37
Open CH service valves, and repres-
surise boiler and heating system if
necessary (see Section 5.4).
6.3 Recommisioning the boiler
•
Refit the combustion chamber front
cover. Ensure that the panel is cor-
rectly fitted and a good seal is
obtained.
•
Turn on gas and electrical supply.
•
Operate burner and check flame
picture.
(see Section 6.1)
•
Check boiler functioning either
visually or by using the built-in dia-
gnostic feature
(see Section 5.11)
•
Check burner pressure (see Section
5.10) and boiler gas flow rate.
•
Check soundness of internal gas
connections.
•
Carry out electrical safety checks
(see Section 5.1)
•
Check water soundness
•
Refit case (see Section 5.14)
fig. 52 (Natural Gas)
GW 422/0
fig. 52a (Propane)
GW 1284/0
fig. 53
GW 493/0
fig. 55
GW 468/0
fig. 54
GW 411/1
