UNDERFLOOR HEATING SYSTEMS - Multipipe · Page 4 Technical Installation Guide Multipipe Ltd Tel:...

Technical Installation Guide

April 2017

UNDERFLOOR HEATING SYSTEMS


Multipipe Ltd Tel: 01245 227 630 Unit 12, Great Hayes Bus. Park, Lower Burnham Road, Stow Maries, Essex CM3 6SQ

CONTENTS

Section 1 - Introduction

Page 3 Pre-Installation Checks

Page 4 Tools & Site Requirements

Section 2 - Manifolds

Page 5-9 FMP Premium Manifolds

Page 10-11 FMC Contract Manifolds

Page 12-15 Water Temperature Pump Control Pack

Section 3 - Fixing Systems

Page 16 Screed-Rail UFH® System

Page 17 Screed-Clip UFH® System

Page 18 Float UFH® System Page 19 Joist-Plate UFH® System

Section 4 - Installation

Page 20 Pressurising, Testing UFH System & Start-up information

Page 21 UFH Installation Overview

Section 5 - Controls

Page 22 Base UFH Controls 230v

Page 23 Wireless UFH Controls

Page 24 Premium UFH Controls 230v

Page 25 24v UFH Controls

Page 26 Smart UFH Controls 230v

Section 6 - FAQ / Warranty

Page 27-28 FAQ / Troubleshoot

Page 29 Guarantee & Warranty



Upon delivery of your underfloor heating system, please check all products against your delivery note. Please contact us on 01245 227 630

within 24 hours of receipt if there are any problems with your delivery.

If you have requested a line drawing with your order. Please check this thoroughly before commencing the installation to ensure it meets

with your requirements, especially make sure of the following:

1). That the manifold is indicated in the correct position.

2). That all the areas to be heated are indicated correctly.

3). That all unheated areas are indicated such Kitchen units & fixed furniture.

4). That the floor constructions are correct.

Pipework Layout

Manifold Location

Coil & Cut Schedule

Floor Construction/ UFH System

Manifold Sizing Chart

Project Reference

Checking Your Order

Line Drawings (If applicable to your order)

Product Description

Product Quantity Remaining

Delivery Terms & Conditions

Product Code

Product Quantity



Before installation of your underfloor heating system please ensure you have the following tools: (depending on your type of installation addition-

al tools may be required)

• Measuring tape

• Masonry drill & bits

• Adjustable spanners/wrench

• Pipe cutter & bevelling tool

• Circlip hose pipe fasteners

• Hose pipe

• Pressure tester

• Screw drivers

• Stanley knife

• Spirit level

• Tacker gun & staples (maybe req’d for your fixing system)

• Fine toothed hand saw

• Duck tape

• Marking paint

Before installation of your underfloor heating system please ensure the following site requirements are met:

• The working area must be weather tight.

• The working area must be clean and swept of any debris or rubbish

• Access to mains pressure water for filling and testing

• Task lighting & power

• Any site specific safety & access equipment/scaffolding PPE etc.

The following items are available to buy from Multipipe Ltd, please contact our offices for prices.

Pipe Staple Tacker Gun

Pipe Decoiler

(Recommended for use with 500m pipe coils)

Pipe Bevelling tool

Pipe Cutter

Tooling (required for installation)

Site Requirements

Tooling (available to Purchase from Multipipe)

Page



Multipipe FMP manifolds are pre-assembled, supplied complete with flow metres, fill and drain points, automatic air vents and blanking plugs.

Manifold finish is nickel-plated brass. Flow rail has a double regulating red sleeve 0-4 l/min flow meter per circuit. Return rail has a blue capped

integrated electrothermic body (ready for actuator head) per circuit. The flow metres include an isolate function and are located on the top of the

manifold. Flow metres provide a visual indication of flow rate through each circuit. Pipe is connected to manifold using 24x19mm threaded

pipe connectors.

210m

m

L (mm) 56mm

Manifold Ports 2 3 4 5 6 7 8 9 10 11 12

L (mm) 172 222 272 322 372 422 472 522 572 622 672

D

C

A

B

50

Port Connection centre(s)

69.5

13.5 14.5

23.5Ø

53.5

65

Fill & drain point

Combined Flow Regulator

and flow meter Automatic Air Vent

Return Valve

354m

m

Isolating Ball Valve

15-14049

Dimension (mm) 1”

A 26.5

B 51

C 56.5

D 81

24x19mm Thread

Premium FMP Manifolds (#15-061..)

