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Install guide 8099 8099 Features The GPMG8099 can be used with most 24 volt gas, oil or electric heating and air conditioning systems, or gas millivolt heating systems. It cannot be used with 120 volt heating systems or heat pump systems. Ask The Home Depot for other thermostats to control those systems.
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Install guide 8099 To avoid electrical shock and to prevent damage to the furnace, air conditioner, Caution and thermostat, disconnect the power supply before beginning work. This can be done at the circuit breaker, or at the appliance. You will need #1 Phillips screwdriver (small) and Tools Drill with 3/16-in.
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Hold the base against the wall, with the wires coming through the opening below the terminal block. Position the base for best appearance The 8099 can be mounted vertically or horizontally. chose the position that best suites your wall. Attach the base to the wall with the two screws provided.
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G - FAN RELAY C - Common side of Heating Power Y - COMPRESSOR O - If you have this wire the 8099 will not control your system. B - If you have this wire the 8099 will Go To Page 15 Go To Page 14 not control your system.
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Re-attach the the body onto the base by pressing it firmly onto the base. 6 Install Batteries The 8099 requires 2AA batteries if the C-wire is not available in your furnace installation. Switch MODE switch to OFF and the FAN switch to AUTO.
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OPERATING Guide to initialize the new thermostat. 8 Power Options 1) The 8099 can run on batteries only. (2AA Alkaline) 24VAC and MV The batteries will last well over 1 year. If the batteries are not replaced the thermostat will stop working.
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a c e F ro m F u rn 2 WIRE Heating STEP 1 - Connect the R (or RH) wire to (GAS MILLIVOLT or 24vac the RH terminal on the thermostat. This connects the Heater Power to the Thermostat thermostat.
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a c e F ro m F u rn STEP 1 - Connect the Y wire to the 4 WIRE a n d A C u n Y terminal on the thermostat. This Thermostat connects to the Cooler compressor. STEP 2 - Connect the RH or R wire to the RH terminal on the thermostat.
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