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great thanks, looked everywhere for them and the local plumb centre didnt do them

Oh and usually a fitting will blow first, Very hot water will be expelled, though being a sealed system only a few litres will come out before it airlocks. Also depending on condition a rad or heat exchanger could give way. Either way if its a rental and a tenant is scalded you could end up...

You sure its not a faulty gauge? If the safety hasnt blown at 3 bar its at fault too and should also be replaced. The vessel can be recharged using a bike pump. If vessel is done your cheapest option is to fit an external one as boiler manufacturers know hoe to charge for a replacement...

Hi all, i am wondering what you call or where to get a mechanical stat for the HW cylinder, its the ones that looks like a straight trv with the thermostatic head that has a vail on it that you can run over and put in contact with the cylinder sufrace. This is for a big house and using one that...

hes a big lad sitting behind his keyboard , maybe the power has got to his head

sorry sir yes i myself really am fitting it, so many people with bad attitudes on this site. thanks for the real replies

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It can happen but after only two years You'd like to hope it hadnt, but these plastic venturis become so brittle from heat damage that they can just disintegrate in your hand into nany pieces. Id consult my manufacturers instructions or download it if its lost and check what the error code...

Certainly not good to use the boiler with the cover off as poc's can enter the room, but the boiler can be fired by an engineer with the cover off for various reasons and fault finding procedures

im not too familiar with that boiler but in the past i have found the same problem being linked to the fan venturi, this creates a pressure difference and tells the boiler to fire through the pressure switch, if the venturi breaks (they can be brittle) the boiler wont fire, but with the room...

Hi all i am fitting a new oil condensing boiler out in the garage, adding a megaflow and doing away with the f & e tank and water storage tank, the megaflow will be in mid house. The question is, can i fit the pressure vessel and quick fill loop in the new "airing cupboard" and have it...

cheers oil man i know, im going to put the lower nozzle in as stated by grant to lower it by 5.5kw and see hw that goes for me.

sorry for my late reply i was away for the weekend there. i have no room stat fitted. my pump connections are 28mm. i have turned my pump down to mid setting and my rads all seem to be heating, i timed the cycle once earlier it fired for 1 minute exactly to bring up to temp, then remained off...

the vent and feed go into coil at another cylinder on far end of house. the aga heats that cylinder so the ch coil has a valve closed to stop it circulating that coil, it still circulates the unvented though.

cheers for your reply ill try toning the nozzle down. circulation seems to be good, and i balanced down the rads at the end of the house the boiler is on. i just dont know how its losing heat so quick to need to reignite. do you think this is very unefficient? or will it just waste a small...

in what way do you mean the negative flow? all my flows and returns are as they were before and pump on the flow coming from boiler. i have a motorized valve manually open at the minute to upstairs circuit so its acting as a bypass at the minute if the other valves close themselves

and we have serious heat loss, 250 year old house, very little roof space insualtion and old walls, its always been a cold house. can certainly feel more heat with this new boiler though. is this unefficient having to start and stop?

the old boiler was 110,000 btu's and the heat wasnt enough for the size of house. do you think reducing the 5.5kw to next nozzle size down will make much of a difference? also why is it cycling? should it get up to temp and stay off for a while before kicking in again? thats why i dont...

just a manual bypass. have it closed at the minute while trying to sort this out. any ideas?

hi all, i have just fitted a new oil condenser in place of a 25 year old oil boiler in my house.house size is 5000sq feet double glazed but not insulated well and is draughty, 20 radiators some not convectors and then a coil in the pressurised cylinder.The house is fairly long not wide and the...