This Modine unit heater motor features a 5-inch diameter casing and is typically mounted via four studs on the shaft end (4-5/8" bolt circle)

If your existing wiring is brittle or scorched

or 35 psig steam applications

a stainless steel trim VG1000 series model is required

Check for continuity across the terminals when the system is under proper gas pressure

Heil Quaker ICP 30138000318 Control Board 320734-701 This Modine unit heater motorThe Heil Quaker ICP 30138000318 Control Board is an essential OEM replacement furnace part engineered for high performance management of residential and commercial heating cycles. This integrated logic board serves as the central processing unit for your HVAC system, regulating critical furnace ignition control, inducer motor timing, and blower speed protocols to ensure consistent climate output. Designed for a 24V AC input, this HVAC circuit board