Service manual

G.Fire Service Manual 23 Issue A — © Masport, March 2004

4 CONVERSION

4.1 CONVERTING CARDRONA STD and ACC FIRES

1. Remove the glass, logs, embers and burner. See section 1.

Remove the pilot jet (See 1.9) and fit the new

pilot jet. (0.51 for NG, or 0.35 for ULPG and

PROP).

3. Remove main jet (injector) from the elbow at the right end of the burner tray, and fit the new jet in

its place. (2.96 for NG, or 1.8 for ULPG and PROP).

Note. When replacing an injector, it should not be over-tightened, and a small amount of teflon

thread sealant (not tape) should be applied to the thread to prevent gas leakage.

4. Replace the burner and re-install the logs, embers and glass etc. as previously detailed. See section

5. Remove the side and rear access panels to expose the control valve. See 1.6.

6. For ACC models only, disconnect the HI/LO control rod at the top of the SIT 820 valve, remove

the knob and change the pressure regulator directly under the knob for the new one supplied with

the conversion kit. (It may be necessary to remove the valve from the heater if you do not have a

special short screwdriver for the regulator retaining screws). Re-assemble the valve, using the new

knob supplied with the kit, and refit the control rod, ensuring that theknob at the top of the rod

aligns correctly with the wording on the heater.

7. Connect the gas supply and check all new joints for gas leaks.

8. Adjust the high and turndown gas pressures as detailed in section 3. The pressures are:-

GAS PRESSURES ECS II ACC STD

kPa

NG ULPG PROP NG ULPG PROP NG ULPG PROP

High Pressure 0.9 2.0 2.0 0.85 2.2 2.2 0.85 2.2 2.2

Turndown Pressure 0.35 0.5 0.5 0.43 1.36 1.36 0.23 0.7 0.7

9. Replace the side and rear access panels.

10. Carry out a full test firing procedure as described in the installing and operating manual.

4.2 CONVERTING MONACO S2 ACC FIRES