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BYPASS CONTROLLER COMMISSIONING MAINTE-
NANCE TABLE — See Table 7 for Bypass Controller Com-
missioning Maintenance Table (BPCOMMIS).
Bypass Commis (60 min) — This variable displays whether
the bypass commissioning function has been enabled. The by-
pass commissioning function permits the user to calibrate the
bypass damper and the system pressure sensor. All calibration
decisions will remain disabled until the user forces Bypass
Commissioning to Enable. When the user forces this decision
to Enable, System Mode will be updated to BPCOMMIS to in-
dicate that bypass commissioning is in effect.
Bypass controller commissioning will automatically be dis-
abled if no activity is detected in the commissioning mainte-
nance table (for example, if none of the calibration decisions
are forced or if communication with the zone controller is lost)
for one hour.
Bypass
Commiss:
Default Value
Display Range
Forcible
Damper Calibration — This variable displays whether the
damper calibration process has been enabled. When the user
forces this decision to Enable after Bypass Commissioning has
also been forced to Enable, the bypass damper is calibrated.
If the system fan is on, the bypass controller sends a request
to the Linkage Coordinator zone controller to turn the system
fan off. If the communication fails, the damper calibration pro-
cess will be terminated and this decision will be Disabled.
When the fan is off, the zone controller will drive the damp-
er to the full closed position.
After completing the closed position calibration, the zone
controller will drive the damper to the full open position.
If there was an error during the closed or open position cali-
bration, an alarm will be generated and Damper Cal Alarm will
display Alarm until a successful damper calibration takes place.
When calibration is completed, the force will be removed
from Damper Calibration decision, and the bypass controller
will send a request to the Linkage Coordinator zone controller
to return the system fan to normal operation. The damper will
remain fully open.
NOTE: Bypass controller commissioning will automatically
be disabled if no activity is detected in this maintenance table
for one hour.
Damper
Calibration:
Default Value
Display Range
Forcible
Zero Pressure Cal — This variable displays whether the pres-
sure transducer zero calibration process has been enabled.
When the user forces this decision to Enable after Bypass
Commissioning has also been set to Enable, the pressure trans-
ducer is calibrated.
If the system fan is on, the zone controller will send a re-
quest to the Linkage Coordinator zone controller to turn the
DESCRIPTION
Bypass Commis (60 min)
Damper Calibration
Zero Pressure Cal
Pressure Sensor Cal
Damper Position
System Pressure
System Pressure Setpt
Damper Cal Alarm
Press Sensr Cal Alarm
Disable
Enable/Disable
Yes
Disable
Enable/Disable
Yes
Table 7 — Commissioning Maintenance
VALUE
UNITS
Enable
Disable
Disable
Disable
42
%OPEN
0.00
in H2O
1.50
in H2O
Normal
Normal
14
system fan off. If the communication fails, the damper
calibration process will be terminated and this decision will be
Disabled.
When the fan is off, the zone controller will drive the damp-
er to the full open position.
The bypass controller will measure the output voltage of the
pressure sensor and verify that the output voltage is within the
tolerance of zero pressure voltage of the sensor (1.0 ± 0.1 vdc).
If the pressure sensor voltage failed to decrease to within the
zero pressure tolerance (1.0 ± 0.1 vdc), a Press Sensr Cal
Alarm will be displayed until a successful calibration takes
place.
When calibration is completed, the force is removed from
Zero Pressure Cal decision, and the bypass controller will send
a request to the Linkage Coordinator zone controller to return
the system fan to normal operation. The damper will remain
fully open.
NOTE: This value cannot be forced if Auto Press Cal is set to
Enable in the Sensor Service Configuration Table.
NOTE: Bypass Controller Commissioning will automatically
be disabled if no activity is detected in this maintenance table
for one hour.
Zero Pressure
Cal:
Default Value
Display Range
Forcible
Pressure Sensor Cal — This variable displays whether the
high-end pressure transducer calibration process has been
enabled. The purpose of this process is to correctly calibrate the
pressure transducer. When the user forces this decision to
Enable after Bypass Commissioning has also been set to
Enable, the user may then force the System Pressure to the
correct reading as measured with calibrated test equipment.
From the forced value, the bypass controller calculates a cali-
bration multiplier that will always be applied to the System
Pressure sensor reading. Once the multiplier is calculated, the
force is removed and the multiplier is applied to the System
Pressure sensor reading.
NOTE: Bypass controller commissioning will automatically
be disabled if no activity is detected in this maintenance table
for one hour.
Pressure
Sensor Cal:
Default Value
Display Range
Forcible
Damper Position — This variable displays the damper posi-
tion percent range of rotation determined by the damper feed-
back potentiometer. The bypass controller is designed for use
on dampers with a range of rotation up to 90 degrees.
Damper
Position:
Display Units
Default Value
Display Range
Forcible
STATUS
FORCE
Service
Disable
Enable/Disable
Yes
Disable
Enable/Disable
Yes
% open
0
0 to 100
No
NAME
COMMISS
DMP_CAL
ZR_PSCAL
PS_CAL
DMP_POS
SP_SENSR
SP_SETPT
DAMP_CAL
SP_CAL
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