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.
1025NC
Single Stage Heat Only
1
Specifications
2
About Your Thermostat
3
Installation
4
System Testing
5
Setting User Options
6
Operating Your Thermostat
7
Thermostat Maintenance
®
Warning
Turn off power to the heating equipment
before installation.
Attention
For installation by experienced service
technicians only.
Read all instructions before proceeding.
This thermostat is compatible with:
• Singlestageheatonlysystems
• 250–750millivoltheatonlysystems
• 2or3wirehydroniczonesystems
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
•1025NC–R,G,W1,V3,C
1
Specifications
1025NCW-100-03
Non-Programmable
Thermostat
Model number is located on back
of thermostat
Detailed
User Guide