Continuous Commissioning® Assessment Report - …...Continuous Commissioning® Report for the Gibb...

Continuous Commissioning® Report

for the

Gibb Gilchrist Building

(Bldg. 1600)

Submitted to:

Office of Energy Management

Physical Plant Department

Texas A&M University

Prepared by:

Energy Systems Laboratory

10/30/2007

EXECUTIVE SUMMARY

The Continuous Commissioning®

(CC®)

1 process has been applied to the Gibb Gilchrist

Building. It is a three-story building consisting of offices, conference rooms, and

transportation laboratories, and is located on the West Campus at Texas A&M

University. The HVAC system is a single duct VAV system with pretreated outside air,

and incorporates three air handling units (AHUs) and one outside air handling unit

(OAHU). A Siemens DDC controls system operates all air handling units, pumps, and

terminal boxes.

CC began in this building on May 7, 2007. As of this report date, none of the five

recommended CC measures had been implemented. The CC measures recommended

included: 1) optimizing AHU discharge air temperature set point schedules, 2)

improving OAHU discharge temperature set point scheduling, 3) resetting terminal box

minimum flow at night, 4) programming valve spring ranges correctly for AHUs, and 5)

scheduling the building exhaust fan off during unoccupied periods.

The baseline energy use index (EUI) was 125.2 mBtu/ft2-yr. The baseline energy cost

index (ECI) was $1.666/ft2-yr. Because no CC measures had been implemented at the

time of submittal of this report, a savings analysis involving measured pre-CC and post-

CC data was not performed. However, based on simulation and engineering analysis, it

was estimated that implementation of the recommended CC measures would result in a

total savings of $15,000 per year. This would lower the EUI to an estimated 101.5

mBtu/ft2-yr, and would lower the ECI to an estimated $1.442/ft

2-yr. These values were

based on a rate of $7.347/mmBtu for chilled water, $9.735/mmBtu for hot water, and

$0.079/kWh for electricity.

Additionally, two main comfort issues in this building were investigated. One is that the

second floor felt humid to occupants when they first entered. When the stuck 100%

open chilled water valve on the first floor was fixed, this problem was resolved. The

other comfort issue is that occupants of offices on the west side of the building

complained of hot temperatures and significant variation of temperatures between

window, desk, and thermostat locations. Investigation results indicated that the room

temperature at the desk level was acceptable. The complaints were mainly due to direct

solar radiation on occupants. It is recommended to install and/or apply: internal or

external solar shading or window tint.

1 Continuous Commissioning and CC are registered trademarks of the Texas Engineering Experiment

Station (TEES), the Texas A&M University System, College Station, Texas. To improve readability, the

symbol “®” will sometimes be omitted.

ACKNOWLEDGEMENTS

The Continuous Commissioning process detailed in this report was a collaborative effort

among the Office of Energy Management, Area Maintenance, and the Energy Systems

Laboratory at Texas A&M University. Many persons from each entity are responsible

for the work done in the building, from the field and comfort measurements and CC

measures determination, to the maintenance and controls items implemented. This

document is designed to serve as a deliverable from the Energy Systems Laboratory to

the Office of Energy Management, and primarily details the CC activities and measures

in which the Energy Systems Laboratory has been involved. The lead CC investigator

for this building was Cory Toole. For additional information regarding the information

in this report or the overall Continuous Commissioning program at the Energy Systems

Laboratory, please contact Song Deng at (979) 862-1234.

TABLE OF CONTENTS

EXECUTIVE SUMMARY ................................................................................................ I

ACKNOWLEDGEMENTS .............................................................................................. II

TABLE OF CONTENTS ................................................................................................. III

LIST OF FIGURES ..........................................................................................................IV

LIST OF TABLES ...........................................................................................................IV

BACKGROUND ................................................................................................................ 1

SITE DESCRIPTION ........................................................................................................ 1

General Facility Description .......................................................................................... 1

General HVAC System Description .............................................................................. 2

Energy and Comfort Baselines ....................................................................................... 3

CONTINUOUS COMMISSIONING ACTIVITIES ......................................................... 3

Continuous Commissioning Measures ........................................................................... 3

Continuous Commissioning Results .............................................................................. 8

MAINTENANCE ISSUES AND RETROFIT OPPORTUNITIES ................................... 9

Observed Maintenance Related Issues ........................................................................... 9

Energy Retrofit and Capital Improvement Opportunities ............................................ 11

CONCLUSIONS .............................................................................................................. 11

APPENDIX A – HVAC AS-BUILT INFORMATION ................................................... 12

APPENDIX B – PRE-CC CONTROL SETTINGS ......................................................... 13

APPENDIX C – PRE-CC CONTROL PROGRAMMING ............................................. 14

LIST OF FIGURES

Figure 1. Gibb Gilchrist Building. .................................................................................... 1

Figure 2. Building location. ............................................................................................... 1

Figure 3. Proposed control for OAHU 3-1. ....................................................................... 6

LIST OF TABLES

Table 1. Summary of annual energy use based on the baseline period. ............................ 3

Table 2. Recommended CC measures with priority level and implementation status. ..... 4

Table 3. AHU reset limits during normal occupancy at time of commissioning. ............. 5

Table 4. Programmed and measured AHU valve spring ranges. ...................................... 7

Table 5. Observed maintenance related issues. ............................................................... 10

Table A - 1. CHW and HHW pumping information. ...................................................... 12

Table A - 2. HVAC system airflow design information. ................................................ 12

Table A - 3. Relief and exhaust fans with their design specifications. ........................... 12

Table A - 4. AHU set points in low occupancy mode. .................................................... 13

Table A - 5. AHU set points in unoccupied mode. ......................................................... 13

1

BACKGROUND

Continuous Commissioning is an ongoing process to resolve operating problems,

improve comfort, optimize energy use and identify retrofits for existing commercial and

institutional buildings and central plant facilities. The Energy Systems Laboratory,

which trademarked this process, has been under contract with the Physical Plant at Texas

A&M University since 1997 to systematically commission the campus buildings as

requested. During the time period since this began, more than 70 buildings have been

commissioned, resulting in energy savings to Texas A&M University of millions of

dollars. For the year 2007, 25 buildings (totaling 2.5 million square feet) have been

identified to be commissioned, including the Gibb Gilchrist Building. This building was

identified as a prime candidate for Continuous Commissioning due to its comfort

complaints, and because it had not previously been commissioned. Commissioning

began on April 7, 2007.

SITE DESCRIPTION

General Facility Description

Figure 1. Gibb Gilchrist Building.

Figure 2. Building location.

The Gibb Gilchrist Building, pictured above in Figure 1, was constructed in 1999 and is

located on the west campus of Texas A&M University (see Figure 2 above). It is one of

the buildings used by the Texas Transportation Institute (TTI), and consists primarily of

offices and conference rooms, with some transportation laboratories as well. The

building has three floors for a total area of 67,143 square feet. It is generally occupied

on weekdays from 8:00 AM to 5:00 PM, but also has some occupancy later in the

evening and on weekends.

2

General HVAC System Description

Mechanical

The chilled water system in the building utilizes one 20 hp, 470 gpm pump with VFD

run by EMCS control. Both the pump and the control valve are DDC controlled by

pressure differential. The piping system is two-way variable speed flow without bypass.

The heating water system utilizes one 7.5 hp, 215 gpm pump with VFD run by EMCS

control. Both the pump and the control valve are DDC controlled by pressure

differential. The piping system is two-way variable speed flow without bypass. A

summary of the building pumping information is shown in Table A-1 in the Appendix.

The HVAC system in the building is a single duct, variable air volume system with

terminal reheat, and consists of three air handling units and one outside air pre-treat unit.

The controls system is DDC and is powered by Siemens Apogee. The total design

maximum supply flow in the building is 63,820 cfm, of which by design 7,910 cfm is

outside air. The total design exhaust flow from the building is 4,040 cfm, and is

achieved with one exhaust fan. Tables A-2 and A-3 in the Appendix give an overview

of the air handling units and exhaust fans comprising the building HVAC system, with

their design information.

The lighting system in the building is comprised of T8 lamps on all floors, with motion

sensors in place in offices, but not in conference rooms.

Controls

The pre-CC operation of pumps brought the pumps on according to building demand.

