Friedrich RT4 - Manual (Page 5)

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Package Contents/Tools Required
Package includes: RT4 non-programmable thermostat on base, thermostat cover, wiring labels, screws and wall
anchors, Installation, Operation and Application Guide.
Tools required for installation: Drill with 3/16” bit, hammer, screwdriver.
General Description
• The RT4 thermostat is a hardwired, digital, mercury-free, non-programmable, electronic thermostat
• Compatible with single stage heating/cooling systems, and heat pump systems
• Separate setpoints for heating and cooling
• Freeze Protection Feature: Protects pipes from freezing! If the room temperature drops to 40°F, the thermostat
automatically turns on the heat; the thermostat must be in the Heat position
• Built-in Compressor Protection for Air Conditioners; to protect the A/C’s compressor, there is a 5-minute delay
between the system turning off and the A/C starting
• 30-minute power loss memory retention protection