Our Village Hall has about 25m run of 28mm pipe after the gas meter then a further 5m of 22mm to the kitchen combi boiler and a further 3m of 22mm to a gas cooker. About 6m into the 28m run a 22mm pipe is teed off for about 5m, and feeds a further combi boiler.
On a recent check with all appliances, including gas rings, on, the pressure at the kitchen boiler inlet was only 14.6 Mb (Meter outlet is 21Mb). Am I correct that according to the regulations we should still get 20Mb (1Mb drop) at all appliance inlets under these conditions?
On a recent check with all appliances, including gas rings, on, the pressure at the kitchen boiler inlet was only 14.6 Mb (Meter outlet is 21Mb). Am I correct that according to the regulations we should still get 20Mb (1Mb drop) at all appliance inlets under these conditions?