Help winterizing heater on EX343?

[HutchCanada]

First time winterizing myself. '10 SAN 210. Can someone clarify the process for the heater? Where is it located on the engine? I know I'm supposed to pull the inlet and outlet hoses and blow air thru. Should I run AF thru as well? Do I need to do anything else?



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[Quinner]

One heater hose should be coming off the intake manifold and the other off the water pump (not the impeller pump). The intake may be easiest to remove, pull it off, remove the plug at the J-Tube adjacent to the water pump, then using your lungs or an air compressor with low pressure, blow thru the heater hose until all the water runs thru and out the j-tube drain plug. Adding ant-freeze after a complete drain, not only in the heater but throughout the entire raw water system is a good idea IMO to ensure any residual water will not freeze.

[antgarcia]

Hi there, I have heard that you have to first shut off the valve then use the compressor and then pressurize the system and they check faucets. Last year my uncle hired professional Manhattan moving companies who provided him winterizing service. According to him their way of working was quality driven and he also gave them a good tip when the work was done.

[DaveNH]

Not sure what you mean about shutting off the valve, there usually isn't any valve in the heater circuit. More importantly, the last thing you want to do is pressurize the heater core, good way to ruin it. Just do what Quinner said, blow the water out until you only see drips coming out. I pour a bit of antifreeze into the intake hose and hold it up to let gravity feed it through, in seconds you'll see that same antifreeze coming out the drain and feel good that you've got all the water out. You can close the drain or reconnect the bottom hose and add more antifreeze if you are really concerned about filling the heater core with AF, not necessary but then again only a few cups so why not.

[Evening Shade]

antgarcia I'm not sure what you are talking about. We are talking about boats not houses.

[swatguy]

As mentioned you'll see two hoses , in most boats I've seen they're usually redish orange. All you have to do is pull them both off their barbed connections at the engine and blow air through to push the water out of the core.

for extra piece of mind I use a small funnel when I am done blowing it out and pour little antifreeze in there. And give couple shots of air to get that flowing thru.

[HutchCanada]

I do see two red hoses on the engine. For some reason I was thinking they were fuel lines?

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