To perform a fuel conversion on the SL 85, 115, 160 and 199 G3 boilers:
1. Before you disconnect the electrical power, ensure that the gas supply is turned off at
the gas shut-off valve.
2. Remove the front door.
3. Undo the nut at the top of the gas valve.
4. Push down on the gas valve, and remove the orifice and O-ring.
5. Insert the fuel-appropriate orifice (from kit) into the O-ring.
6. Reinstall the orifice and O-ring.
7. Tighten the upper nut onto the gas valve.
8. Place conversion labels associated with the new fuel onto the boiler.
9. Turn on the gas supply and connect the electrical power.
10. Check for gas leaks.
11. Tune the gas valve (see "Adjusting the gas valve" below).
6.3.3 Adjusting the gas valve
Danger
Making adjustments to the IBC gas valve without a properly calibrated gas
combustion analyzer and by persons who are not trained and experienced in its use
is forbidden. Failure to use an analyzer can result in an immediate hazard.
Figure 50 Gas valve and fan components
Section: Boiler operation
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