|
|
05-10-2020, 06:03 PM
|
#1
|
Junior Member
Brand: Thor Motor Coach
Model: Quantum
State: Maryland
Posts: 5
THOR #16102
|
Tankless Hot Water while boondocking
We are living in our 2019 Thor Quantum 29KW with a tankless water heater. Turning on the hot water (without engaging water pump) delivers cold, then a brief hot water moment, then cold again. HELP...tired of heating up water in the microwave (we do have electrical hook up - 20 amp - 10 less then our 30 amp load max).
__________________
|
|
|
05-10-2020, 06:32 PM
|
#2
|
Senior Member
Brand: Thor Motor Coach
Model: 37LS outlaw
State: New Jersey
Posts: 516
THOR #5248
|
Sounds like a low pressure flow.
Are you hooked up to city water?
__________________
|
|
|
05-10-2020, 06:37 PM
|
#3
|
Junior Member
Brand: Thor Motor Coach
Model: Quantum
State: Maryland
Posts: 5
THOR #16102
|
Nope but I have a switch for the water pump and I have not switched that on.
__________________
|
|
|
05-10-2020, 07:10 PM
|
#4
|
I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
|
Try it with the water pump engaged.
__________________
|
|
|
05-10-2020, 07:18 PM
|
#5
|
Senior Member
Brand: Thor Motor Coach
Model: Compass 23 TB
State: Ontario
Posts: 362
THOR #13224
|
I am not sure how you are getting any water if you are not hooked up to city water and your pump is not on. Make sure your fresh water tank is full and then switch on the pump and let the pump run , turn on a tap (cold then hot) and make sure all the air is out of the line and see if the water stays hot but run the hot only. Shut off the water and if the pump stops its primed and you should be good to go, the tankless water heaters are sometimes hard to get used to how they work
Coveman2
2018 Thor Compass 23 TB
__________________
|
|
|
05-11-2020, 12:52 PM
|
#6
|
Member
Brand: Thor Motor Coach
Model: Thor outlaw 38MB
State: Florida
Posts: 70
THOR #18251
|
My limited experience with my tankless WH is that when the only pressure supply is the house water pump performance suffers and hot water “dribble” is sop.
The system needs pressure as close to 50psi as one can supply and at that point using only the hot water supply unmixed (no cold) and system is set at the desired temperature on the system control panel will performance come close to satisfactory. JMHO
__________________
Into the great wide open,under them sky’s of blue
Outlaw 38MB
|
|
|
05-11-2020, 01:15 PM
|
#7
|
Senior Member
Brand: Thor Motor Coach
Model: Miramar 37.1
State: California
Posts: 2,494
THOR #12698
|
The tankless hot water systems needs between 50-55 psi water pressure to work properly. When I hook up to city water, I use an adjustable water pressure valve set set to 55 psi and have the temp set to 106. I then turn on the hot water only. Works great at that point.
__________________
|
|
|
05-11-2020, 01:51 PM
|
#8
|
Senior Member
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 4,153
THOR #12751
|
Quote:
Originally Posted by V1VR
My limited experience with my tankless WH is that when the only pressure supply is the house water pump performance suffers and hot water “dribble” is sop.
The system needs pressure as close to 50psi as one can supply and at that point using only the hot water supply unmixed (no cold) and system is set at the desired temperature on the system control panel will performance come close to satisfactory. JMHO
|
I don’t have that problem with my coach when I’m using the fresh water tank.
You may want to check your water pump, strainer and filter. The system should generate enough pressure for continuous hot water if you only use the hot water, set the temp you want and don’t mix cold.
I would also pull the strainers in every faucet and shower head. I have found construction debris in them on new coaches restricting water flow.
__________________
|
|
|
05-11-2020, 02:34 PM
|
#9
|
I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
|
Quote:
Originally Posted by Wolfstar
Nope but I have a switch for the water pump and I have not switched that on.
|
Has anybody else noticed this statement??
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
|
|
|
05-11-2020, 02:43 PM
|
#10
|
Senior Member
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 4,153
THOR #12751
|
Quote:
Originally Posted by Bob Denman
Has anybody else noticed this statement??
|
Yikes.... good catch Bob!!!!
