I want to use my combi boiler (which is miles away from taps) just for central heating and fit a direct unvented cylinder next to my kitchen for hot water. Is this a good idea or not. I don't quiet see how indirect cylinders work. I am a good mechanic but have never fitted one to a combi. any sugestions. Thanks Lads
unvented cylinders
- Thread starter bigroy1
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yes its not a problem, you just need a competent G3 installer to do it for you
I am in a similar position.
Yes you can heat your hot water tank with your combi using the heating circuit.
You will need to install S plan or Y plan valves in the central heating circut that the combi boiler provides.
The combi boiler then needs to be on central heating continuously and
control the combi with an external programmer using the combis thermostat switching connectors to turn the boiler on for demand from
the heating thermostat or the unvented cylinder.
If your combi is a low voltage switch on the thermostat you will need to use a relay.
Another option is to use a small unvented electric cylinder under the sink it will only heat 10 litres of water but that is reheated within 10 minutes.
I wonder if it could be supplied with the mains hot feed and therefore reduce the electric heating bills. See the link below
http://www.plumbnation.co.uk/site/ariston-europrisma-under-sink-electric-unvented-water-heaters/
PS you need to be qualified to install an unvented cylinder over 50 litres.
Yes you can heat your hot water tank with your combi using the heating circuit.
You will need to install S plan or Y plan valves in the central heating circut that the combi boiler provides.
The combi boiler then needs to be on central heating continuously and
control the combi with an external programmer using the combis thermostat switching connectors to turn the boiler on for demand from
the heating thermostat or the unvented cylinder.
If your combi is a low voltage switch on the thermostat you will need to use a relay.
Another option is to use a small unvented electric cylinder under the sink it will only heat 10 litres of water but that is reheated within 10 minutes.
I wonder if it could be supplied with the mains hot feed and therefore reduce the electric heating bills. See the link below
http://www.plumbnation.co.uk/site/ariston-europrisma-under-sink-electric-unvented-water-heaters/
PS you need to be qualified to install an unvented cylinder over 50 litres.
That will be 15 litres or over u need a g3 ticketed plumber!
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If he wants to have an unvented cylinder for some reason, then the best is buy a "direct" model. Use the combi DHW circuit. Put a bronze pump on the return from the cylinder (fit a Surrey flange to the cold inlet) to the cold inlet of the combi (check if combi can have hot water on the inlet). Have the DHW outlet of the combi into the top of the cylinder via a Surrey flange. Have the cylinder stat switch in the pump. When the pump runs the combi's DHW starts up pumping 60C water into the cylinder. Use the combi's controls and plate heat exchanger. Do not buy indirect cylinders or Y plane valves. The equipment is already there ion the combi, apart from a pump and cylinder stat. This is a common way of heating cylinders on the Continent.
15 litres not 50. Good idea, you could also have an instant electric undersink heater fed from the combi. Much cheaper to run and better to do. Ellipticity is only used until hot water comes in from the combi.
He could also put in a secondary circulation loop on the combi.
Good grief - 'the remix'.
first things first, are you a time served plumber? if not you have no chance of getting into plumbing down there, if you are a plumber then contact any local college or training centre to book yourself on the unvented course, do they use unvented in australia? find out before you go and pay money for something you wont get to use
Try your local seat of learning for plumbers (tech. college).
Some crash course plumbing training companies also provide these courses.
The cert won't cover you for Oz, and I believe that you need other quals, to be a plumber over there.
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Surprised Walters not advised you to fit a thermal store as even direct unvented cylinders can apparently explode or fit 10 remeha avantas and combine their outputs.......now the internets reporting how poor the avantas are he's had to read something else.
Nb,though you were banned.
Nb,though you were banned.
So you mean 'Ole 2 combis' is back!
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