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The Norfolk Broads Forum / Broads Boat Owners Q & A / No hot water
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Posted By Discussion Topic: No hot water

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huggy
Oct-09-2017 @ 7:11 AM                           Permalink
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Water is not getting hot from the calorifier even after a run of several hours. Historically, she would warm up water in 15 minutes, but now it remains stone cold. It's a Perkins 4.108 on a broom skipper.
I have recently fitted an accumulator , and also rebuilt my Jabsco raw water pump. Can't see why this might have an effect, but looking for suggestions as to what might be the cause.  An air lock methinks?

....huggy

Regulo
Oct-09-2017 @ 8:27 AM                           Permalink
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Air lock seems likely. Do your pipe runs rise and fall anywhere? That's always a likely source of air locks on re-filling. Try releasing the upper hose fitting on the calorifier, see if there's air there.

Regards, Ray.

Whatever happens now, I'm blaming it on Brexit. Everyone else is!


This message was edited by Regulo on Oct-9-17 @ 9:28 AM

huggy
Oct-09-2017 @ 9:17 AM                           Permalink
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Sure, I will try this...when I've moved the cooker, one settee and half a kitchen base unit...why oh why are calorifier so so tucked away!
Still puzzled though as I haven't touched the heating circuitry....


....huggy

WherryNice!
Oct-09-2017 @ 9:46 AM                           Permalink
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This might sound daft but you haven't accidentally bypassed the calorifier or swapped hot n cold over or something similar during the recent works?
Seems odd to get an airlock if you havent done anything to the engine side of things....I'm a car technician btw

Rob

Boats Boats....I like Boats!

Regulo
Oct-09-2017 @ 10:02 AM                           Permalink
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By fitting an accumulator, depending where it's situated, air could certainly have entered the system. If nothing else has been done, that seems the most likely scenario.

Regards, Ray.

Whatever happens now, I'm blaming it on Brexit. Everyone else is!

annville
Oct-09-2017 @ 10:31 AM                           Permalink
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Hi Huggy Does the hose from the engine that goes to the calorifer get hot if not you have a blockage?or an air lock if no access to calorifer try mains water hose to flush the air blockage the same with the cold supply from the pump to the calorifer.Silly question you do have a lay out of pump then accumulator then tee'd off one pipe to cold tap one pipe to bottom of calorifer then hot return from top of calorifer to taps.It's also beneficial to have a non return valve inserted in supply pipe to  calorifer this can stop air locks or caring .John



This message was edited by annville on Oct-9-17 @ 11:37 AM

eddybear
Oct-09-2017 @ 5:22 PM                           Permalink
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I to have had an accumulator Fitted, and in the morning when I want to shave I have to run the hot tap until the accumulator is empty of cold water  probably just a few minutes and then the hot will come through from the main tank, The advantage with the accumulator is the pressure  in the hot water system is always constant, which means if somebody late at night wishes to wash their hands even though you have turned off The water it will still flow admittedly a bit cooler

All the best Ted.

huggy
Oct-14-2017 @ 4:17 PM                           Permalink
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Well thanks everyone.....just back from my boat and checked everything, no leaks etc. It is working fine!
As they say in Norfolk, "that's a rum'n"

....huggy


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