Flue Pipe Sealing Collar For Positive Pressure Flue (Pressure At Boiler Outlet > 0 Mbar); Fitting The Water Connections; Connecting The Central Heating Flow And Return - Buderus Logano G225 Installation And Service Instructions Manual

6.1.2 Flue pipe sealing collar for positive pressure flue (pressure at boiler outlet > 0 mbar)
The overpressure-tight flue pipe sealing collar
(accessories, part no. 535 4404) must be fitted.
V Slide the flue pipe sealing collar [3] and two jubilee
clips [2] over the flue pipe [4].
V Push flue pipe [4] and flue pipe sealing collar [3] onto
the boiler flue outlet [1].
V Tighten jubilee clips [2].
6.2

Fitting the water connections

Caution: Risk of system damage from
leaking connections.
V Fit the connecting pipes to the boiler in
such a way that they are not under stress.
Caution: Risk of system damage due to lack
of water.
The boiler requires a minimum pressure
switch to protect it against lack of water. You
can obtain this as an accessory.
V Observe the installation instructions for
the accessory.
6.2.1 Connecting the central heating flow and
return
We recommend fitting a dirt filter (option) to
the central heating return to prevent
contamination of the boiler by the water.
V Connect central heating return to connection RK.
V Connect the central heating flow to connection VK.
Logano G225/Logano plus GB225 - We reserve the right to make any changes due to technical modifications.
2
1 3 4
Fig. 54 Making the flue pipe sealing collar
1 Flue outlet
2 Jubilee clip
3 Flue pipe sealing collar
4 Flue pipe
Fig. 55 Connecting the central heating flow and return
Key to fig. 55 - 58:
VSL: Flow safety line
VK: Boiler flow
RK: Boiler return
VS: DHW cylinder flow
RS: DHW cylinder return
EL: Drain
Installing the boiler
2
3
6 720 615 876-54.1RS
VK
RK
6 720 615 876-55.1RS
6
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