|
|
|
|
|||||
|
||||||
From: Peter Bennett (no email)
Date: Fri Aug 03 2007 - 20:20:09 EDT
You need a check valve before the cold water input to the water
heater, and an expansion tank somewhere after the check valve. It is
likely that there was a check valve at the cold water input on the old
tank.
Water (and any air in the water heater) will expand as it is heated.
Without the check valve, hot water will flow back into the cold water
system. Depending on the plumbing arrangement, a little may show up at
a cold water tap.
Without an expansion tank on the hot water side of the check valve,
the pressure developed as the water expands on heating may cause the
safety valve on the water heater to leak.
Friday, August 3, 2007, 3:23:56 PM, Jake2124 wrote:
Jac> OK, I am puzzled beyond being able to be reasonable. My 25 year old water
Jac> heater developed a small hole in the side. So, I had it removed and replaced it
Jac> with a same size Raretan Water heater. The old one is gone, but I think the
Jac> name was something like Torrid. Any way, until the old one leaked, it worked
Jac> perfectly on both electroc power and engine heat exchanger. Water heaters are not
Jac> complicated!!!!!!!! I unhooked the old heater. @ lines for the heat exchanger
Jac> and 2 for the cold water in and hot water out, plus the electricak wires.
Jac> Now, my water pressure pump runs for about a minute instead of 20 seconds, and I
Jac> get HOT water out of the cold water tap, some of the time. If I run a couple
Jac> of gallons of water, the cold tap will run cold. I called tech support and they
Jac> said I must install a second expansion tank and a vacuum break in the cold
Jac> water line. And that there is air trapped in the water heater that will take a
Jac> couple of weeks of everyday use to be eliminated. I turned the thermostat down
Jac> from 130 degrees to 120 degrees, and that seemed to stop the problem when on
Jac> shore power. When the engine is heating the water thru the heat exchanger, the
Jac> problem not only persists, but is worse. So, any advise from the group? My
Jac> advise is not to buy a Raretan water heater.
Jac> Brian
J
-- Peter Bennett, VE7CEI Vancouver, B.C., Canada Ennos 31 "Honeycomb" GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca _______________________________________________ http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering To unsubscribe send email to with the word UNSUBSCRIBE and nothing else in the subject or body of the message. Trawlers & Trawlering and T&T are trademarks of Water World Productions. Unauthorized use is prohibited.
|