The pumps and control valves controlled to allow the loop differential pressures to meet

their set points. The differential pressure set point for the chilled water loop was reset

between fixed limits according to a weighted average of AHU chilled water valve

positions from all AHUs and the OAHU. The differential pressure set point for the hot

water loop was reset between fixed limits according to a weighted average of terminal

box reheat valve positions and OAHU preheat valve position.

The pre-CC operation of AHUs maintained all of the units running at all times. Each

unit had different settings for normal, late, and later modes. All terminal boxes served

by each AHU were periodically sampled, and their heating and cooling demands and

damper positions were averaged with a weighted averaging function. Static pressure set

points for each AHU were raised or lowered between fixed limits according to average

terminal box damper position, and discharge air temperature set points were raised or

lowered between fixed limits according to average terminal box cooling demand. Zone

temperature cooling set points were between 73 and 76°F, while zone heating set points

were nearly all 70°F.

The pre-CC operation of the outside air handling unit attempted to utilize the unit to

temper the outside air somewhat before it was sent to the AHUs. The cooling

temperature set point was based on outside air dew point temperature, and the preheat

temperature set point was constant. The amount of outside air allowed to each unit was

regulated with pressure independent dampers in the outside air ductwork.

3

Energy and Comfort Baselines

The baseline energy usage for the building before CC occurred is summarized in Table

1. The baseline period chosen was from 1/1/06 through 12/31/06.

Table 1. Summary of annual energy use based on the baseline period.

Annual Use Unit Cost Energy Cost Baseline

Period

ELE 13.0021

(kWh/ft2-yr)

0.079

($/kWh)

1.028

($/ft2-yr)

5/7/06-

5/6/07

CHW 62.49

(mBtu/ft2-yr)

7.347

($/mmBtu)

0.4592

($/ft2-yr)

5/7/06-

5/6/07

HHW 18.30

(mBtu/ft2-yr)

9.735

($/mmBtu)

0.1782

($/ft2-yr)

5/7/06-

5/6/07

The baseline energy use index (EUI) was 125.2 mBtu/ft2-yr. The baseline energy cost

index (ECI) was $1.666/ft2-yr.

Several comfort complaints in the building were brought up at the time of

commissioning. The main issue was that offices on the west end of the building

reportedly experienced numerous hot calls on sunny afternoons, with large temperature

stratification between the window, desk area, and thermostat. In an attempt to combat

this problem, zone cooling temperature set points for offices with west facing windows

had been lowered to 73°F. While this helped, it did not completely solve the problem,

and in fact resulted in some cold complaints from occupants. Other comfort issues

reported were that the second floor was warm and humid relative to the first floor, and

that several other rooms throughout the building either were too cold or too hot for

occupant comfort.

CONTINUOUS COMMISSIONING ACTIVITIES

The Continuous Commissioning process involved a thorough evaluation of current

building conditions and operation, including field measurements, remote monitoring,

and control review. From the investigation performed, the causes of a number of

problems with comfort and energy efficiency in the building were identified. CC

measures have been recommended to aid in allowing this building to operate more

efficiently and to provide better comfort. Additionally, a retrofit opportunity and

maintenance issues that were noted during the CC process have been documented. The

sections that follow describe the conditions found in the building at the time of CC, the

CC measures recommended for improved building performance, and the results achieved

thus far in the building.

Continuous Commissioning Measures

A total of five CC measures have been identified through the CC process, including

AHU shut downs, improved AHU discharge temperature and static pressure set point

4

scheduling, better outside air control, improved differential pressure control of HW and

CHW systems, and terminal box control improvement, among others. These CC

measures are summarized in Table 2, with the level of priority and implementation status

of each as of the report submittal date. Detailed findings and explanations of the

measures follow.

Table 2. Recommended CC measures with priority level and implementation status.

Number Brief CC Measure Description Priority Implementation

Status

CC1 Optimize AHU discharge air temperature set points. High Pending

CC2 Optimize OAHU 3-1 heating and cooling temperature

set point scheduling. High Pending

CC3 Reset terminal box minimum flow at night. Medium Pending

CC4 Program the AHU valve command values to reflect

actual measured spring ranges. Medium Pending

CC5 Schedule exhaust fan to cycle off during unoccupied

periods. High Pending

CC1. Optimize AHU discharge air temperature set point limits.

At the onset of commissioning, each of the AHUs was programmed with demand based

resets on discharge air temperature and static pressure set points. Weighted average

cooling loops and damper positions of the terminal boxes served were calculated, and

these values were used to increase or decrease set points as needed.

The AHUs were scheduled to have different reset limits during Normal Occupancy,

Minimal Occupancy, and Hibernate/Essential Only modes. Table 4 shows the upper and

lower reset limits for each AHU at the time of commissioning during normal occupancy.

For other occupancy mode set points, see the Appendix.

5

Table 3. AHU reset limits during normal occupancy at time of commissioning.

AHU Discharge Air Temperature Set Point Static Pressure Set Point

Min Max Modulation Control Min Max Modulation Control

1 52 55

ACLP<35 & FV105 Room

Temp<74 & FV134B Room

Temp<74, increase by 0.5 0.3 2.3

ACDMP<30 & FV105 Room


Temp<74, decrease by 0.1

ACLP>45 or FV105 Room

Temp>76 or FV134B Room

Temp>76, decrease by 1.0

ACDMP>40 or FV105 Room


Temp>76, increase by 0.2

2 52 55 ACLP<55, increase by 0.5

0.3 2.3 ACDMP<50, decrease by 0.1

ACLP>65, decrease by 1.0 ACDMP>60, increase by 0.2

3 53 57









It was recommended that the discharge temperature reset limit ranges on all of the AHUs

be expanded. It was recommended that an upper limit of 70°F be used. Since

dehumidification would take place at the OAHU, this high temperature would not be a

problem as long as terminal box cooling demand allowed it. Additionally, this would

have the advantage of when most or all of the boxes served were in heat, the primary

flow from the AHU used as minimum flow for each terminal box would essentially be

neutral air, thus saving cooling energy and reheat energy.

This measure had not been implemented as of submittal of this report.

CC2. Optimize OAHU 3-1 heating and cooling temperature set point scheduling.

The pre-CC operation of OAHU 3-1 had the unit preheat the air to a constant 50°F, or to

cool it to eight degrees below outside air dew point temperature, with lower and upper

cooling limits of 55 and 65°F, respectively. The OAHU was also programmed with a

static pressure set point of 0.4 in. W.G.

More energy efficient control of the OAHU set point temperatures was recommended

during commissioning. Figure 3 that follows shows the recommended control for the

OAHU.

6

Occupied or

Unoccupied

Mode?

OccupiedUnoccupied

Turn unit on .

Turn unit off.

Control VFD speed to maintain static

pressure set point.

OA Dew Point

Temp > 55 F?

Set cooling set

point to 57 F to

dehumidify.

Vary cooling set point

from 57 F to 75 F to

maintain the maximum

CHW valve of the AHUs

served at 90% open.

Vary preheat set point

from 40 F to 50 F to

attempt to maintain the

discharge air temperature

of each AHU served at its

set point.

Modulate CHW valve to

maintain cooling set point,

and HW valve to maintain

preheat set point.

YesNo

Are any of the

AHU outside

air dampers

on?

YesNo

Figure 3. Proposed control for OAHU 3-1.

It was suggested that the cooling and heating temperature set backs recommended for the

unit would allow it to operate more efficiently. Additionally, the proposed control

would allow all needed dehumidification to occur at the OAHU level.


7

CC3. Reset terminal box minimum flow at night.

A significant amount of energy consumption in the building can be attributed to high

minimum flows at the terminal boxes. Because of ventilation requirements, these high

flows are sometimes necessary. However, during unoccupied periods, minimum flow is

not needed from the terminal boxes for ventilation purposes. It was therefore

recommended that a general scheduling be implemented, such that when each terminal

box switched to night mode, the minimum flow would be commanded to zero. Besides

saving energy, this measure would also help prevent the overcooling of rooms during

unoccupied periods, which should improve comfort conditions for occupants when first

arriving to their respective spaces.


CC4. Program the AHU valve command values to reflect actual measured spring

ranges.

