Non-Programmable
Thermostats
1020
1220
1 Specifications
2 About Your Thermostat
3 Installation
4 System Testing
Warning
Attention
Read all instructions before proceeding.
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.
1 Specifications
This thermostat is compatible with:
• Single stage heat / cool conventional and heat pump systems
• Conventional systems up to 2 heat / 2 cool (1220 only)
• Single compressor heat pump systems with an auxiliary heat stage (1220 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
• 1020 – Rc, Rh, O, B, Y1, W1, G, C
• 1220 – Rc, Rh, O, B, Y1, Y2, E/W1, G, W2, C
Single Stage Heat / Cool
Conventional and Heat Pump
Up to 2 Heat / 2 Cool
Conventional and Heat Pump
Model number is located on back of thermostat
5 Setting User Options
6 Operating Your Thermostat
7 Additional Operation Features
8 Thermostat Maintenance
Turn off power to the heating or cooling
equipment before installation.
For installation by experienced service
technicians only.
®
Detailed
Installer Guide
1020W-100-01
Need help?
Do you have a question about the 1020 and is the answer not in the manual?
Questions and answers
What does LS OP terminals on back of t/stat stand for. Now on OP. Will be installing for electric heat. No ht pump