controller.Depending on the customer’s choice, external components are delivered, such as:• pressure transmitters in ducts for pressure control• valve for heating with heating coil• temperature sensor for frost protection of the hot water heating coil• electrical heating coil• valve for cooling with chilled water.NaviPad control panel with 3 m cable is not connected to the Access control unit from the factory.





Unit no. 20

Date 07/11/2018

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Access control unit and NaviPad control panel.

The Navipad control panel with 7” capacitive touch panel and 3 m cable must be connected to the Access CU40-C control unit in the control cabinet. All normal handling and configuration is carried out from the graphical user interface on the NaviPad control panel. The protection class of the NaviPad control panel is IP 54 and 0-50 C° permitted temperature. The NaviPad enclosure is not UV resistant and the NaviPad is not for outdoor mounting. Communication between the panel and the controller in the cabinet is possible with up to 100 meters of cable. The installer must use Standard PDS LAN network cable AWG23 (path cable) for extension.If several units are connected to a local network (on the same subnet), the NaviPad will be able to connect and monitor up to nine units. Please see separate instruction for detailsIf more units are connected to a local network (same subnet), the panel will be able to connect and handle up to nine units. Please see separate instruction for details

Schedules

The controller has individual schedules for start, stop and normal/reduced/high airflow rate for each weekday as well as schedules for holidays.The controller has automatic summer-winter-time change over.Outside normal operating hours, free cooling is available according to settings.

Cooling recovery

If the extract air temperature is lower than the outdoor air temperature, and there is a cooling demand in the rooms, the cooling recovery will be activated. The heat exchanger signal is reversed to give increasing cooling recovery on increasing demand.

Access rights - passwords

There are 3 different user levels• End-user - (no password) - access to read values on the start page, see the flow diagram, possibility

to start/stop the unit, adjust the temperature setpoint and activate extended running.• Operator level (password) - access to read values, change user relevant settings concerning

schedules, temperature, air flow and also to acknowledge alarms and to restart the system after having removed the reason that triggered the alarm.

• Service (special password) - access to make changes in configuration menus, access to store new settings, access to restart the unit according to user’s own settings or original factory settings.

Alarms and safety functions

If an alarm condition occurs, a circular light appear at the bottom of the control panel.• Fixed green — Status ok (no active alarms).• Flashing red — Active/returned alarms in one or more controllers.• Fixed red — Acknowledged/blocked alarms in one or more controllers, alarms not reset





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Date 07/11/2018

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Alarms are logged in an alarm list. The list shows the type of alarm, date and time for the alarm and alarm class:• Class A alarm• Needs to be acknowledged• Class B alarm• Needs to be acknowledged• Class C alarm• Returns when the cause of the alarm disappear

Flexible System

A qualified service technician - on the site and at the request of the user - will be able to adapt the regulation further to the requirements of the users;• The air flow regulation can be changed between several methods that are constant air volume through

the fans, constant pressure in the ducts, CO2 dependant control or humidity dependant control. Temperature controlled airflow, which either decrease or increase airflow to achieve heating or cooling demand.

• The temperature control mode can be changed between room temperature control, supply air temperature control, extract temperature control and outdoor compensation of the selected temperature. Summer/winter dependent switching between extract air/room temperature control and supply air temperature control.

• In addition to the fixed schedule, an external start signal for extended operation is available, 3 levels• In addition or as an alternative to the fixed schedule, an external stop input signal is available.• A large number of other alternative functions are also optional.

Recovery with rotary heat exchanger

The capacity of the rotary heat exchanger is steplessly controlled via the modulated control of rotor speed.

Extended running - normal, reduced speed, high speed and stop

Extended running can be activated in 3 ways:• Digital input for normal, reduced, high, stop.• From the start page of the NaviPad at normal speed.• Signal from BMS system for normal, reduced, high, stop.





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Date 07/11/2018

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Communication to BMS systems via BACnet, IP

The controller has been prepared for BACnet via TCP/IP (LAN).This can be used for communication with a BMS system (Building Management System).

Supply air temperature control

• The control of the supply air temperature is based on the value from the sensor mounted in the supply air duct.

The supply air temperature is controlled by a PID-controller (PID control loop). The set-point for the supply temperature can be adjusted from the control panel.

