Airflow Balance - Honeywell Stryker VAV Operating Manual

STRYKER VAV ZIO CONFIGURATION
[nvoApAlarm, IAQalm]
[nvoApAlarm, InvalidSP]
[nvoApAlarm, SpcTempAlm]

AIRFLOW BALANCE

K Factor One Point Balance
1. Change the Wall Module to the contractor view
2. Navigate to PARAMETERS, FLO_CNFG, AREASQFT
3. Verify the correct duct Area: AREASQFT
Duct
Dia
(in.) 2 4 6 8
Area
0.02 0.09 0.20 0.35 0.55 0.78 1.07 1.77 2.18 2.64 3.14
(sq
ft)
63-2730—01
10 12 14 18 20 22
4. Obtain the factory zone terminal K factor from the man-
ufacturer data sheet. If the K factor is unknown, use the
value 1400.
5. Navigate to PARAMETERS, FLO_CNFG, K
6. Set the factory K factor.
7. Navigate to PARAMETERS, AIRFLOSP, MAX_FLO
8. Verify the value of MAX_FLO setpoint.
9. Navigate to PARAMETERS, BALANCE, K_OFFSET
10. Verify that K_OFFSET = 0.
11. Navigate to PARAMETERS, OVERRIDE, FLO_OVRD.
12. Set VAV box override to the maximum occupied airflow
setpoint: FLO_OVRD = HISP
13. Navigate to PARAMETERS, SENSORS, AIRFLOW
14. Monitor AIRFLOW value.
15. After the airflow has settled to a stable value, measure
the actual airflow with a calibrated instrument.
16. Navigate to PARAMETERS, SENSORS, FLOPRESS
17. Monitor the flow pressure.
18. Calculate the new K factor: KFactorNew = AirflowMea-
sured / (FLOPRESS)1/2
19. Calculate the K factor Offset: K_OFFSET = KFactorNew
– factoryKfactor
20. Navigate to PARAMETERS, BALANCE, K_OFFSET
21. Set the new K factor Offset value.
22. Navigate to PARAMETERS, OVERRIDE, FLO_OVRD
Two Point (Min/Max) Balance
1. Change the Wall Module to the contractor view
2. Navigate to PARAMETERS, FLO_CNFG, AREASQFT
3. Verify the correct duct Area: AREASQFT
Duct
Dia
(in.)
2 4
Area
0.02 0.09 0.20 0.35 0.55 0.78 1.07 1.77 2.18 2.64 3.14
(sq
ft)
4. Obtain the factory zone terminal K factor from the man-
ufacturer data sheet. If the K factor is unknown, use the
value 1400.
5. Navigate to PARAMETERS, FLO_CNFG, K
6. Set the factory K factor.
7. Navigate to PARAMETERS, AIRFLOSP, MIN_FLO
8. Verify the value of MIN_FLO setpoint.
9. Navigate to PARAMETERS, AIRFLOSP, MAX_FLO
10. Verify the value of MAX_FLO setpoint.
11. Navigate to PARAMETERS, BALANCE, K_OFFSET
12. Verify that K_OFFSET = 0.
13. Navigate to PARAMETERS, OVERRIDE, FLO_OVRD.
14. Set VAV box override to the minimum occupied airflow
setpoint: FLO_OVRD = LOSP
15. Navigate to PARAMETERS, SENSORS, AIRFLOW
16. Monitor the AIRFLOW for stability at the minimum set-
point value.
17. Navigate to PARAMETERS, BALANCE, MINFLOSP
18. Set the minimum measured flow setpoint: MINFLOSP =
Avg(AIRFLOW)
19. Measure the actual flow with a calibrated instrument.
20. Navigate to PARAMETERS, BALANCE, MIN_FLOW
21. Set the measured minimum flow calibration value:
MIN_FLOW = measuredValue
24
22. Navigate to PARAMETERS, OVERRIDE, FLO_OVRD.
23. Set VAV box override to the maximum occupied airflow
setpoint: FLO_OVRD = HISP
24. Navigate to PARAMETERS, SENSORS, AIRFLOW
14
6 8 10 12 14 18 20 22 24