
SAS900MTK-0
A0
2
Low Battery Indicator.
Display temperature calibration.
IMPORTANT SAFETY INFORMATION: ---------------------------------------------------------------------------------------
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.
Read all of the information in this manual before installing this thermostat.
Use a professional contractor to install this thermostat.
This is a 24VAC low-voltage thermostat. DO NOT INSTALL ON VOLTAGES HIGHER THAN
30 VAC.
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 switch the system to cool if the temperature is below 50ºF (10ºC). This can damage
the air conditioning system.
This thermostat will not control your heating/air conditioning system without power. Two “AAA”
alkaline batteries are only used to provide continuous time and temperature display
during power loss. Installed batteries will allow programming prior to installation.
Replace batteries when the battery icon indicates the low battery message.
Change the air filter when the Filter Change Icon begins blinking.
Use this thermostat only as described in this manual.