This thermostat requires 24 Volt AC Power or two (2) properly installed
“AA” Alkaline batteries for proper operation. When connecting 24 Volt
AC Power the batteries may be installed as a backup.
For use only as described in this manual. Any other use
will void warranty.
1020NC
Single Stage Heat / Cool
Conventional and Heat Pump
1
Specifications
2
About Your Thermostat
3
Installation
4
System Testing
5
Setting User Options
6
Operating Your Thermostat
7
Additional Operation Features
8
Thermostat Maintenance
®
Warning
Turn off power to the heating or cooling
equipment before installation.
Attention
For installation by experienced service
technicians only.
1220NC
Up to 2 Heat / 1 Cool
Conventional and Heat Pump
Read all instructions before proceeding.
This thermostat is compatible with:
• Single stage heat / cool conventional and heat pump systems
• Conventional systems up to 2 heat / 1 cool (1220NC only)
• Single compressor heat pump systems with an auxiliary heat stage (1220NC only)
• 250 – 750 millivolt heat only systems
Electrical and control specifications:
• Electrical Rating: 24 Volt AC
• 1 amp maximum load per terminal
• AC Power: 18 – 30 Volts AC
• DC Power: 3.0 Volt DC (2 “AA” Alkaline Batteries Included)
• Control Range: 45° – 90° F (7° – 32° C)
• Temperature Accuracy: +/- 1° F (+/- .5° C)
Terminations
• 1020NC – Rc, Rh, O, B, Y1, W1, G, C
• 1220NC – Rc, Rh, O, B, Y1, E/W1, G, W2, C
1
Specifications
1020NCW-100-03
Non-Programmable
Thermostats
Model number is located on back of thermostat
Detailed
Installer Guide
