problem i am faced with !
I have been called out to a cafe which has
1 water boiler 22kw
2 chip fryers total 44kw
1 oven 25kw
total load 91kw.
they are being supplied by calor gas. Recently comeone install a new bulk tank with out an ecv or test point on the first stage. The first stage is piped in 1/2 in up to where the secong stage reg which then changes to 3/4 for a run of 20meters to the appliances.
Customer reported when full load was on, all the appliances dropped down.
I carried out a working pressure on the appliances an found that when all the appliances was turn on the working pressure dropped to 11 mbar. I changed the second stage reg and retested, but the working pressure with all appliances was still on 20mbar.
With one 22kw appliance on the pressure dropped to 30mbar. standing pressure of 50mbar.
Is the pipework blocked.
The first stage is at 750mbar no problem there.
From the pipe sizing chart 3/4 isnt big enough for 90kw but it should be good enough for 22kw.
Please help
I have been called out to a cafe which has
1 water boiler 22kw
2 chip fryers total 44kw
1 oven 25kw
total load 91kw.
they are being supplied by calor gas. Recently comeone install a new bulk tank with out an ecv or test point on the first stage. The first stage is piped in 1/2 in up to where the secong stage reg which then changes to 3/4 for a run of 20meters to the appliances.
Customer reported when full load was on, all the appliances dropped down.
I carried out a working pressure on the appliances an found that when all the appliances was turn on the working pressure dropped to 11 mbar. I changed the second stage reg and retested, but the working pressure with all appliances was still on 20mbar.
With one 22kw appliance on the pressure dropped to 30mbar. standing pressure of 50mbar.
Is the pipework blocked.
The first stage is at 750mbar no problem there.
From the pipe sizing chart 3/4 isnt big enough for 90kw but it should be good enough for 22kw.
Please help