15-14049 - 1” Ball Valves

(Not supplied with manifold)

24x19mm Thread



Combined Flow

regulator and

flow meter

2

2

1

Red Collar

19mm black spanner flats

Flowmeter tube

Range of measurement 0-4 l/min

Maximum operating pressure 6 bars

Max. operating temperature 90 °C

Kv = 0.15 (1 l/min) -0.55 (4 l/

min)

Kv max off scale = 0.9

Precision ±10% fs

fs= Bottom of scale

Cleaning the flow meter

Turn the red collar (1) clockwise, until the isolating

function is fully closed. Remove the flowmeter tube by

securing the black spanner flats, then using either hand

pressure or a 17mm ring spanner, gently unscrew the

flowmeter tube anticlockwise. Clean the tube and screw

it back on. Turn the red collar (1) anticlockwise until the

isolating valve is fully open again.

How to balance the circuits using flow meter

Flowmeters have a double regulating function i.e. they not only adjust water flow but also include an isolating function which can be opened and

closed without affecting the flow setting. The flowmeter has an inner combined flow regulator and flowmeter, see Fig. 1, and an outer red collar.

The red collar, (1). is used for isolating the valve. The inner regulator is used to set the flow in the circuit, increasing or decreasing the flow by using

the 19 mm spanner flats provided, see Fig. 2. The change in flow can be read in the scale on the flowmeter tube. The valve is supplied in the fully

closed position. First open the isolating valve following the instructions below:

3 1

1

Fig. 1 Fig. 2 Fig. 3

Step 1

Lift the red collar and turn anticlockwise approximately three and a half

turns. You will see the whole of the flow meter rotating and rising. If the

valve is over-rotated more than three and a half turns - then the internal

plastic threads can become damaged and cause leaks. If you reach the

positive stop please rotate back half a turn. You are now ready to use the

flow regulating function.

Step 2

Lower the red collar (1) until it touches the manifold.

Then using a 19mm spanner, or your fingers, adjust the

flow using the black spanner flats at the bottom of the

Flow meter (2). You can read the required flow in litres per

minute directly from the red indicator against the scale in the clear flow

meter tube.

Step 3

When you have set the required flow rate, raise the red collar (1) again,

until it is engaged against the black spanner flats at the bottom of the

flow meter (2), see Fig. 3.

Flowmeter pressure drop vs flow rate

no. of turns for opening the flow regulator

TA = Fully open.

The above values refer to water temperature at 15 °C

FMP Premium Manifold - Flowmeter Adjustment



Premium FMP Manifolds (#15-061..)

Accessories / Spares for Use with FMP Manifolds

15-16161

16x2mm mlcp pipe

repair coupling

(other sizes available)

15-53114

FMP Thermostatic

Replacement Kit

15-03161

16x2mm mlcp

Pipe Connector


15-53122

Blanking Cap

(24x19mm thread)

15-53117

FMP Topway

Lockshield with

Flow Meter

15-53118

FMP Flow

Metre Seat

15-53115

FMP Single Circuit

manifold extension kit

15-14049

FMP Pair 1" UFH Mani-

fold Ball Valve (Red/

Blue) 1"FT x 1" MT

15-06426

FMP 1” Manifold

Coupling

15-53120

FMP Fill and drain

valve 1/2" with male

3/4" hose

15-53119

FMP Automatic

Air Vent 1/2"

for Manifold



FMP Premium Manifold - Adding an extra Circuit

This guide shows you how to add an additional circuit to the Premium range manifold using the Single Circuit Manifold Extension Kit

15-53115 - Manifold Extension Kit

1 x 15-53114 Thermostatic Replacement Kit

1 x 15-53117 Lockshield with Flow Meter

1 x 15-53118 Flow Meter Seat

2 x 15-06298 Manifold End Tee Piece

Step 1

The manifold when removed from the box should appear like this. (In this example we are using

a 5-circuit manifold and are going to extend it to become a 6-Circuit).

If the manifold has been pre-assembled (i.e. Air Vents, Fill & Drain Points & End caps have

already been assembled to the manifold). Isolate & drain the system if necessary and remove

these items so the manifold looks like the following image.

