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Old 02-20-2020, 02:10 AM   #1
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Water pressure regulator and tankless water heater.

Iím sure this topic has been covered, but I am having a difficult time finding it. What should the water pressure regulator be set at with a tankless water heater. I have a 2018 Vegas 24.1, and I thought I read somewhere that it should be set at about 60 psi, but I can not find the topic.
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Old 02-20-2020, 02:25 AM   #2
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55psi will not cause a problem.
60psi is better.
They'll work as low as 35psi, but you won't like it at all.
I don't know if they are any better at 65psi.
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Old 02-20-2020, 12:26 PM   #3
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How do you like it does it supply enough hot water for two adults would you buy one if you already had a six gallon
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Old 02-20-2020, 12:54 PM   #4
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I have the tankless hot water system in my 2018 Thor Siesta and love it. It will deliver hot water as long as you have propane. I set my water pressure to 55 and have no issues with it. I set my temp to 106 and run the hot water only in the shower. If it feels too hot I SLOWLY turn on cold to adjust it. If you turn on the cold too fast you will get a cold burst of shower water. Once you understand how the system works you will not want to go back to the old 6 gallon tanked water heater system.
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Old 02-20-2020, 06:38 PM   #5
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I have tried to lower temp, but it won't respond. It goes down to 106, but when water is on, temp keeps going up to 115.
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Old 02-20-2020, 06:43 PM   #6
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I've had that happen a couple of times when the water heater side of the coach was in blasting sunshine. Usually I just use the control to set to 104 for a nice shower temp. DW likes 106!
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Old 02-20-2020, 11:09 PM   #7
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Quote:
Originally Posted by Hugh.vines@att.net View Post
How do you like it does it supply enough hot water for two adults would you buy one if you already had a six gallon
Hugh,

We like our tankless water heater. Once you get used to how it works, no going back to a six gallon WH. Tankless gives you endless hot water. No need to wait for the six gallon water tank to heat up.

DBCassidy
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Old 02-21-2020, 01:10 AM   #8
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love our tankless also!!!
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Old 02-21-2020, 01:41 AM   #9
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I found with ours, using an adjustable pressure regulator set between 50 to 55 psi worked well for us. I set temp to 120, never had a problem mixing cold water in to regulate temp. They are a bit different to use than water from the traditional tank, but once used to it, we had no complaints.
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Old 02-21-2020, 03:35 PM   #10
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Works great water pressure set at 50psi no problems my shower temp 102 wife 111 rest of the time 124 laundry dish washing etc. We don't mix any cold in,we've had campground water pressure as low as 16psi we turned pump on and had no problems.
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Old 02-21-2020, 03:43 PM   #11
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We always run our pump. This causes consistent consistency in water pressure and the operation of our tankless water heater.
We fill the tank, disconnect from shore water, run the pump, Repeat.

We haven't Found a reason to put up with variable pressure or a leak on their faucet we feel bad about, potential hose splits, an added outside obstacle, and we won't waste their water on a long long shower any more than we would waste ours.
40 gallons of water lasts us many days.

We try to make things as easy on ourselves as possible without affecting anyone else's ease.
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Old 02-22-2020, 01:01 AM   #12
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When I had my Outlaw: I used a 50-55 psi regulator, and the tankless system worked great.
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Old 02-22-2020, 01:18 AM   #13
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I'm pretty sure most all of the tank-less water heaters work best between 50 to 55 psi. Once I got rid of the non-adjustable pre-set to 45psi, regulator, and went to the adjustable, virtually all our problems and complaints about the tank-less water heater resolved.
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