Robertshaw 9420 - Manual
Robertshaw 9420 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – IMPORTANT SAFETY INFORMATION WARNING:; Step 1: Replacing Existing Thermostat; Old Terminal; Figure 1
- Page 3 – NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON; Turn power off to the heating and cooling systems.; TM
- Page 4 – Wiring Diagrams; Mounting Holes; Figure 4; Figure 5
- Page 6 – Step 3: Testing the Thermostat; CAUTION: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE; TERM
- Page 8 – System; Figure 7
- Page 9 – Temperature Differential 2; Stage Delay; Stage Delay
- Page 10 – Reset Switch; Reset; Symptom; Display shows CHECK; Changing Fahrenheit; Thermostat does not turn on system.; Installation; If problems with thermostat cannot be resolved, call:
- Page 11 – Two Year Limited Warranty; warrants to the original contractor; Invensys Climate Controls Americas; Warranty Claims Department
- Page 12 – NOTES
D I G I TA L
N O N - P R O G R A M M A B L E
T H E R M O S TAT
9420
H E AT P U M P
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
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Summary
IMPORTANT SAFETY INFORMATION WARNING: • Always turn off power at main fuse or circuit breaker panel before installing, removing, cleaning, or servicing thermostat. • Read all the information in this manual before installing this thermostat. • This is a 24 VAC low-voltage thermostat. Do not install o...
Recycling Thermostat If this thermostat is replacing a thermostat that contains mercuryin a sealed tube, do not place your old thermostat in the garbage.Contact your local waste management authority for instructionsregarding proper disposal of the thermostat. If you have any ques-tions, call Roberts...
5. Place thermostat against the wall at desired location. Make sure wires will feed through opening (Figure 4) on base of thermostat. 6. Mark placement of mounting holes (Figure 4). Set base aside. 7. If mounting on drywall, tap plastic anchors into wall. NOTE: ENCLOSED PLASTIC ANCHORS DO NOT REQUIR...
