White Rodgers 7904 manual

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Table of contents for the manual

  • Page 1

    To prevent electrical shock and/or equipment dam- age, disconnect electric power to system at main fuse or circuit breaker box until installation is complete. Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. Do not short out terminals on gas valve or primary control to test[...]

  • Page 2

    2 INST ALLA TION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected. 2. Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the [...]

  • Page 3

    3 RH Y 24 VAC 120 VAC Hot Neutral THERMOSTAT SYSTEM G W Figure 9. Typical wiring diagram for heat pump with cool active reversing valve TRANSFORMER Reversing Valve* RC O B JUMPER WIRE Compressor Contactor JUMPER WIRE * Reversing valve is energized when the system switch is in the COOL position Fan Relay RH Y 24 VAC 120 VAC Hot Neutral THERMOSTAT SY[...]

  • Page 4

    4 CHECK THERMOSTAT OPERATION If at any time during testing your system does not operate properly, contact a qualified serviceperson. Fan Operation If your system does not have a G terminal connection, skip to Heating System . 1. Turn on power to the system. 2. Move fan switch to ON position. The blower should begin to operate. 3. Move fan switch to[...]

  • Page 5

    5 WEEKDAY (5 DAY) WEEKEND (2 DAY) Start Time* Temperature Start Time* Temperature 1ST HEAT 2ND HEAT 3RD HEAT 4TH HEAT 1ST COOL 2ND COOL 3RD COOL 4TH COOL SAMPLE Heating/Cooling Schedule Plan Period 5:30 AM 8:00 AM 5:00 PM 10:30 PM 6:30 AM 2:00 PM 5:00 PM 10:30 PM 7:00 AM 11:00 AM 6:00 PM 11:30 PM 7:00 AM 12:30 PM 6:00 PM 11:30 PM 68 ° F 70 ° F 70[...]

  • Page 6

    temperatures for consecutive time periods. You can choose start times, heating temperatures, and cooling temperatures independently for both weekday and weekend programs (for example, you may select 5:00 AM and 70 ° as the weekday 1st period heating start time and temperature, and also choose 7:00 AM and 76 ° as the weekday 1st period cooling sta[...]