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Old 11-20-2018, 05:24 PM   #1
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Low Point Drains

Have a 2002 Dutch Star, when I open both "low point drains" does it drain all the wet systems on the coach? I have drained both holding tanks, fresh water tank, opened all faucets. Antifreezed holding tanks, stool and drains, but still a little squeamish.
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Old 11-20-2018, 05:37 PM   #2
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Read thru the MANY posts on winterizing
No pink in FW tank necessary or desirable
Did you blow out?
Did you pump pink through FW piping?
Drain & bypass water heater
Washer dryer? Supply & drain pump?
Fridge ice maker? Water? If so equipped
Does it have an inlet water filter?
Toilet & rinse hose?
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Old 11-20-2018, 05:39 PM   #3
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you are right to be squemish. three things i did not see in your post.

drain water heater
pump antifreeze until it comes out of each faucet
pour some antifreeze into each drain to fill the trap
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Old 11-20-2018, 05:59 PM   #4
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you are right to be squemish. three things i did not see in your post.

drain water heater
pump antifreeze until it comes out of each faucet
pour some antifreeze into each drain to fill the trap
I agree. And I think you have to be careful with the water heater valves. If you open both low point drains with the water heater bypass valves in their normal positions -- I "think" the water heater drains along with everything else.

But if you flip the water heater bypass valves before opening the low-point drains, I suspect that will trap water inside the water heater.

So the order there is important. If this were my coach and it was in an area where I knew it would get very cold, I'd open the water heater's drain plug (the anode rod) just to make absolutely sure the water heater was empty.

And of course, that's a good time to inspect the anode rod to see if it needs replacing.
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Old 11-20-2018, 07:55 PM   #5
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I have found that the WH will drain with the low point valve as long as the WH pressure relief valve is open. Otherwise, no.
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Old 11-20-2018, 08:06 PM   #6
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Originally Posted by OldDuke View Post
Have a 2002 Dutch Star, when I open both "low point drains" does it drain all the wet systems on the coach?

No


I tried blowing out once, had to repair in spring. I use the pink stuff and have had no more problems. I use 5-6 gallons of the pink
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Old 11-20-2018, 08:25 PM   #7
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I use the pink stuff and have had no more problems. I use 5-6 gallons of the pink
5 - 6 gallons? OMG that's a lot! Our 24 ft. Chinook takes about 3/4 gallon and our 31 ft. 5th Wheel Trailer takes a little over 1 gallon. I haven't pumped RV Antifreeze into our 37 ft. KSDP yet, but I'm guessing it won't need any more than 1.5 - 1.75 gal.
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Old 11-21-2018, 07:31 AM   #8
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Hi OldDuke,
The low point drains are just that, the low point. There could be some points in the lines that do not drain. Best to blow them out if you expect a hard freeze. For me, I would set the furnace at its' lowest setting, make sure the basement blower is on (if equipped) and I put a remote thermometer in the wet bay.
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Old 11-21-2018, 07:34 AM   #9
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Originally Posted by OldDuke View Post
Have a 2002 Dutch Star, when I open both "low point drains" does it drain all the wet systems on the coach? I have drained both holding tanks, fresh water tank, opened all faucets. Antifreezed holding tanks, stool and drains, but still a little squeamish.
No. They only drain the piping system.
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Old 11-21-2018, 08:07 AM   #10
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Originally Posted by WoodyS View Post
5 - 6 gallons? OMG that's a lot! Our 24 ft. Chinook takes about 3/4 gallon and our 31 ft. 5th Wheel Trailer takes a little over 1 gallon. I haven't pumped RV Antifreeze into our 37 ft. KSDP yet, but I'm guessing it won't need any more than 1.5 - 1.75 gal.
5 gal is about right based on my experience. The largest antifreeze hog is the washer/dryer.
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Old 11-21-2018, 09:09 AM   #11
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i use a bit over 4 gallons. but i would not say i am economical. i want to be sure. the lines to the washer (which we don't have) are long! and if some excess gets pumped and flows down a drain into a waste tank i don't worry about it. i pay about $3.00/gal so excess antifreeze that gets used is very cheap insurance.
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Old 11-21-2018, 09:43 AM   #12
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Drains

We have a 02 Kountry Star and it has 3 drains on it, don't know if it is the same as yours. There is 1 in a hole that you have to reach in and open to drain. Good Luck !
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Old 11-21-2018, 10:46 AM   #13
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I'm 6 gallons, my hog is W/D and rear Tecma toilet. Also have the Oasis but that doesn't take much to flush out. Walmart has best price at $2.98 / gal case comes with 6 gallons
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Old 11-23-2018, 04:11 AM   #14
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Winterizing your coach is covered in this link.
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