Adjust the air shutter
The air shutter is located under the ceramic fuel bed at
the back.
1. Carefully turn the fuel bed upside down and locate
the air shutter.
2. Loosen the screws on each side of the shutter and
slide the shutter as indicated below according to the
type of gas used.
3. Re-tighten the screws.
Replace the minimum rate by-pass screw
1. Turn module assembly upside down, unlock and
remove pipe assembly.
2. Remove two screws retaining the valve to
mounting bracket, being careful not to disturb other
connections.
3. Locate and remove the by-pass screw from the
valve and discard. The by-pass screw has a rubber
O-ring and may need to be pulled out using pliers
after unscrewing.
4. Insert the replacement minimum rate by-pass
screw and hand tighten using a screwdriver. Refer
to the
Specifi cations
table on page 1 for proper
by-pass screw. Note that the number is stamped on
the barrel of the screw.
Re-assemble module
1. To reinstall, is a reversal of the procedure.
2. Position and locate module in the fi rebox inserting
the valve fi rst.
be careful not to trap cables
between fi rebox fl oor and module
3. Secure module to fi rebox with previously used
screws.
4. Reconnect gas inlet to valve tightening pipe
connection. Open shut off valve and inspect
5. Test for leaks by applying a liquid detergent or soap
solution to inlet connection joint. Bubbles forming
indicate a gas leak.
Never use an open fl ame to check for leaks.
Correct any leak detected immediately.
Top side of
control valve
Minimum rate
By-pass screw
location
Air shutter
NG
Air shutter
LPG
Air shutter
3
