Making The Heating Circuit Connection; Connecting The Flow; Installing The Safety Assembly (On Site) - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

6.5

Making the heating circuit connection

NOTICE: System damage due to leaking
connections!
B Install all lines free from stress to the boiler
connections.
B Use new gaskets if fittings need to be
undone.
B Only tighten flanges on the heating flow
and return after the connections have been
made.
B Before installing the pipe connections,
check connections and gaskets on the
boiler for possible damage.
Boiler flow (VK)
Boiler return (RK)
DN80 PN6 standard flange EN1092
Tab. 8 Water connection dimensions
6.5.1

Connecting the flow

B Insert a gasket between the flange on the boiler and the
threaded mating flange on the flow.
B Secure the flange connection with 4 screws, washers
and nuts.
Fig. 13 Fitting the flow (VK)
Logano plus GB402 - Subject to technical modifications!
6.5.2

Installing the safety assembly (on site)

NOTICE: System damage through incorrect
installation.
B Always fit a safety valve and the automatic
air vent valve or the safety assembly to the
flow.
The safety assembly (accessory) comprises
an automatic air vent valve and a pressure
gauge. As an option, it may be converted for
use with a safety valve (additional accessory)
and a fitting manifold for the maximum
pressure limiter.
If these accessories are not used, a safety
valve, pressure gauge and an automatic air
vent valve must generally be installed in the
flow, upstream of the first shut-off valve.
B Seal in distributor [2] at flow connector [1] using a
suitable sealant.
B Remove the union at the cap valve fitting [3].
B Fit union with gasket to connector of fitting manifold [4]
and secure to the cap valve on the distributor.
B Level the fitting manifold and fit maximum pressure
limiter [5].
Fig. 14 Installing the fitting manifold
1 Flow connector
2 Distributor
3 Cap valve
4 Fitting manifold complete with cap valve ¾ Inch
5 Maximum pressure limiter
6
Installation
21