Mounting The External Temperature Sensor; Installing The Strap-On Sensor; Electrical Connection - Dimplex HWK 332 Econ5S Instructions D'installation Et D'utilisation

7.3.3 Mounting the external temperature
sensor
The temperature sensor must be mounted in such a way that all
weather conditions are taken into consideration and the meas-
ured value is not falsified.
 Mount on the external wall on the north or north-west side
where possible
 Do not install in a "sheltered position" (e.g. in a wall niche or
under a balcony)
 Not in the vicinity of windows, doors, exhaust air vents, ex-
ternal lighting or heat pumps
 Not to be exposed to direct sunlight at any time of year
Sensor lead: Max. length 40 m; min. core cross-section
0.75 mm²; external diameter of the cable 4-8 mm.

7.3.4 Installing the strap-on sensor

It is only necessary to mount the strap-on sensors if they are in-
cluded in the scope of supply of the heat pump but have not yet
been installed.
The strap-on sensors can be fitted as pipe-mounted sensors or
installed in the immersion sleeve of the compact manifold.
Mounting as a pipe-mounted sensor
Remove paint, rust and scale from heating pipe.

 Coat the cleaned surface with heat transfer compound
(apply sparingly).
 Attach the sensor with a hose clip (tighten firmly, as loose
sensors can cause malfunctions) and thermally insulate.
7.3.5 Hydraulic distribution system
The compact manifold and the dual differential pressureless
manifold function as an interface between the heat pump, the
heating distribution system, the buffer tank and, in some cases,
even the hot water cylinder. A compact system is used to simplify
the installation process, so that a lot of different components do
not have to be installed individually. Further information can be
found in the relevant installation instructions.
Compact manifold
The return sensor can remain in the heat pump, or should be in-
stalled in the immersion sleeve. The remaining empty space be-
tween the sensor and the immersion sleeve must be filled com-
pletely with heat transfer compound.
Dual differential pressureless manifold
In order for the heating circuit pumps of the generator and con-
sumer circuits to supply the flow to the return sensor, this must
be installed in the immersion sleeve of the dual differential pres-
sureless manifold.

7.4 Electrical connection

The power supply and control voltage are supplied using stand-
ard cables (load: 3~ 5-core / 1~ 3-core; control 3-core).
For detailed instructions on how to connect the external compo-
nents and how the heat pump manager functions, please refer to
the device electrical documentation.
An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility blocking contactor or power contactor) and an
all-pole circuit breaker with common tripping for all external con-
ductors must be installed in the power supply for the hydro tower
(tripping current in compliance with the device information).
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump man-
ager must have a constant voltage. For this reason, it should be
tapped upstream from the utility blocking contactor or be con-
nected to the household current, as important protection func-
tions could otherwise be lost during a utility block.
The correct control voltage must be ensured according to the
general information leaflet.
On delivery, the second heat generator is connected with a 6 kW
heat output. To reduce the output to 4 kW or 2 kW, one or both
of the two copper link cables must be removed from terminal X7
(see circuit diagram).
For detailed information, see circuit diagrams in the appendix.
The pipe heater (2nd heat generator) must only be connected by
authorised electricians according to the corresponding circuit di-
agram. Regulations of the utility company and national guide-
lines must be observed (VDE).
A cable duct is integrated into the polyurethane foam at the top
of the cylinder (under the upper covering cap) which makes it
possible to lay the electrical cables under the upper cover (from
the rear of the cylinder to the front/connection side).
NOTE
To use the HWK 332 Econ5S, two connecting cables (< 25 V / 230 V) must
be routed between the heat pump managr and the heat pump.
NOTE
Further information on the wiring of the heat pump manager is available
in the electrical documentation.
ATTENTION!
The communication cable is necessary for the function of air-to-water
heat pumps in outdoor installation. It must be shielded and laid
separately from the mains cables. It is connected to N1-J25. For further
information, see electrical documentation
452162.66.10 · FD 9504
HWK 332 Econ5S
EN-7