Start-up
VAV Zone II Controllers
CARRIER CORPORATION ©2019
Installation and Start-up Guide
All rights reserved
42
11
Verify that the space sensor and all optional sensors are reading correctly.
NOTE
You must use the i-Vu® application or Field Assistant to configure ZS Sensors.
CAUTION
Before starting the air source fan, make sure the zone terminal dampers are not closed. Starting
the fan with dampers closed will damage the system ductwork.
Commissioning the VAV Zone II
Using Field Assistant or the i-Vu® application:
1
Set damper size. Go to
Properties
>
Configuration
>
Service Configuration
>
Flow Control
>
Details
tab >
Manufacturer's specified air flow at 1" water column
and enter the correct cfm for the damper size.
2
Calibrate the damper travel.
a)
Go to
Properties
>
Configuration
>
Service Configuration
>
Flow Control
>
Details
tab >
Test and
Balance
. Click
Close Damper
and verify it goes to the closed position.
b)
Click
Dampers Full Open
and verify it goes to the full open position.
c)
Verify that the air source is off, and then calibrate the zero airflow reading at the terminal control. Click
Zero Flow
and verify the damper goes to the fully closed position and the airflow transducer is calibrated.
Once the
Autozero complete
message is displayed, make sure the Measured Flow column under
Calibration parameters for Zero Flow reads near zero cfm (liters/second) and the sensor reading should
be less than 0.03.
d)
Click
Automatic Control
to return the damper to normal operation.
3
For Parallel or Series Fan terminals – In the
Locks
section, select the
Fan
's
Lock value to
checkbox, then
select
On
in the drop-down list. Click
Apply
. Verify the fan's operation.
4
For modulating hot water reheat – Go to
Properties
>
I/O Points
tab, then lock
Hot Water Valve
to 100%. If
the controller is configured for Single Duct, make sure the air source fan is on. If ducted heat, verify the heat
works by verifying that the SAT rises. For baseboard heat, physically check the heating element for proper
temperature rise. Release the
Hot Water Valve
.
5
Release the fan.
6
If the controller is part of a linked system, verify
Linkage
>
Airside Linkage Status
shows
Active
.
CAUTION
Pressing the actuator release button and moving the damper or disconnecting the actuator ribbon
connector while the controller is powered will cause the damper position to be out of calibration. To recalibrate the
damper position, you must perform steps 2a–2d above or power cycle the controller.
Summary of Contents for VAV Zone II
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