PENSOTTI PCH 50B-H, Инструкция по эксплуатации

Страница: 69 / 80

MAINTENANCE INSTRUCTIONS
67
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;