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AuthorMessage
Ray
Ray

Posted: Sat Oct 03, 2015 11:12pm

Post Subject: Draining Central Heating

Hi Tony, Have you any advice to give on the best way to drain a narrowboat central heating system which comprises an MX40 and 3 radiators.. My problem is the lowest part of the system is at deck "floor" level so a bucket to collect water seems to be impractical. PS I enjoy reading your expert advice section of the magazine and have picked all manner of tips/ideas from it. Thanks, Ray Fairwood

Tony-B
Tony-B

Posted: Sun Oct 04, 2015 7:47am

Post Subject: Draining Central Heating

First of all have a close inspection and trace the pipes. Sometimes a pipe extends into the engine bay with a drain cock on the end. You could find a drain cock low down somewhere else in the system. A drain cock has a barbed fitting on it for a hose. I have two on my system so that with the aid of a drill pump the liquid in the system can be pumped into containers for proper disposal. Please note that antifreeze is classes as a hazardous substance and should only be disposed of at refuse sites with the facility to collect it. If you have neither on your boat then I fear it is a case of seeing if an oven roasting tin or maybe fairly shallow plastic containers will fit under a pipe union so you can loosen the union a slowly drain the system that way. If you are forced to do this I would advocate fitting a drain cock when the system is empty. You can often replace an elbow feeding the last radiator in the system with a T piece and fit the cock to one arm of the .

Tony-B
Tony-B

Posted: Sun Oct 04, 2015 7:48am

Post Subject: Draining Central Heating

Sorry - the word Tee missed from the end of the last sentence above.

Ray
Ray

Posted: Sun Oct 04, 2015 10:47pm

Post Subject: Draining Central Heating

Thank you Tony, you've come up trumps again! I hadn't thought of a pump drill, this just proves the value of our contribution to CB magazine.

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