The spring ranges for each of the AHU valves were measured and compared with the

ranges in place in the PPCL programming at the onset of commissioning. Table 4 below

shows the results of this comparison.

Table 4. Programmed and measured AHU valve spring ranges.

Unit Valve %

Open

Pre-CC PPCL

Pressure

Command

(psi)

Measured

Pressure

Needed (psi)

Note

AHU 1 CHW 0 15 11.5 Valve had recently been

replaced as part of CC. 100 10 3.5

AHU 2 CHW 0 12 12

100 6 3

AHU 3 CHW 0 13 11.5 Valve had recently been

replaced as part of CC. 100 6 3.5

OAHU 3 CHW 0 14 12

100 4 3

OAHU 3 HHW 0 14 14

100 4 7

As noted, two of the valves, those for AHUs 1 and 3, had recently been replaced as part

of the CC process, probably contributing to the differences in programmed and measured

spring ranges. It was noted that with the new valve on AHU 1, discharge air temperature

could not be maintained at its set point because the signal given the valve would not

fully open it.

It was recommended that the ranges given in the PPCL programming be updated for all

valves where this was needed in order to allow the valves to fully open and close. This

was also believed to have a preventive maintenance impact since the valves would not

be as likely to wear out as quickly if they were able to fully open and close. It was noted

that comfort would also be improved in some cases such as for AHU 1.

8

As of submittal of this report, the programmed spring range had only been corrected for

AHU 1, and the measure was still pending for the remainder of the units.

CC5. Schedule exhaust fan to cycle off during unoccupied periods.

At the onset of commissioning, the outside air handling unit, OAHU 3-1, was scheduled

off during unoccupied periods. However, the building restroom exhaust fan, EF-1,

remained on continuously. This created negative pressurization in the building, which

had the potential to cause humidity and mold problems in the building during periods of

humid outdoor conditions. To combat this problem, as well as to save energy, it was

recommended that the building exhaust fan be scheduled to shut down any time the

OAHU was off.


Continuous Commissioning Results

Savings Analysis

Since no CC measures had been implemented at the time of submittal of this report, a

savings analysis involving measured pre-CC and post-CC data was not performed.

However, based on simulation and engineering analysis, it was estimated that

implementation of the recommended CC measures would result in a total savings of

$15,000 per year. This would lower the EUI from 125.2 mBtu/ft2-yr to an estimated

101.5 mBtu/ft2-yr, and would lower the ECI from $1.666/ft

2-yr to an estimated

$1.442/ft2-yr. These values are based on a rate of $7.347/mmBtu for chilled water,

$9.735/mmBtu for hot water, and $0.079/kWh for electricity.

Comfort Improvements

One of the primary objectives of Continuous Commissioning is to improve occupant

comfort levels in buildings. Some of the major comfort issues that this building

experienced before commissioning included hot complaints in west facing offices, more

humid conditions on the second floor than the first, and various hot or cold complaints

from occupants at other locations in the building. A maintenance issue that took place

during commissioning was to replace the chilled water valve on AHU 1. Prior to this,

the humidity levels on the first floor were much lower than necessary because the chilled

water valve was stuck 100% open and would not control, causing discharge air to be

cooled excessively. Humidity readings taken at multiple locations on the second floor

during the commissioning process revealed levels in the 50% range, which was

considered acceptable. However, due to the lower humidity levels on the first floor, the

second floor felt humid to occupants when they first entered. Now that the first floor

valve has been controlling properly, this “comfort complaint” has become a non-issue.

The various other comfort problems noted throughout the building were related to

excessive computer equipment for rooms or occupant preferences. Some HVAC

renovation has already been identified and has begun to provide supplemental cooling to

a server room and to provide individual control to some other rooms with unique needs.

9

A few additional maintenance items were identified during the commissioning process

that aided individual room comfort in some cases.

As previously noted, the major source of comfort complaints in the building at the time

of CC came from offices on the west side of the building whose occupants complained

of hot temperatures and significant variation of temperatures between window, desk, and

thermostat locations. An investigation was performed regarding this issue. It was found

from the field measurement data that the room temperatures at the desk level were

generally consistent with the temperature at the thermostats located indicating solar

radiation is the reason of discomfort for occupants. There are several options to reduce

solar radiation:

(1) Internal shading/solar screen. There are retractable, single or dual shades,

motorized or manual operational solar screens available on the market.

(2) Window tint. It would reduce some of the solar radiation into the offices,

thereby improving comfort conditions.

(3) External shading. These screens can be made light enough to allow occupants to

see out the windows, but have the advantage of absorbing much of the solar heat

before it reaches the windows, allowing the windows to remain cooler, and

thereby helping to maintain a more consistent indoor air temperature in the

offices.

MAINTENANCE ISSUES AND RETROFIT OPPORTUNITIES

Observed Maintenance Related Issues

During the CC process several maintenance-related issues have been observed that

potentially waste energy, cause comfort problems, and sometimes prevent certain CC

measures from being implemented. In order to improve building comfort and maximize

potential energy savings, it has been recommended that these issues be addressed. These

issues are summarized in Table 5 with priorities and implementation status as of the

report submittal date.

10

Table 5. Observed maintenance related issues.

# Maintenance Related Issues Priority Implementation

Status

1 The chilled water valve on AHU 1 leaks on the floor, and has a

leaking diaphragm that will not allow it to build up pressure. High 6/12/2007

2 The front motor bearing on AHU 2 is noisy. Low 5/18/2007

3 The motor on AHU 2 does not appear to be aligned correctly. Medium 5/18/2007

4

Check the canvas within and above the unit connecting the fan

to the duct works on all three AHUs. Big leaks was found on

AHU-1 and small leaks was found on AHU-2 and 3.

Medium 6/12/2007

5 The chilled water valve on AHU 3 will not open all the way

and leaks on the floor. High 6/10/2007

6 The belts are loose on AHU 3. Low 5/21/2007

7

Substance of an unknown origin (dark in color) was noted in

abundance in the fan chamber of AHU 3 and on top of AHU-1.

All AHUs should be checked.

Medium 5/21/2007

8 The preheat valve on OAHU 3 allows a small amount of hot

water to leak by when the valve is commanded fully closed. Low 6/12/2007

9 The motor for OAHU 3 is a little noisy and may need to be

checked. Low 5/18/2007

10 The building heating hot water pump is leaking. High 5/23/2007

11 The fan motor pulley on AHU 1 is not aligned properly. Medium 6/5/2007

12

The CHW secondary supply pressure sensor (4 psi off), CHW

primary supply temperature sensor (4 F off), & HW primary

return pressure sensor needs to be calibrated (3 psi off).

Medium 6/18/2007

13

The flow sensor for terminal box FV-362 fails with flows

above 664 cfm. The cooling maximum set point for the box is

872 cfm.

High 6/18/2007

14

The control programming for the HW loop needs the following

corrections: a) Line 124 should be changed to “A2.AHVLV”;

b) Line 2130 should be modified to add 1 to the equation

instead of 2; c) Line 2150 should be modified to subtract 2

from the equation instead of 1

Medium 6/18/2007

15

The terminal box serving the back part of room 103 (labeled

FVV-1-104 on the prints) does not show to control. It appears

dead. Since this room has the potential to be divided with a

partition, it is important that this TEC be able to control

independently.

Medium Pending

11

Energy Retrofit and Capital Improvement Opportunities

No energy retrofit or capital improvement opportunities were identified during the

Continuous Commissioning Process.

CONCLUSIONS

The Gibb Gilchrist has been a part of the A&M system since 1975. Comfort problems in

the building and the fact that commissioning had never been performed in the building

made it a good candidate for Continuous Commissioning. Thus far none of the five

recommended CC measures has been implemented in the building. It was predicted that

implementation of the proposed CC measures would save $15,000 per year. After

complete implementation of these measures, better energy efficiency will occur in the

building, as well as an increase in the productivity of occupants who will be more

comfortable in their working environment. A number of maintenance issues have been

identified throughout the commissioning process, a majority of which have been

corrected. It is highly recommended that the pending maintenance issues be resolved

and the pending CC measures be implemented as quickly and as completely as possible

to maximize the value of the Continuous Commissioning of this building, and most

importantly, to maximize energy savings and comfort levels in the building. In this way,

the Texas A&M University campus can move forward in its quest for energy efficiency,

and the Continuous Commissioning process will have been beneficial in aiding in this

endeavor.