Step 2

Both the flowmeter (15-53117) and the flowmeter seat (15-53118) are installed in the

same way: initially inserting by hand and then tightening using an open-ended 24mm

spanner until there is metal to metal contact between the flowmeter/ flowmeter seat

and the manifold. The flowmeter mechanism is designed to be inserted inside the tubular

projection from the flowmeter seat – see Fig.1

Once the above steps are completed the manifold should appear as Fig.2.

Fig.1

Flowmeter Collar

Manifold

Manifold

Take off

15-53117

15-53118

Fig.2



Step 3

The Thermostatic replacement kit (15-53114) is installed initially inserting by hand and

then tightening using an open-ended 24mm spanner until there is metal to metal contact

between it and the manifold.

Once the above steps are completed the manifold should appear as Fig.3

Step 4

The Manifold End tee (15-06298) has a 1”M connection with an o-ring seal and requires

tightening until the seal is compressed fully. The automatic air vents and Fill & drain

points as already supplied with original manifold can then be connected to the top &

bottom ½”F connection on the Manifold End tee pieces.

Once the above steps are completed

the manifold should appear as Fig.4

Adding an extra Circuit to an FMP Manifold

Repeat as above

Fig.3 Fig.4



Multipipe FMC contract manifolds are pre-assembled, supplied complete with flow metres, Manifold finish is nickel plated. Return rail has a capped

integrated electrothermic body (ready for actuator head) per circuit. Flow metres provide a visual indication of flow rate through each circuit.

Pipe is connected to manifold using 3/4” euro-cone pipe connectors.

Contract FMC Manifolds (#35-161..)

Isolation Ball Valve

35-14049 3/4” thread FMC Pair of Manifold 1"

End Caps 35-53128

Accessories for Use with FMC Manifolds

(not supplied with manifold)

35-06201

Flow Meter

35-14049

Pair 1” Isolation

Ball Valves

35-53128

Pair 1” End Caps

20-03161

16x2mm Eurocone


15-91536

Female Blanking

cap 3/4"

15-16161

16x2mm mlcp pipe

repair coupling




Contract FMC Manifolds (#35-161..)

INSTALLATION

When fixing a manifold to timber studding or plaster board walls, it is recommended that fixing timber is placed within the timber wall

construction where the manifold fixing points are to be drilled and screwed. This will ensure a secure fix for the manifold. Where this is not

possible suitable cavity fixings can be used.

Step 1 - Fix the manifold onto the wall using the fixing holes on the bracket and the plugs/ screws provided. It must be 650mm from the top of

the EPS floor insulation to the top header level.

Step 2 - Connect the 1”quarter turn isolation vales to the top and bottom headers (same end) of the manifold. To avoid leaks, ensure that the

washers provided are positioned between the valve face and manifold prior to tightening the union nut.

Step 3 - Connect the combined drain valve and air vent to the top and bottom headers of the manifold on the opposite side to the isolation

valves. Again, to avoid leaks ensure that the fibre washers are in position between the valve face and manifold prior to tightening the union nuts.

Step 4 - The pipe retaining rail should be fixed approximately 175mm below the manifold. It Is recommended that +150mm is added to the

length of the tail over the length of the manifold.

Step 5 - Place the fixing lugs onto the rail, push them tight against either side of the pipe (now protected by the corrugated sleeve) and screw

them tight, once in position.

Manifold Ports 2 3 4 5 6 7 8 9 10 11 12

L (mm) 106 156 206 256 306 356 406 456 506 556 606

Total length (inc Valves + End Sets)

233 283 333 383 433 483 533 583 633 683 733

28mm 50mm

1”

3/4”

210mm

28mm



28-06151 - Water Temperature Control Pack with A rated

UFH Controller - Type 28-06151

Suitable for up to 15Kw heating load, this compact lightweight underfloor thermostatic mixing control complete with Wilo Yono Para class A

efficiency pump has been designed for direct connection to heating manifolds with 210mm centres and is supplied with G1 male O ring sealed

connections as standard.

Its versatile design and O ring connection system provides for simple and quick conversion from left to right hand format if required, as Illustrated.

Installing the control pack to the manifold is simple and quick, requires no additional supporting bracket and so eliminates the need for time

consuming drilling and fixing.

