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Old 11-14-2020, 10:32 PM   #1
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Brand: Thor Motor Coach
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THOR #21233
Winterizing with antifreeze

I have a 2019 Vegas 24.1. I see reference to an antifreeze injection point near the fresh water tank under bed. I donít see one like it shows in pics. Canít you you just hook tube to city water connection and use coach water pump?

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Old 11-14-2020, 10:56 PM   #2
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I have a 2019 Vegas 24.1. I see reference to an antifreeze injection point near the fresh water tank under bed. I donít see one like it shows in pics. Canít you you just hook tube to city water connection and use coach water pump?
The coach WP is used. the t fitting goes between the pump and the FW tank. A valve goes in-between. One way it picks up water from the FW tank. The other wat it picks up Antifreeze from a 1 gal jug. It takes 2 gal to winterize the average RV. including the p-traps but they get Antifreeze while you are installing the antifreeze with the faucets open;
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Old 11-15-2020, 12:58 AM   #3
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Most modern RVs - and I think maybe all Thorís - already have the necessary valve and pickup line for the antifreeze jug. Look for a clear plastic hose maybe two feet long with a cap or plug in one end and a valve at the other. Probably will be near the base of the fresh water tank but could be near the pump. Certainly it will be easily accessible and along the line from the fresh water tank to the pump. If it really isnít present you can buy a Camco kit to add it yourself for about $15. It makes the job really easy.
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Old 11-15-2020, 01:45 AM   #4
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THOR #1150
Post a picture of the area under your passenger side bed. We'll point out things.
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Old 11-16-2020, 01:05 PM   #5
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Do all Thor water heaters have a by-pass or is the water heater somehow not included in the antifreeze protection? If anyone can post a step-by-step procedure for winterizing the water system, it would be helpful.
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Old 11-16-2020, 01:13 PM   #6
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Originally Posted by Mike J View Post
I have a 2019 Vegas 24.1. I see reference to an antifreeze injection point near the fresh water tank under bed. I donít see one like it shows in pics. Canít you you just hook tube to city water connection and use coach water pump?
no. you put the 2' hose in the antifreeze jug and turn the valve to the jug.
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Old 11-16-2020, 01:18 PM   #7
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Originally Posted by Metalman View Post
Do all Thor water heaters have a by-pass or is the water heater somehow not included in the antifreeze protection? If anyone can post a step-by-step procedure for winterizing the water system, it would be helpful.
ALL WH have bypass protection. 1, 2 or 3 valves.Click image for larger version

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Click image for larger version

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Old 11-16-2020, 01:23 PM   #8
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Thanks for the info. and the images. I will save them for future use.
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Old 11-16-2020, 02:15 PM   #9
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Some folks do suck the anti freeze in via the city water connection per the question

If you already have the T and valve on the pump suction that is the simplest way

My Tuscany doesn't due to space between the tank and pump so I suck it through the city water inlet and by pass the filter
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