13
Preparing connections on the primary side
Natural heat source
Geothermal energy – brine heat
transfer medium
Geothermal energy – water heat
transfer medium
Solar thermal
■
We recommend that you use the
brine connection set (accessories).
■
Equip the primary circuit with an
expansion vessel and safety valve
(in accordance with DIN 4757 and
technical guides).
■
If prescribed by the relevant au-
thorities, equip the primary circuit
with a pressure switch or frost stat.
!
Please note
The heat transfer medium
can corrode zinc-plated
pipes.
The components used must
be resistant to the heat
transfer medium.
■
We recommend that you use the
brine connection set (accesso-
ries).
■
Equip the primary circuit with an
expansion vessel and safety
valve (in accordance with
DIN 4757 and technical guides).
■
Route the primary circuit such
that it is protected from frost.
■
If prescribed by the relevant au-
thorities, equip the primary circuit
with a frost stat.
Note
■
The expansion vessel must be
approved to DIN 4807.
■
The primary pump is integrated in
the appliance.
With a combi cylinder:
■
In conjunction with Vitocell 340-M
for simultaneous DHW heating,
the brine connection set (accesso-
ries) is not required.
■
We recommend installing shut-off
valves in the primary circuit, so
that the combi cylinder need not
be drained completely when re-
placing components.
Observe mixing valve instal-
lation instructions.
Note
■
The expansion vessel must be ap-
proved to DIN 4807. Diaphragms
of the expansion vessel and safety
valve must be suitable for the heat
transfer medium.
■
Discharge and drain pipes must
terminate in a container that can
hold the maximum possible expan-
sion volume of the heat transfer
medium.
■
The primary pump is integrated in
the appliance.
Note
■
If the Vitosorp is used for DHW
heating, the primary circuit is pro-
tected by means of the heating cir-
cuit expansion vessel and safety
valve. The primary circuit does not
need a separate expansion vessel
or safety valve.
■
The primary pump is integrated in
the appliance.
With a dual mode DHW cylinder
and a primary thermal store:
■
Both the dual mode DHW cylinder
and the primary thermal store are
heated with the help of the solar
collectors. A diverter valve is re-
quired for changeover between the
two cylinders. This is included in
the "solar thermal cylinder pack"
(accessories).
Note
Install safety equipment (expansion
vessel and safety valve), pressure
gauge and drain & fill valves in the
Vitosorp primary circuit.
Preparing for installation
Installation preparations
(cont.)
5678 044 GB
Installation
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
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