Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 05-25-2014, 08:57 PM   #1
Member
 
Join Date: May 2014
Location: Northern Illinois
Posts: 82
protecting my hot water heater on tank water

I know the hot water heater must have water in it before turning it on. When I am running on tank water and pump how do I make sure my hot water heater does not go dry and damage the element as I run out of water?
__________________

Eaglechief_13 is offline   Reply With Quote
Old 05-25-2014, 09:44 PM   #2
Senior Member
 
newbold1's Avatar
 
Join Date: Dec 2012
Location: Joelton, TN
Posts: 274
I don't know of any trick to it. Just have to be careful to watch your water tank level and shut the water heater off when low / out. Easy to forget. But as far as I know there is no safety to prevent you from running it out and burning it up if you leave it on.
__________________

__________________
Joelton, TN
2013 Ford F350 Lariat Crew Cab 4x4 6.7 Diesel 3.55 Long Bed
2013 Jayco White Hawk 30DSRE
newbold1 is offline   Reply With Quote
Old 05-26-2014, 06:55 AM   #3
Site Team
 
norty1's Avatar
 
Join Date: Jan 2011
Location: Charleston, SC
Posts: 12,060
protecting my hot water heater on tank water

The pump supplies cold water pressure. When you hear the pump running, the fresh water is gone. The hw tank however is still full.
No damage. Just turn it off until you get more fresh water input.
__________________
Moderator
2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS

Can't find what you're looking on JOF? Try:Jayco Owners Forum Custom Google Search
"It's easier to fool people than to convince them that they have been fooled." - Mark Twain
norty1 is offline   Reply With Quote
Old 05-26-2014, 06:56 AM   #4
Senior Member
 
us71na's Avatar
 
Join Date: Jun 2013
Location: McKean, PA
Posts: 428
The pump will lose suction and water will quit flowing out the tap before you can empty the tank.

We've found that our water heater will stay hot over night so we turn it on long enough to heat the water and then turn it off. If we need more hot water we turn it back on and in just a few minutes we have hot water again.
__________________
2011 Skylark 21FKV
us71na is offline   Reply With Quote
Old 05-26-2014, 08:29 AM   #5
Member
 
Join Date: May 2014
Location: Northern Illinois
Posts: 82
Quote:
Originally Posted by us71na View Post
The pump will lose suction and water will quit flowing out the tap before you can empty the tank.

We've found that our water heater will stay hot over night so we turn it on long enough to heat the water and then turn it off. If we need more hot water we turn it back on and in just a few minutes we have hot water again.
Thank you for that information. So the pump will not draw the water down below the element? Is emptying water past the element only possible when you manually drain, by using the plug?

That is a good point about turning it off overnight. How about adjusting the temperatur on the heater; I haven't figured out where or if the temp can be adjusted. It is too hot for kids.
Eaglechief_13 is offline   Reply With Quote
Old 05-26-2014, 09:15 AM   #6
Senior Member
 
newbold1's Avatar
 
Join Date: Dec 2012
Location: Joelton, TN
Posts: 274
I never knew that. Good to know if I am understanding correctly that the water heater would have some left over water in it when the fresh tank is empty. I always assumed running the hot water out would draw the water heater content too low and potentially damage it if left on.
__________________
Joelton, TN
2013 Ford F350 Lariat Crew Cab 4x4 6.7 Diesel 3.55 Long Bed
2013 Jayco White Hawk 30DSRE
newbold1 is offline   Reply With Quote
Old 05-26-2014, 09:24 AM   #7
Member
 
Join Date: May 2014
Location: Northern Illinois
Posts: 82
That is my thought also. I would like to know for sure that the elements are protected so that you only expose them when you manually drain the tank.

Regarding draining the hot water tank, do you drain it after each outing or only if you are not going to use it for a couple weeks?
Eaglechief_13 is offline   Reply With Quote
Old 05-26-2014, 09:40 AM   #8
Site Team
 
norty1's Avatar
 
Join Date: Jan 2011
Location: Charleston, SC
Posts: 12,060
If you have doubts, experiment.
Leave the element off, run the pump dry of onboard water. Then pull the water plug and watch 6 or 10 gallons drain out.
__________________
Moderator
2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS

Can't find what you're looking on JOF? Try:Jayco Owners Forum Custom Google Search
"It's easier to fool people than to convince them that they have been fooled." - Mark Twain
norty1 is offline   Reply With Quote
Old 05-26-2014, 09:49 AM   #9
Senior Member
 
vboyd's Avatar
 
Join Date: May 2014
Location: Calgary
Posts: 113
I may be wrong. But if you were to drain out your fresh water tank. Then if, for some reason you ran the hot water only out of the tap. Wouldn't this drain the hot water tank?
vboyd is offline   Reply With Quote
Old 05-26-2014, 09:59 AM   #10
Site Team
 
norty1's Avatar
 
Join Date: Jan 2011
Location: Charleston, SC
Posts: 12,060
Not without water pressure.

Turn the city water off at your house. Do you drain the water heater by turning a tap on? Same principle. The pressure is what delivers the hot water.
__________________

__________________
Moderator
2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS

Can't find what you're looking on JOF? Try:Jayco Owners Forum Custom Google Search
"It's easier to fool people than to convince them that they have been fooled." - Mark Twain
norty1 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 08:06 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.