Technical data
www.dimplex.de 01.2012 | Project planning manual for heat pumps for heating and domestic hot water preparation | 29
Air-to-water heat pumps 2.4.1
Fig. 2.27: Wall installation LI 9, 12TU and LI 15TE
(dimensions of the heat pumps are identical)
Fig. 2.28: Wall installation LIKI 14TE
NOTE
Either a light well or a rain guard should be used for the air outlet to avoid
shorting the air circuit.
ATTENTION!
If air duct dimensions are included in the drawing, the size of the wall
openings must be increased accordingly.
2.4 Air-to-water heat pump in split design
Split heat pumps consist of an outdoor and indoor unit connected
by refrigerant pipes. The outdoor unit contains the compressor,
an evaporator supplied with air and the expansion valve, the in-
door unit contains the liquefier. They are used to transfer the en-
ergy contained in the refrigerant to the heating circuit for heating
and domestic hot water preparation.
Application areas of the split heat pump
-20 °C ... + 35 °C
Availability of outside air as a heat source:
Unlimited
Types of operation:
Mono energy
bivalent (external control of the 2nd heat generator)
Advantages of split heat pumps
Lower development costs for connection to the heat source
outside air
Minimal space requirement, flexible and simple
installation
Low air noise in and on the building
through slow running axial fan
2.4.1 Installation
When installing split heat pumps, various different requirements
must be taken into account with regard to set-up and minimum
space requirements. The refrigerant pipes and electric cables
between the indoor and outdoor unit must be fed through the
building wall. The wall openings described under Chapt. 2.2.3
on page 21 can be used for sealing. They are available as ac-
cessories.
Development costs outdoor unit
Laying electrical connection and mains cables
Laying refrigerant pipes between
indoor and outdoor unit
Wall openings for connecting pipes
Minimum clearances must be observed
(see Fig. 2.29 on page 29)
Follow federal building codes if applicable
Fig. 2.29: Outdoor unit installation
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