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Went to service a boiler today.
First tests I do is tightness/letby and then working pressure at meter and inlet on gas valve.
I was getting 10mbar at the meter working pressure. They only have the boiler, no other appliances in gas.
Boiler is a Worcester Greenstar 40CDi conventional.
Called transco as could have been a dodgy regulator. Or undersized pipework but I wanted to rule out the regulator first as standing pressure was only 21mb.
They attended when I wasn't there and changed the regulator but said nothing was wrong with the old. But they tested the meter/pressure when the boiler was in 'condensing mode' - you know when you restart the CDi's and it does the minimum rate thing for about 20 mins.
So he got a normal reading, as did I on minimum rate. But as soon as it got to max rate went straight to 9.5mb at the meter.
Turns out the run needs upping from 22 to 28 - apparently a guy did a new run which is about 9 meters with let's say 8 elbows in 22 and said everything was fine. They'd also left a 4m run of pipework completely unsupported practically hanging in mid air.
Question: do national grid have to know about boilers? Surely they'd know the boiler was in min rate mode and should have waited for max rate to kick in? Or do they rest the regulator differently?
Have turned off the boiler. Owner is gutted as they've just paid £30k having the kitchen tiled in cement tiles which is over the new gas run. Oops!
First tests I do is tightness/letby and then working pressure at meter and inlet on gas valve.
I was getting 10mbar at the meter working pressure. They only have the boiler, no other appliances in gas.
Boiler is a Worcester Greenstar 40CDi conventional.
Called transco as could have been a dodgy regulator. Or undersized pipework but I wanted to rule out the regulator first as standing pressure was only 21mb.
They attended when I wasn't there and changed the regulator but said nothing was wrong with the old. But they tested the meter/pressure when the boiler was in 'condensing mode' - you know when you restart the CDi's and it does the minimum rate thing for about 20 mins.
So he got a normal reading, as did I on minimum rate. But as soon as it got to max rate went straight to 9.5mb at the meter.
Turns out the run needs upping from 22 to 28 - apparently a guy did a new run which is about 9 meters with let's say 8 elbows in 22 and said everything was fine. They'd also left a 4m run of pipework completely unsupported practically hanging in mid air.
Question: do national grid have to know about boilers? Surely they'd know the boiler was in min rate mode and should have waited for max rate to kick in? Or do they rest the regulator differently?
Have turned off the boiler. Owner is gutted as they've just paid £30k having the kitchen tiled in cement tiles which is over the new gas run. Oops!
