Robertshaw 9420 User Manual

9420

NeW

The Robertshaw 9420 is a multi-stage thermostat designed to control 
24 VAC heat pump systems.

• Summer and winter setpoints

• Large back lit display

• Adjustable 1

st

stage temperature differential: 0.5°F to 3.0°F 

(0.5°C to 1.5°C)

• Adjustable 2

nd

stage temperature differential: 1°F to 6°F 

(0.5°C to 3.0°C)

• Adjustable 2

nd

stage delay (10-40 min.)

• Compressor short cycle protection

• Accuracy within ±1°

• Zone system compatible as a master thermostat

• Permanent memory retention

• Fahrenheit/Celsius display option

• Adjustable from 45°F  to 90°F (7°C - 32°C)

• Quick wire terminal block

• Automatic heating shutdown if temperature exceeds 94°F (34°C)

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