Optional Equipment - Heater Craft 100H Series Installation And Owner's Manual

Optional Equipment

H415 In-line Circulation Pump
1. Locate and mount the pump.
Note – Do not mount he pump into bilge, or any location where it may become submerged. The warranty for
the pump will be void if, upon disassembly, we determine that the pump has been submerged in water for
any length of time.
2. Cut the return water hose from the heater unit.
Note – The output hose is connected to the intake manifold or thermostat are (most V-8 gasoline engines).
The return is connected to the water pump or the large hose between the thermostat housing and the water
pump (most V-8 gasoline engines)
3. Attach the hoses to the corresponding ports on the pump.
Note – Fasten the hose clamps near the end of the hose to prevent the hose end from "mushrooming" and
to prevent coolant leakage.
4. Wire the pump to the switch or use 2-7061 Auxiliary Pump to heater relay switch harness to power the
pump and heater unit using standard four position switch. (The pump and switch should be protected with a
10-amp in-line fuse.) The pump wires should be routed with the factory wiring harness whenever possible.
Note – The wires should be routed away from moving parts, high heat sources such as engine exhaust
manifolds and sharp edges or objects.
H703 Fresh Air Duct Installation (700H/800H only)
Warning: Carbon Monoxide (CO) is emitted from the engines' exhaust. Do not run the engine without
proper ventilation. Do Not run the engine in a confined space or where back drafting may occur. Do not
install the air intake where it can draw in engine exhaust.
1. Apply silicone type sealant around the inside edge (lip) of the fresh air intake.
2. Attach the fresh air intake to the heater unit.
3. Locate and install an intake vent for the fresh air source. Securing the vent and hose with with a plastic
wire tie or hose clamp.
4. Route the vent hose to the heater unit.
Note – Route the vent hoses in a manner that will prevent damage from gear or people.
5. Cut the vent hose to length, attach with plastic wire tie or hose clamp, and secure in place.
Note – Vent hoses should be as short as possible for efficiency.
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