My HWS doesn't get hot enough?
Q:
I have a gas/electric unit in my caravan and I have noticed that
the water does not get very hot on either gas or 240v. I suspect
that the previous owner may have ran the system on gas with the
AC switch on. I have replaced the anode and flushed the tank out.
I have also tried pushing the reset buttons after the unit has
cooled down. However the temperature of the water is still not
very hot on either gas or electric. Could you suggest a solution
to my problem ? Chris
A:
Hello, Possibly underneath the van there is a tempering valve.
Both hot and cold run into this valve. Have a play with it and
see if it makes a difference. It is not uncommon that some people
turn this down below the specified 55 degrees. Regards, Mike (Caravans
Plus Technical)
Reply:
Hi Mike, I tried that over the weekend and it seems to have fixed
the problem.
Thanks for your help, Regards Chris
Q:
Hi, I have a instant gas HWS and the temperature either does not
get hot enough, or the water flow is so low that its useless for
the shower. How can I fix this? Peter
A:
Hi Peter, You didn't indicate the size or brand of your
HWS but instant gas HWS's do have limitations. I guess you have
checked your gas jet is not partially blocked. If all seems well
on the gas flame side (yellow flames indicate a problem), you
may need to go to a larger instant HWS or go to a storage HWS
system. The reason instant HWS systems can struggle in certain
areas is due to the incoming water temperature.
If you are in a cold climate, either your tank water or the incoming
mains water will be a low temperature. The instant gas HWS has
a limit on the amount it can raise the temperature during the
time it flows through the HWS. You can slow down the water flow
to get it very hot but this will cause problems when used for
a shower.
A further complication of slow flow if you are pumping your water
is that most common pumps used in RV's must switch off and on
during your shower. You can reduce this pulsation by installing
a pulsation dampener, but you can not eleminate it unless you
go to a variable speed pump.
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