Air flow control - m3/h, l/s, m3/s, CFM

The air flow rates of supply and extract air are controlled separately. The supply and extract air at low, normal, high airflow are set separately on the control panel.On each fan a pressure transmitter measures the difference between the pressure before the fan and the pressure at the measuring probe in the inlet cone. Through a formula with a factor for each fan size, the output signal from the pressure transmitter is used to calculate the actual airflow.A PID-controller maintains the set point value by controlling the speed of the fans.

Supply fan with EC motor

The supply air fan is driven by an EC motor with the impeller mounted directly on the motort. All parameters in the motor speed control have been configured and tested from factory.

Extract fan with EC motor

The extract air fan is driven by an EC motor with the impeller mounted directly on the motor. All parameters in the motor speed control have been configured and tested from factory.

GXU-HP compressor system with cooling recovery, cooling and heating function

The complete compressor system is in a separate section with rotary heat exchanger, coils and the system for the control of safety functions as well as the capacity. The system is able to provide cooling or heating of the supply air.The main controller in the cabinet for the air handling unit delivers a start/stop signal and 0-10V DC signal for control of the capacity between 5 % and 100 %. The separate controller in this section converts the signal to the capacity required.To promote maximum reliability, the system has an automatic capacity reduction system for reduction of the risk of cut off due to overheating. The system is provided with refrigerant and tested for easy start up on the site.The power supply for the compressor system is delivered from the main cabinet for the air handling unit.The main controller in the cabinet for the air handling unit is able to control the cooling recovery by the rotary heat exchanger with the advantage that the outdoor air is precooled by the rotary heat exchanger,





Unit no. 20

Date 07/11/2018

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when the extract air temperature is lower than the outdoor air temperature. Due to the reduced outdoor air temperature before the cooling coil, the electricity consumption of the compressor system is reduced. The condenser is in the extract airflow after the rotary heat exchanger.

Damper motors

Supplied and installed as in flow chart specification. Spring return models (S) will have running time of about 150/16 seconds. Non spring about 150 seconds. Modulated models indicated by round symbol.

Filter guards

Filter guards over bag filters are modulated. Pressure limit is depending on the flow. Low flow = low pressure limit, high flow = high limit. Transmitters are connected to the controller. From the display you can see actual pressure and set limits for alarm. Transmitters placed as indicated in flow chart.Panel filter will have a pressure switch to give signal to the controller when set limit is exceeded.

Cabinet integrated in or on Geniox 10-18

The cabinet is integrated in or on the air handling unit according to the technical documentation.Indoor units with external cabinet will have external cabling connected to the cabinet with plug connectors. Cables are to be covered by ready to mount ducting, delivered with the unit.Units with horizontal section split, size GX10-16 will have ducting partly at the backside of the unit. Size GX18, cables are to be run in a covered cable tray at the front of the unit.All units with integrated cabinet, will have internal cabling. At vertical section split, assembled by pre-mounted connectors.




Noise Assessment



Appendix F – Comments Response to EHO – 07th March

2019

A112162 March 2019

A112162 07th March 2019

Response to comments received from Ben Ellis, Environmental Health Officer Stratford-on-

Avon District Council, received on 27th February 2019.

WYG Responses in Blue

SoADC Comments

1. Gardens: In relation to distances to receptors- BS4142 clearly indicates that garden areas can be used

for assessment. I think this is reasonable as noise is likely to be daytime only and residents should have

their garden areas protected from significant noise. The assessment locations should therefore include the

closest point of the garden areas of the effected properties for daytime (no’s 68 and 70). The rating at this

point should have suitable penalties applied if they are perceptible.

2. Barriers: The model also assumes a solid barrier at the end of the gardens of the neighbouring properties.

The effectiveness of a barrier depends a on its size, density and construction. One of the neighbouring

gardens does not have a fence at all -just a hedge. In any case to consider that garden fences should be

modelled as solid, especially as they are outside the control of the application, is not appropriate. Therefore

the fence should be excluded from the model if it is relied upon to make the noise an acceptable level

(bearing in mind the assessment location in the gardens above). The AHU plant room louvres are also 3m

high whereas the fence is 1.8m. If barriers are necessary they should form part of this application and

suitably specified in the report. They should be designed to be higher than the noise source by at least

0.5m- this may involve lowering the height of the louvres. Full calculations should be provided.

