Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[aaronjb]

Its the expansion vessel OK and large enough?

looks almost new, no leaks, takes the expansion from zero to 1.5 bar with no problems afaict

Do you know what size it is and have you checked the air pressure on it?

give me 5 mins

ISTR you have to check the air pressure with no water in the system.. so that one might be a bit hard in 5 mins..

Unless that's why you've been gone longer than 5 mins

[feeutfo]

i think hes checking there is room for the water to expand into, there needs to an air gap it it will lock.

[Marks DTM Calib]

Checking that and its volume, is it a cylinder or flat compact one? (Suspect cylinder given its a retro fit)

[feeutfo]

Checking that and its volume, is it a cylinder or flat compact one? (Suspect cylinder given its a retro fit)

cylinder

[feeutfo]

looking at google, cylinder seems to be about 8 litres, which is about right. visually anyway.

[paul.77]

maximum I would expect of 0.5 bar rise from cold when heating is turned on. If no signs visable signs of leaks or complaints  from neighbours below. It could be leaking internaly through the condensating heat exhchanger, To check this the boiler has to be cold,,left off for about an hour.You can check the expansion vessel at the same time
what are the last 4 numbers of the boiler serial number?
paul

[feeutfo]

3544, but its only a year old.

[paul.77]

if its a year old it may be under guarantee.
the last 4 numbers on the small silver sticker on the drop down flap.
is it the biasi m96 24

[feeutfo]

it will be under warrenty of 5 years

iirc no drop down flap, its a worcester condensing boiler

[paul.77]

sorry getting consfused with another post. 
if the boiler is turned off and is cold, there should be no water flowing down the  condensate pipe if there is then it may be a problem with the condenser unit. With the boiler cold and empty the expansion vessel should have a pressure of 0.75 bar average,for larger systems I would put 1 bar in.