Air Vent

Socket for use with Temperature Gauge

Temp Gauge: Part # 28-06080 (optional extra)

Blanked Port

Pump Outlet Elbow

Wilo Yono Para

A rated Pump

UHC150 Thermostatic

Mixing Valve

HEATING FLOW

HEATING RETURN

G3/4 x G1” O ring

spinning nut

1-1/2” Pump Flange

G3/4 x G1” O ring spinning nut

Boiler Return Port Rp 3/4

Boiler Flow Port Rp 3/4

Assembled for 210mm

Manifold Centres

Inclined Dimension

211mm—212mm



Installation

Insert the G1 spinning nut into the female sockets of the

isolating ball valves on the manifold. Offer the control unit to

the sockets, locating the bottom (TMV) connection first (Fig 1)

then swing the top (mixed flow) connection, aligning the

assembly, then push forward until G1 male threads mate with

female connections.

Screw top and bottom G1 connection

spinning nuts alternatively a few turns at

a time to maintain alignment (Fig 2) until

fully engaged.

Tighten spinning nuts (Fig 3)

using appropriate tools, ensuring both ends of

spinning nut are tightened at the same time in

order to seal both O ring connections

Pump outlet Elbow.

The pump outlet elbow (Fig 4) is fitted with air vent, a blanked port for optional

bypass kit and two temperature gauge sockets with fixing screw. A temperature

gauge (optional extra) can be fitted to either socket so allowing for left or right

handing of manifold connections.

Boiler connections.

The optional ¾ x 1” M/F elbow provides for the option of vertical or horizontal connection of the primary pipe work with the boiler. For vertical pipe runs connect the elbow to the return port and for horizontal pipe runs connect the control valve flow port (Fig 5). Screw in the male thread until the O ring contacts the valve port face then con-tinue to turn clockwise within 1 turn until aligned suitably for the connecting pipe run. Tighten the locknut to secure and seal. Do not overtighten.




Electrical Connection

Connect the pump and zone valves (if fitted) to the electrical control circuit serving the system.

Commissioning

To protect and prevent damage to the mixing control and other devices in the heating circuits, it is recommended that the pipe work connecting to the

boiler be flushed thoroughly of flux and debris before final connection, filling and venting the heating control and system.

With the manifold isolated but filled and pressurised, open the supply connecting the mixing control to the boiler. Purge the primary pipe work until

free of air. Then vent the control unit via the vent on the outlet elbow. Check that the primary pipe work and controls is filled and at system pres-

sure then check all joints for leaks. Open the isolating valves on the manifold to integrate the primary circuit and mixing control and heating circuits.

Check again that the system pressure is correct and that all connections are good. Finally check that the integrated system is free of air via the pump

outlet elbow vent and the manifold vents.

Mixing Control adjustment (Temperature setting)

The thermostatic mixing valve (TMV) is factory set to provide 45’c mixed water to the heating manifold. The mixed water flow temperature can be

adjusted and locked very simply to suit the designed flow requirements within the temperature range of 30-60’c.

With the boiler on and the heating circuits balanced the mixed temperature is easily adjusted by the following method.

1. Unscrew the central screw (Fig 8) approximately ½

turn anticlockwise to release the clutch locking

mechanism.

2. Turn the knob clockwise to decrease and anticlock-

wise to increase the temperature.

3. The numbers on the control knob indicate the approximate

mixed flow temperature when aligned with the indicator rib on the

valve body. Refer to Table 1.

4. Select and dial to the number required as shown in Table 1 then

wait for the system to respond and the valve to stabilise by observ-

ing the temperature gauge (available separately) on the pump out-

let elbow. If required adjust the control knob for further fine adjust-

ment to achieve the required temperature outlet.

5. Tighten the central screw (Fig 8) approximately ½ turn clockwise

to engage the clutch mechanism and lock the temperature setting.




Changing to alternative handed manifold

How to Do: Slacken the spinning nut on the manifold return con-nection remove and transfer to the opposite port (previously boiler return) re-tighten into this port which is now the heating manifold return. Do not over tighten. Slacken the G11/2 pump outlet connection rotating nut by approximately ½ turn anticlockwise. Rotate the pump outlet elbow assembly by 180’ visually align with return port. Lightly tighten the 11/2” rotating pump union nut to retain alignment. Follow installation procedures taking particular care once assembled to manifold that all joints are tight-ened and checked for leaks.

