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L
J
K
Figure 11.13
3 Turn off the gas supply and disconnect the gas isolation cock
connector from the inlet port of the gas valve.
4 Using pliers, remove the spring L and the rubber pipe M (Fig-
ure 11.13).
5 8QVFUHZ WKH FRQQHFWRU 1 UHPRYH WKH ¿[LQJ IRUN 2 DQG UH-
move the pipe P.
6 Unscrew the screws K and remove the valve.
7 Reassemble the valve carrying out the removal operations in
reverse order.
Warning: Be careful not to damage the OR gasket of
the gas pipe when inserting the pipe in the air box
(air/gas mixer).
%HIRUH ¿WWLQJ D QHZ YDOYH LW LV DGYLVDEOH WR SUHVHW LW DV IRO-
lows.
8 Remove the brass plug and turn the plastic screw inside it
fully clockwise until it stops. Do not overtight.
9 7XUQ LW FRXQWHUFORFNZLVH DQG WXUQV
10 $GMXVW WKH JDV YDOYH XVLQJ WKH ÀXH DQDO\VHU DV GHVFULEHG LQ
section 11.3.
After any service operation on the components of the gas
circuit check all the connections for gas leaks.
- 36 -
GAS VALVE
O
P
N
M
Warning: After cleaning or replacement as detailed
above, it is deemed necessary to undertake a com-
bustion analysis as detailed in section 11.3.
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