Controls VAV and CV
8.Supply Air Static Pressure Setpoint
9.Minimum Outside Air Flow Setpoint
10.Morning Warm Up Setpoint
11.Economizer Dry Bulb Enable Setpoint
12.Supply Air Reheat Setpoint
13.Minimum Outside Air Position Setpoint
14.Occupied Dehumidification Setpoint
15.Unoccupied Dehumidification Setpoint
16.Occupied Humidification Setpoint
17.Unoccupied Humidification Setpoint
Binary Outputs - each of the five (5) relay outputs can be mapped to any/ all of the available diagnostics.
Binary Input - the single binary input can initiate or terminate the Demand Limit mode of operation via a field supplied switch or contact closure.
Generic Building Automation System Module (GBAS 0-10 vdc)
The Generic Building Automation System Module (GBAS
Analog
1.Occupied Zone Cooling Setpoint (CV only)
2.Unoccupied Zone Cooling Setpoint (CV only)
3.Occupied Zone Heating Setpoint (CV only)
4.Unoccupied Zone Heating Setpoint (CV only)
5.Supply Air Cooling Setpoint (VAV only)
6.Supply Air Heating Setpoint (VAV only)
7.Space Static Pressure Setpoint
8.Supply Air Static Pressure Setpoint
9.Minimum Outside Air Flow Setpoint
10.Morning Warm Up Setpoint
11.Economizer Dry Bulb Enable Setpoint
12.Supply Air Reheat Setpoint
13.Minimum Outside Air Position Setpoint
14.Occupied Dehumidification Setpoint
15.Unoccupied Dehumidification Setpoint
16.Occupied Humidification Setpoint
17.Unoccupied Humidification Setpoint
Analog
1.Outdoor Air Temperature
2.Zone Temperature
3.Supply Air Temperature (VAV only)
4.Supply Air Pressure (VAV only)
5.Space Pressure
6.Space Relative Humidity
7.Outdoor Air Relative Humidity
8.Space CO2 Level
9.Heat Staging (%)
10.Outdoor Air Damper Position
11.Outdoor Airflow
Binary Output - the single relay output can be mapped to any/all of the available diagnostics.
Binary Input - the single binary input can initiate or terminate the Demand Limit mode of operation, via a field supplied switch or contact closure.
Chilled Water Coil - Freeze Stat
A low limit thermostat, mounted on the entering air side of the coil, is used to help prevent the chilled water coil from freezing during periods of low ambient temperature. If the temperature falls below a predetermined value the low limit
thermostat will trip, the hydronic valve will be fully opened, the supply fan will shut off, and the fresh air dampers will close.
Steam and Hot Water Coil - Freeze Avoidance
Freeze Avoidance is a feature which helps prevent freezing of steam or hot water heat coils during periods of unit inactivity and low ambient temperatures. Whenever the unit supply fan is off, the outdoor air temperature is monitored. If the temperature falls below a predetermined value, the heating valve is opened to a position selected at the unit mounted Human Interface to allow a minimum amount of steam or hot water to flow through the coil and avoid freezing conditions.
Applications with Chilled Water Coil
Occupied/Unoccupied
Switching
Description - 3 ways to switch Occupied/Unoccupied:
1.Night Setback (NSB) Panel
2.
3.TRACER (or 3rd Party BAS with LCI module)
Night Setback Sensors
Trane's night setback sensors are programmable with a time clock function that provides communication to the air handler unit through a
Night setback (unoccupied mode) is operated through the time clock provided in the sensors with night setback. When the time clock switches to night setback operation, the outdoor air dampers close and heating/cooling can be enabled or disabled depending on setup parameters.
As the building load changes, the night setback sensor energizes the air handler heating/cooling (if enabled)
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