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Old 09-23-2017, 10:58 PM   #1
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Only one low point drain?

My 03 Winnebago Minnie had 2 low point water drains, one hot and one cold. My 2016 Forester 2701ds only has a red capped tube accessed underneath at rear next to the blue fresh water tank drain. How does the low point hot waterline drain assuming the red line is cold?
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Old 09-23-2017, 11:03 PM   #2
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It's all one. When you put your hot water heater in bypass mode the hot and cold water lines are connected and the red line is the low point for both.
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Old 09-23-2017, 11:15 PM   #3
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It's all one. When you put your hot water heater in bypass mode the hot and cold water lines are connected and the red line is the low point for both.
I live in SoCal and we don't need to winterize,but for long periods of no RV use, I want to drain the lines. Is the water heater bypass behind a panel at the water heater? If so, I have a bunch of valves. Which one.
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Old 09-24-2017, 11:29 PM   #4
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Old 09-25-2017, 11:00 PM   #5
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Great! So then the hot water line will drain using the cold in line going to the water heater. Just turn the 3 valves and should all drain out the low point.
Thanks
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Old 09-25-2017, 11:05 PM   #6
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Yes the bypassed position. The hot and cold connecting to WH closed and the center valve open create all one plumbing system
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Old 09-26-2017, 04:14 AM   #7
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Great! So then the hot water line will drain using the cold in line going to the water heater. Just turn the 3 valves and should all drain out the low point.
Thanks
I have never trusted the low point drains.

My solution is to use compressed air at the city water inlet to blow the water from all the lines one outlet at a time. Takes two people, one to run the air and one to open the valves but it works perfectly.

To test it do the low point drain til nothing else drains out. Then use my method. You will be amazed at how much water is trapped above those low point drains
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Old 09-26-2017, 04:41 AM   #8
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X2 Blowing out lines with compressed air will clear trapped pockets of water in the lines. I dont use more than 40# and dont forget the outside shower
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Old 09-26-2017, 05:39 AM   #9
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X2 Blowing out lines with compressed air will clear trapped pockets of water in the lines. I dont use more than 40# and dont forget the outside shower
Forgot it ONCE. Had it crack and had to replace it. Not expensive or difficult, just a PITA because I forgot it. Won't make that goof again.

And you are correct, you do not need much pressure
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Old 09-26-2017, 06:11 AM   #10
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X2 Blowing out lines with compressed air will clear trapped pockets of water in the lines. I dont use more than 40# and dont forget the outside shower
Yes you still must blow out lines or pump antifreeze through lines. Water will sit in plumbing low spots and bends.
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Old 09-26-2017, 09:26 AM   #11
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We have a 2005 Forester 29 Class C. I haven't been able to locate the water heater bypass and don't want to just pull off panels willy-nilly. Anyone know where the bypass is on this old timer? Thanks,
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Old 09-26-2017, 10:07 AM   #12
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Yes you still must blow out lines or pump antifreeze through lines. Water will sit in plumbing low spots and bends.
And for me the air is free, the anti freeze costs money. I only use that in the 3 P Traps and on top of toilet seal. About a quart total is all that takes.
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Old 09-26-2017, 12:30 PM   #13
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We have a 2005 Forester 29 Class C. I haven't been able to locate the water heater bypass and don't want to just pull off panels willy-nilly. Anyone know where the bypass is on this old timer? Thanks,
I'd start looking for the outside access panel then for the inside trim panel at the bottom of the cabinets directly behind the outside panel
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Old 09-26-2017, 02:54 PM   #14
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We have a 2005 Forester 29 Class C. I haven't been able to locate the water heater bypass and don't want to just pull off panels willy-nilly. Anyone know where the bypass is on this old timer? Thanks,
The bypass system is usually located directly behind your water heater.

Find an access panel by looking at where the water heater is located and a panel that would allow you to look at the very back or side of it.
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Old 09-27-2017, 12:22 AM   #15
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The bypass system is usually located directly behind your water heater.



Find an access panel by looking at where the water heater is located and a panel that would allow you to look at the very back or side of it.


On our 3171 the water heater is near the kitchen sink. Had to pull the bottom drawer out completely to access the water lines and valves.
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