Installing The Heating Flow And Return - Buderus GB162-65 Installation Instructions Manual

5 Installation
 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

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.
 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.
10 pump group Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
fig. 8 Fitting the pump
1
4
5
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)
1
2
2
3
6
7