Operating instructions

26
2. Install the safety assembly provided:
Either to the on-site line in the heating
water return
or
To the connection set primary circuit/
secondary circuit (accessories)
Connection set installation
instructions
3. Fill and vent secondary circuit.
4. Thermally insulate pipes inside the
building.
Note
■ In underfloor heating circuits, integrate
a temperature limiter on site for limiting
the maximum temperature of under-
floor heating systems.
■ Safeguard minimum flow rate, e.g.
with overflow valve (see Specification
on page 141).
■ Equip the secondary circuit on site with
an expansion vessel.
Connecting the solar circuit
Connect the solar circuit on site.
Electrical connections
For further information, an overview of
the electrical connections and more
details regarding the PCBs, see
page 119 onwards.
Danger
Damaged cable insulation can
cause injury and damage to the
appliance.
Route cables so that they cannot
touch very hot, vibrating or sharp-
edged components.
Danger
Incorrectly routed wiring can lead
to serious injury from electrical
current and result in equipment
damage.
■ Route 230 V cables and LV
cables separately.
■ Strip the insulation from the
cables as close to the terminals
as possible, and bundle tightly
to the associated terminals.
■ Secure cables with cable ties.
This ensures that, in case of fail-
ure, for example when detaching
a wire, the wires cannot drift into
the adjacent voltage area.
Installation sequence
Hydraulic connections
(cont.)
5441 603 GB