American Energy Systems MagnuM 7500 - Manual (Page 34)

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9 The circuit board is located on the left side of the unit. Remove the ¼” hex head screw and pull
circuit board towards you. Lift the circuit board out of the housing. Do not crimp or stretch the wires
leading from circuit board pigtail. (Unplug the power cord before working on unit)
9 Reinstall in reverse procedure.
It is a good idea to use the thermostat option to achieve uniform control over your heating needs. By
setting the unit on a number 3 setting (this is the normal setting but can be any setting from 2-high) for
high fire and letting the wall thermostat control it, the fire will drop down into a pilot fire after the home
reaches the desired temperature.
If you are gone and the home requires heat, the unit will automatically resume the high setting when the
thermostat calls for heat
Back of circuit board
Two (2) ¼” male spade
connectors, one for each
wire from wall thermostat