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ok thanks for that

vaillant of worcester

mr ziggy you system requries a `system boiler` to complete it. you can have as many heating zones as you like,i would install an `S`plan with auto-by-pass if your cylinder is unvented. its incorrect to install any other type of boiler to this system. SYSTEM BOILER= heat only boiler (that...

yea my bad

electrical feedback in heating system controls?? anybody _____________________________ lynda, moderator please note forum rule 1a

the political issues dont bother me, i just install the things inline with the dam builing regs, after all we don`t make the rule up, thats for the powers that be. all i know is i will install what ever comes on the market if it`s what poeple want..solar systems..heat pumps.. what ever,we`ll all...

why go for a combi when you don`t need one?, if the guy has a solar cylinder why not use this to supply all the hot water and plumb the system in as an `S` PLAN, `Y` is pointless as you would have to use a 2 port zone valve as well as a 3 way valve, for the cylinder positive energy cut-off that...

yea sort of makes a bit more sense. so the neutral becomes the live? is this through a wiring faullt, say the wire is damaged? has anyone got a line diagram.

only a corgi engineer can work on gas

system boiler, combi will only work if you have an thermal heat store connected to the solar colector, like a water to water heat exchanger. No a system boiler is the only way to do this job mate. you have to be corgi to work with gas, and clear ski registered to install solar systems,also...yes...

you can use compression on plastic, no problem. just make sure you use an instert!

electrical backfeed in connection with heating controls??? could anybody please explain how backfeed works. thanks

why not just let the combi do the lot,ant seem many combi`s ganged into hot water cylinders ???!! sould like crazy plumbing to me

no a combi can not do that,only a system boiler will. if you only have say 3 or 4 hot water draw-off point. remove the copper cylinder and weigh it in for scrap, then have a combi installed.if you have a few hot draw-offs go for say a 30kw model

remove and renew, only way to be sure.`O` ring damaged.

change valve or the tap

installed a potterton ptt2 cylinder stat to replace a ptt1 that had burnt out. dam thing would`nt work. Rang tech and they said ptts not compatible will potterton 3000 time switch in use ??? guy on other end of phone told me to remove swiched live for cooling on cylinder stat! the sysyem is a...

don`t shop on e-bay mate! try PRV`s on incoming supplies,if the taps mix in the body the pressures need to be equal or you`ll have all kinds of problems.

air lock,see any auto-air vent are out of service.

if the new stat doesn`t ask for a neutral just make the old wiring electricaly safe will a 5amp choc bloc.