Robertshaw 9420 User Manual

DIGITAL
NON-PROGRAMMABLE
THERMOSTAT
9420
HEAT PUMP
H
NeW
2 Heat / 2 Cool
User's Manual
Quick Start
Installation
Application
The Robertshaw 9420 is a multi-stage thermostat designed to control
24 VAC heat pump systems.
Features
• 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)
1
110-1044B

Robertshaw 9420 Specifications

Electrical Specifications

electrical rating	24 Volt AC (18-30 VAC)
maximum load per terminal	1 amp
total maximum load	3 amp

Temperature Control

temperature control range	45˚- 90˚F (7˚- 32˚C)
accuracy	+/-1˚F (+/-.5˚C)
power	24 VAC

Shipping Information

individual carton dimensions	6.75" x 4.375" x 1.625"
master carton dimensions	9.25" x 5.625" x 7.625"
master carton weight	4.0 lbs.