Wolf CGB-2 Series, Installation Instructions For Contractors

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22 3064810_201804
11. Installation
Heating circuit
We recommend installing a maintenance valve in both the heating flow and heating return – angled design for concealed installa -
tion, straight design for surface mounting.
The return line to the appliance must have a dirt trap. A sludge separator with magnetite separator should be
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.
Please
note
Fig:
Angle maintenance valve, with
BDF valve (accessories)
Fig:
Angle maintenance valve with
connection for safety valve, with
BDF valve (accessories)
Fig:
Straight-through maintenance
valve, with BDF valve (acces-
sories)
Fig:
Straight-through maintenance
valve with connection for safety
valve, with BDF valve (acces-
sories)
Heating circuit safety valve
Install the safety valve marked "H", max. 3 bar.
Fig: Heating circuit safety valve (accessory)
Fig: Cold water connection to DIN 1988
Cold water and DHW connection
A maintenance valve must be installed in the cold water
supply line.
We recommend installing a maintenance valve into 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 in accordance with Wolf accessories.
If mixer taps are used, provide a centralised pressure reducer.
Observe the regulations of DIN 1988 [Germany] 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)
Seite 14
Bild: Eckwartungshahn, mit KFE-Hahn (Zubehör)
Bild: Eckwartungshahn mit Anschluss für Sicherheitsventil,
mit KFE-Hahn (Zubehör)
Seite 14
Bild: Eckwartungshahn, mit KFE-Hahn (Zubehör)
Bild: Eckwartungshahn mit Anschluss für Sicherheitsventil,
mit KFE-Hahn (Zubehör)
Bild:
Durchgangswartungshahn,
mit KFE-Hahn (Zubehör)
Bild: Durchgangswartungshahn mit
Anschluss für Sicherheitsventil, mit
KFE-Hahn (Zubehör)
Bild:
Durchgangswartungshahn,
mit KFE-Hahn (Zubehör)
Bild: Durchgangswartungshahn mit
Anschluss für Sicherheitsventil, mit
KFE-Hahn (Zubehör)
Bild: Sicherheitsventil Heizkreis (Zubehör)
Safety valve Drain outlet Shut-of
f valve
Press. red. valve Shut-of
f valve
Cold water supply Drinking
water
filter
Press. gauge connect. Drain outlet
Installation on unfinished walls
Installation on finished walls
On boilers that are not used for DHW, seal the
cylinder flow and return connections tightly
with locking cap G¾" (accessories). Install a
safety valve with 3 bar opening pressure on site in
the heating return (see connection kit accessories).
Failure to observe this requirement can result in
material losses on building and equipment due to
uncontrolled water leakage.
Fig: Cylinder flow/return connections
Cylinder return
G¾"
Cylinder flow
G¾"