Daikin EKHWET-BV3, Installer'S Reference Manual

Page: 35 / 120

7 | Unit installation
Installer reference guide
35
E120B
R32 Split series – Domestic hot water tank
4P680077-1A – 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
2.45 3,0 0,7 (*) (*) (*) (*) (*)
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.