29
Note
■
In underfloor heating circuits, install a temperature
limiter to restrict the maximum temperature for
underfloor heating systems: See page 36.
■
Ensure the minimum flow rate, e.g. by means of an
overflow valve: See "Specification" on page 138.
Only type AWB(-M)-E-AC: Connecting the cooling circuit
For area cooling systems (e.g. underfloor heating cir-
cuit, chilled ceiling), a contact humidistat (accessories)
is required.
Requirements for the contact humidistat:
■
Electrical connection, subject to the type of contact
humidistat:
–
230 V~, 0.5 A:
Connection to X3.8/3.9
–
24 V
–
:
Connection to F11
■
Installation inside the room to be cooled at the cool-
ing water flow (remove thermal insulation if required)
■
If several rooms with different relative humidity levels
are part of the cooling circuit, fit and connect several
contact humidistats in series:
Switching contacts as N/C contacts
Electrical connection
Preparing the electrical connections
Cables
■
For cable lengths and cable cross-sections, see the
following tables.
■
For accessories:
Cables with the required number of cores for exter-
nal connections.
Prepare an on-site distribution box.
Note
Make all connections on the control panel (see
page 34) with
flexible
cables to ensure that it can be
placed in the service position (see page 78).
Danger
Damaged wiring insulation wiring can lead to
serious injury from electrical current and result in
appliance damage.
Route cables so that they cannot touch very hot,
vibrating or sharp-edged components.
Danger
Incorrect wiring can lead to serious injury from
electrical current and result in appliance dam-
age.
Take the following measures to prevent drifting
of wires 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 as possible to the terminals
and bundle tightly to the corresponding termi-
nals.
■
If 2 components are connected to the same
terminal, press both cores together in a
single
wire ferrule.
Installation sequence
Connecting the secondary circuit
(cont.)
5790 931 GB
Installation
