Water Pump Function

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ACG Commissioning Guideline Appendix D

Appendix D

Sample Functional Performance Test Checklists

NOTES TO APPENDIX D

This appendix contains sample functional performance test checklists for a number ofcommonly used HVAC systems. The information for each system includes the following:1. a description of the system including its ma!or components

". a table showing all modes of operation with the status or position of key

e#uipment in each mode$. a se#uence of operations and

%. the functional performance test checklist that corresponds to the preceding

information.

There is no intention in the appendix to pro&ide sample checklists for all possible systems

included in any design. These checklists are intended to pro&ide basic information about

each system so that the functional performance test checklists will logically follow fromit and they will illustrate a le&el of detail that is appropriate in good commissioning

practice and to suggest a practical format.

The sample functional performance test checklists are generic' thus they do not apply to

any specific pro!ect and so the list of test items is generic not specific. Commissioning

agencies must de&elop functional performance test checklists for e&ery system includedwithin the scope of any commissioning pro!ect and those checklists must include e&ery

mode of operation and se#uence of operation co&ering normal abnormal and emergency

conditions that could occur in the specific design.

There is a Table of Contents on the next page listing the sample checklists included in

this appendix.

AC( assumes no responsibility for how the material in this Appendix might be utili)ed

by users of the (uideline' the users assume full responsibility for any and all liability that

may arise from any reference to or use of this material.

*age +,1


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ACG Commissioning Guideline Appendix D

TABLE OF CONTENTS

Chilled -ater ystem..................................................................................................+,%

-ater /oop Heat *ump ystem................................................................................+,10

ake,up Air and 2xhaust ystem.............................................................................+,"3

*ackaged 4ooftop (as Heat5+6 Cool ystem.........................................................+,"$

Variable Air Volume ystem.....................................................................................+,"7

*age +,"


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CHILLED WATER SYSTEM

8T2 +2C49*T9;

The chilled water system is typical of one that may be installed in a large office building.

The system consists of:♦ $ chillers CH,1 through CH,$. Chiller CH,1 is smaller than CH," and CH,$.

♦ 1 plate heat exchanger H2,1. 9t is located between the condenser water system

*,13

♦ A modulating chilled water bypass &al&e controls the differential pressure across

the supply and return piping.

The chilled water distribution system ser&es cooling coils in air handling units. The

system has the following modes of operation:

♦ hutdown

♦ ff

♦ tart,up

♦ Bree cooling


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+2 B *24AT9;

Shutdown Off Start-u Fr!! Coo"#n$Ch#""!r

%o&!rr#d!'

Ch#""!r

%o((u#!d'

P-)


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2D2;C2 B *24AT9;

.1 This se#uence to be read in con!unction with the control drawings and points list.

." The ++C system shall determine when the chillers are to operate based on a

building demand program by monitoring the &arious space temperatures as wellas the outdoor air temperature.

.$ Heat exchanger H2,1 shall be initiated as the source of chilled water when the

outdoor air is cold enough to permit this. The ++C system shall start therespecti&e chilled water pump and cycle the condenser water pumps and the

cooling tower fans in stages in order to maintain the chilled water supply

temperature setpoint of %%EB.


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.1% The ++C system shall modulate the pressure bypass &al&e between the CH-line and the CH-4 line based on the difference between the two as sensed by a

differential pressure transducer in order to maintain water flow through the

chillers and H2,1 at all times. The differential pressure setpoint shall be changedto suit the chilled water pump operating at the time.

.10 The ++C system shall cycle the cooling tower fans in se#uence as re#uired to

maintain the condenser water supply temperature set point. This set point is to beinitially set at @3EB but shall be confirmed with the chiller manufacturer to ensure

maximum chiller efficiency is maintained and no surging takes place.

.1? The ++C system shall monitor the cooling tower fansF current draw and shall

annunciate an alarm upon a fan failure..17 ++C system shall pro&ide a 10 second time delay before the low speed is

energi)ed when switching from high speed to low speed fan operation.

.1@ The ++C system shall monitor a sump water le&el switch in each cooling tower.The ++C system shall open the two way water make up &al&e located in the

Gasement echanical 4oom when the water le&el is below normal. The &al&e

shall close when the desired water le&el is reached..1 The ++C system shall monitor the current draw of the Cooling Tower Biltration

pump and annunciate an alarm upon pump failure.

*age +,?


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H6AC COMMISSIONIN8F9NCTIONAL PERFORMANCE TEST CHEC:LIST


SE;9ENCE OF OPERATION<PASS

FAILNOTE

Shutdown =od!< %h!at#n$ on"5 4!a4on'

− *lace the system into a seasonal shutdown modeI by manual command.

− Confirm that all 13 pumps


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FAILNOTE

Start-u =od!<

− This mode applies when the building is occupied


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SE;9ENCE OF OPERATION< Cont#nu!d PASSFAIL

NOTE

+ecreasing /oad:

− -hen C- temp Q


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SE;9ENCE OF OPERATION< Cont#nu!dPASS

FAILNOTE

Fr!! (oo"#n$ =od! > thru h!at !?(han$!r< %o((u#!d or o&!rr#d! =od!4' %on(! !r da5'

− -hen A temp


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FAILNOTE

Condensing water operation J decreasing cooling load:

− 4ele&ant when CH- temp stays below setpoint P 1.0EB

− -hen CH- temp Q


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FAILNOTE

Ch#""!r =od! %o((u#!d =od!'

− e#uence written with CH," as lead chiller CH,$ as lag chiller

− Temper *,13 hardwire start from CH,$.

