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Old 03-27-2017, 06:37 AM   #1
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What's the trick to even temp using tankless?

We have a 2016 Precept 31 UL. We have never been able to get consistent temperature from the shower--it will flow hot, then cold. What are we doing wrong?
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Old 03-27-2017, 07:06 AM   #2
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What brand / model of water heater? Does this only at the shower, other fausets are ok?
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Old 03-27-2017, 11:51 PM   #3
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Agenttaylor,

A) welcome to the growing list of precept owners. I recommend you join
The Jayco Precept Owners Group forum.

b). I assume you have the latest Girard tankless system in which you
Set the digital value on the bathroom control...

If so. When showering you only use the hot water valve.
You would use open the hot water valve to gauge the temperature
If too hot turn the digital setting down, if too cold up the setting.

Others have said to first run kitchen sink before showering.

I know on my V1 system, we would get hot/cold spikes.
To help, we : removed the water pressure reducer in the original
Head outlet. We replaced head with Oxygenics.
We use an adjustable pressure regulator on external water hookup
To get at least 55 psi.


That is a start. Again, sign onto the Jayco forum for lots of useful info.

Mike
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Old 03-28-2017, 07:24 AM   #4
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Just as posted above, only use hot water. It will drive you crazy to try and get the right temp mixing hot and cold. Also, when taking shower and you want it a bit warmer, turn down the water flow a little and it will get warmer.
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Old 03-28-2017, 07:34 AM   #5
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Replace it with a tried and true propane/electric water heater!
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Old 03-28-2017, 07:35 AM   #6
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Thanks. Will try these tips!
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Old 04-01-2017, 08:00 AM   #7
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Quote:
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Replace it with a tried and true propane/electric water heater!
I agree with this statement.
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Old 04-05-2017, 11:17 AM   #8
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Must have the correct water pressure 45-55. Use an adjustable wp regulator mot the cheap reducers . Try your fresh water tank to supply water. It will deliver correct pressure. The if that works correct pressure is the trick. If not there are other problems,
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Old 05-09-2017, 11:04 PM   #9
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After hours of messing with our tankless we finally are using ours with very little problems. It's all about correct water flow, and pressure. Be sure to use only the hot water side, and set your water temperature at the control knob on the wall. This is not a good system for kids to operate!!
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Old 05-14-2017, 07:25 AM   #10
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Surprised that Jayco isn't using Truma

Truma has solved the instant hot water issues and a drop in replacement.

https://www.truma.com/us/en/water-systems/aquago.php

Here is some info

http://www.irv2.com/blog/2016/01/ins...heater-review/
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Old 05-15-2017, 09:52 AM   #11
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Jayco to use Truma

On the 2018 Jayco Precept lineup (and assume for the Allante)
they will be using the Truma Aqua system!
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Old 05-19-2017, 09:55 AM   #12
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Quote:
Originally Posted by edatlanta View Post
I agree with this statement.
X3 Replace it with the tried and true tank type propane and electric.
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Old 05-25-2017, 12:08 PM   #13
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Set your temp about 108 and do not use cold water. You need a certain amount of water pressure to make the water heater turn on. Do not turn off the water to soap then rinse or you will get a cold shot. You will use more water but not get the cold shots
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Old 06-27-2017, 07:59 PM   #14
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Had the same problem. Each campground has different water pressure. Campground owner told me the pressure at his campground was low. Removed the reducer and haven't had a problem since. I make it a habit to ask the campgrounds if they know what there water pressure is. Good luck.
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