GAS VALVE ADJUSTMENT
The maximum delivery and the start up delivery must be set.
MAXIMUM DELIVERY ADJUSTMENT
- Assemble a gauge to measure the gas pressure at the burner head.
- Open the gas valve to the maximum.
- While the burner is working, act on the stabilizer until the required delive-
ry is reached (read the meter): read the pressure value on the gauge.
- Act on the valve adjustment by turning the valve towards o until the
pressure on the gauge just hints at decreasing. At this point the maxi-
mum delivery required is set and controlled by both the stabilizer and the
gas valve.
VALVE ADJUSTMENT MULTIBLOC MB-DLE.../B01
1 Opening speed adjustment
2 Delivery adjustment
3 Stabilizer adjustment
4 Locking screw
After loosening screw 4, turn the locknut 2 clockwise to obtain
minimum delivery, anticlockwise for maximum delivery. Once
adjustment is completed block screw 4 again.
MULTIBLOC MB-ZRDLE ..../B01 VALVE ADJUSTMENT
1 1st/2nd stage delivery adjustment lock screw
2 Stabilizer adjustment
3 Protective cover for initial fast-start adjustment device
4 2nd stage delivery adjustment
5 1st stage delivery adjustment
To adjust the 1st/2nd stage delivery loosen screw 1. Turning 4 and 5 anti-
clockwise increases the delivery. Turning clockwise reduces the delivery.
Once you have carried out the necessary adjustment re-tighten screw 1.
To adjust the initial fast-start mechanism remove the cover 3 and, using the
rear of the cover as a tool, rotate the pin.
CHECKING THE QUANTITY OF GAS AT IGNITION
To check the quantity of gas at ignition, apply the following formula:
Ts x Qs
≤ 100
where
Ts = Safety time in seconds
Qs = Energy freed in safety time expressed in kW
The Qs value is obtained from:
- 17
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Gauge