Commissioning Instructions
Table Of Contents
- Before You Begin
- Verifying Power to the Controller
- Enabling Actuators
- Setting the Application
- Setting Number of Heat Stages or Valves
- Enabling Autozero Module
- Selecting Automatic Calibration Option
- Setting Room Temperature Setpoints
- Setting Override Time
- Enabling Wall Switch
- Setting Fail Mode
- Setting Duct Area
- Setting Flow Coefficient
- Setting Airflow Setpoints
- Setting Controller Address
- Secure Mode
Before You Begin
Setting Room Temperature Setpoints
9
Siemens Industry, Inc. Start-up Procedures 140-1020
2015-05-07
Setting Room Temperature Setpoints
Day (or OCC) cooling setpoint: DAY CLG STPT or OCC CLG STPT
Day (or OCC) heating setpoint: DAY HTG STPT or OCC HTG STPT
Night (or UOC) cooling setpoint: NGT CLG STPT or UOC CLG STPT
Night (or UOC) heating setpoint: NGT HTG STPT or UOC HTG STPT
1. If the room temperature sensor has a setpoint dial that will be used, set STPT DIAL
to YES. Otherwise, leave STPT DIAL to NO.
– Set RM STPT MIN and RM STPT MAX for the minimum and maximum
allowable room temperature setpoint values, respectively. Valid values range
from 55° to 95°F (13° to 35°C). Default values are 55°F (13°C) for RM STPT
MIN and 90°F (32°C) for RM STPT MAX.
2. Setpoint dial configured with a heating/cooling deadband (default).
– To allow the controller to operate with a heating/cooling deadband (functioning
the same as provided when the setpoint dial is not present), use the following
configuration:
– Set the DAY HTG STPT less than the DAY CLG STPT by the deadband (or
zero energy band) that is desired. (For example, DAY HTG STPT = 70°F; DAY
CLG STPT = 74°F, providing a deadband of 4 degrees). Only the difference
between these values is used to determine What setpoint will be used.
– As described below, the setpoint(s) for heating/cooling will be 1/2 of the
deadband above or below the setpoint dial value.
When HEAT.COOL equals HEAT, then:
CTL STPT will equal RM STPT DIAL – 0.5 * (DAY CLG STPT – DAY HTG
STPT) and will be limited by RM STPT MIN and RM STPT MAX.
When HEAT.COOL equals COOL, then:
CTL STPT will equal RM STPT DIAL + 0.5 * (DAY CLG STPT – DAY HTG
STPT) and will be limited by RM STPT MIN and RM STPT MAX.
NOTE: A space where the deadband is used can be more energy efficient than
a space where the deadband is not being used.
3. Setpoint dial configured for zero heating/cooling deadband.
– When the job specification requires a common heating and cooling temperature
setpoint, use the following configuration:
– Set DAY HTG STPT equal to DAY CLG STPT. This configures the setpoint
deadband equal to zero.
– If a setpoint deadband equals zero, then:
CTL STPT equals RM STPT DIAL, and is limited by RM STPT MIN and RM
STPT MAX.
NOTE: A space where the heating/cooling deadband is zero may be more
comfortable than a space where the deadband is being used; however, may
use more energy.
4. Set the room temperature setpoints to the desired values. Heating setpoints are not
present in cooling only applications.