Boiler installation
7
21
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
z
Close connection for relief valve (
Î
Fig. 14) and all
other open connections with plugs.
z
Disconnect the expansion tank from the system by
closing the expansion tank shut-off valve.
z
Open mixing and shut-off valves on hot water side.
z
Fill boiler slowly with water from the feed water con-
nection.
z
Open automatic vents slightly to allow the air to es-
cape.
z
Slowly fill heating system. Observe pressure display
on pressure gauge during this process.
z
Check connections and pipes for leaks.
z
Bleed heating system through the bleed valves on
the radiators or other air elimination components or
high points in the system.
z
If the pressure drops during air bleeding, water must
be added.
z
Install pressure relief valve (
Î
Fig. 14).
z
Open fill valve for additional filling.
z
Set static system pressure to at least 15 psi at indi-
cated on pressure relief valve (
Î
Fig. 15).
z
Close fill valve and remove fill hose for fill valve.
Fig. 14
B-kit installation
1
Pressure relief valve ¾"
1
VK
RK
EL
Fig. 15
Pressure temperature gauge
1
Pressure gauge
2
Set pressure mark
1
2
