Westen Pulsar E, Инструкции по эксплуатации и монтажу

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7113126.02 (3-08/13) 34
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12. GAS VALVE
12.1 GASCONVERSION
The Technical Assistance Service can convert this boiler to natural gas (G20) or LPG (G31). Carry out the following operations:
A) replace the main burner injectors;
B) parameterise the electronic board;
C) mechanically calibrate the gas valve pressure regulator;
D) electronically calibrate the gas valve;
E) final checks.
A) Replace the main burner injectors
• Disconnect the boiler from the power supply;
• remove the front panel of the boiler;
• remove the screws (a) connecting the injector ramp to
the gas valve and burner;
• remove the injector ramp and the burner shield at the
same time (b) ;
• replace the ramp injectors making sure to fully tighten
them to prevent gas leaks. Injector diameters are
specified in the burner injector-pressure table.
• correctly reposition the injector ramp and the burner
shield (b) ;
• secure the screws connecting the injector ramp to
the burner and gas valve. Make sure the o-ring (c)
between the gas valve and the injector ramp is correctly
positioned;
• check the gas circuit for leaks.
B) Parameterise the electronic board
• Power the boiler;
• set the parameters (Fxx) with the values indicated in the following table, depending on the gas type following the procedure
described in the SETTING PARAMETERS section.
C) Mechanically calibrate the gas valve pressure regulator
• Connect the positive pressure test point of a pressure gauge, possibly water-operated, to the
gas valve pressure test point ( Pb );
• open the gas tap and switch the boiler to the "Winter" mode;
• open a hot water tap that can provide a flow rate of at least 10 litres a minute or make sure
there is maximum heat demand;
C1) Adjust to nominal heat output:
• remove the modulator cover;
• • adjust the tube brass screw ( a ) until the pressure values shown in the burner injector-pressure
table correspond to the nominal heat output;
• make sure that the dynamic inlet pressure of the boiler, measured at the gas valve pressure test point ( Pa ) is correct, as
indicated in the TECHNICAL SPECIFICATIONS section.
C2) Adjust to reduced heat output:
• disconnect the modulator power cable and adjust the screw ( b ) until the pressure values corresponding to the reduced power
indicated in the burner injector-pressure chart are obtained;
• reconnect the wire;
• mount the modulator cover and seal.
a
b
c
CG_2451
(b)
(a)
G20 G31
F02 0 1
F08 100
F09 100
F18 18
F45 1
F48 100
F64 1