Installation - Wolf FGB-K Series Installation And Maintenance Instructions For Contractors

Heating circuit
We recommend installing a maintenance valve in both the heating flow and heating return – straight design for surface mounting.
The return line to the appliance must have a dirt trap. A sludge separator with magnetite separator should be
Please note
used to protect the appliance and the high efficiency pump from dirt/sludge and magnetite.
Deposits in the heat exchanger may lead to boiling noise, a drop in performance or faults in the appliance.
In wall mounted boilers without DHW heating,
install a short circuiting section (accessories)
between cylinder flow and cylinder return.
Cold water and DHW connection
A maintenance valve must be installed in the cold water
supply line.
If the cold water supply pressure is above the maximum
permissible operating pressure of 10 bar, install a tested and
certified pressure reducer.
If mixer taps are used, provide a centralised pressure reducer.
Observe the regulations of EN 806 as well as those of your
local water supply utility when connecting cold water and
DHW.Your warranty is void if the installation does not comply
with the illustration shown.
Note: When selecting the installation material for the
system, observe engineering standards and take
into account possible electrochemical processes
(mixed installation).
When installing make sure that, according to
EN 1717, a non return valve is installed in the
drinking water pipeline.
18

10. Installation

Fig: Cylinder flow / return connections
Fig: Drinking water installation
Cylinder flow
G½"
Cylinder return
G½"
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