These instructions are written as a guide only and should be taken in the context they are written.

Good engineering practices should be adhered to.




INSTALLATION

Before installation can begin the sub floor must be cleared of all

debris and rubbish.

• Pipe Staples are available in 40mm or 60mm depth for stapling to

insulation.

• Edge insulation is to be installed to all perimeter walls, internal & external

using suitable staples, nails or adhesives

• Floor insulation must be laid directly onto the sub floor to reduce

downward heat losses and comply with any building regulations. The

types and thickness is to be determined by the architect, builder or owner.

Insulation boards should be butted up against the perimeter strip and laid

in a staggered formation.

• Minimum 500 Gauge polythene must be laid on the insulation to form a

slip membrane and prevent ingress of screed into the insulation zone

which will cause thermal bridging. Polythene also prevents screed

additives affecting the insulation board. Lap joints 100mm.

• Depending on your pipe layout lay the clip rail a minimum 100m from side

walls and depending on your pipe pattern 500mm from end walls thus

allowing for pipe returns. The rail has an adhesive backing tape.

Use pipe staples to help secure the rail to the insulation board below.

Lay the rail in rows at maximum 1-metre centres. The rail can be clipped

together and cut as required.

• Connect the flow pipe to the required circuit on the flow manifold and

begin to lay the pipe in accordance with your design.

Firmly push the pipe into the rail slots. The slots are at 50mm centres to

help you accurately place your pipe centres.

Screed-Rail UFH® System



Screed-Clip UFH® System

INSTALLATION

Before installation can begin the sub floor must be cleared of all debris and

rubbish.

• Pipe Staples are available in 40mm or 60mm depth for stapling to insulation.

• Edge insulation is to be installed to all perimeter walls, internal & external

using suitable staples, nails or adhesives

• Floor insulation must be laid directly onto the sub floor to reduce downward

heat losses and comply with any building regulations. The types and thick-

ness is to be determined by the architect, builder or owner.

Insulation boards should be butted up against the perimeter strip and laid in

a staggered formation.

• Minimum 500 Gauge polythene must be laid on the insulation to form a slip

membrane and prevent ingress of screed into the insulation zone which will

cause thermal bridging. Polythene also prevents screed additives affecting

the insulation board. Lap joints 100mm.

• Depending on your pipe layout lay the clip rail a minimum 100m from side

walls and depending on your pipe pattern 500mm from end walls thus allow-

ing for pipe returns. The rail has an adhesive backing tape. Use pipe staples

to help secure the rail to the insulation board below.

• Connect the flow pipe to the required circuit on the flow manifold and begin

to lay the pipe in accordance with your design. Use the pipe staples provided

to secure the pipe every 500mm. These can be fitted easily by hand and

have barbs to prevent them pulling out.



INSTALLATION

Before installation can begin the sub floor must be cleared of all

debris and rubbish.

FOILED XPS / EPS

• The boards are supplied with return loops and return channels at

one end. Lay the boards butt-jointed and trim to cover the c

omplete floor.

• The return grooves are covered with the aluminium foil layer.

These are to be site cut as required using a sharp knife.

If additional grooves are required these can also be site cut

using a hot wire tool.

• Lay the boards butt-jointed and trim to cover the complete floor.

• Begin to lay your foil faced insulation in a constant formation with

all pipe runs correctly lined up.

• Connect the flow pipe to the required circuit on the flow manifold

and begin to lay the pipe in accordance with your design provided.

The pipe is a secure fit in the grooves and is easily snapped into

place.

Float UFH® System (Foiled & Non-Foiled)

NON-FOILED XPS / EPS

Follow installation guide for Foiled XPS / EPS and then

below steps

• Aluminium plates have extremely sharp edges,

please handle with care and wear appropriate PPE.

The plates are grooved with an omega shape en-

suring a snug fit. Some plates are supplied with

score marks these can be snapped along these

marks and used as infill plates.

• Once all boards are laid begin to push the

aluminium diffusion plates into position

please refer to your design for this section.



INSTALLATION

A minimum of 100mm quilt insulation is required below the plates to keep

downward losses to a minimum.

• Aluminium plates have extremely sharp edges, please handle with care

and wear appropriate PPE.

