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IMPORTANT SAFETY INFORMATION
WARNING:
Always turn off power at the main power source by unscrewing fuse or switching circuit
breaker to the off position before installing, removing, or cleaning this thermostat.
Read all of the information in this manual before programming this thermostat.
This is a 24V AC low-voltage thermostat. Do not install on voltages higher than 30V AC.
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.
This thermostat is equipped with automatic compressor protection to prevent potential
damage due to short cycling or extended power outages. The short cycle protection provides a
5-minute delay between heating or cooling cycles to prevent the compressor from being dam-
aged.
Do not switch system to cool if the temperature is below 50°F (10°C). This can damage the
cooling system and may cause personal injury.
Use this thermostat only as described in this manual.
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