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Auxiliary Cabin Heater / 525 EFI

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Old 04-13-2024 | 01:51 PM
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Default Auxiliary Cabin Heater / 525 EFI

I am installing a cabin heater in my boat and need to plumb the two 5/8” hoses to the Cooling system on the motor. On a 496 which uses almost an identical crossover as the 525 there are two ports on the starboard side of the crossover that those hoses plumb into. On the 525 there is only one Port. From pictures that I have seen on other motors with Aux Heaters it appears that one of the hoses hooks up there, but not sure where the other hose hooks up to. A water heater hooks up the same way as a cabin heater does so if somebody has a water heater maybe they can look where those two hoses attached to?

In the picture, you can see where one of the hoses hooks up to the end of the heat exchanger and in the bottom right where the two hoses come in from a water heater in this boat. Thx

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Old 04-13-2024 | 04:22 PM
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And how do you warm the cabin exactly?
how would a system like that work?
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Old 04-13-2024 | 09:58 PM
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Originally Posted by jeff32
And how do you warm the cabin exactly?
how would a system like that work?
Just like the heater in your car.
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Old 04-13-2024 | 10:59 PM
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Originally Posted by jeff32
And how do you warm the cabin exactly?
how would a system like that work?
Hot engine coolant is plumbed into the cabin, feeding a heater core. Fan forces air through the heater core, heating the cabin.
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