Final Work; Wrap The Pipework In Adhesive Tape - Bosch LWPS 3 Montage- Und Gebrauchsanweisungen

English
7.2.2 Indoor unit
Two supply cables must be connected to the indoor unit: The
power supply to the heat pump and the control voltage for the
integrated heat pump manager (see Appendix Cap. 3.5 on pag.
XV). (Load: 3~; 1x 5-core; control: 1~; 1x three-core) The VDE di-
rectives and regulations and local conditions must be taken into
account in the design and installation of the cables.
For LWPS 3, LWPS 6, LWPS 9
On these heat pumps, the power supply can be provided by
load distribution using two separate supply cables (2x 1~/N/PE;
230 VAC; 50 Hz). Otherwise, the power supply is always pro-
vided using one cable (3~/N/PE; 400 VAC; 50 Hz).
For LWPS 14
On this heat pump, the power supply can be provided by load
distribution using two separate supply cables (2x 3~/N/PE; 400
VAC; 50 Hz). Otherwise, the power supply is always provided
using one cable (3~/N/PE; 400 VAC; 50 Hz).
NOTE
The positions of the copper link cables in the terminals for the
power supply must be complied with. The copper links may
need to be correctly connected, contrary to the factory
default configuration (see Cap. 3.2 on page XII, Cap. 3.5 on
page XV).
The supply cable for the output section of the heat pump (up to
5-core) is fed from the electricity meter of the heat pump via
the utility blocking contactor (if required) into the heat pump
(see heat pump operating instructions for supply voltage). 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
conductors must be installed in the power supply for the heat
pump (tripping current and characteristic in compliance with
the device information). The connection takes place on X1.
The supply cable (1~L/N/PE~230 V, 50 Hz) for the heat pump
manager must have a continuous voltage. For this reason, it
should be tapped upstream from the utility blocking contactor
or be connected to the household current, because otherwise
important protection functions could be lost during a utility
block. The correct control voltage must be ensured according
to the general information leaflet/rating plate. The connection
takes place on X2.
The utility blocking contactor (K22) with 3 main contacts (1/3/
5 // 2/4/6) and an auxiliary contact (NO contact 13/14) should
be dimensioned according to the heat pump output and must
be supplied by the customer. The NO contact of the utility
blocking contactor (13/14) is looped from terminal strip X3/
GND to connector terminal N1-J7/DI3. CAUTION! Extra-low
voltage!
For detailed instructions on how to connect the external com-
ponents as well as how the heat pump manager functions,
please refer to the device connection diagram and the operat-
ing instructions supplied with the heat pump manager.
The 2nd heat generator is connected with a 6 kW heat output in
factory default. To reduce the output to 4 kW or 2 kW, one or
both of the two copper link cables must be removed from ter-
minal X7 (see circuit diagram).
For detailed information, see circuit diagrams in the attach-
ment.
The electric cables can be fed into the unit from below (in the
refrigeration connection area).
EN-12

7.3 Final work

Once the pipes and electric cables have been connected, the
pipes must be bent and a number of tests carried out. The leak
test must be carried out with particular care, as a refrigerant
leak results in a direct reduction in output.
Leaks are also difficult to identify once the installation is com-
plete.
7.3.1 Pipe bends
Bend the pipe by covering the connection cable and refrigerant
pipe (between the indoor and outdoor unit) with insulation and
fix the insulation in place with two adhesive tapes.
1) Fix the refrigerant pipe, mains cable and connection cable
with adhesive tape from bottom to top. Fix the bound pipe-
work along the wall.
2) Form a siphon to prevent water from entering the chamber
and electrical components.
3) Fix the pipework to the wall using clamps or similar.

Wrap the pipework in adhesive tape

1) Fix the pipes, mains cable and connection cable with adhe-
sive tape from bottom to top. If they are fixed from top to
bottom, rain could enter into the pipes or cables.
2) Fix the bound pipework along the external wall with clamps
or similar.
3) A siphon prevents water from entering the electrics.
Seal small gaps
opening around opening around
around the pipe,
the pipings with the pipings with
e.g. with silicon.
gum type sealer. gum type sealer.
A siphon prevents water from entering the electrics
452162.66.16a · FD 0108
Pipe
Drain hose
Adhesive tape
(not used)
(narrow)
Wrapped in
adhesive tape
(wide)
Drain hose
(not used)
Adhesive tape Klebeband Klebeband
Connection cable
Refrigerant pipes
Mains cable
LWPS 3 - LWPS 14
Adhesive tape
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