Dismantling Prior To Servicing; Cleaning The Boiler; Combi 70 V3 Baffle Positions; Combi 90 V3 Baffle Positions - Grant Combi 70 V3 User's Installation Manual

10.2

Dismantling prior to servicing

1 Pull off the front panel.
2 Carefully lift up the expansion vessel and remove it
from the front of the boiler. Place it on the floor,
taking care not to strain the flexible pipe.
3 Disconnect the flexible air tube from the burner.
4 Remove the burner fixing nut (top of mounting
flange) and withdraw the burner. If required,
disconnect the flexible oil line(s), use a suitable
container to prevent any oil spillage.
Note: If two flexible lines are connected to the
burner, identify (mark if necessary) which is the
inlet and return if they are to be disconnected.

Cleaning the boiler

10.3
See Fig. 26, 27, 28, 29 or 30
1 Combi 90 V3, Combi Max and Vortex Combi
Remove the four nuts and washers securing the
front cleaning door and withdraw the door.
Take care - it is heavy.
1 Combi 70 V3
Remove the two nuts and washers securing the top
cleaning cover and lift it off the boiler.
2 Remove the baffles as shown in Fig. 26, 27, 28, 29
or 30.
3 Remove all deposits from the baffle plates and all
the boiler internal surfaces using a stiff brush and
scraper if necessary.
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10 - BOILER SERVICING
Fig. 27 - Combi 90 V3 baffle positions
Combi V3, Combi Max and Vortex Combi models
4 Check the condition of the flue, clean as necessary.
5 Check the condition of the front cleaning door seal on
the Combi 90 V3, Combi Max and Vortex Combi, or
the cleaning cover gasket on the Combi 70 V3,
Replace if necessary.
6 Replace the baffles, ensuring they are correctly
fitted. See Fig. 26, 27, 28, 29 or 30.
Fig. 26 - Combi 70 V3 baffle positions