Daikin EKHWET90B V3 Series Installation Manual page 7

PATTERN 2
PATTERN 2: Conditions ventilation openings
If you want to take advantage of the floor area of the adjacent room, you must provide 2 openings (one at the bottom, one at the top) between the rooms to
ensure natural ventilation. The openings must comply with the following conditions:
▪ Bottom opening (A ):
nv
▪ Must be a permanent opening that cannot be closed.
▪ Must be completely located between 0 and 300 mm from the floor.
▪ Must be ≥A (minimum bottom opening area).
nv-min
▪ ≥50% of the required opening area A
▪ The bottom of the opening must be ≤100 mm from the floor.
▪ If the opening starts from the floor, the height of the opening must be ≥20 mm.
▪ Top opening:
▪ Must be a permanent opening that cannot be closed.
▪ Must be ≥50% of A (minimum bottom opening area).
nv-min
▪ Must be ≥1.5 m from the floor.
Start PATTERN 2
Calculate the total floor area.
(A = A
total roomA
See table 1:
Is the total floor area
(Atotal) large enough for the given refrigerant
charge and the given
release height?
No
You CANNOT install the unit in the room.
Place unit in a larger room or higher position
(see table 2 to select adequate release height)
EKHWET90+120B
R32 Split series – Domestic hot water tank
4P680074-1C – 2022.11
must be ≤200 mm from the floor.
nv-min
+A )
roomB
Yes
A , A
nv nv-min
See table 4: Look up the minimum bottom opening area for natural
ventilation with the adjacent room (A
the given floor area of room A (A
roomA
given release height (H1).
Is it practically feasible to
create ventilation openings that comply
with A and with the "Conditions ventilation
nv-min
openings" on previous page)?
No
2a
You can install the unit in room A if you create ventilation
openings.
Ventilation openings must comply with A
"Conditions ventilation openings" on previous page).
A
4 Unit installation
A
Min. 50%
of A
nv-min
A (≥A
nv nv-min
) for the given refrigerant charge,
nv-min
) [! NOT room A + room B !] and the
Yes
and with
nv-min
B
Min. 50%
of A
nv-min
A (≥A )
nv nv-min
Installation manual
B
)
7