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SN12I HEAT PUMP NON-PROGRAMMABLE THERMOSTAT
Installation and Operation Manual
SPECIFICATIONS
Power Supply:
20VAC-30VAC 50-60HZ
Terminal Load:
1.0A per terminal, 3.0A maximum total load
Setpoint Temp. Range: 45ºF to 90ºF (7ºC to 32ºC)
Accuracy:
+/- 1ºF or +/- 0.5ºC
Dimensions:
6.0” W X 4.7” H X 1.1” D
Color:
White
FEATURES
• Large LCD display with backlight, continuous backlight option
• Independent heat and cool setpoints
• Simultaneous display of room temperature, setpoint, and current time
• Fan switch with ON and AUTO functions
• Permanent user setting retention during power loss - no batteries are required*
• Operates on 24VAC
• Air filter service indicator
• Low battery indicator
• Temperature calibration
• Configurable compressor short cycling protection
• Compatible with 2 heat/1 cool heat pump systems with emergency heat
*
Two “AA” batteries required to maintain clock function.
IMPORTANT SAFETY INFORMATION
• Use a professional contractor to install this thermostat.
• Read all of the information in this manual before installing this thermostat.
•
WARNING! Electrical Shock Hazard.
Always turn off power at the main power source by
removing the fuse or switching the circuit breaker to the
“OFF” position before installing,
removing, cleaning, or servicing this thermostat.
•
WARNING! Do not install on voltages higher than 30 VAC.
This is a 24VAC
low-voltage thermostat.
• All wiring must conform to local and national building and electrical codes and ordinances.
• Do not short (jumper) across terminals on the gas valve or at the system control to test
installation. This will damage the thermostat and void the warranty.
• Do not run the system in cooling if the outside temperature is below 50ºF (10ºC). This may
damage the air conditioning system.
• Replace batteries when the low battery icon flashes.
• Clean or replace the air filter when “SERVICE FILTER” begins flashing.
• Use this thermostat only as described in this manual.
