Installation
5
pump group Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
10
Then fit back the flat rubber seal (fig. 8
, item 2
) and
the pump (fig. 8
, item 1
).
5.3
Installing the heating flow and return
Install the blue and red isolating valve
(fig. 9,
item 3
and
item 4
) with the flat rubber seals in place on the
CHR and CHF (boiler return and flow) connections.
Connect the flow pipe to the red isolating valve (fig. 9,
item 5
) free of strain. If necessary, use the screw
fitting (accessory, fig. 9,
item 7
).
Connect the return pipe to the blue isolating valve
(fig. 9,
item 6
) free of strain. If necessary, use the
screw fitting (accessory, fig. 9,
item 7
).
Calculate the flow and return pipe diameters taking
into consideration the residual head downstream of
the pump group with the minimum required volume
flow (see table 3 and fig. 24 on page 19).
The minimum diameters of the flow and return pipes
are 1½’’ and Ø 35 mm.
fig. 8
Fitting the pump
1
2
fig. 9
Installing the isolating valves
Item 1:
Pressure relief valve
Item 2:
Pump
Item 3:
Isolating valve, blue
Item 4:
Isolating valve, red
Item 5:
Flow connection
Item 6:
Return connection
Item 7:
Screw fitting 1’’ female thread (accessory)
2
3
1
4
6
7
5
NOTE
To prevent pollution in the heating system
we advise you to integrate a dirt filter in the
return circuit. When connecting the heating
boiler to an existing heating system, this dirt
filter must be installed.
