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DHW 300 - DHW 300+
4
Installation
4.1 Installation location
Installation location criteria:
The domestic hot water heat pump must be installed in a dry
and frost-free room.
Furthermore, installation and air intake is not permitted in
rooms with air which is potentially explosive because of
gases, vapours or dust.
In order to prevent damage to interior walls caused by hu-
midity, good thermal insulation between the room into which
the exhaust air is released and the neighbouring rooms is
recommended.
Condensate drainage (with a siphon) must be provided.
The air taken in may not be excessively contaminated or
contain large amounts of dust.
The load-bearing capacity of the foundation must be suffi-
cient (the weight of the filled domestic hot water heat pump
is approx. 420 kg).
For fault-free operation and for any maintenance and repair
work, minimum clearances of 0.6 m are required on the left and
right of the device (see illustration). The domestic hot water heat
pump can be connected using EPP air ducts NW 160 internal
(optional), which must not exceed a total length of 10 m.
If air ducts are not used, a 90° EPP pipe bend pointing down-
wards on the outlet side can be used for sound optimised opera-
tion (see illustration)
4.2 Installation
Remove the three transport restraint screws (M12 - fixing
the device to the pallet) from the bottom of the pallet.
Remove the pallet and mount the three M12 supporting feet
(in the plastic bag attached to the nipple of the cylinder pipe).
Position the domestic hot water heat pump and align it verti-
cally by adjusting the device feet. Then tighten the counter
nuts on the device feet.
EN-5
5
Assembly
5.1 Connecting the water pipes
The water connections (see scaled diagram (Cap. 1 on pag. II))
are located at the rear of the unit.
NOTE
Circulation pipe
For energy efficiency reasons, a circulation pipe should not be used if
this can be avoided. If a circulation pipe is installed in the domestic hot
water distribution system, a valve or a similar device must be provided as
shut-off facility to avoid unnecessary energy losses. Circulation is
enabled according to use (time or requirement control).
The nominal pipe widths for the on-site sanitary installation must
be determined by taking into account the available water pres-
sure and any pressure drops expected to occur in the pipework.
Technical regulations for domestic water installation are to be ob-
served. The nominal pipe widths for the on-site sanitary installa-
tion must be determined taking into account the building-specific
requirements and the valid directives and regulations. Any nec-
essary safety devices, such as pressure reducing valves, must
be installed according to the specific requirements.
Both rigid and flexible water pipes may be used. Observe the cor-
rosion behaviour of the pipework materials used in order to avoid
corrosion damage (see section Commissioning).
NOTE
Domestic hot water, cold water and circulation connections:
These pipe nipples contain plastic inserts, the purpose of which is to
protect against corrosion (in particular to the pipe nipple flange
surfaces). These plastic inserts remain in their positions after installation.
ATTENTION!
When installing the on-site pipework, ensure that the pipes are not
contaminated (flush pipes before connecting the domestic hot water heat
pump if necessary).
451905.66.01 · FD 9505
www.dimplex.de
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