55
CHECK OF THE GAS QUANTITY ON START-UP
The check of the gas quantity on start-up is performed by using the following formula:
Ts x Qs
≤
≤
≤
≤
≤
100
where
Ts
= Safety interval in seconds
Qs
= Energy released in the safety interval expressed in kW
The
Qs
value is obtained by :
The maximum flow and start up flow must be regulated.
Ensure that there are no leaks from the gas ramp.
stabilizer
main valve
safety valve
pressure gauge
where
Q1
is the flow rate in litres released in 10 starts within the safety interval.
Ts1
is the sum of the actual safety interval in 10 starts.
Qn
is the nominal power.
GAS REGULATION
MAXIMUM FLOW
●
Install a pressure gauge to measure the gas pressure at the burner head;
●
Set the gas valve to its maximum opening;
●
With the burner operating, regulate the stabilizer (if present) until the desired flow has been achieved (read
on the meter); check the pressure indicated on the pressure gauge;
●
Regulate the valve by closing it until the pressure indicated on the pressure gauge starts to decrease.
At this point the desired maximum flow has been set and checked by both the stabilizer and the gas valve.