__________________
|
|
|
05-11-2020, 02:56 PM
|
#11
|
I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
|
I don't know how I saw it and nobody else did: I'm the blindest guy in here...
Suffice it to say: the water pump needs to be running; if you expect to have water pressure, and a good flow of the wet stuff...
https://www.thorforums.com/forums/at...1&d=1589209280
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
|
|
|
05-11-2020, 03:30 PM
|
#12
|
Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
|
Quote:
Originally Posted by paulwadley
The tankless hot water systems needs between 50-55 psi water pressure to work properly. When I hook up to city water, I use an adjustable water pressure valve set set to 55 psi and have the temp set to 106. I then turn on the hot water only. Works great at that point.
|
The adjustable regulator will not increase low pressures they only reduce higher pressures to the set pressure. If the spigot only has 45psi you'll only have 45psi in the RV regardless what the regulator is set at.
Id think that if the RV is equipped with a water heater that needs 50-55 psi they would put in a pump that puts out that much, but it is a RV so ANYTHING is possible.
Also tankless water heaters doesn't mean instant hot water. RVs typically have long runs of small diameter uninsulated piping so it takes a bit for the hot water to reach a faucet.
__________________
Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
|
|
|
05-11-2020, 04:23 PM
|
#13
|
Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,767
THOR #1469
|
Seneca owners over on the Jayco forum have modified their rigs to install recirculation systems so the hot water in the lines is always hot and they are not wasting grey tank capacity trying to warm water for dishes or showers. Their systems periodically recirculates through the water water heater and dumping the cold/cooler water back into the fresh water tank.
__________________
Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
|
|
|
05-11-2020, 04:36 PM
|
#14
|
I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
|
That's what my Truma system does...
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
|
|
|
05-11-2020, 09:56 PM
|
#15
|
Junior Member
Brand: Thor Motor Coach
Model: Quantum
State: Maryland
Posts: 5
THOR #16102
|
Fixed!!!!
Thanks to everyone who responded. Got her done and now enjoying hot water...helps to turn the system on at the bedroom control switch. Hooked up to the farm faucet for ongoing incoming water...with filter and pressure gauge.
Suffice it to say, you all are great resources that help walk us through the problem to solution. As a relatively new RVer (been on a total of 4 trips) still working out the kinks. You remain my saviors.
Wolfstar
__________________
|
|
|
05-11-2020, 10:34 PM
|
#16
|
I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
|
Glad to see that you got it sorted out.
__________________
|
|
|
05-11-2020, 10:34 PM
|
#17
|
Senior Member
Brand: Thor Motor Coach
Model: Compass 23 TB
State: Ontario
Posts: 362
THOR #13224
|
You are welcome and if you are not sure just ask , there are a lot of great people with lot of RV experience, to tell you where to go !!!!!!!!!!!!!!!!!
Just Kidding
Coveman2
__________________
|
|
|
05-12-2020, 05:51 AM
|
#18
|
Junior Member
Brand: Thor Motor Coach
Model: Quantum
State: Maryland
Posts: 5
THOR #16102
|
From the many posts I read with every Forum email, I believe you to be quite the scoundrel I very much enjoy scoundrels !
__________________
|
|
|
05-12-2020, 07:18 AM
|
#19
|
Senior Member
Brand: Thor Motor Coach
Model: 2019 Aria 4000
State: Utah
Posts: 336
THOR #15943
|
Congrats on the resolution! Our Aria's hot water ONLY works with the pump on regardless of city or tank water. Once we figured that out, along with how best to regulate the temp, we've had hot water whenever needed.
GVP
__________________
|
|
|
05-12-2020, 02:06 PM
|
#20
|
Senior Member
Brand: Thor Motor Coach
Model: ARIA 3901
State: New Jersey
Posts: 170
THOR #5141
|
Quote:
Originally Posted by GVP-The Boxcar Children
Congrats on the resolution! Our Aria's hot water ONLY works with the pump on regardless of city or tank water. Once we figured that out, along with how best to regulate the temp, we've had hot water whenever needed.
GVP
|
Funny how quirky these things can be! On my Aria the hot water works fine on city water with no pump or tank water with pump. These things can make you scratch your head sometimes.
__________________
2019 Aria 3901--2019 Jeep Wrangler
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|