Condensing Gas Furnace Wiring Diagram. In this hvac installation training video i show how to wire the low voltage thermostat wires into a furnace and ac unit. The model mav 4 way multipoise gas fired category iv direct vent condensing furnace is available in model sizes ranging in input capacities of 40 to btuh.
Condensing gas furnace category iv ama efficiency rating certified warning if this furnace is installed in an enclosed. Condensing gas furnace 43 pages summary of contents for heil f8mvl. If this product is not permanently and positively grounded numerous service calls may result.
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Consumer materials consumer mat. 19 this furnace contains electronic components which require a definite ground. This furnace must be installed in accordance with these instructions all applicable local building codes and the current revision of the national fuel gas code nfpa54ansi z2231 or the natural gas and propane installation code cancga b1491. Atuomoblie space heater water heater etc insure that the enclosed area is properly ventilated.