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.
1020
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.
1220
Up to 2 Heat / 2 Cool Conventional
Up to 2 Heat 1 / Cool Heat Pump
Read all instructions before proceeding.
This thermostat is compatible with:
•Singlestageheat/coolconventionalandheatpumpsystems
•Conventionalsystemsupto2heat/2cool(1220only)
•
Singlecompressorheatpumpsystemswithanauxiliaryheatstage(1220only)
•250–750millivoltheatonlysystems
Electrical and control specifications:
•ElectricalRating:24VoltAC
•1ampmaximumloadperterminal
•ACPower:18–30VoltsAC
•DCPower:3.0VoltDC(2“AA”AlkalineBatteriesIncluded)
•ControlRange:45°–90°F(7°–32°C)
•TemperatureAccuracy:+/-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
1
Specifications
1020W-100-03
Model number is located on back of thermostat
Non-Programmable
Thermostats
Detailed
Installer Guide
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