40kw Baxi Platinum low operating pressure

[Petefinny]

Hi guys ive got a 40kw Baxi Platinum receiving 21mb at the gas valve inlet and when put into calibration mode is getting 14mb working pressure, pipe sizing is 28mb 3 meters from boiler and more than adequate, this is the only appliance on the gas supply so why its so low, any help guys to try and fathem this out, just started fitting these platinums.

 

[Billy Bob Bob]

meter govoner faulty

 

[GrahamM]

As above...did you not check the working pressure at meter?

 

[mfgs]

First thing to check is the working pressure at the meter, could be 15mb so the pipework is sized ok but the governor is faulty.

 

[Petefinny]

working pressure at the meter was 16mb, was getting 14 at the boiler inlet, National Grid came and changed the governor still no better, they are digging up the road tomorrow to find out what is at fault, he started blaming the size of the boiler but it is the only gas appliance in the building so its not really that big for the supply, said could be a blockage or kink, checking it out tomorrow.

 

[vern]

Service will have been live inserted, their problem, I.e they have feed 20 mm PE pipe up the old steel main, or the branch tee off the main is chocked, he will insert a test tee on the meter ECV effectively getting an upstream reading before the governor, which should be 30-75 Mbar, make sure the boiler is is max attack mode when this is done, as a new service has to be authorised via a supervisor

 

[Petefinny]

Yes it was on attack mode when he was there and tested it , he phoned up the supervisor and got the ok to check more into it, he took the governor off at ecv then opened up it up but just put his hand over it ha ha, they no its in adequate and are sorting it out.

 

[vern]

Yes it was on attack mode when he was there and tested it , he phoned up the supervisor and got the ok to check more into it, he took the governor off at ecv then opened up it up but just put his hand over it ha ha, they no its in adequate and are sorting it out.

It will be replaced Peter then FOC, make sure you set up the boiler again and test when they have done etc

 

[Petefinny]

He had his U-Gauge at the meter and I had mine on the boiler when he was checking it so I could keep an eye on things, will check it all again and commission it once its finished, Thanks for the advice vern

 

[mfgs]

Lucky they are doing anything. I had an issue with low pressure and just got told that they wont act upon it unless it is lower than 15mb at the meter. They seem to make their own regs which contradict the ones we work to.