12

APPENDIX A – HVAC AS-BUILT INFORMATION

Table A - 1. CHW and HHW pumping information.

Chilled Water System Hot Water System

Number of pumps 1 1

Pump control source APOGEE APOGEE

Pump speed control VFD VFD

Pump speed control

method DP DP

Bldg Valve control method DP DP

Piping system type Two-way variable speed

flow loop without bypass

Two-way variable speed

flow loop without bypass

Control valve type DDC DDC

Nameplate GPM 470 215

Nameplate Head (ft) 75 72

Nameplate HP 20 7.5

Table A - 2. HVAC system airflow design information.

Unit

Design

Maximum

Supply

CFM

Design

Maximum

OA CFM

Motor

HP

Design Cooling

Coil Conditions

Design Preheat Coil

Conditions

Capacity

(BTUH) GPM

Capacity

(BTUH) GPM

AHU-1 22,050 3,950 25 756,400 129 -- --

AHU-2 25,640 25,640 25 708,900 116 -- --

AHU-3 34,000 4,000 20 723,500 123 -- --

OAHU-3-1 6,000 800 7.5 584,900 97.5 465,000 46.5

Table A - 3. Relief and exhaust fans with their design specifications.

MAR

K SERVICE TYPE CFM

SP

(inWG)

MAX

FAN

RPM

INTERLOCK

WITH HP

EF-1 EXHAUST BELT DRIVE

CENTRIFUGAL 4,040 0.75 700

DDC

CONTROLS 1

SPF-A STAIRWAY

PRESS.

ROOF

CENTRIFUGAL 4,320 0.5 4,600

FIRE ALARM

SYSTEM AND

DDC

1

SPF-B STAIRWAY

PRESS.

ROOF

CENTRIFUGAL 4,320 0.5 4,600

FIRE ALARM

SYSTEM AND

DDC

1

CSSF-

1,2

CRAWL SPACE

SUPPLY

DIRECT DRIVE

PROPELLER 1,250 0.375 1,760

OAHU-3-1

AND DDC 1/6

CSEF-

1,2

CRAWL SPACE

SUPPLY

DIRECT DRIVE

PROPELLER 1,250 0.375 1,760

OAHU-3-1

AND DDC 1/6

13

APPENDIX B – PRE-CC CONTROL SETTINGS

Table A - 4. AHU set points in low occupancy mode.



1 55 60

ACLP<35 & FV105

Room Temp<74 &

FV134B Room Temp<74,

increase by 0.5 0.1 1.5

ACDMP<30 & FV105

Room Temp<74 &

FV134B Room Temp<74,

decrease by 0.1

ACLP>45 or FV105

Room Temp>76 or

FV134B Room Temp>76,

decrease by 1.0

ACDMP>40 or FV105

Room Temp>76 or

FV134B Room Temp>76,

increase by 0.2

2 56 56

ACLP<55, increase by 0.5

2.0 2.0

ACDMP<50, decrease by

0.1

ACLP>65, decrease by 1.0 ACDMP>60, increase by

0.2

3 55 58

ACLP<35 & FV359

Room Temp<74, increase

by 0.5 0.3 1.75

ACDMP<30 & FV359

Room Temp<74, decrease

by 0.1

ACLP>45 or FV359

Room Temp>75, decrease

by 1.0

ACDMP>40 or FV359

Room Temp>75, increase

by 0.2

Table A - 5. AHU set points in unoccupied mode.



1 57 62













2 57 62 ACLP<55, increase by 0.5

0.1 1.8 ACDMP<50, decrease by 0.1

ACLP>65, decrease by 1.0 ACDMP>60, increase by 0.2

3 53 60









14

APPENDIX C – PRE-CC CONTROL PROGRAMMING

5/3/2007 Texas A&M University 04:01 PM

Panel PPCL Report

Field Panels: TTI RESEARCH.NODE 1, TTI RESEARCH.NODE 2

Programs: *

Line Range: 1 - 32767

Panel System Name: TTI RESEARCH.NODE 1

Program Name: 1600_AHU 01

ET 10 C --- AHU 1 ---

ET 100 C --- DEFININTIONS ---

ET 102 DEFINE(X,"TTI1600")

ET 104 DEFINE(MODE,"1600_AHU1")

ET 106 DEFINE(OAT,"TTI1600.OADBT")

ET 108 DEFINE(OAD,"TTI1600.A1OAD")

ET 110 DEFINE(SFSS,"TTI1600.A1SS")

ET 112 DEFINE(SVF,"TTI1600.A1VFD")

ET 114 DEFINE(SVFV,"1600_A1.SVF.V")

ET 116 DEFINE(DAT,"TTI1600.A1DT")

ET 118 DEFINE(DATS,"1600_A1.DAT.S")

ET 120 DEFINE(CCV,"TTI1600.A1CDV")

ET 122 DEFINE(CCVV,"1600_A1.CCV.V")

ET 124 DEFINE(DAS1,"TTI1600.A1SP1")

ET 126 DEFINE(DASS,"TTI1600.A1SSP")

ET 128 DEFINE(RSMK,"TTI1600.A1RSM")

ET 130 DEFINE(DSMK,"TTI1600.A1DSM")

ET 132 DEFINE(ACLP,"1600_A1.ACLP")

ET 134 DEFINE(ACDMP,"1600_A1.ACDMP")

ET 136 DEFINE(AHVLV,"1600_A1.AHVLV")

ET 200 C --- LOCAL VARIABLES ---

ET 210 LOCAL(XDATS,NDATS,XDASS,NDASS)

ET 250 C --- CONVERT VIRTUAL LAO TO PHYSICAL ---

ET 260 TABLE("%CCVV%","%CCV%",0,15,100,10)

ET 270 TABLE("%SVFV%","%SVF%",0,0,100,10)

ET 300 C --- GLOBAL CALCULATIONS ---

ET 310 C * FLOOR ONE TECS ARE LOCATED ON NODE 02, SO THE

ET 320 C * AVG DAMPER AND VALVE POSITIONS ARE CALCULATED THERE.

ET 700 C --- SAFETIES ---

ET 705 C * SMOKE *

ET 710 IF("%RSMK%" .NE. ON .AND. "%DSMK%" .NE. ON) THEN GOTO 730

E 715 OFF(@SMOKE,"%SFSS%","%OAD%")

E 720 SET(0,"%CCVV%","%SVFV%")

E 725 GOTO 30000

ET 730 RELEAS(@SMOKE,"%SFSS%","%OAD%")

ET 800 C --- DETERMINE MODE / REDIRECT ---

ET 802 IF("%MODE%" .EQ. 0) THEN GOTO 900


E 806 IF("%MODE%" .EQ. 2) THEN GOTO 2000





Panel PPCL Report


Programs: *







15



E 828 GOTO 2000

E 900 C --- UNOCC - ESSENTIAL ONLY ---

E 910 ON("%SFSS%")

E 920 OFF("%OAD%")

E 930 $XDATS = 62

E 940 $NDATS = 57

E 950 $XDASS = 0.8

E 960 $NDASS = 0.1

E 970 GOSUB 20000

E 980 GOTO 30000

ET 1000 C --- NORMAL OCCUPATION ---

ET 1010 ON("%SFSS%","%OAD%")

ET 1020 $XDATS = 55

ET 1030 $NDATS = 52

ET 1040 $XDASS = 2.3

ET 1050 $NDASS = 0.3

ET 1060 GOSUB 20000

ET 1070 GOTO 30000

E 2000 C --- LOW OCCUPATION ---

E 2010 ON("%SFSS%")

E 2020 OFF("%OAD%")

E 2030 $XDATS = 60

E 2040 $NDATS = 55

E 2050 $XDASS = 1.5

E 2060 $NDASS = 0.1

E 2070 GOSUB 20000

E 2080 GOTO 30000

E 3000 C --- OCC3 ---

E 4000 C --- OCC4 ---

E 5000 C --- OCC5 ---

E 6000 C --- WARMUP ---

E 7000 C --- COOLDOWN ---

E 8000 C --- NIGHT HEATING ---

E 9000 C --- NIGHT COOLING ---

E 10000 C --- STOP HEATING ---

E 11000 C --- STOP COOLING ---

E 12000 C --- HIBERNATE (CAMPUS BREAK) ---

E 12010 OFF("%SFSS%","%OAD%")

E 12020 SET(0,"%CCVV%","%SVFV%")


Panel PPCL Report


Programs: *


E 19999 GOTO 30000

ET 20000 C --- SUBROUTINE TO MODULATE VFD AND VALVES / RESET

SETPOINTS ---

ET 20010 SAMPLE(900) GOTO 20040

ET 20020 IF("%DATS%" .EQ. 0 .OR. "%DASS%" .EQ. 0) THEN GOTO 20040

ET 20030 GOTO 20090

E 20040 $LOC1 = "%DATS%"

E 20050 IF("%ACLP%" .LT. 35 .AND. "TTI1600.FV105:ROOM TEMP" .LT. 74

.AND. "TTI1600.FV134B:ROOM TEMP" .LT. 74) THEN $LOC1 =$LOC1 + 0.5

E 20060 IF("%ACLP%" .GT. 45 .OR. "TTI1600.FV105:ROOM TEMP" .GT. 76.

