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Old 04-15-2016, 09:00 AM   #1
Join Date: Feb 2016
Posts: 85
Hydronic Heat Shut Down for Summer

2000 Magna hydronic heat system appears to have coolant circulating anytime the engine runs (which is great in cold weather!). But with the hot water heater located below the bedroom closet, there is a tremendous amount of heat coming out of that closet now that we are entering the air conditioning season up here in Minnesota. As long as the Hydronic Heat system master switch is off, the circulating pumps won't run but still there is hot engine coolant flowing through the system.

I have not looked at all the plumbing schematics yet, but do you know if there is a valve I can close to stop the engine coolant from circulating through the hydronic system during the summer months? It's adding a lot of heat to the interior of the coach.


2000 CC Magna #5734
Delano MN
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Old 04-15-2016, 06:53 PM   #2
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Join Date: Apr 2016
Posts: 65
We had a 2000 Intrigue, and had hot air coming out of the register at the passengers feet. Drove my DW nuts. When we got our 2001, had CC put a valve in the bay, and a hose that intersects the return at the hot water heater, so in effect cuts off the loop that goes up to the refer exchanger, then on to the passenger, then the plumbing bay. End of hot air. Don't know if the Magna has the same loop, but you should be able to see the routing in your schematics book. I just switch the valve depending on the season.

Tom and Linda
Original owners
2001 CC Intrigue 40' Suite of Dreams
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Old 04-18-2016, 12:29 PM   #3
Join Date: Feb 2016
Posts: 85
Yah I've reviewed the hydronic heat schematic and I don't see a valve. Very interesting. That wardrobe closet in the bedroom gets pretty warm after running the engine for a few hours.

2000 CC Magna #5734
Delano MN
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