Johnson Controls A421GEF-01C Single Stage Digital Temperature Control with 9-7/8 inch Leads (24v-SPDT)

NEMA4X 24VAC TEMP CONTROL

Our A421GEF-01C NEMA 4X 24 VAC temperature control is designed for single stage commercial air conditioning systems. It is a snap-in replacement for the industry standard Emerson C4 microprocessor and can be installed in minutes using the included mounting hardware. The adjustment range of this particular model is 40° F to 120° F, with a setpoint resolution of 0.5° F, circuit breaker protection, and an external jumper that allows for supervisory control of the low volt spindle relay. Features: NEMA 4X (IP55/60) compliant, Combination SPD

Control box with welded wire leads rated for 24-volt 4 amp maximum. Control contains an ambient temperature sensor and a Class AB Amplifier. Operates at Class AB efficiency. The A421-gef is a NEMA 4X box featuring Johnson Controls' exclusive Green Encoder technology.

The Johnson Controls A421GEF-01C Single Stage Digital Temperature Control with 9-7/8 inch Leads (24v-SPDT) is a 24 volt 4 amp solid state amp temperature controller. In the single stage mode, this controller has a 0 to 5VDC input signal with linear output at 0.5 amps per degree C. It uses a standard two wire serial interface protocol for simple daisy chaining applications or direct connection to our Johnson Controls terminal block system.

A compact, DIN rail mounted temperature controller. It is a single stage, PWM style controller designed for use with single stage heating and cooling equipment up to 40 Amp with (2) 24 Volts supply. The non-dimmable SPDT solid state relay can be set from 20o-104oF (-7o to 40oC). A unique manual override switch allows the user to manually force unit off or on without affecting programmed conditions. A 'temperature rising' and 'temperature falling' contacts allow the user to monitor temperatures of multiple devices (such as air handlers, cooling towers, etc.).

This Johnson Controls A421GEF-01C Single Stage Digital Temperature Control with 9-7/8 inch Leads has a well deserved reputation for reliability today in many industrial applications. It can control both heating and cooling processes.

This Heating and Air Conditioning Control is designed for outside air temperature control of 1-stage units. Features a Digital display that can be configured with scroll keys, Temperature display in degrees F or C, Increment/decrement of set point, +/-0.5F adjustments on the field, Auto Revert, 2-wire solid state relay operation and Easy access terminal connections.

A foundation for Johnson Controls' temperature control system, this single-stage unit features plug-in leads on a 9-7/8 in (24.5 cm) centerline and pressure switch mounting alternative on request