Description
The Schneider Electric (Barber Colman) TK-1731 is a pneumatic dual setpoint room thermostat engineered for commercial heating and cooling applications. Designed to operate on both 15 PSIG and 20 PSIG supply pressures, this thermostat delivers precise, independent control of heating and cooling systems from a single wall-mounted unit — making it an ideal solution for VAV systems, fan coil units, and other pneumatically controlled HVAC equipment.
At 15 PSIG supply pressure, the TK-1731 operates in reverse acting mode with a 55–85°F dial range and a cover legend labeled “Heat,” providing intuitive occupant-facing identification. The normally closed heating and normally closed cooling configurations ensure safe, fail-safe operation in the event of air supply loss.
Key Features
- Dual setpoint design for independent heating and cooling control
- Normally Closed (NC) heating output
- Normally Closed (NC) cooling output
- 15 PSIG supply pressure: 55–85°F dial range, reverse acting
- 20 PSIG supply pressure operation supported
- Cover legend labeled “Heat” for clear occupant identification
- Reverse acting control action at 15 PSIG
- Designed for commercial pneumatic HVAC systems
Applications
- Commercial office buildings and multi-zone HVAC systems
- Fan coil unit (FCU) control
- Variable air volume (VAV) terminal control
- Pneumatic heating and cooling valve sequencing
- Retrofit and replacement for legacy Barber Colman pneumatic thermostats
Product Specifications
- Brand: Schneider Electric (formerly Barber Colman)
- Model / SKU: TK-1731
- Type: Pneumatic Dual Setpoint Room Thermostat
- System: Heating and Cooling
- Heat Action: Normally Closed
- Cool Action: Normally Closed
- Supply Pressure (15 PSIG): 55–85°F Dial Range, Reverse Acting
- Supply Pressure (20 PSIG): Supported
- Cover Legend: Heat
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