[PDF] E2 Electric Furnace - Gray Cooling Man Air Conditioning element rating labels and furnace wiring diagrams. Refer to unit wiring diagram section for wiring of sequencer for each model furnace. Control Transformer (Figure 3) All E2 furnaces are equipped with a 30 VA, 240/208 vac primary, 24 vac secondary transformer. The function of Where can I get the wiring diagram for a Intertherm Where can I get the wiring diagram for a Intertherm furnace for a electric mobile home? Contractor's Assistant: Did you check the furnace's filters? I had the sequincer burn out last sppring, now one parts burned out it is running even though it is turned off. the wiring had been burnt It did not want to start now it does nt want to stop.