22
Requirements for the installation room
Danger
Dust, gases and vapours can be damaging to
health and trigger explosions.
Prevent dust, gases and vapours in the installa-
tion room.
Danger
The leakage of flammable refrigerant (R32)
presents a fire hazard in rooms with insufficient
air supply.
■
Observe minimum room area.
■
Ensure adequate ventilation.
■
Do not operate any ignition sources in the
installation room, e.g. open flue heat genera-
tor, naked flames, switched-on gas appliance,
electric heater, etc.
Do not smoke in the installation room.
■
Electrical equipment located at a distance of
1 m around refrigerant-carrying parts of the
system must meet the requirements for areas
at risk of explosion, zone 2.
!
Please note
An unfavourable room climate can lead to mal-
functions and appliance damage.
■
The installation room must be dry and free
from the risk of frost.
■
Max. 70 % relative humidity (corresponds to
an absolute humidity of approx. 25 g water
vapour/kg dry air)
■
Ambient temperatures
Wall mounted indoor unit: 5 to 35 °C
Indoor unit with integral DHW cylinder: 0 to
35 °C
Minimum room area in combination with refriger-
ant R32
The minimum room area of 3 m
2
must be strictly
adhered to.
■
The minimum room area can be calculated as part of
a room network.
■
If refrigerant is topped up due to a longer refrigerant
line, it is not necessary to adjust the minimum room
area.
■
The max. refrigerant charge must not exceed
1850 g.
Minimum room volume (to EN 378) in combination
with refrigerant R410A
Taking into account the type and amount of refrigerant
used; a minimum room volume of 5.7 m
3
is required.
Where line lengths are > 10 m, add extra refrigerant.
The minimum room volume must be recalculated for
the entire refrigerant charge.
According to EN 378, the minimum volume of the
installation room depends on the refrigerant charge
and composition.
V
min
=
m
max
G
V
min
Minimum room volume in m
3
m
max
Maximum refrigerant charge in kg
G Practical limit to EN 378, subject to the composi-
tion of the refrigerant
For R410A: 0.44 kg/m
3
Note
If several heat pumps are to be installed in one room,
the minimum room volume must be calculated accord-
ing to the appliance with the greatest refrigerant
charge.
Minimum clearances
In conjunction with refrigerant R32:
The minimum room area must be observed in addition
to the minimum clearances.
Installation sequence
Installing the indoor unit (cont.)
6199585
Installation
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