presented april 16, 2009 at the acg annual meeting in chicago, il. gaylon richardson engineered air...

Presented April 16, 2009 at the ACG Annual Meeting in Chicago, IL. GAYLON RICHARDSON

Engineered Air Balance Co., Inc.Houston, Texas

04/18/23 1

DefinitionIntegrate- join two or more objects or make

something part of a larger whole, or be made part of a larger whole.

For commissioning an integrated system test can be defined as: a test that brings previously functionally tested systems together and simultaneously will test the designed control sequence for all associated systems as a whole in various modes.

04/18/23 2

Examples of Integrated System TestI have included 3 examples of types of integrated

system test.Stair pressurization system which could be in

most buildingsHospital considerations that could work for a

multitude of systemsLaboratory and/or vivarium considerations that

become more complex

04/18/23 3

Examples of Integrated System TestThis discussion is for only HVAC systems but the

same type of testing should be considered for life safety, security, lighting, plumbing, elevators, and any kind of special process systems.

04/18/23 4

Examples of Integrated System Test Stairwell PressurizationEmergency power system with stair well

pressurization system.In buildings that have floors 75 feet above grade a

stair pressurization is required. The system will be tested under normal power when originally tested. When the building looses power and the power is transferred to the emergency generator the stair pressurization system will be retested, which is an integration of the emergency power system with the stair pressurization system.

04/18/23 5

Examples of Integrated System Test Stairwell Pressurizati

This test will determine the stairwell pressurization fans start after emergency power has been established and they are operating with the correct rotation.

This test will also establish the dampers, alarms and smoke detectors are operational under emergency power.

The last part of this test will be to verify everything is operational after returning to normal power.

04/18/23 6

Examples of Integrated System Test HospitalsHVAC Systems with Emergency Power the IST

will verify the following:Air Handling Units (AHUs)

Start under emergency power with correct rotation

All control loops are operationalAll dampers are operationalAll terminal boxes are operational

04/18/23 7

Examples of Integrated System Test Hospitals

Systems returned to normal powerRestart under normal power, AHUs and fan

systems should follow the designed start sequence

All control loops are operationalAll systems back to their normal operationAll dampers are operational and are in the

correct position

04/18/23 8


Exhaust Fans (EFs)Start under emergency power with correct

rotationAll control loops are operationalAll dampers are operationalAll terminal boxes are operational

04/18/23 9


Return to normal powerRestart under normal powerAll control loops are operationalAll dampers are operationalAll terminal boxes are operational

04/18/23 10


Chilled Water PumpsStart under emergency power with correct

rotationAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load

systemCaution systems with coils may not start at the

same time the pump starts.

04/18/23 11


Return to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load



04/18/23 12


Hot Water PumpsStart under emergency power with correct

rotationAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load



04/18/23 13

Examples of Integrated System Test Hospitalsst

Return to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load



04/18/23 14


Chillers and Heat ExchangersStart under emergency power with correct

rotationAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly

load systemTransfer switches for pumps and systems with

coils are sequenced properly

04/18/23 15


Return to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly

load systemTransfer switches for pumps and systems with

coils may not transfer with the chiller’s transfer switch

04/18/23 16

Examples of Integrated System Test Hospitalst

Boilers and Heat ExchangersStart under emergency power with correct

rotationAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly

load systemCaution systems with coils may not start at the


04/18/23 17

Examples of Integrated System Test Hospitals Test

Return to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly

load systemCaution systems with coils may not start at the


04/18/23 18


Smoke Control Systems Under Emergency PowerAll fans and AHUs are off or operating as shown

on the smoke control matrix All fans start under emergency power with

correct rotation as shown on the smoke control matrix

All control loops are operationalAll dampers are operational and are in the

correct position as shown on the smoke control matrix

04/18/23 19


All fans and AHUs stopping and starting meet NFPA 92 and the International Building Code time constraints

All damper opening and closing meet the standards mentioned above

All smoke barriers maintain the correct pressure relationships as shown on the smoke control matrix

04/18/23 20


Smoke Control Systems Under Normal PowerAll fans and AHUs return to their normal

operation.All dampers return to their normal operation

04/18/23 21

Examples of Integrated System Test Laboratories and VivariumsAir Handling Units (AHUs) and Exhaust Systems integrated

at the lab or VivariumVerify all room pressures are stabilized

HVAC Systems with Emergency Power Air Handling Units (AHUs) and associated Exhaust

systemsStart under emergency power with correct rotation (If

the control system has UPS power the control program will require additional programming to avoid alarms and be able to start the systems)

Verify all control loops are operationalVerify all dampers are operationalVerify all valves are operational

04/18/23 22

Examples of Integrated System Test Laboratories and Vivariums

Verify startup follows the specified start procedure and how long it takes to establish all room pressuresReview the transfer switch time and which

systems are assigned to each transfer switchBe careful with rooms that are to be positive, when

the sequence requires the exhaust system to be operational before the supply systems are allowed to start

On large manifold systems (both supply and exhaust) trending may be required on all AHUs, EFs, room pressurization, alarms, and control loops

04/18/23 23


Return to normal powerRestart under normal power (If the control

system has UPS power the control program will require additional programming to avoid alarms and start the systems)

All control loops are operationalAll dampers are operationalAll valves are operational

04/18/23 24


Chilled Water PumpsStart under emergency power with correct rotationAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load systemReturn to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load system

04/18/23 25


Hot Water PumpsStart under emergency power with correct rotationAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load system ,

because transfer switch timing and restartReturn to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient coils are operational to properly load system ,

because transfer switch timing and restart

04/18/23 26


Chillers and Heat ExchangersStart under emergency power with correct rotationAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly load

system , because transfer switch timing and restartReturn to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly load

system , because transfer switch timing and restart

04/18/23 27


Boilers and Heat ExchangersStart under emergency power with correct rotationAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly load

system, because transfer switch timing and restartReturn to normal powerRestart under normal powerAll control loops are operationalAll valves are operationalSufficient pumps are operational to properly load

system, because transfer switch timing and restart

04/18/23 28


Smoke Control Systems in Labs and Vivariums are usually passive, if an AHU goes down because of an internal smoke detector the exhaust will remain operational but this test should consider the negative pressures created in the building

If there is a smoke controlVerify which fans and AHUs are off or operating as

shown on the smoke control matrix All control loops are operationalAll dampers are operational and are in the correct

position as shown on the smoke control matrix

04/18/23 29


All fan stopping and starting and damper opening and closing meet NFPA 92 time constraints

All smoke barriers maintain the correct pressure relationships as shown on the smoke control matrix

Verify fans and AHUs remain operational under emergency power with correct rotation as shown on the smoke control matrix

04/18/23 30


Verify all control loops remain operationalVerify dampers are operational and are in the

correct position as shown on the smoke control matrix

Verify all fan stopping and starting and damper opening and closing meet NFPA 92 time constraints

Verify all smoke barriers maintain the correct pressure relationships as shown on the smoke control matrix and meet the laboratory and Vivarium pressure requirements

04/18/23 31

Questions

04/18/23 32

presented april 16, 2009 at the acg annual meeting in chicago, il. gaylon richardson engineered air...

Documents

stair pressurization

normal power restart

tested systems

examples of types

fan systems

associated systems

control loops

emergency generator