KMC Controls CTC-1621-103 Stat

The KMC Controls CTC-1621-103 is a high-precision, two-pipe pneumatic thermostat engineered for the proportional control of pneumatic valve and damper actuators within commercial HVAC systems. This direct-acting (D.A.) vertical model features a single-setpoint design with a functional range of 55 to 85??F, making it a reliable standard for building automation and legacy pneumatic environments. Utilizing a highly sensitive bimetal element paired with a pilot bleed relay, this thermostat ensures stable, accurate feedback and consistent branch pressure regulation without the hunting common in lower-grade units. Developed for vertical mounting, the CTC-1621-103 facilitates easy integration into existing two-pipe pneumatic infrastructures. The field-adjustable throttling range (typically 3?? to 12??F) allows technicians to fine-tune system response based on specific zone loads. For security in high-traffic areas, setpoint sliders can be limited or locked using HFO-0027 stops, preventing unauthorized adjustments while maintaining calibrated environmental conditions.

• Stable Control: Employs a pilot relay and sensitive bimetal element for precise feedback and minimal setpoint drift.
• Field Flexibility: Features a factory-set throttling range that is fully field-adjustable to match specific actuator requirements.
• Enhanced Durability: Constructed with flame-retardant plastic housing designed to withstand standard commercial mechanical room conditions.
• Tamper Resistance: Setpoint sliders are compatible with locking stops (HFO-0027) to maintain facility-wide energy standards.
• Broad Compatibility: Supports a maximum supply pressure of 30 PSI, making it compatible with most standard pneumatic control air systems.

• What is the action of the CTC-1621-103? This is a direct-acting (D.A.) thermostat; an increase in temperature results in an increase in branch line pressure.
• Does this include a scale plate and cover? While many "value packages" (CTC-162X-103) include them, standard base units may require external scale plates and covers to be ordered separately.
• Can this be used for cooling and heating? Yes, provided the system is a two-pipe pneumatic setup where the thermostat action aligns with your actuator requirements (D.A. for this specific model).

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.