Installation manual

20
2.2.6
2.2.6 Air duct hose set for air-to-water heat pumps (indoor installation)
Flexible hoses are offered as accessories for the air circuit for the
air-to-water heat pumps LI 11TE and LI 16TE. The air duct hose
set is suitable for use in rooms with low temperatures and low
humidity. It contains a 5m length of thermally-insulated and
sound-insulated air hose which can be used for both the air
intake and the air outlet side. Air intake and air outlet can take
place via a light well or a rain guard. Installation material for
connection 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 a 90° air deflection on
either the air intake or the air outlet side.
Table 2.1: Dimensions of the air duct hose set
Fig. 2.6: Air duct hose set
2.2.7 GRC air ducts for air-to-water heat pumps (indoor installation)
The glass fibre reinforced concrete air ducts offered as
accessories are moisture-resistant and diffusion-free. They are
supplied in each respective cross section as 90° bends and as
625 mm and 1,250mm extensions.
The formation of condensate is avoided due to the internal
insulation consisting of mineral wool and foil-clad glass fibre mat,
resulting in a clear reduction in sound transmissions. The ends
are fitted with zinc-plated pressed steel frames.
The ducts can be painted with standard emulsion paint according
to need.
Minor damage to the outer surface has no affect on the efficiency
and can be repaired with standard plaster.
Fig. 2.7: Air-to-water heat pumps with GRC air ducts and built-under buffer
tank
Dimensions in
mm
DN 500 DN 630
A
560 652
B
585 670
ØC
495 625
D
100 100
Scope of supply
1) Heat pump
connecting stubs
2) Hexagon bolt
3) Connection clamp
4) Hexagon bolt
5) Perforated steel ribbon
6) Dowel
7) Connecting hose with
insulation thickness of 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
'UDLQ &RQGHQVDWHRXWIORZ
2SHUDWLQJVLGH
,QVXODWLQJVWULS
'LUHFWLRQRIDLUIORZ
%XIIHUWDQN
0LQURRPKHLJKW&
'HYLFHKHLJKW+
6XSSRUWLQJIHHWDSSUR[
,QVXODWLQJVWULSDSSUR[

PD[
%
$