T021-M018 Proportional Mixed Air Controller

The T021-M18 thermostat has been specifically designed for stable temperature control of discharge or mixed air dampers used in all types of packaged and custom air handlers. It is a perfect replacement for older type 135 ohm electromechanical thermostats since it provides improved accuracy at a more competitive price. The M18 can also be used as an economizer thermostat with the addition of one relay and a changeover thermostat. Order 022-0003 temperature sensor separately.

Features:

	One 0-10 V d.c. output
	PI control optimized for stable discharge air temperature control
	Built-in minimum position potentiometer
	40-80°F (5-27°C) range
	Conformal coating permits operation down to -35°F

Technical & Installation Bulletin