5.3.3
Distance between modules
1 Outdoor unit
2 Indoor module
Allow a refrigeration connection of at least 2 m by making one or two
horizontal loops in order to lessen these disruptions. If the refrigeration
connection between the outdoor unit and the indoor module is less than
2 m, the following disruptions may occur:
Functional disruptions caused by a fluid overload
Noise pollution caused by the circulation of the refrigerant
Respect the minimum curve radii of 100 to 150 mm.
To ensure that the heat pump functions correctly, respect the minimum
and maximum connection lengths between the indoor module and the
outdoor unit.
Tab.16
Outdoor unit
AWHP 4.5 MR AWHP 6 MR-3
AWHP 8 MR-2
AWHP 11 MR-2 AWHP 11 TR-2
AWHP 16 MR-2 AWHP 16 TR-2
A:
Maximum/mini
mum length
2 to 30 m
2 to 40 m
2 to 75 m
2 to 75 m
2 to 75 m
2 to 75 m
B:
Maximum height
difference
30 m
30 m
30 m
30 m
30 m
30 m
C:
Maximum num
ber of elbows
10
15
15
15
15
15
5.3.4
Installing the outdoor unit on the ground
When mounting on the ground, a concrete base must be installed, with no
rigid connection to the building served to avoid the transmission of vibra
tions.
The data plate must be accessible at all times.
1. Dig a run-off channel with a pebble bed.
2. Install a concrete base frame with a minimum height of 200 mm ca
pable of bearing the weight of the outdoor unit.
3. Install the outdoor unit on the concrete base frame.
Installation in cold and snowy regions
Wind and snow may significantly impair the performance of the heat
pump. Ensure that the following information is respected to install the out
door unit correctly.
Always install the outdoor unit sufficiently high off the ground to allow
correct condensates discharge.
The width of the base must not exceed the width of the outdoor unit.
Icing may lead to it breaking (refrigerant fluid leak).
The height of the base frame must be higher than the height of the
heaviest snowfalls. This measure helps to protect the exchanger from
snow and prevent the formation of ice during the defrosting operation.
For regions where heavy snowfalls occur, raise the above-ground pro
tection by at least 200 mm compared with the average depth of the cov
ering of snow.
Fig.19
Diagram of distances between mod
ules
MW-M001439-2
A
B
2
1
C
Fig.20
MW-M001452-3
200
2
1
3
5 Before installation
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AWHP-2 iMPI
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