− CH,$


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FAILNOTE

Check operation of:

− +aily ++C alternation of lead5lag CH,"$


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WATER LOOP HEAT P9MP SYSTEM

8T2 +2C49*T9;

The water loop heat pump system is typical of one that may be installed in retail

commercial or office buildings. 2ach ceiling,space mounted heat pump ser&es a specific)one of the building.

The system consists of water loop piping throughout the building with:

♦ water loop temperature control panel


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H!at Pu=4

Off %Shutdown' Start-u No d!=and H!at#n$ Coo"#n$

Fan ff n n n nCo=r!44or ff ff ff n n

R!&!r4#n$ 6a"&! , , , Heat Cool

2D2;C2 B *24AT9;

1.1 A9; -AT24 /*

."3 The main water loop circulates water "%57.

."1 The main water loop circulation pumps operate on a lead5lag5backup basis.

."" The packaged heat re!ecter shall be enabled from the main water loop controller based on the loop heat re!ection demand as sensed by the main water loop return

water temperature sensor. The local packaged heat re!ecter controls shall operatethe damper fan and spray pump to maintain setpoint as determined


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FAIL

NOTE

MAIN WATER LOOP

Start u =od!<

− 9nitiate water,loop circulation ++C start,up se#uence with *," as lead pump.

− Confirm that *," starts and runs.

− Confirm that water,loop flow switch confirms flow


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FAIL

NOTE

MAIN WATER LOOP %(ont@d'

Coo"#n$ =od!<

− Applies when water loop return temp.


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SE;9ENCE OF OPERATION< Cont#nu!d

H!at Pu=4< %(ont#nu!d'

Heat

*ump

9+

/ocationH*

n5ff

Ban

Auto5;

T+

*rogram

Heating Cooling

-ater,side Air,side -ater,side Air,side

9nlet utlet 9nlet utlet 9nlet utlet 9nlet utlet

Comments:

*age +,1@

Checks performed by: +ate: print name signature

*4M2CT:

ystem: /ocation:

Area er&ed: 2#uipment:


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MA:E-9P AIR AND EXHA9ST SYSTEM

8T2 +2C49*T9;

This make,up air and exhaust system is typical of one that may be installed in a

commercial5industrial building ser&ing a specific area of the building where there is aneed to supply 133K outside air to balance a significant exhaust air re#uirement.

2xamples of this are industrial shops kitchens boiler rooms etc.

The system consists of:

♦ ceiling mounted supply fan


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2D2;C2 B *24AT9;

1.1 CCD*92+ +2." ccupied mode shall be determined by the time,of,day


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FAIL

NOTE

Start-u<

− 9f A temp Q OOO EB confirm that heating coil &al&e


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PAC:A8ED ROOFTOP 8AS HEATDX COOL SYSTEM

8T2 +2C49*T9;

The roof top unit is typical of one that may be installed in a commercial5industrial5office

building ser&ing a specific area of the building.


♦ packaged roof top unit


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2D2;C2 B *24AT9;

1.1 CCD*92+ +2." ccupied mode shall be determined by the time,of,day


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FAIL

NOTE

O((u#!d =od!<

− Confirm that B is ;

-hen heating is re#uired confirm that:

− A+ is positioned to minimum A setpoint


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FAIL

NOTE

9no((u#!d =od!<

-hen space temp. N night setback heating setpoint confirm that:

− A+ is tightly closed to A.

− Heating and cooling are both BB

− upply fan


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6ARIABLE AIR 6OL9ME SYSTEM

8T2 +2C49*T9;

The air handling system is typical of one that may be installed in a commercial5industrial

building ser&ing a specific area or floor of the building.


♦ air handling unit


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+2 B *24AT9;

2#uipment hutdown ;ormal peration

;ormal Bire Bree)eBree

Cooling.Heating Cooling

;ight

Heating

utdoor

Air

+amper

Closed pen Closed odulating inimum odulating

4eturn Air

+amper pen Closed pen odulating odulating odulating odulating

4elief Air

+amper Closed pen Closed odulating odulating odulating odulating

HeatingCoil *ump

ff n n ff n ff n

Heating

Coilcontrol

&al&e

Closed odulating pen Closed odulating Closed odulating

B,1 ff n ff n n n n

Humidifier

enableClosed Closed Closed pen pen Closed pen

HD,1

control&al&e

Closed Closed Closed odulating odulating Closed odulating

Cooling

coilcontrol

&al&e

Closed odulating Closed Closed Closed odulating Closed

4B,1 ff n ff n n n n

*age +,"7


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2D2;C2 B *24AT9;

1.1 (2;24A/.% n a signal to start the supply and return fans open the return air dampers and

crack the outdoor air damper


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1.? VAV G62

.1 odulate the control damper to maintain the re#uired room temperature.

."


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FAILNOTE

9no((u#!d =od!<

Confirm that:

− upply fan


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FAILNOTE

War=-u<

− A+ stays closed to A until a&g. space temp N occupied heating setpoint.

− -hen a&g. space temp N occupied setpoint then A+ mo&es to min. A position OOOO K A

O((u#!d nor=a" =od!<

Confirm supply air temp.


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FAILNOTE

O((u#!d %nor=a"' =od!%(ont#nu!d'<

9f AT N


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FAILNOTE

Fr!!! =od!<

− n low temperature free)estat


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SE;9ENCE OF OPERATION< Cont#nu!d

6A6 Bo?!4<

The VAV boxes shall modulate the damper and 4eheat HCV to maintain the ++C room setpoint during

day modeI and night modeI < different setpoints in each VAV box controller=.

imulate heating and cooling conditions.

VAV 9+ /ocation +ay ode ;ight ode Heating Cooling

Comments:

*4M2CT:

ystem: /ocation:

Area er&ed: 2#uipment:

Water Pump Function

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