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
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 |
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| 1/2” Or Larger | |||||||||||||
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| No Sharp Bends | NPT Fittings | |||||||||||||||
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| Choose Ports That Are Far | ||||||||||||
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| High Pressure |
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| Apart For Max Crossflow | |||||||||||
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| Port |
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| 3/4” ID Hose |
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| Loom All |
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| Hoses |
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| 3/4” Fitting |
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| Low Pressure |
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| Port (Suction) |
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| Supply To APU |
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Back View Of APU |
| Truck Engine | Install ShutOff Valves |
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| Use A Flow Indicator To Comfirm |
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| Flow Direction And Speed |
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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.