Draining down hot water cylinder

Bigplumbs

Bigplumbs

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In my Sealine S24 I need to winterise and drain down the hot water cylinder. It has a drain off cock at the bottom and in the past I have drained this into the bilge and pumped out with my bilge pump which is manual and takes a while

Could I just attach a hose pipe to the drain down cock and use one of those in line drill powered pumps to pump the water overboard. Obviously open all the taps first

how do others do this drain down
 
Last edited:
Bigplumbs said:
In my Sealine S24 I need to winterise and drain down the hot water cylinder. It has a drain off cock at the bottom and in the past I have drained this into the bilge and pumped out with my bilge pump which is manual and takes a while

Could I just attach a hose pipe to the drain down cock and use one of those in line drill powered pumps to pump the water overboard. Obviously open all the taps first

how do others do this drain down
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Assuming you have drained the freshwater tank first, close all the taps, both hot and cold, put a hose on the calorifier drain off cock and lead the hose overboard. Open the drain off cock and switch on the freshwater pump which , assuming you have the usual diaphragm type pump, will pump enough air to pressurise the system to force the water in the calorifier overboard.

www.solocoastalsailing.co.uk
 
Plum said:
Assuming you have drained the freshwater tank first, close all the taps, both hot and cold, put a hose on the calorifier drain off cock and lead the hose overboard. Open the drain off cock and switch on the freshwater pump which , assuming you have the usual diaphragm type pump, will pump enough air to pressurise the system to force the water in the calorifier overboard.

www.solocoastalsailing.co.uk
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If that works I will be very pleased
 
Mr Googler said:
Best thing you’ll ever buy ?
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It worked very well indeed.

Bought the cheap water hover from B and Q for £30 and went to the Boat today. Opened the drain cock (after emptying the main tank) and found that the hoover end would sit nicely at the flow end of the drain cosk. Let it trickle out and the hover had it before the water even hit the fiberglass. Emptied the Hover 3 times and Job done.

Another great advantage was it was good to hover up some condensation and indeed crud in the engine bay.

Excellent thing to have
 
Bigplumbs said:
It worked very well indeed.

Bought the cheap water hover from B and Q for £30 and went to the Boat today. Opened the drain cock (after emptying the main tank) and found that the hoover end would sit nicely at the flow end of the drain cosk. Let it trickle out and the hover had it before the water even hit the fiberglass. Emptied the Hover 3 times and Job done.

Another great advantage was it was good to hover up some condensation and indeed crud in the engine bay.

Excellent thing to have
Click to expand...

Good for unblocking heads as well.
 
Bigplumbs said:
Well I don't buy into all this Nautical Twoddle. It is a toilet in my world everyone understands that.
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Oh you mean the bog, why didn't you say that....
Wet vacs are a wonderful thing indeed, for a uk winter there's no real need to fully drain a calorifier as long as there's some room for expansion in there, mine survived the beast from the east just outside norwich with the pump off and the taps left open and a bit of air pumped through via the pump, the water tank was still half full with the outlet valve turned off, I have a tee just after tank valve with another valve so I can shut the tank off and let it suck air in to the pump or drain tank through it depending on valve positions.
My deck shower is on a similar setup and is only on in summer but lets the water drop into the bilge when isolated, it was only fitted as I had a dog that struggled in heat (husky cross), a quick cold shower helped him no end.
 
snowbird30ds said:
Oh you mean the bog, why didn't you say that....
Wet vacs are a wonderful thing indeed, for a uk winter there's no real need to fully drain a calorifier as long as there's some room for expansion in there, mine survived the beast from the east just outside norwich with the pump off and the taps left open and a bit of air pumped through via the pump, the water tank was still half full with the outlet valve turned off, I have a tee just after tank valve with another valve so I can shut the tank off and let it suck air in to the pump or drain tank through it depending on valve positions.
My deck shower is on a similar setup and is only on in summer but lets the water drop into the bilge when isolated, it was only fitted as I had a dog that struggled in heat (husky cross), a quick cold shower helped him no end.
Click to expand...

A quick cold shower would help many on here no end :rolleyes:. Before you know it some old Parsnip will be calling ropes lines
 
Buy a wickes wet and dry vacuum and get the optional wet and dry filter , I’ve had about 6 wet and dry vacs over the years and this one is the best one I’ve had yet ,I’ve used it to suck up loads water and also used it attached to grinder being used on fiberglass and works brilliantly,
not to expensive and light weight ,
 
Hi. Just on that subject. If your s24 is a petrol engine and has the usual set up with the hot water tank being also heated by the engine, make sure you take the supply and return pipes off and blow through them to get rid of the water sitting in them and the coil inside the tank. Hope that helps, should it apply.
 
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