Technical data

24 | Project planning manual for heat pumps for heating and domestic hot water preparation | 01.2012 www.dimplex.de
2.3.5 Air-to-water heat pumps
2.3.5 Air duct hose kit for air-to-water heat pumps
Flexible hoses are offered as accessories for the air circuit for the
air-to-water heat pumps LI 11TES and LI 16TES. The air duct
hose kit is suitable for use in rooms with low temperatures and
low humidity. It contains a 5 m length of thermally-insulated and
sound-insulated air hose which can be used for both the air in-
take and the air outlet side. Air intake and air outlet can take
place via a light well or a rain guard. Installation material for con-
nection to the heat pump and for the wall opening to be insulated
on site is included.
Air hoses have the advantage that they can be individually
adapted on site and are able to simply and quickly compensate
for height and length differences. In addition, air hoses have both
a thermal and sound insulating effect and prevent the room in
which the system is installed from becoming cold. A grid on the
wall connection stubs prevents small animals from entering and
leaves from falling in.
NOTE
The minimum air flow should be checked if there is an air deflection of
more than 90° on the air intake and air outlet side.
Table 2.5: Dimensions of the air duct hose kit
Fig. 2.12: Air duct hose kit
2.3.6 Lightweight cement based fibre glass air ducts for air-to-water heat pumps
(indoor installation)
The diffusion-open and moisture-resistant air ducts are available
pre-assembled or as a construction kit. They are supplied in each
respective cross section as 90° bends and as 1,000 mm (con-
struction kit) and 625 mm or 1250 mm (pre-assembled) exten-
sions.
The mineral wool and laminated glass fiber pad insulation on the
inside helps prevent the formation of condensate and signifi-
cantly reduces sound transmission by ~ 1 dB(A) per running
meter or ~ 2 to 3 dB(A) per bend. The ends are fitted with zinc-
plated pressed steel frames.
The ducts can be painted with standard emulsion paint as de-
sired.
Minor damage to the outer surface has no affect on the efficiency
and can be repaired with standard plaster.
Assembly of a standard installation set-up:
Air ducts can be mounted unshortened if a standard installation
set-up (see Chapt. 2.3.7.1 on page 26) is selected.
The required minimum clearances between the heat pump and
walls should always be observed when positioning the air circuit.
The air ducts or bends are sealed in the wall opening with stand-
ard polyurethane foam in accordance with the dimensions in the
drawing. The ducts are supported at regular intervals from below
or using threaded rods from the ceiling.
NOTE
For solid-borne noise insulation, the air ducts are not screwed directly
onto the heat pump.
Dimensions in mm DN 500 DN 630
A
560 652
B
585 670
C
495 625
D
100 100
Scope of supply
1) Connecting stubs on
the heat pump
2) Hexagon bolt
3) Connection clamp
4) Hexagon bolt
5) Perforated tape
6) Dowel
7) Connection hose
insulation thickness 25 mm
8) Screw
9) Connecting stubs
(wall-mounted)
10) Dowel
Minimum bend radius LUS 11:
300 mm
Minimum bend radius LUS 16:
400 mm
Space requirement for 90° bend:
approx. 1 m