Daikin Altherma 3 R ECH2O - Opening and Closing the Unit; To Open the Indoor Unit

4 Unit installation
Installation manual
15
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH₂O
4P663483-1A – 2021.11
PATTERN 4
PATTERN 4 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.
A
nv
(≥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
4.3kg, use the row of 4.4kg.
Total refrigerant charge (kg) A
nv-min
(dm²)
3.8 9.9
4 10.1
4.2 10.4
4.4 10.6
4.6 10.9
4.8 11.1
5 11.3
5.2 11.5
5.4 11.8
Total refrigerant charge (kg) A
nv-min
(dm²)
5.6 12.0
5.8 12.2
4.2 Opening and closing the unit
4.2.1 To open the indoor unit
NOTICE
The top cover can only be removed if the switch box is
lowered.
Overview
a
b
a User interface panel
b Switch box cover
Open
1 Remove the user interface panel. Open the hinges at the top
and slide the interface panel downwards.
2
1
2 Remove the switch box cover.
NOTICE
Do NOT damage or remove the foam sealing of the switch
box.