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Old 11-15-2023, 04:49 PM   #1
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Brand: Thor Motor Coach
Model: Resonate 29G
State: North Carolina
Posts: 5
THOR #2200
Thor Resonate 29D water heater bypass

Can anyone give me step by step instructions on winterizing my 29D? I cannot find the water heater bypass valves. I assume they are under the king bed, but there is no access door...

Once heater is bypassed, what do I do next? Pictures will help.

Thanks for any help, links etc. that you can give.
The Rut

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Old 11-23-2023, 05:10 AM   #2
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Brand: Thor Motor Coach
Model: ACE 29D
State: South Carolina
Posts: 8
THOR #30248
On my ACE 29D the water heater bypass is underneath the master bed.
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Old 11-23-2023, 05:52 AM   #3
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Brand: Thor Motor Coach
Model: ACE 29D
State: South Carolina
Posts: 8
THOR #30248
1) Drain fresh water tank.
2) Drain hot water heater. (1 1/16 plug on Suburban - Open top valve to let air in)
Put plug back in after drained.
3) Open all faucets and shower.
4) Open outdoor kitchen low point drain.(Behind drawer of Outdoor Kitchen)
5) Turn on faucet of outdoor shower (Low point drain)
6) After water lines have drained close low point drains and faucets.
7) Bypass water heater - under Master Bed.
8) Pour 3 gallons of antifreeze into fresh water tank. (I do this instead of connecting directly to water pump. I do not care about the water taste as I do not drink the water)
9) Turn on water pump and let pressurize lines. Make sure faucets are closed.
10) Open each faucet until antifreeze comes out.
11) Flush toilet until antifreeze comes out.
12) Pour 1 gallon of anifreeze into toilet and flush (may have to flush 2 or 3 times) to get antifreeze into black tank.
13) Make sure all drain traps have antifreeze in them.
14) Run outside kitchen macerator pump to flush drain to sink.
15) Run black tank macerator pump.
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Old 11-23-2023, 09:42 PM   #4
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Brand: Thor Motor Coach
Model: Resonate 29G
State: North Carolina
Posts: 5
THOR #2200
Thor. Resonate 29D water heater

Thanks!! Your reply is very helpful. It is a shame Thor does not make an access door to the water heater. I p!an to fix that soon.

The steps to winterize are great! Why can't Thor provide this...

Again, thanks!
-TheRut
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Old 11-23-2023, 10:14 PM   #5
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Brand: Thor Motor Coach
Model: ACE 29D
State: South Carolina
Posts: 8
THOR #30248
I just ordered this access port off of Amazon - It comes in three sizes - I ordered the 6 inch one.... https://www.amazon.com/dp/B0BV5SR732...ils&th=1&psc=1
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Old 12-12-2023, 02:54 AM   #6
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Brand: Thor Motor Coach
Model: ACE 29D
State: South Carolina
Posts: 8
THOR #30248
Added a gallon of antifreeze to outdoor kitchen drain (Macerator Pump)

I decided to add more antifreeze to the outdoor kitchen sink drain - I poured the entire gallon of antifreeze into the sink and then ran the macerator pump until it was empty -
I did this because the drain line goes vertical once it is inside the coach and under the bed in the bedroom. I was concerned about that vertical section freezing. I did have some antifreeze in there already but just wanted to play it safe.
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