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03-21-2023, 07:02 AM
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#61
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Rivet Master 
2016 16' Sport
Miami
, Florida
Join Date: Aug 2016
Posts: 1,644
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What is IRVPWC?
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03-21-2023, 07:32 AM
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#62
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Rivet Master 
2008 22' Safari
Spicewood (W of Austin)
, Texas
Join Date: Mar 2015
Posts: 3,021
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Quote:
Originally Posted by richard5933
It's not about the initial wait for warm water to reach the shower head. Many people use a shut-off on the hand-held shower head while soaping up to conserve water. When you reopen the shower head after these brief pauses with a conventional water heater you still have hot water coming out. On the instant hot units you'll have a period of cold water first until the heater kicks in again.
For us the instant-hot units won't work since we often use water at minimal water flow to conserve water, and our minimal water flow is below the flow rate required to kick on the burners of an instant-hot heater.
Seems like Airstream could have two options for things like this...one with all the modern conveniences like instant hot, all electric, etc. and then another aimed at those wanting to use their trailers more off-grid. Wouldn't be all that difficult to have both available.
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I believe the imagined difference between the two systems is slightly misleading.
Regardless of whether a “tank system” or a “ tankless” system is used…. hot water already in the lines to the shower-head will remain warm for a period of time between operations of the shower-head shut-off button. Opening the flow after a short period of soaping-up…. will result in instant warm water regardless of system.
Different brands/models of tankless heaters have different flow-rates which activate them. The one I have heats the water at quite low flows. But even if the particular brand/model installed in Jackson Center requires a higher flow to activate… a restrictor at the shower head suitably-sized might resolve that issue.
I have a tankless system in my hangar (plumbing out there is remote from the house system… so when I added plumbing out in the hangar I only installed cold water….adding a tankless heater directly at the wash-sink out there.)
The operation is similar to the house… when water is first requested …it is cold….and a few seconds later warm water arrives. In only seconds the temperature is at 117 degrees as requested. Shutting off the water flow will end the heating at the tankless unit. Turning the water on a few minutes later …the water is still quite warm…about 105 I’d guess…..just as it is in the house traditional system.
HOWEVER…in a moment a shot of SCALDing water arrives…due to the latent heat build-up which occurs in the tankless heater when the water stopped flowing thru the heated-pipes inside the unit. That water instantly registers on the digital readout of the tankless heater to be at 127+-degrees  You’d better not have your hands in the water-outlet at that moment or it’ll be painful.
This result is likely influenced by the close-proximity of the tankless heater to the sink-faucet…only about 36”. A tankless heater more than a few feet away would result in 127+ water mixing with the previously existing warm water exiting that tank during an intermittent-flow “navy shower”. I imagine the tankless system would do fine in such an example….. However at the beginning of a shower …there’d be a long line of cold water in those lines until the heated water first arrived…. No different from a traditional tank-heater.
When boondocking, we capture that water in a collapsible bucket (Amazon) to be used for flushing the toilet or other uses.
(In fact, one can leave such a bucket on the floor of the shower during a navy-shower….thereby collecting a Lot of the water coming off of you….suitable for flushing the toilet…Beneficial-Even….as it will help clean the black tank.)
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03-21-2023, 05:05 PM
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#63
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Rivet Master 
2019 27' Globetrotter
McHenry
, Illinois
Join Date: Apr 2018
Posts: 2,604
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It’s an Intelligent RV Water Pump Controller
Quote:
Originally Posted by Shiny16
What is IRVPWC?
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Shiney16, the device Life is a Highway is talking about is an intelligent RV water pump controller
It has a pressure sensor that attaches to the output side of the water pump and a controller that adjusts the voltage to the pump making it a variable speed pump vs. “on-off” with just the pressure regulator.
It allows you to run the water at a trickle without the pump banging and sputtering. Also, it has some safety features that you can enable like long run time where the controller will automatically turn the pump off.
Good stuff!
__________________
2019 27’ Globetrotter FBT Walnut/Dublin Slate
2018 FC23FB
2019 Ram 2500 6.4 Hemi Laramie Blue Ox 1000#
WBCCI# 10258
RETIRED!
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03-21-2023, 07:57 PM
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#64
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Rivet Master 
2016 16' Sport
Miami
, Florida
Join Date: Aug 2016
Posts: 1,644
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Thanks Jeff.
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03-22-2023, 10:10 AM
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#65
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Rivet Master 

2021 30' Flying Cloud
Airstream - Other
Airstream - Other
Lady Lake
, Florida
Join Date: Mar 2018
Posts: 1,342
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Irvwpc
Quote:
Originally Posted by Shiny16
What is IRVPWC?
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Sorry about that, I figure it would be searched out on the web. Thanks Jeff
Anyone can install this lots of resources and help for it.
https://www.irvwpc.com/
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03-22-2023, 10:19 AM
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#66
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Rivet Master 