OR. "TTI1600.FV134B:ROOM TEMP" .GT. 76) THEN $LOC1 = $LOC1 - 1.0

E 20070 MIN($LOC1,$LOC1,$XDATS)

E 20080 MAX("%DATS%",$LOC1,$NDATS)

ET 20090 LOOP(0,"%DAT%","%CCVV%","%DATS%",600,15,1,1,50,0,100,0)

ET 20100 SAMPLE(900) GOTO 20120

ET 20110 GOTO 20170

E 20120 $LOC1 = "%DASS%"

E 20130 IF("%ACDMP%" .LT. 30 .AND. "TTI1600.FV105:ROOM TEMP" .LT.

74.AND. "TTI1600.FV134B:ROOM TEMP" .LT. 74) THEN $LOC1 = $LOC1 - 0.1

E 20140 IF("%ACDMP%" .GT. 40 .OR. "TTI1600.FV105:ROOM TEMP" .GT. 76

.OR. "TTI1600.FV134B:ROOM TEMP" .GT. 76) THEN $LOC1 = $LOC1 + 0.2

E 20150 MIN($LOC1,$LOC1,$XDASS)

16

E 20160 MAX("%DASS%",$LOC1,$NDASS)

ET 20170 OOP(128,"%DAS1%","%SVFV%","%DASS%",2500,250,20,1,60,20,100,

0)

ET 20180 RETURN

ET 30000 GOTO 10



ET 10 C --- AHU 2 ---















Panel PPCL Report


Programs: *









ET 138 DEFINE(NGTOVD,"1600_A2.NGTOVD")


ET 210 LOCAL(XDATS,NDATS,XDASS,NDASS,TECCNT,CLPTTL,DMPTTL,

VLVTTL,MDAS)


ET 260 TABLE("%CCVV%","%CCV%",0,12,100,6)

ET 270 TABLE("%SVFV%","%SVF%",0,0,100,10)


ET 302 MIN($MDAS,"%DAS1%","%DAS2%")

ET 310 SAMPLE(120) GOTO 325

ET 315 IF("%ACLP%" .EQ. 0 .AND. "%ACDMP%" .EQ. 0 .AND. "%AHVLV%"

.EQ. 0) THEN GOTO 325

ET 320 GOTO 700

E 325 C --- CALCULATE AVG CLG LOOP ---

E 330 SET(0,"$TECCNT","$CLPTTL","$DMPTTL","$VLVTTL","%NGTOVD%",

$LOC10,$LOC11,$LOC12)

E 345 GOSUB 505 "TTI1600.FV201:DAY.NGT","TTI1600.FV201:CLG

LOOPOUT","TTI1600.FV201:DMPR COMD","TTI1600.FV201:VLV

COMD","TTI1600.FV201:NGT OVRD"















17






Panel PPCL Report


Programs: *
















































Panel PPCL Report


Programs: *


18

E 455 GOSUB 505 "TTI1600.FV247:DAY.NGT","TTI1600.FV247:CLG LOOPOUT

","TTI1600.FV247:DMPR COMD","TTI1600.FV247:VLV COMD","TTI1600.FV24

7:NGT OVRD"



9:NGT OVRD"



2:NGT OVRD"



3:NGT OVRD"



5:NGT OVRD"



6:NGT OVRD"



7:NGT OVRD"



0:NGT OVRD"



3:NGT OVRD"



6:NGT OVRD"



9:NGT OVRD"



1:NGT OVRD"



2:NGT OVRD"



7:NGT OVRD"



9:NGT OVRD"

E 500 GOTO 600


Panel PPCL Report


Programs: *


E 505 C --- SUBROUTINE TO TTL TEC POINTS ---

E 510 IF($ARG1 .EQ. FAILED) THEN GOTO 545

E 515 "$TECCNT" = "$TECCNT" + 1

E 520 "$CLPTTL" = "$CLPTTL" + $ARG2

E 525 MAX($LOC10,$LOC10,$ARG2)

E 530 "$DMPTTL" = "$DMPTTL" + $ARG3


E 540 "$VLVTTL" = "$VLVTTL" + $ARG4


E 544 IF($ARG5 .EQ. 0) THEN "%NGTOVD%" = "%NGTOVD%" + 1

E 545 RETURN

E 600 C --- CALCULATE WEIGHTED AVG ---

E 610 "%ACLP%" = "$CLPTTL" / "$TECCNT" * (3 / 5) + $LOC10 * (2 / 5

)

E 620 "%ACDMP%" = "$DMPTTL" / "$TECCNT" * (3 / 5) + $LOC11 * (2 /

5)

E 630 "%AHVLV%" = "$VLVTTL" / "$TECCNT" * (3 / 5) + $LOC12 * (2 /

19

5)


ET 705 C * SMOKE *




E 725 GOTO 30000
















E 828 GOTO 2000


E 902 IF("%NGTOVD%" .GT. 0) THEN GOTO 2000

E 910 ON("%SFSS%")

E 920 OFF("%OAD%")

E 930 $XDATS = 62

E 940 $NDATS = 57


Panel PPCL Report


Programs: *


E 950 $XDASS = 1.8

E 960 $NDASS = 0.1

E 970 GOSUB 20000

E 980 GOTO 30000


ET 1010 ON("%SFSS%","%OAD%")

ET 1020 $XDATS = 55

ET 1030 $NDATS = 52

ET 1040 $XDASS = 2.3

ET 1050 $NDASS = 0.3

ET 1060 GOSUB 20000

ET 1070 GOTO 30000


E 2010 ON("%SFSS%")

E 2020 OFF("%OAD%")

E 2030 C $XDATS = 58

E 2040 C $NDATS = 55

E 2050 C $XDASS = 1.75

E 2060 C $NDASS = 0.5

E 2062 "%DATS%" = 56

E 2064 "%DASS%" = 2.0

E 2070 GOSUB 20000

E 2080 GOTO 30000

E 3000 C --- OCC3 ---

E 4000 C --- OCC4 ---

E 5000 C --- OCC5 ---

E 6000 C --- WARMUP ---







20

E 12010 OFF("%SFSS%","%OAD%")

E 12020 SET(0,"%CCVV%","%SVFV%")

E 19999 GOTO 30000

ET 20000 C --- SUBROUTINE TO MODULATE VFD AND VALVES / RESET SETPOINT

S ---

ET 20010 SAMPLE(900) GOTO 20040


ET 20030 GOTO 20140

E 20040 $LOC1 = "%DATS%"

E 20050 IF("%ACLP%" .LT. 55) THEN $LOC1 = $LOC1 + 0.5

E 20060 IF("%ACLP%" .GT. 65) THEN $LOC1 = $LOC1 - 1.0




Panel PPCL Report


Programs: *


E 20090 $LOC1 = "%DASS%"

E 20100 IF("%ACDMP%" .LT. 50) THEN $LOC1 = $LOC1 - 0.1

E 20110 IF("%ACDMP%" .GT. 60) THEN $LOC1 = $LOC1 + 0.2




ET 20150 LOOP(128,$MDAS,"%SVFV%","%DASS%",2500,250,20,1,60,20,100,0)

