Warning
Turn off power to the heating or cooling
equipment before installation.
Attention
For installation by experienced service
technicians only. Follow applicable codes.
This thermostat is compatible with:
• Single stage heat / cool conventional and heat pump systems
• Conventional systems up to 2 heat / 1 cool (TT-N-421 only)
• Single compressor heat pump systems with an auxiliary heat stage (TT-N-421 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
• TT-N-411: Rc, Rh, O, B, Y, W, G, C
• TT-N-421: R, O, B, Y1, E/W1, G, W2, C
1
Specifications
TTN-100-02
1
Specifications
2
Installation
3
Setting User Options
4
Operating Your Thermostat
5
Additional Operation Features
6
Thermostat Maintenance
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.
Read all instructions before proceeding.
Non-Programmable Thermostats
®
TT-N-411
Single Stage Heat / Cool
Conventional and Heat Pump
TT-N-421
Up to 2 Heat / 1 Cool
Conventional and Heat Pump
Model number is located on
thermostat sub-base.