W415-1007 / A / 07.18.12
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15.0 loW volTaGe WIRInG
The thermostat and control wiring should be a minimum of 18 AWg copper. Excessive lengths of wire may
result in enough voltage drop to impair the proper functioning of the furnace. For thermostat wires in excess of
25 feet, use 16 AWg; 50 feet, use 14 AWg.
15.1 TheRMosTaT loCaTIon
The thermostat should be located approximately 5 feet above the floor, on an inside wall where there is good natu-
ral air circulation, and where the thermostat will be exposed to average room temperatures. Avoid locations where
the thermostat will be exposed to cold drafts, heat from nearby lamps or appliances, exposure to sunlight, heat from
inside wall stacks, etc.