Description
The Honeywell TP971C2009 is a pneumatic day/night thermostat engineered for direct-acting heating applications in commercial and institutional buildings. Designed for 3-pipe pneumatic systems, this thermostat provides reliable, automatic day/night temperature scheduling without the need for electronic controls or programming interfaces — making it a dependable choice for legacy and new pneumatic HVAC installations alike.
With separate day and night setpoint ranges and dedicated changeover pressures, the TP971C2009 delivers precise zone-level temperature management across a wide variety of occupancy schedules. The thermostat responds to a pneumatic changeover signal from the building’s main air supply, automatically switching between day and night setpoints to optimize comfort and energy efficiency.
Key Features
- Direct acting heating control for pneumatic systems
- Two-temperature (day/night) operation for scheduled setback
- 3-pipe pneumatic system design
- Day setpoint temperature range: 59°F to 90°F
- Night setpoint temperature range: 50°F to 80°F
- Day changeover pressure: 13 PSI
- Night changeover pressure: 18 PSI
- Throttling range: 2–10°F (adjustable)
System Compatibility
- Compatible with standard commercial pneumatic HVAC control systems
- Designed for 3-pipe pneumatic configurations
- Suitable for heating-only zone control in commercial buildings, schools, hospitals, and institutional facilities
Why Choose the Honeywell TP971C2009?
The TP971C2009 offers the proven reliability of Honeywell pneumatic controls with the added flexibility of automatic day/night setback. Its wide day and night setpoint ranges accommodate diverse occupancy requirements, while the adjustable throttling range allows technicians to fine-tune system response for optimal comfort and efficiency. Whether retrofitting an existing pneumatic system or specifying controls for a new installation, the TP971C2009 provides a cost-effective, low-maintenance solution for two-temperature zone control.
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