Diamond Power Products DPS6500 manual Page4, Step Four, Plumb the APU to the Main Engine

DP

PLUMB THE APU TO THE MAIN ENGINE

Note: This APU Systems comes with a built in radiator. The connection below is optional.

Plumbing Procedure

Step Four

1.Remove the truck radiator cap to free pressure from coolant system. Do not open when hot.

2.Deplete the truck coolant system (if necessary).

3.The APU is shipped with extensive life anti-freeze. Ensure this is compatible with truck coolant.

4.Ensure that the coolant will flow in the right direction (same direction whether the Diamond or main engine is running). The Diamond flow indicator can be used to verify the flow.

5.Replenish the engine coolant in the system according to the specific engine manufacturer’s recommendations (additional coolant will be required).

Plumbing Considerations

•Silicon hose is satisfactory to use as coolant hose, but requires the use of silicon hose clamps.

•Ensure radiator coolant can always flow between truck engine and APU.

3/4” Fitting Return From APU			1/2” Or Larger
		No Sharp Bends	NPT Fittings
				Choose Ports That Are Far
		High Pressure		Apart For Max Crossflow
		Port
	3/4” ID Hose
	Loom All
	Hoses

	3/4” Fitting			Low Pressure
				Port (Suction)
	Supply To APU
Back View Of APU		Truck Engine	Install ShutOff Valves
				Use A Flow Indicator To Comfirm
				Flow Direction And Speed

WARNING: To avoid serious injury, permit the engine to cool before opening the radiator cap.

CAUTION: Plumbing through the dash or sleeper heater will null and void your warranty.

CAUTION: Take care not to spill coolant.

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