T-4506-203 Johnson Controls Thermostat
$435.80
Dual Temperature Pneumatic Thermostat, Direct Acting, Horizontal Mounting, Without Indexing Switch, Switchover at 17 Psig, 400 SCIM Flow Capacity, 20 SCIM Air Consumption, 13 to 25 Psig Supply Pressure, 55 to 85 Degree Dial Range
Overview
The Johnson Controls T-4506-203 is a high-volume output, dual-temperature pneumatic room thermostat designed to provide individual day and night or two-setpoint temperature control. As a direct-acting, horizontal-mounted device, it modulates controlled HVAC components like valves and damper actuators by producing a proportional output signal in response to space temperature changes. This model is specifically configured without a manual indexing switch, utilizing changes in supply pressure—typically 15 psig for day and 20 psig for night—to switch between its two independent setpoint dials.
Features
- Dual-dial design allows for independent day and night temperature settings
- Direct-acting control with a horizontal mounting orientation
- High-volume air output suitable for rapid response in large pneumatic systems
- Includes a standard Fahrenheit scale on both setpoint dials
- Adjustable sensitivity enables fine-tuning of the proportional response
- Vibration and shock-resistant construction ensures durability in industrial environments
- Pneumatic feedback mechanism provides enhanced control accuracy
Specifications
- Model: T-4506-203
- Action: Direct Acting
- Mounting: Horizontal
- Setpoint Range: 55 to 85 degrees Fahrenheit
- Supply Pressure: 13 to 25 psig (15 psig nominal day, 20 psig nominal night)
- Switchover Pressure: Factory set at 17.5 psig (adjustable 15 to 20 psig)
- Air Consumption: 20 SCIM
- Flow Capacity: 400 SCIM
- Sensitivity: Adjustable from 0.75 to 4.0 psig per degree Fahrenheit
- Air Connections: Two barbed fittings for 5/32 inch O.D. polytubing (Supply and Output)
- Operating Temperature Limits: -20 to 130 degrees Fahrenheit
Applications
- Commercial office buildings requiring day/night setback for energy conservation
- Educational facilities and schools with scheduled occupancy periods
- Hospitals and healthcare institutions utilizing pneumatic control infrastructure
- Industrial spaces needing dual-temperature control for process or comfort stabilization
- Retrofit or replacement projects for existing Johnson Controls T-4000 series installations
| Weight | 2 lbs |
|---|---|
| Dimensions | 4 × 5 × 3 in |
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