3. Noise source: It is not clear whether the 56dB quoted from the Geniox 14DR AHU is a sound power and

this is not clear in the manufacturers documentation. Actual sound pressure levels incident on the louvers

from the plant room will consist of both direct and reverberant sound. Calculations for the sound pressure

level incident on the louvres should be provided. Details of and construction of the acoustic louvres of the

plant room (including manufacturers stated insertion loss) and then the resultant external sound pressure

level should also be provided.

WYG Response

With respect to the comments above, an additional assessment which considers worst-case garden

receptors has been undertaken at the closest point at house numbers 68 and 70 on Mountford Close (shown

on SK01). The assessment has been carried out with no barriers to garden areas. Table 1.0 below presents

the calculated internal reverberant noise level of the AHU room based on worst-case assumptions, using

A-weighted sound power data from the exhaust air (79 dB) of the Geniox 14DR.

A112162 March 2019

Table 1.0 Calculated Reverberant Noise Level

BSP Unit 63 125 250 500 1K 2K 4K 8K

Length 5.8 5.8 5.8 5.8 5.8 5.8 5.8 5.8

Width 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3

Height 3 3 3 3 3 3 3 3

RT 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

r distance from source to nearest internal facade

1 1 1 1 1 1 1 1

Q Directivity 4 4 4 4 4 4 4 4

Lw 45.8 59.9 68.4 71.8 75.0 71.2 68.0 61.9

Volume of Space 40.0 40.0 40.0 40.0 40.0 40.0 40.0 40.0

Surface Areas 75.3 75.3 75.3 75.3 75.3 75.3 75.3 75.3

A Total Absorption

4.3 4.3 4.3 4.3 4.3 4.3 4.3 4.3

Alpha bar 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7

Rc Room Constant

175.7 175.7 175.7 175.7 175.7 175.7 175.7 175.7

SPL 41 55 64 67 70 67 63 57

Calculated Reverberant SPL Based on Number

of Sources

41.0 55.0 64.0 67.0 70.0 67.0 63.0 57.0

Sound Pressure Level 74.0

Details of the acoustic louvre doors (Metador Defender Soundguard) for the AHU plant room are appended

to this document. It has been confirmed that the 300mm deep Sound Block Louvre System single figure

sound reduction of Rw 18 dB is to be used. As shown within the manufacturers specification attached,

spectrum data is not available. However, with this attenuation, the output from the AHU with the above

reverberant calculations is 56 dB (A), the same as the breakout sound power level detailed within the

manufacturer’s data for the Geniox 14DR.

The assessment of noise levels within the closest point of gardens 68 and 70 on Mountford Close is shown

in the table below. The BS4142:2014 assessment is inclusive of a +2 dB correction in accordance with the

previous assessment.

Table 2.0 Noise Assessment for Proposed BSP in Gardens

Ref

Measured Average Pre-installation Background LA90

Specific noise level from plant LAeq

Noise Rating Level from Plant LAeq

BS 4142 Score

Daytime Daytime Daytime Daytime

G01 42 43 45 3

G02 42 42 44 2

A112162 March 2019

A background noise level has been taken from the LA90 measured during the weekday daytime period at

LT1, which lies on the boundary of gardens 68 and 70 (as shown in SK01 of the Noise Technical Report)

and is therefore considered to be the most representative existing background noise level of this location.

Figure 1.0 below shows statistical analysis of the weekday daytime period at LT1. For this distribution of

data, in accordance with the guidance presented within BS4142:2014, the modal LA90 of 42 dB has been

used within the above assessment.

Figure 1.0 Statistical Analysis of LT1 Weekday Daytime Period

The results in Table 2.0 show that worst-case noise levels from the proposed plant are predicted to be no

more than 3 dB above background noise levels within the corner of the closest gardens, under worst-case

assumptions, in the absence of any screening. This change still falls within the Lowest Observed Adverse

Effect Level and is an indication that an adverse impact is unlikely.

