Transformation To Operate With Other Gas Type; Replacing The Main Burner Nozzle; Replacing The Pilot Burner Nozzle For Models G77/F2V7-A4S, G77/F2V7-A4B; Replacing The Pilot Burner Nozzle For Models G77/F14-A4S, G77/F14-A4B And G77/F28-A7S, G77/F28-A7B - Diamond OPTIMA Serie Manual De Instrucciones

3.
Shut off the gas valve supplying the unit.
3.1
REPLACING THE MAIN BURNER NOZZLE (FIG. 5)
- Open the cabinet door and remove the oil containers.
- Loosen screw (D) and press the primary air regulator (C) in the venturi.
- Using a size-12 spanner, unscrew nozzle (B) and replace it with the one corresponding to the selected gas, according to the
indications on Table II.
3.2 REPLACING THE PILOT BURNER NOZZLE FOR MODELS G77/F2V7-A4S, G77/F2V7-A4B (FIG. 6)
- Attention : First remove the spark-plug (Fig. 6 position 5) by unscrewing the nut (Fig. 6 position 8) with a 10mm-spanner.
- Unscrew the nut using a 10mm-spanner (Fig. 6 position 2) and remove the pilot nozzle (Fig. 6 pos. 7). The nozzle is hooked
onto the bicone (Fig. 6 position 3).
- Exchange the pilot nozzle with one corresponding with the selected gas, in accordance with the indications of Table II.
- Tighten the nut firmily with a 10 mm. spanner.
3.2.1 REPLACING THE PILOT BURNER NOZZLE FOR MODELS G77/F14-A4S, G77/F14-A4B AND G77/F28-
A7S, G77/F28-A7B (FIG. 7)
- Attention: first remove the spark-plug (Fig.7 pos. 9) by unscrewing the nut with a 10 mm. spanner.
- Unscrew the pilot nut using a 10 mm. spanner (Fig. 7 pos. 2) and remove the pilot nozzle (Fig.7 pos.7)
- Exchange the pilot nozzle with one corresponding with the selected gas, in accordance with the indication of Table II.
- Tighten the nut firmily with a 10 mm. spanner.
3.3

REGULATING THE PRIMARY AIR, MAIN BURNER

- Start up the unit by following the user instructions.
- Check the gas seal with soapy water, ignite the pilot by following the operating instructions and check it.
- To check the primary air regulation for the main burners, distance "X" should be adjusted in a correct manner (see injector
Table II, fig. 5 position C); a correct primary air regulation prevents, the flames from lifting off when the burner is cold, and
from returning when the burner is hot.
- Check the inter-ignition and the flame regularity on maximum.

TRANSFORMATION TO OPERATE WITH OTHER GAS TYPE

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GB