24
Danger
Damaged wiring insulation can lead to serious
injury from electrical current and result in appli-
ance damage.
Route cables so that they cannot come into con-
tact with very hot, vibrating or sharp-edged com-
ponents.
Danger
Incorrect wiring can lead to serious injury from
electrical current and result in appliance dam-
age.
Take the following measures to prevent wires
drifting into the adjacent voltage area:
■
Route LV leads < 42 V separately from cables
>
42 V/230 V~/400 V~ and secure with cable
ties.
■
Only strip the minimum of insulation from
cables, as close to the terminals as possible,
and bundle them close to the corresponding
terminals.
■
Secure cables with cable ties.
Danger
The absence of system component earthing can
lead to serious injury from electrical current and
component damage in the event of an electrical
fault.
The appliance and pipework must be connected
to the equipotential bonding of the building.
Connection to the process control unit
One of the following components must be connected to plug
fS
:
Natural heat source
Geothermal energy – brine heat
transfer medium
Geothermal energy – water heat
transfer medium
Solar thermal
■
Primary circuit pressure switch
and/or primary circuit frost stat
or
■
Jumper supplied
■
Primary circuit frost stat
or
■
Jumper supplied
■
Jumper supplied
Connecting a primary circuit pressure switch and/or
frost stat
Fig. 13
Note
If multiple limiters need to be installed, connect them in
series.
Connecting the jumper supplied
Fig. 14
Installation sequence
Electrical connections
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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