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KMC Controls CTC-1621/1622 Two-Pipe Room Thermostat, Direct and Reverse Acting

Two-Pipe Room Thermostat, Direct and Reverse Acting

The CTC-1621/1622 thermostats are designed for proportional control of pneumatic valve and damper actuators in HVAC systems. They utilize a highly sensitive bimetal element with feedback and a pilot bleed relay for accuracy and stability. Select the model for direct or reverse acting proportional action. The throttling range is factory set and is field adjustable. Item is pictured with optional cover and scale plate assembled. The scale plate assembly and a cover must be ordered separately (see Accessories section).

Select a link under the "item" tab below to order.

Cat #Descriptions
CTC-1621Direct acting
CTC-1622Reverse acting
Setpoint Range 55 to 85° F (13 to 29° C), adjustable via slider; adjustment may be concealed and locked or limited
Throttling Range 3 to 12° F (1.7 to 6.7° C), factory set @ 3° F, field adjustable up to 12° F
Calibration 9 psig (62 kPa) branch pressure
Supply Pressure 20 psig (138 kPa); 30 psig (207 kPa) maximum
Capacity 200 scim (55 mL/s)
Consumption 20 scim (5.5 mL/s)
Base Material Black ABS
Temperature Limits
Operating 40 to 120° F (4 to 49° C)
Shipping –40 to 140° F (–40 to 60° C)

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