• The plates are grooved with an omega shape ensuring a snug fit. Some plates

are supplied with score marks these can be snapped along these marks and used

as infill plates.

• Allow 200mm gap at end of runs for pipe returns, maintain a gap of 5mm be-

tween plates to allow for expansion.

• Simply fix the plates to the top of joistsusing a staple gun or tacks

• The plates are grooved with an omega shape ensuring a snug fit.

• Connect the flow pipe to the required circuit on the flow manifold and begin to

lay the pipe In accordance with your design.

• You may need to support the plate from below whilst inserting the pipe.

• Ensure the insulation placed below the plates forms a complete blanket without

voids.

Joist-Plate UFH® System



• Connect a test bucket to the flow manifold fill &

test point and secure using a circlip.

• Fill the test bucket with water as required

• Open the valve on the flow fill and drain point.

• Open ALL flow meters and actuator valves and

pressurise the system up to 6bar.

• Close the ball valve on the test pump.

Leave pressurised for an hour monitor the

pressure on the test pump if pressure drops

slightly pump back up to 6bar. As the system

settles down the pressure may drop a small

amount, this is Normal and can be expected.

• Once you are confident there are no leaks

in the system, close the valve on the flow fill

and drain point & remove the test bucket and hose.

• Maintain the system at test pressure until all

follow on trades are complete and the heating

system is connected and ready to be filled. It is

good practise to install a pressure gauge in

place of the flow manifold bleed point so a visual

check can be made on the pressure in the system

When filling the primary pipe work close the manifold ball valves and ensure air in the heating system primary pipework is bled out of the air

vent located on the pump pack upper elbow and not the manifold. This will prevent air entering the underfloor heating system and causing air

locks.

Underfloor heating systems which require drying out times, e.g. floor screed systems are to have sufficient drying time before switching on your

underfloor heating. Natural timber floor finishes need to be climatized in-situ before switching on. In the following we have provided very general

information but specific advice must be sought from your supplier, manufacturer and installer as to the correct procedure for system start up.

Floor Screeds

The floor screed should be laid for a minimum of 28 days before the underfloor heating system is heated. To put the system into operation the

pipework between the boiler and the underfloor heating manifolds should be filled, vented and tested. The underfloor system should be filled,

vented and tested with all isolating valves opened. Ensure that the circulator rotor is free by unscrewing the vent screw in the end of the circulator.

Complete, check and test the system wiring in accordance with the latest edition of the IEE regulations.

Balancing Valves

If the loop balancing valve on the manifold has not been set at the manufacturers works this should now be carried out in accordance with the

suppliers data. The loop control valves are either manual or actuator controlled by means of room thermostats. The valves should be opened and

the water temperature control on the manifold should be set at 25/30°C. Check that all valves and thermostats on the system are correctly set and

that the UFHC control is set to maximum.

Switching on

Switching on the system. Remember that actuators take some time to operate and there will be a 2 to 3 minute wait before anything happens.

Check that the boiler is operating in accordance with the manufacturers instructions and set to run with a flow temperature of 82°C unless the

boiler is directly controlling the flow water temperature to the loops, in which case it should be set to the starting temperature of the system.

Pressurise the System

System Start-up Information



Typical UFH Installation Overview



Base 230v UFH Controls

15-23011

230v 4-Zone Wiring Centre

15-23013


15-23015

230v LCD Single Channel Time Clock

15-23001

230v Dial Thermostat NSB

15-23003

230v LCD Programmable Thermostat NSB

15-23002

230v LCD Digital Thermostat NSB

15-23010

230v Tamper Proof Thermostat NSB

15-23021

Remote Sensor 4.7K for use with

Dial / Tamper Proof thermostats only

15-23020

Empty Enclosure (for remote Sensor)

10-23023

230v Electrothermic Actuator Head



Wireless UFH Controls

18-00096

NeoAir Wireless Thermostat

18-99908

Wireless Programmable Thermostat

c/w Receiver

10-23023


18-00001

Wireless Programmable Thermostat

18-00005

Wireless Touchscreen Thermostat

18-00013

Wireless 8-Zone UH8-RF Wiring Centre

18-00091

Boost - Neo / RF repeater



Premium 230v UFH Controls

18-23013

230v 8-Zone UH8 Wiring Centre

10-23023


18-23001N

230v Dial (DS-SB) Thermostat (UH8 only)

