Gas Furnace Wiring Color Code. This wire connects to your heat pump if applicable. Min low voltage-field installed-factory option-factory standard-field installed-factory option-factory standard line voltage original release no.
The orange thermostat wire links to your heat pump if you have one. W2 - This is the thermostat terminal used for second stage heat. There are gas furnaces with low fire and high fire and some depend on control from a two-stage heating thermostat with a W2 terminal.
GOODMAN GAS FURNACE IO MANUAL GMP GMPE PDF power vented multi-position 2001 Goodman Manufacturing Company LP 2550 North Loop West Suite 400 Houston Texas 77092 USA This manual includes helpful chimneyvent sizing tables giving vent diameter height rise and vent capacity.
Can require up to 8 conductors because of the amount of communication needed between the thermostat and air handler or furnace. The Lennox ML180 Gas Furnace has efficiency ratings of 80 AFUEcan save you hundreds of dollars each year compared to standard furnaces. Collection of furnace fan relay wiring diagram. I need to hang one more small hardwired load right near the furnace and would rather not run a new circuit.