Hi,
During commissioning a Vaillant Ecotec Plus 837 boiler I measured the gas pressures which were 18 mbar at the meter and 14 mbar at the boiler gas valve, with the boiler at max load. The Vaillant manual says that the minimum gas pressures should be 19 mbar at the meter, and 15 mbar at the gas valve.
Questions:
1. Is 14 mbar at the boiler OK, or should I upsize the pipework from existing 22mm to 28mm?
2. Should I notify the gas company that the pressure when the gas is flowing is below 19 mbar (as suggested in Vaillant manual) The standing pressure at the meter is 28 mbar.
Cheers.
During commissioning a Vaillant Ecotec Plus 837 boiler I measured the gas pressures which were 18 mbar at the meter and 14 mbar at the boiler gas valve, with the boiler at max load. The Vaillant manual says that the minimum gas pressures should be 19 mbar at the meter, and 15 mbar at the gas valve.
Questions:
1. Is 14 mbar at the boiler OK, or should I upsize the pipework from existing 22mm to 28mm?
2. Should I notify the gas company that the pressure when the gas is flowing is below 19 mbar (as suggested in Vaillant manual) The standing pressure at the meter is 28 mbar.
Cheers.