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7.8.9
Gas valve
▶ Isolate the mains electrical supply and the gas supply at the boiler gas
cock.
▶ Remove the combustion air inlet pipe.
▶ Disconnect the electrical connector from the valve
1. Remove the gas pipe from the top of the valve.
2. Undo the bottom gas pipe connection.
3. Remove the screw securing the gas valve.
4. Lift the gas valve to clear the bottom gas connection.
5. Pull the gas valve forward out of the boiler.
4.
Fig. 78 Gas valve
▶ When fitting the new valve, start with the bottom gas connection and
tighten by hand before making any other connections to the valve.
▶ Secure the valve with the screw.
▶ Tighten the bottom connection firmly with a suitable spanner.
▶ Connect the top gas pipe.
▶ Reconnect the electrical connector.
▶ Open the boiler gas isolator.
▶ Check all the gas connections for gas tightness.
7.8.10 Fan assembly
CAUTION: Component replacement:
▶ After replacement of a gas related component,
where a gasket or seal has been disturbed or
replaced, check for gas tightness using a gas sniffer/
analyser.
▶ On re-assembly check all affected seals for cracks,
hardness and deterioration.
If damaged or in any doubt the seal must be replaced.
▶ Also after re-assembly, carry out the following
checks:
Fan pressure in section 7.5,
Flue gas analysis in section 7.6.
To remove the fan the following components will have to be removed
first:
• Flueway
• Combustion air inlet pipe and gas pipe
Flueway removal
CAUTION: Flueway sump seal.
▶ Replace the sump seal every time that the Flueway to
sump connection is disturbed.
1. Release the two screws securing the Flueway to the sump.
Greenstar Ri Compact
ErP
6720813282 (2015/07)
1.
5.
3.
2.
2. Using a screwdriver under the tabs (1) next to the screws, lever the
Flueway up to clear the seal and pull the Flueway forward.
3. Rotate the exhaust pipe to the left and pull the Flueway down to
separate from the exhaust pipe.
2.
1
Fig. 79 Flueway removal
Remove the used seal
4. Discard the "tubular" seal [2] or the "moulded" seal [3], depending
on which type is fitted and replace with the seal that is provided.
Fig. 80 Remove the existing seal
Fitting the "moulded" sump seal
1. Place the seal [3] on the sump interface.
2. Ensure that the lug flaps are mounted onto the sump lugs.
Before fitting the Flueway:
▶ Ensure that the seal is clean and free from debris.
Service and spares
3.
1
1.
2
4.
3
6720803800-12.1Wo
45
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