91
sure test point.
– Put the plastic cap (1) back on the modu-
lator and seal with a drop of coloured
sealant if necessary.
4.5 DISASSEMBLY OF
EXPANSION VESSEL
To disassemble the expansion vessel pro-
ceed in the following way:
– Make sure that the boiler has been emp-
tied of water
– Unscrew the union that connects the
expansion vessel and the screws that
release it from its bracket.
Before refilling the system, make sure that
the expansion vessel is pre-loaded to a pres-
sure of 0.8÷1 bar.
4.6 REMOVAL THE OUTER CASING
For easy maintenance of the boiler it is pos-
sible to completely dismantle the casing fol-
lowing these simple instructions (fig. 33):
– Pull the front panel (5) fixed with pin clut-
ches forward.
– Unscrew the two screws that fix the con-
trol panel to the shell.
– Remove the side panel (6) by unscrewing
the two screws that fix it to the upper
bracket (7) and to the support control
panel. Push upwards to free it from the
notches in the right side.
– Unscrew the four lower screws that fix
the sides to the support control panel
and the two screws that fix it to the
IT
ES
PT
GB
Fig. 32
KEY
1
Burner manifold
2 Extension 1/2”
3 Lock nut 1/2”
4 Washer ø 6,1
5 Nozzle M6
6 Protection
7 Burners
WARNING: To ensure a perfect seal, always use the
washer (4) supplied in the kit when replacing nozzles, even
in burner units for which it is not specified.
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