18-23005N

230v Touchscreen Thermostat

18-23011


18-23003N

230v Slimline Programmable Thermostat

18-23017

230v TM1-V3 Single Channel Time Clock

18-23015

230v TM4-TS 4-Channel Time Clock

18-23020

Remote Sensor (10k)

18-230201




24v UFH Controls

15-02413


15-02415

24v LCD Single Channel Time Clock

15-02401

24v Dial Thermostat NSB

15-02403

24v LCD Programmable Thermostat NSB

15-02402

24v LCD Digital Thermostat NSB

15-02410

24v Tamper Proof Thermostat NSB

15-23021

Remote Sensor 4.7K for use with

Dial / Tamper Proof thermostats only

15-23020


35-02422




Smart 230v UFH Controls

Network control of your mains wired heating system from your Smartphone and Tablet

18-23013


18-23098

230v NeoStat Programmable Thermostat

18-99999

neoHub - Neo System Gateway

18-99997

neoUltra - Central Control

10-23023


Example only

Smartphone (not included)



As described in earlier sections, the UFH system operation is relatively straightforward. Hot water from the primary heat source (boiler) is

blended with the return water from the UFH secondary circuit at the mixing valve and distributed, via the secondary UFH pump, to the

distribution manifold and into a series of UFH loops/ circuits of pipe embedded with the floor. Normally, there is a room temperature control,

which will open and close a single or series of actuators mounted on the manifold, or prior to the manifold (single zone), depending upon the

room requirement. If one or all thermostats are calling for heat, there is a boiler interlock switch to energise the boiler

The majority of problems are usually simple installation problems, relating to the wiring or plumbing, or design problems with regards to the limitations of UFH and its suitability for the purpose intended.

In all cases where an electrical fault is reported it is always prudent to check the obvious before replacing components.

• Is there an electrical supply?

• Is it switched on?

• Are there any fuses that may have blown and need replacing?

• Are any components overloaded?

• Is everything wired correctly?

Under no circumstances replace a fuse with a higher rating than stated for the piece of equipment. If the water arriving at the manifold (prior to entering the mixing valve) is either cold or below the design temperature, check:

• The boiler is firing

• The primary pump is fitted

• The primary pump is working

• The boiler is of adequate size

• The primary pipework is sufficiently sized

• The primary pumps are large enough

Operating Problems? If a loop or loops fail to warm, when other zones are working correctly. General things to look for:

• Check that the corresponding manifold valves are open

• Check that there is a demand from the corresponding room thermostat and/or the thermal actuator is open on demand.

• There may be an air lock in the loop, which will require purging, either shut down all other loops by closing the valves at the manifold or turn down all other room thermostats. This will concentrate all pump pressure to the problem lip and may shift the air blockage.

If all else fails the loop can be flushed through with high-pressure water following the instructions details in Filling, Venting and Pressure testing. If circulation is apparent but poor, it may be that the regulating control valve on the manifold required adjustment.

• Check that all pump isolating valves are fully open.

The UFH / Room is not getting Warm? General things to look for.

• That the room thermostat fitted is calling for hear and that the valve has opened using the visual window on the actuator.

• That the room thermostat is connected to and communicating to the correct actuator(s).

• That the room thermostats are not operating in temperate set-back mode.

• That the floor temperature is correct as it enters the floor loops. Although typical design water temperatures are suggested through this guide, there is some element of a learning curve with UFH, as on some occasions the design water temperature may need to be raised after commissioning and once the system has been in operation during a heating season.

• That the primary flow and return connections are installed correctly and not crossed over at the UFH manifold.

• That the primary water temperature is not too low. This needs to be at least 15°C higher than the UFH system water temperature, especially when using a Pump Control Pack.

• That the high limit thermostat on the V5 Compact Control Pack is not set too low.

• That the lockshield valve on the V5 Compact Control Pack is set correctly.

• Thermal resistance of floor covering is not too high, as this could reduce the floor heat output.

If the system is too noisy? General things to look for.

• There is no air in the system

• That all pipes are firmly clipped in place and that the manifold brackets are tight.

• That the UFH pump speed is not set too high.

• The excessive pressure from another circulator in the system is not interfering (hence the importance of having a primary bypass)

FAQ / Trouble Shooting ?