Emma Aspinall Nigel Mann

Environmental Consultant Director

0%

2%

4%

6%

8%

10%

12%

14%

16%

282930313233343536373839404142434445464748495051525354555758596061626364656670

LA90(5min)dB

A112162 March 2019

Appendices

Sketches

SK01 Garden Receptor Locations and Worst-case LAeq Noise Contour Plot

G01

G02

428160

428160

428180

428180

428200

428200

428220

428220

428240

428240

428260

428260

428280

428280

428300

428300

428320

428320

428340

428340

428360

428360

428380

428380

428400

428400

428420

428420

428440

428440

428460

428460

428480

428480

428500

428500

428520

428520

428540

428540

428560

428560

428580

4285802

55

42

0

25

54

20

25

54

40

25

54

40

25

54

60

25

54

60

25

54

80

25

54

80

25

55

00

25

55

00

25

55

20

25

55

20

25

55

40

25

55

40

25

55

60

25

55

60

25

55

80

25

55

80

25

56

00

25

56

00

25

56

20

25

56

20

25

56

40

25

56

40

25

56

60

25

56

60

25

56

80

25

56

80

25

57

00

25

57

00

25

57

20

25

57

20

25

57

40

25

57

40

Client:


Project:


Project Number:

A112162


Garden Receptor Locationsand Worst-case LAeq NoiseContour Plot

Drawing Number:

SK01

Key:

Site Boundary:

0.0 - 40.0 dB 40.0 - 50.0 dB 50.0 - 60.0 dB > 60.0 dB






© WYG Environment

A112162 March 2019

Acoustic Louvre Details

Defender SoundguardDesigned to reduce sound transmittance and keep your premises totally secure, Soundguard can be fully customised to meet your acoustic requirements.

ACOUSTIC

DDA Compliant

Britannia House, John Boyle Road, Middlesbrough, TS6 6TY

T 01642 337119F 0845 3710404

Visit our website www.metador.com

Follow us on Twitter @madebymetador

Structural opening sizes (mm)**

Max width Max height

Single leaf 1480 3050

Double leaf 2800 3050

The Defender Soundguard is designed to reduce sound transmittance for many external and internal applications. It is available in almost any size and is manufactured to suit the customer requirements. It has been designed to block sound up to Rw52dB.

Over panels / Side panelsAvailable to suit customer requirements.

Door Leaf

Manufactured from two 1.5mm Galvanised steel skins, folded and mechanically fixed to form a strong and rigid 45mm thick door leaf, filled with a variety of acoustic cores. Anti-jemmy flanges to the leading edge of the leaf provide excellent jemmy resistance.

Frame

90mm frames are pressed from 2mm Galvanised* steel to form a single rebated profile. Profiled headers form a smooth butt joint with the vertical posts and are joined together utilising strong M8 bolts to provide positive rigidity. The special fast fit frame is able to compensate for most irregularities in the opening with 8no threaded fixing adjusters per doorset. They permit a tolerance of up to 18mm on each side of the door. Shims and packers are not necessary making an extremely secure fix. Frames can be insulated if required.

Thresholds

DDA compliant 2mm stainless steel threshold bolted into the vertical frame posts. Available in outward opening, inward opening and ramped. An auto drop-seal is added for sound reduction for certain sound levels.

Seal

A variety of different acoustic perimeter seal systems available to meet your sound reduction requirements.

Hardware

Door leaves are hung from 4no stainless steel hinges for smooth operation and optimum weather resistance. Security dog bolts secure the leaf into the frame if the hinges are attacked. Additional hardware includes a range of locks, latches, lever handles, panic hardware, closers and stays. On double doors, lever-action flush bolts can be installed within the leading edge of the inactive door leaf.

Finish

Available in any RAL or BS standard or marine-grade powder-coat finishes.

Vision Panels

A full range of vision panels with acoustic glass with varying sound reduction levels.

Acoustic Door Louvres

Sound Block Louvre System

An acoustic louvre is somewhat of a contradiction in terms; a louvre is designed to allow the passage of air through a door, but at the same time it will permit the passage of sound. The SBLS is designed to reduce the amount of sound passing through the door whilst still allowing air to flow. In acoustic tests, our 300mm deep SBLS louvre has achieved a sound reduction of Rw18dB, and the 600mm deep SBLS louvre Rw32dB. Louvre panels to any sizes are available. Both solid, louvred and glazed over panels and side panels can be manufactured to suit individual customer requirements.*

Acoustic

* Magnelis steel is offered as an alternative. Please enquire.

** For oversized doors, please enquire.

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