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1 Specifications ........................................................................................................................................... 2 Important Safety Information .................................................................................................................. 2 Package Contents/Tools Required ............................................................................................................. 3 General Description .................................................................................................................................. 3 To Remove Existing Thermostat ................................................................................................................4 To Install Thermostat ................................................................................................................................ 4 Replacing Wiring Labels ........................................................................................................................... 6 Operation ................................................................................................................................................. 7 A Quick Test.............................................................................................................................................. 8 Wiring Diagrams ...................................................................................................................................... 9 Troubleshooting ..................................................................................................................................... 10 caution!: This thermostat should be installed by trained technicians only. Adhere to all local and national codes. Disconnect all power to the system before installing, removing, or cleaning. Parts Diagram Parts Diagram Mode Switch Fan Switch Celsius/ Fahrenheit Jumper Reset Button Heat Pump/ Non-Heat Pump Jumper Gas/ElectricSwitch F–C NON–HP HP Cool HeatOff OnAuto Electric Gas Specifications Specifications Input: • Voltage: 18-30 VAC Output: • Maximum: 1 amp per terminal (3 amp total for all terminals) Temperature Ranges: • Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C) • Differential range: 1°F to 3°F (0.5°C to 1.5°C) Accuracy: ± 1°F (± 0.5°C) • System configurations: Single stage heat pump • Terminations: R, C, W, Y, B, O, G Room temperature • Note: This thermostat is designed for: Single stage electric setpoint heating, heating/cooling systems and heat pump Room temperature systems. It will retain your setpoint temperatures in memory for up to 30 minutes during a power outage. Temperature differential setting SETROOMDIFF Important Safety Information • Always turn off the thermostat before installing, removing, cleaning, or servicing; turn off the power at the main power source by unscrewing fuse or switching off circuit breaker • Do not switch to “Cool” if outside temperature is below 50°F (10°C), this could damage your A/C system and cause injury • Do not install on voltages higher than 30 VAC • All wiring must conform to local and national building and electrical codes and ordinances • While cleaning, do not get soap directly on thermostat switches or LCD readout; only use a damp cloth with a mild soap to wipe the outside of the thermostat cover Package Contents/Tools Required 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 ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat. To Remove Existing Thermostat To Remove Existing Thermostat 1. Turn off power to the heating and cooling system by removing the fuse or switching off the appropriate circuit breaker. 2. Remove cover of old thermostat. This should expose the wires. 3. Label the existing wires with the enclosed wire labels before removing wires. See table on Page 6 for old and new label identification. 4. After labeling wires, remove wires from wire terminals. 5. Remove existing ther...