4 Unit installation
Installation manual
9
E120B
R32 Split series – Domestic hot water tank
4P680074-1C – 2022.11
A
nv-min
(dm²) – In case of Refrigerant charge=2.6 kg
Release height (m)
Floor area of room A (m²) [! NOT room A + room B !]
2,00
4,00
6,00
8,00
10,00
12,00
14,00
2.65
2,7
0,4
(*)
(*)
(*)
(*)
(*)
PATTERN 3
PATTERN 3 is only allowed for installations in technical rooms (i.e.
room that is NEVER occupied by persons). For this pattern there are
no requirements to the minimum floor area if you provide 2 openings
(one at the bottom, one at the top) between the room and the
outside to ensure natural ventilation. The room must be protected
from frost.
Anv
(≥A
nv-min
)
Min. 50% of A
nv-min
a2
a1
A
A
Unoccupied room where the indoor unit is installed.
Must be protected from frost.
a1
A
nv
:
Bottom opening
for natural ventilation between the
unoccupied room and the outside.
▪ Must be a permanent opening that cannot be closed.
▪ Must be above ground level.
▪ Must be completely located between 0 and 300 mm from
the floor of the unoccupied room.
▪ Must be ≥A
nv-min
(minimum bottom opening area as
specified in the table below).
▪ ≥50% of the required opening area A
nv-min
must be
≤200 mm from the floor of the unoccupied room.
▪ The bottom of the opening must be ≤100 mm from the
floor of the unoccupied room.
▪ If the opening starts from the floor, the height of the
opening must be ≥20 mm.
a2
Top opening
for natural ventilation between room A and
the outside.
▪ Must be a permanent opening that cannot be closed.
▪ Must be ≥50% of A
nv-min
(minimum bottom opening area
as specified in the table below).
▪ Must be ≥1.5 m from the floor of the unoccupied room.
A
nv-min
(minimum bottom opening area for natural ventilation)
The minimum bottom opening area for natural ventilation between
the unoccupied room and the outside depends on the total
refrigerant in the system. For intermediate refrigerant charges, use
the row with the higher value.
Example:
If the refrigerant charge is
2.55 kg, use the row of 2.6 kg.
Total refrigerant charge (kg)
A
nv-min
(dm²)
2.20
7.5
2.30
7.7
2.40
7.9
2.50
8.0
2.60
8.2
4.2
Opening and closing the unit
4.2.1
To open the indoor unit
1
Remove the bottom cover to be able to guide the cables to the
switch box.
6×
2
Remove the top cover.
4×
3
Remove the switch box cover.
4×
4.2.2
To close the indoor unit
1
Reinstall the switch box cover.
2
Reinstall the top cover.
3
Reinstall the bottom cover.
NOTICE
When closing the indoor unit cover, make sure that the
tightening torque does NOT exceed 2.94 N•m.
