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Hot Water Boiler Dropping

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sflier View Drop Down
Commander
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Joined: 18 October 2013
Location: Newport, RI
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sflier Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2020 at 18:17
Like others, I ran a hose from the pressure value to the engine bilge so it would be easier to monitor and mop up.  We also turn the water pump off when running the engine and relieve some pressure from the system via the sink water tap. 
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2020 at 12:44
I fitted one of the standard non-return valves from the chandlers into the cold water system and it leaked at an enormous rate.  I think that they are designed just for maintaining the fluid in the suction pipework of a pump or to prevent back-flow in a discharge pipe and not for use in a pressurised water system. 

Isotemp stress that the calorifiers must be mounted horizontally and not vertically and so I wondering where that means there will actually be an air-space at the top of the tank which could absorb some of the expansion.  

  
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout & shallow keel, normally based in Scotland
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sflier View Drop Down
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Joined: 18 October 2013
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sflier Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2020 at 15:34
Originally posted by Martin&Rene Martin&Rene wrote:

Isotemp stress that the calorifiers must be mounted horizontally and not vertically and so I wondering where that means there will actually be an air-space at the top of the tank which could absorb some of the expansion.  

  

I believe they want it mounted horizontally to provide a means of draining the tank.


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