2021 30' Flying Cloud
Airstream - Other
Airstream - Other
Lady Lake
, Florida
Join Date: Mar 2018
Posts: 1,342
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Good Advise
Good advise, I really like the three way shower valve work around where in the tub position the cold water is diverted via a pex pipe to the fresh water tank. Funny thing is JC is looking at Shower Mizer but absolutely refused to install the shower tub shower valve? Same thing really.
I cannot install one as with our 30 the shower was installed tight against the bedroom wall with no access panel and under warranty I'm not cutting one out yet. Hope-full JC service in Ohio this June will cut out one as its impossible to access the Moen plumbing.
Our shower experience improved enough with the IRVWPC we will use the collapsible bucket idea when conserving water.
Thanks
When boon docking, we capture that water in a collapsible bucket (Amazon) to be used for flushing the toilet or other uses.
(In fact, one can leave such a bucket on the floor of the shower during a navy-shower…thereby collecting a Lot of the water coming off of you…suitable for flushing the toilet…Beneficial-Even…as it will help clean the black tank.)[/QUOTE]
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05-04-2023, 10:47 PM
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#67
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Rivet Master 

2021 30' Flying Cloud
Airstream - Other
Airstream - Other
Lady Lake
, Florida
Join Date: Mar 2018
Posts: 1,342
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Finally fixed our Girard
Yesterday as schedued,
The Truma truck pulled into our storage unit. Two factory tech’s removed the OE Cold Shower Girard and installed the Truma. Problem is solved. Very clean install. The Truma control was placed in the same location in our bathroom. Then the test! My wife turned it on and there was warm water at the Kitchen faucet and then 120 degree HOT water.
Expensive but it was worth saving up for. Happy Wife, Happy Life. The installer said he has pallets of Girard new and used units. People are pulling them out and replacing with the Truma. Wish we had done this a year ago.
We would like to also thank Terry at IRVWPC for his help before we replaced the unit. He sells a great upgrade water pump module. The Truma tech's were interested with its quite operation good volume and pressure.
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05-05-2023, 08:49 AM
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#68
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"Cloudsplitter"

2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,136
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I guess the DW and I are outlaws…17 seasons in “Cloudsplitter” and I only needed 2 hands to count the showers, Sandra winning the count.
Now a rinse in the lake is a different story.
Bob
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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05-05-2023, 09:18 AM
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#69
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Rivet Master 
2017 28' Flying Cloud
2014 25' FB Flying Cloud
2008 25' Safari FB SE
Georgetown (winter)Thayne (summer)
, Texas & Wyoming
Join Date: Jan 2007
Posts: 7,450
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Again, one more reason many of us are happy with our older AS's with the propane/electric hot water heaters, refrigerators, cook tops, and ovens. "If it aint' broke, don't fix it"...or don't replace it. Call me old fashioned but give the customer a choice! Never had any issues with our hot water heater.
__________________
Empty Nesters; Gypsies on the road! 2017 28' Twin Flying Cloud
2017 F250 King Ranch, 4X4, 6.7L, Blue-Ox WDH
Summer-Star Valley Ranch RV Resort (Thayne, WY); Winter-Sun City (Georgetown,TX)
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05-05-2023, 10:44 AM
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#70
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4 Rivet Member 
2023 23' Flying Cloud
Another
, World
Join Date: Feb 2023
Posts: 328
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We are totally happy with the tankless water heater in the '23 Airstream Flying Cloud. We came from a NuCamp Tab400, which also had a tankless water system, and quickly learned that you get in, let the water run for about 20 seconds to get hot, and LEAVE IT ON. Immediately get under the water, wash your hair first, and scrub DOWN, top to bottom. As you are washing lower, the top is getting rinsed. Each shower is maybe 5 minutes, so my wife and I were able to each take our showers each night, do dishes, make coffee and ice, and give water to our dog for a two night trip on a single tank of fresh water. As far as descaling goes, our camper is still too new to ever require it. With that said, we use a water filtration system as well as a water softener when we fill the tank and when on full hookup, so it really should not be much of a problem, maybe every couple of years or so...maybe. It's not like we flow water through it 7 days a week 52 weeks a year.
All that said, we both love longer showers, and 15 to minute showers, while on full hookup, could not be done as well with the old 6 gallon water heaters, which is one of the reasons we went to NuCamp, and then Airstream (besides the fact that they are the best built campers that we have found.)
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05-06-2023, 12:11 AM
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#71
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Rivet Master 