ET 20160 RETURN

ET 30000 GOTO 10



ET 10 C --- AHU 3 ---






















ET 210 LOCAL(XDATS,NDATS,XDASS,NDASS,CLPCNT,CLPTTL,DMPCNT,DMPTTL,VL

VCNT,VLVTTL,MDAS)


ET 260 TABLE("%CCVV%","%CCV%",0,13,100,6)

ET 270 TABLE("%SVFV%","%SVF%",0,0,100,10)


ET 305 MIN($MDAS,"%DAS1%","%DAS2%")


ET 315 IF("%ACLP%" .EQ. 0 .AND. "%ACDMP%" .EQ. 0 .AND. "%AHVLV%" .E

Q. 0) THEN GOTO 325

ET 320 GOTO 700

21


Panel PPCL Report


Programs: *



E 330 SET(0,"$CLPCNT","$CLPTTL","$DMPCNT","$DMPTTL","$VLVCNT","$VL

VTTL")

E 335 $LOC10 = 0

E 340 $LOC11 = 1

E 345 GOSUB 545 "TTI1600.FV304:DAY.NGT",$LOC11,"TTI1600.FV304:CLG

LOOPOUT",$LOC11,"TTI1600.FV304:DMPR COMD",$LOC11,"TTI1600.FV304:VL

V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"


LOOPOUT",$LOC11,"TTI1600.FV320:DMPR COMD",$LOC10,$LOC10



V COMD"



V COMD"

E 400 GOSUB 545 "TTI1600.VV327:DAY.NGT",$LOC11,"TTI1600.VV327:CLG

LOOPOUT",$LOC11,"TTI1600.VV327:DMPR COMD",$LOC10,$LOC10



V COMD"



V COMD"


Panel PPCL Report


Programs: *




V COMD"



V COMD"



V COMD"



22

V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"

E 485 GOSUB 545 "TTI1600.CV372:OCC.UNOCC",$LOC10,$LOC10,$LOC11,"TT

I1600.CV372:DMPR COMD",$LOC11,"TTI1600.CV372:VLV COMD"


Panel PPCL Report


Programs: *




V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"



V COMD"


23


V COMD"

E 540 GOTO 590

E 545 C --- SUBROUTINE TO TTL TEC POINTS ---


E 555 "$CLPCNT" = "$CLPCNT" + $ARG2

E 560 "$CLPTTL" = "$CLPTTL" + $ARG3 .ROOT. (1 / 3)

E 565 "$DMPCNT" = "$DMPCNT" + $ARG4

E 570 "$DMPTTL" = "$DMPTTL" + $ARG5 .ROOT. (1 / 3)

E 575 "$VLVCNT" = "$VLVCNT" + $ARG6

E 580 "$VLVTTL" = "$VLVTTL" + $ARG7 .ROOT. (1 / 3)

E 585 RETURN


E 595 "%ACLP%" = ("$CLPTTL" / "$CLPCNT") .ROOT. 3

E 600 "%ACDMP%" = ("$DMPTTL" / "$DMPCNT") .ROOT. 3

E 605 "%AHVLV%" = ("$VLVTTL" / "$VLVCNT") .ROOT. 3


ET 705 C * SMOKE *


Panel PPCL Report


Programs: *





E F 725 GOTO 30000
















E 828 GOTO 2000


E 910 ON("%SFSS%")

E 920 OFF("%OAD%")

E 930 $XDATS = 60

E 940 $NDATS = 53

E 950 $XDASS = 1.5

E 960 $NDASS = 0.1

E 970 GOSUB 20000

E 980 GOTO 30000


ET 1010 ON("%SFSS%","%OAD%")

ET 1020 $XDATS = 57

ET 1030 $NDATS = 53

ET 1040 $XDASS = 2.3

ET 1050 $NDASS = 0.3

ET 1060 GOSUB 20000

ET 1070 GOTO 30000


E 2010 ON("%SFSS%")

E 2020 OFF("%OAD%")

E 2030 $XDATS = 58

E 2040 $NDATS = 55

E 2050 $XDASS = 1.75

E 2060 $NDASS = 0.3

E 2070 GOSUB 20000

24

E 2080 GOTO 30000


Panel PPCL Report


Programs: *


E 3000 C --- OCC3 ---

E 4000 C --- OCC4 ---

E 5000 C --- OCC5 ---

E 6000 C --- WARMUP ---







E 12010 OFF("%SFSS%","%OAD%")

E 12020 SET(0,"%CCVV%","%SVFV%")

E F 19999 GOTO 30000


S ---

ET 20010 SAMPLE(900) GOTO 20040


ET 20030 GOTO 20090

E 20040 $LOC1 = "%DATS%"

E 20050 IF("%ACLP%" .LT. 35 .AND. "TTI1600.FV359:ROOM TEMP" .LT. 74)

THEN $LOC1 = $LOC1 + 0.5

E 20060 IF("%ACLP%" .GT. 45 .OR. "TTI1600.FV359:ROOM TEMP" .GT. 75)

THEN $LOC1 = $LOC1 - 1.0




ET 20100 SAMPLE(900) GOTO 20120

ET 20110 GOTO 20170

E 20120 $LOC1 = "%DASS%"

E 20130 IF("%ACDMP%" .LT. 30 .AND. "TTI1600.FV359:ROOM TEMP" .LT. 74

) THEN $LOC1 = $LOC1 - 0.1

E 20140 IF("%ACDMP%" .GT. 40 .OR. "TTI1600.FV359:ROOM TEMP" .GT. 75)

THEN $LOC1 = $LOC1 + 0.2



ET 20170 LOOP(128,$MDAS,"%SVFV%","%DASS%",2500,250,20,1,60,20,100,0)

ET 20180 RETURN

ET 30000 GOTO 10


Program Name: 1600_OAHU 03

ET 10 C --- OAHU 3 ---



ET 104 DEFINE(MODE,"1600_OAHU3")


Panel PPCL Report


Programs: *



ET 108 DEFINE(SFSS,"TTI1600.OA3SS")

ET 110 DEFINE(SVF,"TTI1600.OA3VFD")

ET 112 DEFINE(SVFV,"1600_OA3.SVF.V")

ET 114 DEFINE(DAT,"TTI1600.OA3CDT")

25

ET 116 DEFINE(DATS,"1600_OA3.DAT.S")

ET 118 DEFINE(CCV,"TTI1600.OA3CDV")

ET 120 DEFINE(CCVV,"1600_OA3.CCV.V")

ET 122 DEFINE(PHT,"TTI1600.OA3PHT")

ET 124 DEFINE(PHTS,"1600_OA3.PHT.S")

ET 126 DEFINE(PHV,"TTI1600.OA3PHV")

ET 128 DEFINE(PHVV,"1600_OA3.PHV.V")

ET 130 DEFINE(PHP,"TTI1600.OA3PHP")

ET 132 DEFINE(DAS,"TTI1600.OA3DSP")

ET 134 DEFINE(DASS,"TTI1600.OA3SSP")

ET 136 DEFINE(SMK,"TTI1600.OA3SMK")

ET 140 DEFINE(FRZ,"TTI1600.OA3FRZ")

ET 142 DEFINE(DWP,"CAMPUS_OADWP")

ET 144 DEFINE(CSEF1,"TTI1600.CE1SS")

ET 146 DEFINE(CSEF2,"TTI1600.CE2SS")

ET 148 DEFINE(EF1,"TTI1600.EF1SS")

ET 150 DEFINE(DAML,"TTI1600.OA3LAL")


ET 310 C LOCAL( )


ET 410 TABLE("%CCVV%","%CCV%",0,14,100,4)

ET 420 TABLE("%PHVV%","%PHV%",0,14,100,4)

ET 430 TABLE("%SVFV%","%SVF%",0,0,100,10)


ET 510 IF("%OAT%" .LE. 38) THEN ON("%PHP%")

ET 520 IF("%OAT%" .GT. 41) THEN OFF("%PHP%")

ET 530 IF("%PHT%" .LT. 40) THEN SET(@EMER,100,"%PHV%") ELSE RELEAS(

@EMER,"%PHV%")

ET 540 SET("%SFSS%","%EF1%","%CSEF1%","%CSEF2%")


ET 705 C * SMOKE *

ET 710 IF("%SMK%" .NE. ON) THEN GOTO 730

E 715 OFF(@SMOKE,"%SFSS%")

