MAINTENANCE GUIDE 4.4 FAN Tools Time 15 min 1 Remove the combustion assembly (see 4.3) Remove the three screws to free the fan. Twist the gas valve anti-clockwise to disengage it from the fan 1 3 1. Venturi 2. Gasket 3. Fan 2 Fan & mixer venturi according to the model Power Fan Venturi diameter 12 kW EBM RG 128 45 W ø 14 mm 18 kW EBM RG 128 45 W ø 17 mm 24 kW EBM RG 128 45 W ø 17 mm 30 kW EBM RG 128 45 W ø 21 mm 58
MAINTENANCE GUIDE 4.5 GAS VALVE Tools Time 15 min 1 Remove the combustion assembly (see 4.3) Twist the gas valve anti-clockwise to disengage it from the fan Replacement Gas Valves are not factory set and will need to be set up ( see page 39) 1 Gas outlet 2 4 5 6 Gas inlet 3 LEGEND 1. Venturi 4. Inlet test niple 2. Gas valve 5. Offset adjustment 3. Solenoids 6. Throttle adjustment 59
MAINTENANCE GUIDE 4.4 FAN Tools Time 15 min 1 Remove the combustion assembly (see 4.3) Remove the three screws to free the fan. Twist the gas valve anti-clockwise to disengage it from the fan 1 3 1. Venturi 2. Gasket 3. Fan 2 Fan & mixer venturi according to the model Power Fan Venturi diameter 12 kW EBM RG 128 45 W ø 14 mm 18 kW EBM RG 128 45 W ø 17 mm 24 kW EBM RG 128 45 W ø 17 mm 30 kW EBM RG 128 45 W ø 21 mm 58
MAINTENANCE GUIDE 4.5 GAS VALVE Tools Time 15 min 1 Remove the combustion assembly (see 4.3) Twist the gas valve anti-clockwise to disengage it from the fan Replacement Gas Valves are not factory set and will need to be set up ( see page 39) 1 Gas outlet 2 4 5 6 Gas inlet 3 LEGEND 1. Venturi 4. Inlet test niple 2. Gas valve 5. Offset adjustment 3. Solenoids 6. Throttle adjustment 59
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