109
GB
the value Qs is obtained from:
where
Q1 is the flow rate expressed in litres freed in n° 10 start-ups in the safety time.
Ts1 is the sum of the effective safety time in the 10 start-ups.
Qn is the nominal power.
To obtain Q1, operate as follows:
● Disconnect the control electrode cable (ioniser electrode)
● Read the gas meter before the test
● Carry out n° 10 burner start-ups, which correspond to n° 10 safety blocks.
● Read the gas meter again; subtract the initial reading and the Q1 value is obtained.
e.g. initial reading 00006.682 litres
final reading 00006.947 litres
total Q1 00000.265 litres
● By carrying out these operations, we can obtain Ts1 by timing n° 1 start-up (safety blocks) for the n° of start-
ups.
e.g. Effective safety time = 1”95
Ts1 = 1”95 x 10 = 19”5 Ts1 = 1”95 x 10 = 19”5
● If at the end of this control there should be a value exceeding 100, intervene on the speed regulation of the
opening of the main valve.
MAINTENANCE
Electric control board
To access the electric control board, loosen the screws (1) that hold the terminal board cover (A). Remove the
clamp covers (A). ATTENTION: these parts may be live during functioning.
1
1
A
M