E 720 SET(0,"%CCVV%","%PHVV%","%SVFV%")

E 725 GOTO 30000

ET 730 C * FREEZE *

ET 735 IF("%FRZ%" .NE. ON) THEN GOTO 755

E 740 OFF(@EMER,"%SFSS%")

E 745 SET(100,"%CCVV%","%PHVV%")

E 750 SET(0,"%SVFV%")

E 752 GOTO 30000


Panel PPCL Report


Programs: *


ET 755 C * DRIVE ALARM *

ET 760 IF("%DAML%" .NE. ON) THEN GOTO 780

E 765 OFF(@EMER,"%SFSS%")


E 775 GOTO 30000

ET 780 RELEAS(@SMOKE,"%SFSS%")















E 865 GOTO 2000

E 900 C --- UNOCCUPIED ---

26

E 910 OFF("%SFSS%")


E 930 GOTO 30000


ET 1010 ON("%SFSS%")

ET 1020 $LOC1 = "%DWP%" - 8

ET 1030 MAX($LOC1,$LOC1,55)

ET 1040 MIN("%DATS%",$LOC1,65)

ET 1050 "%PHTS%" = 50

ET 1060 "%DASS%" = 0.4

ET 1070 GOSUB 20000

ET 1080 GOTO 30000

E 2000 C --- MINIMAL OCCUPATION ---

E 2010 OFF("%SFSS%")


E 2030 GOTO 30000

E 3000 C --- OCC3 ---

E 4000 C --- OCC4 ---

E 5000 C --- OCC5 ---

E 6000 C --- WARMUP ---






Panel PPCL Report


Programs: *




E 12010 OFF("%SFSS%")


E F 12030 GOTO 30000


S ---


ET 20020 LOOP(128,"%PHT%","%PHVV%","%PHTS%",200,5,1,1,25,0,100,0)

ET 20030 LOOP(128,"%DAS%","%SVFV%","%DASS%",2500,250,20,1,60,20,100,0

)

ET 20040 RETURN

ET 30000 GOTO 10


Program Name: 1600_FLR1 TEC CALCS

ET 10 C --- CALCULATE AVERAGE TEC POINTS FOR AHU 1 PGM IN NODE 01

---





ET 500 LOCAL(CLPCNT,CLPTTL,DMPCNT,DMPTTL,VLVCNT,VLVTTL)


ET 905 IF("%ACLP%" .EQ. 0 .AND. "%ACDMP%" .EQ. 0 .AND. "%AHVLV%" .E

Q. 0) THEN GOTO 1000

ET 910 GOTO 10000


E 1002 SET(0,"$CLPCNT","$CLPTTL","$DMPCNT","$DMPTTL","$VLVCNT","$VL

VTTL")

E 1004 $LOC10 = 0

E 1006 $LOC11 = 1


LOOPOUT",$LOC11,"TTI1600.FV100:DMPR COMD",$LOC11,"TTI1600.FV100:V

LV COMD"

E 1020 GOSUB 2000 "TTI1600.CV100A:OCC.UNOCC",$LOC10,$LOC10,$LOC11,"

TTI1600.CV100A:DMPR COMD",$LOC11,"TTI1600.CV100A:VLV COMD"

27



LV COMD"



LV COMD"


Panel PPCL Report


Programs: *




LV COMD"

E U 1060 GOSUB 2000 "TTI1600.FV104",$LOC11,"TTI1600.FV104:CLG LOOPOUT

",$LOC11,"TTI1600.FV104:DMPR COMD",$LOC11,"TTI1600.FV104:VLV COMD"



LV COMD"



LV COMD"



LV COMD"



LV COMD"



LV COMD"

E 1120 GOSUB 2000 "TTI1600.VV121:DAY.NGT",$LOC11,"TTI1600.VV121:CLG

LOOPOUT",$LOC11,"TTI1600.VV121:DMPR COMD",$LOC10,$LOC10



LV COMD"



LV COMD"

E 1150 GOSUB 2000 "TTI1600.FV128A:DAY.NGT",$LOC11,"TTI1600.FV128A:C

LG LOOPOUT",$LOC11,"TTI1600.FV128A:DMPR COMD",$LOC11,"TTI1600.FV12

8A:VLV COMD"

E 1160 GOSUB 2000 "TTI1600.FV129B:DAY.NGT",$LOC11,"TTI1600.FV129B:C

LG LOOPOUT",$LOC11,"TTI1600.FV129B:DMPR COMD",$LOC11,"TTI1600.FV12

9B:VLV COMD"



LV COMD"

E 1180 GOSUB 2000 "TTI1600.FV130A:DAY.NGT",$LOC11,"TTI1600.FV130A:C

LG LOOPOUT",$LOC11,"TTI1600.FV130A:DMPR COMD",$LOC11,"TTI1600.FV13

0A:VLV COMD"



LV COMD"

E 1200 GOSUB 2000 "TTI1600.FV134B:DAY.NGT",$LOC11,"TTI1600.FV134B:C

LG LOOPOUT",$LOC11,"TTI1600.FV134B:DMPR COMD",$LOC11,"TTI1600.FV13

4B:VLV COMD"


Panel PPCL Report


Programs: *


28



LV COMD"



LV COMD"



LV COMD"



LV COMD"


LOOPOUT",$LOC11,"TTI1600.FV148:DMPR COMD",$LOC10,$LOC10



LV COMD"



LV COMD"



LV COMD"



LV COMD"



LV COMD"



LV COMD"

E 1999 GOTO 2500

E 2000 C --- SUBROUTINE TO TTL POINTS ---


E 2020 "$CLPCNT" = "$CLPCNT" + $ARG2

E 2030 "$CLPTTL" = "$CLPTTL" + $ARG3 .ROOT. (1 / 3)

E 2040 "$DMPCNT" = "$DMPCNT" + $ARG4

E 2050 "$DMPTTL" = "$DMPTTL" + $ARG5 .ROOT. (1 / 3)

E 2060 "$VLVCNT" = "$VLVCNT" + $ARG6

E 2070 "$VLVTTL" = "$VLVTTL" + $ARG7 .ROOT. (1 / 3)

E 2080 RETURN


E 2510 "%ACLP%" = ("$CLPTTL" / "$CLPCNT") .ROOT. 3

E 2520 "%ACDMP%" = ("$DMPTTL" / "$DMPCNT") .ROOT. 3

E 2530 "%AHVLV%" = ("$VLVTTL" / "$VLVCNT") .ROOT. 3


Panel PPCL Report


Programs: *


ET 10000 GOTO 10


Program Name: 1600_CHW

ET 10 C --- CHW SYSTEM ---


ET 102 DEFINE(SSP,"TTI1600.CWSSP")

ET 104 DEFINE(SRP,"TTI1600.CWSRP")

ET 106 DEFINE(DP,"TTI1600.CWDIF")

ET 108 DEFINE(DPS,"TTI1600.CWDPSP")

ET 110 DEFINE(P1SS,"TTI1600.CWP1SS")

ET 112 DEFINE(P1PR,"TTI1600.CWP1PR")

ET 114 DEFINE(P1VF,"TTI1600.CWP1VF")

ET 116 DEFINE(P1VFV,"1600_CHW.P1VF.V")

ET 118 DEFINE(RTV,"TTI1600.CWRV")

ET 120 DEFINE(RTVV,"1600_CHW.RTV.V")

29

ET 122 DEFINE(A1V,"1600_A1.CCV.V")



ET 128 DEFINE(OA3V,"1600_OA3.CCV.V")

ET 130 DEFINE(AVLV,"1600_CHW.ACCV")

ET 132 DEFINE(A1SS,"TTI1600.A1SS")



ET 138 DEFINE(OA3SS,"TTI1600.OA3SS")



ET 210 LOCAL(DPLOOP,XDPS,NDPS)

ET 220 $XDPS = 20

ET 230 $NDPS = 5

ET 300 C --- GLOBAL ---

ET 310 $LOC1 = "%SSP%" - "%SRP%"

ET 320 TIMAVG("%DP%",2,5,$LOC1)

ET 330 IF("%FRZ%" .OR. "%OAT%" .LT. 35) THEN ON(@EMER,"%P1SS%")