If the running costs are high?

General things to look for.

• That the UFH system is correctly electrically connected to the boiler to prevent short cycling and to ensure that the boiler is not running

when it is not required.

• That the room temperatures and thermostat settings are not too high (typical comfort temperatures are 20°C in living quarters and 18°C in

bedrooms)

• For any open windows or draughts, it is not unknown for windows to be open in cold weather, as the internal comfort remains constant

with thermostatic controls.

• That the boiler is running correctly. Has it been serviced and/or commissioned by an approved engineer.

• That the floor downward losses are high due to inadequate level of floor insulations.

The design water temperature is not met?

General things to look for.

• Check all control valves are correctly installed in their correct orientations and that any remote sensors are installed and located in suitable

position.

• Check the temperature settings are as per design and adjust as necessary, depending on the water temperature control system used.

• Check the primary water temperature is not too low. This needs to be at least 15 degrees in excess of the UFH system temperature.

The system is losing pressure?

General thing to look for.

• If the system is losing pressure either during testing and or after the system has been filled, but the flooring has not been laid, simple

visual manual checks around the manifold and along each look of pipe should identify the problem area.

• If there are no clear visual signs, each loop circuit may require a separate pressure test to identify the exact location.

• If the floor has been laid, identification of the fault can be traced through signs of a wet patch around the leak. Obviously to make the

repair, the floor will have to be raised, in screed floors, excavated carefully in the centre of the wet patch.

• Any leaks on the manifold are generally due to the connection and any loose nuts and unions will require tightening.

Repairs

To make repairs to the pipe, follow the process below:

Repairing the pipe:

• Isolate the damaged pipe loop at the manifold.

• Cut out the damaged section of pipe.

• Prepare both ends of pipe using pipe cutters. For MLC Pipe use a bevelling tool.

• On panel systems, remove a small section of the floating panel or fixed tracked panel, to accommodate the compression fittings.

• Slide the compression adaptor nut over each end of pipe together with olive on PEX pipes, prior to inserting the insert sleeve into each

end.

• Offer both ends of pipe/inserts to the compression coupler and tighten both nuts.

• Ideally, the joint will require and inspection chamber in case further maintenance is required. However, in practice this is often not

practical, and the fitting is wrapped in suitable tape before burying in the screed (ensure approval with the building inspector is ought prior

to doing this)

• Pressure test the system again before laying the floor covering.

FAQ / Trouble Shooting ?



Guarantee & Warranty

The guarantee period shall be 12 months from the date of delivery. During such period, the Company shall remedy any defects in the goods arising

out of defective materials or workmanship provided that the Purchaser shall immediately give notice of such defects to the Company both verbally

and in writing. After giving such notice, the Purchaser shall within 7 days return the defective goods any part thereof to the Company at the

Purchaser’s risk and expense. The company cannot guarantee the quality or use of any third party manufacturer’s fittings with its own,

however supplied.

Warranty claims are subject to proof that the products have been correctly installed.

Warranty does not cover any defect, damage or malfunction in the product which is due to: failure to comply in any respect with Multipipe

installation guidelines, maintenance or operating instruction; faulty storage handling, repair, miss-use; neglect; accident; abuse; or general

wear and tear. Failure as a result of the heat transfer fluid freezing within the pipe will not be covered by this warranty.

During the warranty period, The Company shall replace or remedy any defects in the goods arising out of defective materials or workmanship,

provided that the purchaser shall immediately give notice of such defects both verbally and in writing to The Company.

Before any warranty can be provided, the original purchaser will be required to provide proof or purchase and any supporting information Renovo

may need to conduct any investigation into alleged defect.

Head Office:

Unit 12, Great Hayes Business Park, Lower Burnham Road, Stow Maries, Chelmsford, CM3 6SQ

Midlands Design and Estimating Office:

Ladywood House, Ladywood Works, Leicester Rd, Lutterworth, Leicester LE17 4HD

[email protected]

www.multipipe.co.uk

Sales (Head Office): 01245 227630

Midlands Office: 01245 850799

Technical: 01245 850799

Fax: 01245 698796

UNDERFLOOR HEATING SYSTEMS - Multipipe · Page 4 Technical Installation Guide Multipipe Ltd Tel:...

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