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.
Thermostat installation and all
components of the system shall conform to Class II Circuits per NEC code.
For use only as described in this manual. Any other use
will void warranty.
2020NC
Single Stage Heat / Cool
Conventional and Heat Pump
1
Specifications
2
About Your Thermostat
3
Installation
4
System Testing
5
Setting User Options
6
Setting Your Program Schedule
7
Operating Your Thermostat
8
Additional Operation Features
9
Thermostat Maintenance
®
Warning
Turn off power to the heating or cooling
equipment before installation.
Attention
For installation by experienced service
technicians only.
2220NC
Up to 2 Heat / 1 Cool Conventional
Up to 2 Heat / 1 Cool 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 (2220NC only)
•
Single compressor heat pump systems with an auxiliary heat stage (2220NC)
• 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
• 2020NC – Rc, Rh, O, B, Y1, W1, G, C
• 2220NC – Rc, Rh, O, B, Y1, E/W1, G, W2, C
1
Specifications
2020NCW-100-05
Model number is located on back of thermostat
Programmable
Thermostats
Detailed
User Guide
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