PENSOTTI Solenne PCH50B-H Instruction Manual page 69

MAINTENANCE INSTRUCTIONS
Expansion vessel (see fig. 2)
• Close the shut-off valves and drain the central
heating circuit of the boiler.
• Use a
19 mm wrench to unscrew the pipe
coupling to the vessel.
• Unscrew the fixing screws and remove the
upper mounting bracket. Remove the expansion
vessel from the left side of the boiler.
• Replace
the expansion vessel and re-
assemble the components following the above
procedure in reverse order.
• Switch on the electricity, water and gas
supplies and fill the system with water. Check for
any leaks from the joints and bleed off any air
from the circuit;
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