Buderus GB162-65 Installation Instructions Manual page 11

Logamax plus GB162-65 with pump group
UPS 25-80 with non-return valve
Logamax plus GB162-65 with pump group
UPS 25-80 without non-return valve
Logamax plus GB162-65 with pump group
UPER 25-80 with non-return valve
Logamax plus GB162-65 with pump group
UPER 25-80 without non-return valve
Logamax plus GB162-80 with pump group
UPS 25-80 with non-return valve
Logamax plus GB162-80 with pump group
UPS 25-80 without non-return valve
Logamax plus GB162-80 with pump group
UPER 25-80 with non-return valve
Logamax plus GB162-80 with pump group
UPER 25-80 without non-return valve
Logamax plus GB162-100 with pump group
UPS 25-80 with non-return valve
Logamax plus GB162-100 with pump group
UPS 25-80 without non-return valve
Logamax plus GB162-100 with pump group
UPER 25-80 with non-return valve
Logamax plus GB162-100 with pump group
UPER 25-80 without non-return valve
Table 3 Residual head downstream of pump group with a single-boiler system
1) Switch required
 Install a shut-off valve for filter cleaning immediately
upstream and downstream of the dirt filter.
NOTE
When using plastic pipework in the heating
system, e.g. for underfloor heating, it has to
be oxygen diffusion tight. If this pipework
does not comply with the relevant
standards, a heat exchanger must be
integrated to separate the systems.
Installing the differential pressure controller
In situations where there is no low less header, installing
a by-pass valve with a differential pressure controller
would be required.
If a low less header is present, it may be required -
depending on the situation - to install a differential
pressure controller to the secondary side of the open
manifold. This serves to protect the secondary pump
against overheating as a result of insufficient flow.
Installing the drain cock
Since the isolating valve for the return circuit already has
an integrated filling and drain valve, fitting a drain valve
is not necessary.
Installing the non-return valve
Since the isolating valve for the return circuit (blue)
already has an integrated non-return valve, fitting a
non-return valve in the return circuit is not necessary.
pump group Logamax plus GB162-65/80/100 - Subject to modifications resulting from technical improvements!
Residual head [mbar] with minimum required volume flow [l/h] with T [K]
1)
375
1)
375
153
259
1)
219
1)
1)
1)
1)
Installation
3000
3000
3000
3000
3600
3600
3600
3600
4300
4300
4300
4300
5
20
20
20
20
20
20
20
20
20
20
20
20
11