2021 30' Flying Cloud
Airstream - Other
Airstream - Other
Lady Lake
, Florida
Join Date: Mar 2018
Posts: 1,342
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I agree
I totally agree.
Like you gypsydad we never! had any issues with our 2019 25 ft Airstream 6 gallon gas-electric. Ordered our new 30 ft 2021 trailer and were like OK it's tank less we'll be ok- NOT!
Yes if the towing weather was good your fresh water tanks or city water is preheated 75 + degree water, the pressure was on pump not city and of course a full hookup, Full hot on the shower at 114 F then the Girard sorta worked.
I hope Mr and Mrs 23 Airstream Girard Happy campers are honest and tell us how they Love it on a overnight Cracker Barrel or Harvest Host with no hookups with 40 degree tank water and cold fall weather. We found it was Sucks be to us ice cold long wait time never got over 99-101 degrees.
But heck Neanderthal Ray stands outside and showers with a ice cold bucket of water so each to his own. Trust us we do NOT throw away hard earned money on fixed incomes if something new works just fine. This Truma replacement is a huge improvement.
There will be several Happy Airstream Girard trolls to put us down don't care were the happy shower couple now can't take that away. This was for those like us frustrated with the Girard to learn from our experience. Those of you with the good ole 6 gallon tank maintained well. Your in a very good place! Were signing off of this Forum time for another to take the Girard banner and run.
Quote:
Originally Posted by gypsydad
Again, one more reason many of us are happy with our older AS's with the propane/electric hot water heaters, refrigerators, cook tops, and ovens. "If it aint' broke, don't fix it"...or don't replace it. Call me old fashioned but give the customer a choice! Never had any issues with our hot water heater.
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05-06-2023, 06:37 AM
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#72
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4 Rivet Member 
2023 23' International
2023 27' International
Nokomis
, Florida
Join Date: Aug 2022
Posts: 356
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We have learned to use our tankless water heater without issue.
1. Set the max water heater temperature at the control panel to your optimum showering temperature.
2. Turn on ONLY the hot water. FULLY on hot. NO mixing in ANY cold.
3. Do NOT use any sort of trickle shutoff. (the reduced flow / pressure will turn off the tankless heater flame.)
4. For a “Navy Shower”: at the point you want to temporarily stop the flow of water, turn the water completely off at the mixing valve. To resume, turn the water back on to fully hot.
As for any initial cold water: be it tank or tankless, there will always be an initial volume of unheated water between the water heater and the shower / sink.
Q: How many Airstreamers does it take to change a light bulb?
A: Ten. One to change the bulb and nine to discuss how great the old bulb was.
__________________
“No matter where you go, there you are.” — B. Banzai
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05-06-2023, 06:49 AM
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#73
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4 Rivet Member 
2023 23' Flying Cloud
Another
, World
Join Date: Feb 2023
Posts: 328
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Quote:
Originally Posted by SallyForth
We have learned to use our tankless water heater without issue.
1. Set the max water heater temperature at the control panel to your optimum showering temperature.
2. Turn on ONLY the hot water. FULLY on hot. NO mixing in ANY cold.
3. Do NOT use any sort of trickle shutoff. (the reduced flow / pressure will turn off the tankless heater flame.)
4. For a “Navy Shower”: at the point you want to temporarily stop the flow of water, turn the water completely off at the mixing valve. To resume, turn the water back on to fully hot.
As for any initial cold water: be it tank or tankless, there will always be an initial volume of unheated water between the water heater and the shower / sink.
Q: How many Airstreamers does it take to change a light bulb?
A: Ten. One to change the bulb and nine to discuss how great the old bulb was.
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Great, now you’re going to be criticized and called a troll for a.) figuring out how to use the system and b.) liking it.
Nice write up, by the way. It took us about a minute to remember our salesman said “don’t turn it off, set the hot temp on the shower temp you like, and turn the shower handle to full hot.” I’ve found my temp of choice to be 110, and my wife likes 104. Full hookup and boondocking with pump work the same.
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05-06-2023, 09:11 AM
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#74
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Rivet Master 
2017 28' Flying Cloud
2014 25' FB Flying Cloud
2008 25' Safari FB SE
Georgetown (winter)Thayne (summer)
, Texas & Wyoming
Join Date: Jan 2007
Posts: 7,450
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Quote:
Originally Posted by SallyForth
We have learned to use our tankless water heater without issue.
1. Set the max water heater temperature at the control panel to your optimum showering temperature.
2. Turn on ONLY the hot water. FULLY on hot. NO mixing in ANY cold.
3. Do NOT use any sort of trickle shutoff. (the reduced flow / pressure will turn off the tankless heater flame.)
4. For a “Navy Shower”: at the point you want to temporarily stop the flow of water, turn the water completely off at the mixing valve. To resume, turn the water back on to fully hot.
As for any initial cold water: be it tank or tankless, there will always be an initial volume of unheated water between the water heater and the shower / sink.
Q: How many Airstreamers does it take to change a light bulb?
A: Ten. One to change the bulb and nine to discuss how great the old bulb was.
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"Instructions"...to take a shower? Crazy! 4th AS in 15 years...never needed any "instructions" on how to use the shower; turn on the hot, adjust with the cold, just like at home. We always use the on/off button to control flow and conserve while soaping up. Think how many folks have complained about the new tankless water heaters here on the Forum the last few years...quite a lot for sure.
I will keep this thread, in case we somehow end up having to get a new Airstream with a Tankless system!
__________________
Empty Nesters; Gypsies on the road! 2017 28' Twin Flying Cloud
2017 F250 King Ranch, 4X4, 6.7L, Blue-Ox WDH
Summer-Star Valley Ranch RV Resort (Thayne, WY); Winter-Sun City (Georgetown,TX)
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