Commissioning Instructions

Before You Begin
Setting the Application
7
Siemens Industry, Inc. Start-up Procedures 140-1020
2015-05-07
Setting the Application
Set APPLICATION to the appropriate Constant Volume Controller application.
Application Description
Application Number
Constant Volume Cooling Only 2030
Constant Volume with Electric Reheat 2032
Constant Volume with Hot Water Reheat 2033
Slave Mode 2092
After you set the application, the controller goes through a shut-down/load sequence
as it switches from slave mode to the application selected. After the application loads
and the OVERVIEW report appears, continue with the following procedures.
At the start of the calibration cycle, the controller automatically sets CAL AIR to YES.
When the cycle is complete, CAL AIR returns to NO.
The air velocity sensor calibration cycle begins within three minutes of an application
start-up or initialization, depending on the controller’s address. After this delay, the
calibration cycle takes from 2 to 5 minutes to complete. The air damper closes during
calibration.
NOTE:
You can continue the startup procedure while calibration is underway. However, the
controller will ignore commands to control end devices (such as the damper) until
calibration of the air velocity sensor is finished.
Setting Number of Heat Stages or Valves
NOTE:
Application 2033 does not have the ability to set VLV CNT.
Depending on the application, HTG STG CNT or VLV CNT (if present) refers to electric
heat stages or valves used (enabled).
 For water or steam valve applications, set VLV CNT to the number of valves used
(1 or 2).
 For electric heat applications, check the hardware to verify the number of electric
heat stages wired to the controller (1 to 3) and set HTG STG CNT to this value.
CAUTION
Insufficient airflow across energized electric heating coils can cause equipment
damage.
Minimum flow must provide adequate airflow across energized electric heating coils.