ET 340 IF("%FRZ%" .EQ. OFF .AND. "%OAT%" .GT. 42) THEN RELEAS(@EMER

,"%P1SS%")

ET 350 TABLE("%RTVV%","%RTV%",0,13,100,3)

ET 360 TABLE("%P1VFV%","%P1VF%",0,0,100,10)

ET 800 C --- DETERMINE LEAD/LAG ---

ET 810 C * ONLY ONE PUMP *

ET 900 C --- REDIRECT ---

ET 910 IF("%A1SS%" .OR. "%A1SS%" .EQ. PRFON) THEN GOTO 2000

E 920 IF("%A2SS%" .OR. "%A2SS%" .EQ. PRFON) THEN GOTO 2000


E 940 IF("%OA3SS%" .OR. "%OA3SS%" .EQ. PRFON) THEN GOTO 2000


Panel PPCL Report


Programs: *


E 1000 C --- ALL STOP - NO DEMAND ---

E 1010 OFF("%P1SS%")

E 1020 SET(0,"%RTV%","%P1VF%")

E 1030 GOTO 10000

ET 2000 C --- DETERMINE DP STPT BASED ON DEMAND ---

ET 2010 SET(0,$LOC1)

ET 2020 $LOC1 = $LOC1 + "%A1V%" .ROOT. (1 / 2) * "%A1SS%"



ET 2050 $LOC1 = $LOC1 + "%OA3V%" .ROOT. (1 / 2) * "%OA3SS%"

ET 2060 $LOC1 = $LOC1 / ("%A1SS%" + "%A2SS%" + "%A3SS%" + "%OA3SS%")

ET 2070 $LOC1 = $LOC1 .ROOT. 2

ET 2080 TIMAVG("%AVLV%",10,6,$LOC1)


ET 2100 GOTO 3000

E 2110 $LOC1 = "%DPS%"

E 2120 IF("%AVLV%" .GT. 65) THEN $LOC1 = $LOC1 + 2

E 2130 IF("%AVLV%" .GT. 55 .AND. "%AVLV%" .LT. 65) THEN $LOC1 = $LO

C1 + 1


C1 - 0.5

E 2150 IF("%AVLV%" .LT. 30) THEN $LOC1 = $LOC1 - 1

E 2160 MIN($LOC1,$LOC1,$XDPS)

E 2170 MAX("%DPS%",$LOC1,$NDPS)

ET 3000 C --- MODULATE SYSTEM TO DP STPT ---

ET 3010 LOOP(128,"%DP%","$DPLOOP","%DPS%",1125,110,5,1,33,0,100,0)

ET 3020 C * 0-33 : BOTH PUMPS OFF, MODULATE RTV 10-100% *

ET 3030 C * 33-66 : LEAD PUMP ON @ MIN, MODULATE RTV 20-100% *

ET 3040 C * 66-100: RTV @ 100%, LEAD PUMP 20-100% *

ET 3050 C * LAG PUMP TRIGGERED BASED ON LEAD PUMP'S SPEED *

ET 3060 TABLE("$DPLOOP","%RTVV%",0,15,20,30,33,100,34,20,66,100)

ET 3070 DBSWIT(0,"$DPLOOP",33,38,"%P1SS%")

ET 3080 IF("%P1SS%" .OR. "%P1SS%" .EQ. PRFON) THEN TABLE("$DPLOOP","

%P1VFV%",34,20,66,20,100,100) ELSE SET(0,"%P1VFV%")

30

ET 10000 GOTO 10


Program Name: 1600_HW

ET 10 C --- HW SYSTEM ---


ET 102 DEFINE(SSP,"TTI1600.HWSSP")

ET 104 DEFINE(SRP,"TTI1600.HWSRP")

ET 106 DEFINE(DP,"TTI1600.HWDIF")

ET 108 DEFINE(DPS,"TTI1600.HWDPSP")

ET 110 DEFINE(P1SS,"TTI1600.HWP1SS")


Panel PPCL Report


Programs: *


ET 112 DEFINE(P1PR,"TTI1600.HWP1PR")

ET 114 DEFINE(P1VF,"TTI1600.HWP1VF")

ET 116 DEFINE(P1VFV,"1600_HW.P1VF.V")

ET 118 DEFINE(RTV,"TTI1600.HWRV")

ET 120 DEFINE(RTVV,"1600_HW.RTV.V")

ET 122 DEFINE(A1V,"1600_A1.AHVLV")



ET 128 DEFINE(OA3V,"1600_OA3.PHV.V")

ET 130 DEFINE(AVLV,"1600_HW.AHCV")




ET 138 DEFINE(OA3SS,"TTI1600.OA3SS")



ET 210 LOCAL(DPLOOP,XDPS,NDPS)

ET 220 $XDPS = 15

ET 230 $NDPS = 3

ET 300 C --- GLOBAL ---

ET 310 $LOC1 = "%SSP%" - "%SRP%"

ET 320 TIMAVG("%DP%",2,5,$LOC1)

ET 330 IF("%FRZ%" .OR. "%OAT%" .LT. 35) THEN ON(@EMER,"%P1SS%")

ET 340 IF("%FRZ%" .EQ. OFF .AND. "%OAT%" .GT. 42) THEN RELEAS(@EMER

,"%P1SS%")

ET 350 TABLE("%RTVV%","%RTV%",0,13,100,3)

ET 360 TABLE("%P1VFV%","%P1VF%",0,0,100,10)

ET 800 C --- DETERMINE LEAD/LAG ---

ET 810 C * ONLY ONE PUMP *

ET 900 C --- REDIRECT ---

ET 910 IF("%A1SS%" .OR. "%A1SS%" .EQ. PRFON) THEN GOTO 2000



E 940 IF("%OA3SS%" .OR. "%OA3SS%" .EQ. PRFON) THEN GOTO 2000

E 1000 C --- ALL STOP - NO DEMAND ---

E 1010 OFF("%P1SS%")

E 1020 SET(0,"%RTV%","%P1VF%")

E 1030 GOTO 10000

ET 2000 C --- DETERMINE DP STPT BASED ON DEMAND ---

ET 2010 SET(0,$LOC1)




ET 2050 $LOC1 = $LOC1 + "%OA3V%" .ROOT. (1 / 3) * "%OA3SS%"

ET 2060 $LOC1 = $LOC1 / ("%A1SS%" + "%A2SS%" + "%A3SS%" + "%OA3SS%")

ET 2070 $LOC1 = $LOC1 .ROOT. 3


31

Panel PPCL Report


Programs: *


ET 2080 TIMAVG("%AVLV%",10,6,$LOC1)


ET 2100 GOTO 3000

E 2110 $LOC1 = "%DPS%"

E 2120 IF("%AVLV%" .GT. 55) THEN $LOC1 = $LOC1 + 2


C1 + 2


C1 - 1

E 2150 IF("%AVLV%" .LT. 20) THEN $LOC1 = $LOC1 - 1

E 2160 MIN($LOC1,$LOC1,$XDPS)

E 2170 MAX("%DPS%",$LOC1,$NDPS)

ET 3000 C --- MODULATE SYSTEM TO DP STPT ---

ET 3010 LOOP(128,"%DP%","$DPLOOP","%DPS%",1125,110,5,1,33,0,100,0)

ET 3020 C * 0-30 : BOTH PUMPS OFF, MODULATE RTV 10-100% *

ET 3030 C * 31-66 : LEAD PUMP ON @ MIN, MODULATE RTV 15-100% *

ET 3040 C * 66-100: RTV @ 100%, LEAD PUMP 20-100% *

ET 3050 C * LAG PUMP TRIGGERED BASED ON LEAD PUMP'S SPEED *

ET 3060 TABLE("$DPLOOP","%RTVV%",0,10,30,100,31,15,35,15,66,100)

ET 3070 DBSWIT(0,"$DPLOOP",28,38,"%P1SS%")

ET 3080 IF("%P1SS%" .OR. "%P1SS%" .EQ. PRFON) THEN TABLE("$DPLOOP","

%P1VFV%",34,20,66,20,100,100) ELSE SET(0,"%P1VFV%")

ET 10000 GOTO 10

Continuous Commissioning® Assessment Report - …...Continuous Commissioning® Report for the Gibb...

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