gas supply too small.

[boilerbeasty]

i'm moving house, and just got a copy of the latest service report for the boiler there. Its a C&M Britony SE100 (hmmm, nice and cheap - well cheap anyway). It was noted that the gas supply is only 15mm, and its supposed to be 22mm (according to C&M install guide).

What effect will this have ? Does it 'just' mean less gas and so less heating for either CH or DHW ? Or is there some other potential problem with this - some boiler damage or increased wear & tear ?

Its out of warranty, for what its worth, and I'm not planning to get a BG or other service contract - so not too worried about being refused help on grounds of having 15mm instead of 22mm. (if that was a possibility).

thanks in advance.

 

[chrishutt]

15mm might be OK if it's a short run, but you don't give details of total run length, pipe sizes and other appliances drawing gas from same pipe. The boiler burner pressure should be checked to see if it's at design pressure.

 

[corgiman]

also check the gas rate.

need a CORGI puppie to ascertain whether or not its ok

 

[boilerbeasty]

ta for the replies
haven't moved in yet, so i'm not sure of the impact- e.g. is it serving the gas cooker as well...
the servicing was done by a corgi - the information was 'advise that the gas supply pipe is too small (15mm)' or similar words.
probably will get it checked/serviced before next winter any way - just wanted to know if it would 'break' anything rather than use less gas/provide less heat

 

[corgiman]

if the appliance doesnt get enough gas this can lead to incomplete combustion

inthe case of you boiler this probably will not lead to a dangerous situation as it s room sealed but will lead to excessive sooting of heat exchanger

if its not right it should be fixed

 

[chrishutt]

the servicing was done by a corgi

He should have checked and recorded the burner pressure (if not, why not?). Compare this with the design level given by C&M (web site?).

inthe case of you boiler this probably will not lead to a dangerous situation as it s room sealed but will lead to excessive sooting of heat exchanger

Not on this boiler. All that will happen is that the hot water will not get so hot. May not be a significant problem. The burners will work fine on very low gas pressure - they normally do in CH mode.

 

[boilerbeasty]

ok i'll get my own corgi in when we've moved - cheers

 

[corgiman]

the servicing was done by a corgi

He should have checked and recorded the burner pressure (if not, why not?). Compare this with the design level given by C&M (web site?).

inthe case of you boiler this probably will not lead to a dangerous situation as it s room sealed but will lead to excessive sooting of heat exchanger

Not on this boiler. All that will happen is that the hot water will not get so hot. May not be a significant problem. The burners will work fine on very low gas pressure - they normally do in CH mode.

well you are right mate but we do have to follow the regs dont we and they say that we can have no more than a 1mbr drop over an installation and the gas rate must adhere to manufacturers requirement.

so it must be right and we have no descretion over it.