3 Preparation
Installation manual
5
EHBH/X04+08DA
Daikin Altherma – Low temperature split
4P495266-1 – 2017.06
If the total refrigerant charge in the system is <1.84 kg (i.e. if the piping length is <27 m)
, there are no additional minimum floor area
requirements.
If the total refrigerant charge in the system is ≥1.84 kg (i.e. if the piping length is ≥27 m)
, you need to comply with additional minimum
floor area requirements as described in the following flow chart:
Input from installer:
▪ Total refrigerant charge (m
c
) (kg)
▪ Installation height (H) (m)
▪ Area of room A (A
room A
) (m
2
)
Start
Use table 1 in chapter "Technical data" to
calculate the maximum refrigerant charge
(m
max
) (kg) allowed for room A.
Contact your dealer.
Use table 3 in chapter "Technical data" and
dm to calculate the minimum opening area for
natural ventilation between room A and
room B
(VA
min
)
(cm
2
).
Unit can be installed at
room A
if:
▪ 2 ventilation openings (permanently open) are provided between room A and B, 1 at the top and 1 at the bottom.
▪
Bottom opening:
The bottom opening must meet the minimum area requirements (VA
min
). It must be as close as possible to the floor and lower than H. If the
ventilation opening starts from the floor, the height must be ≥20 mm. The bottom of the opening must be situated ≤100 mm from the floor. At least 50% of the
required opening area must be situated <200 mm from the floor. The entire area of the opening must be situated <300 mm from the floor.
▪
Top opening:
The area of the top opening must be larger than or equal to the bottom opening. The bottom of the top opening must be situated at least 1.5 m
above the top of the bottom opening.
▪ Ventilation openings to the outside are NOT considered suitable ventilation openings (the user can block them when it is cold). For ventilation opening
requirements, see "Ventilation opening requirements" in the chapter "Technical data".
The unit can be installed in room A at the
specified installation height, and without
further room size or ventilation requirements.
Determine the refrigerant amount that exceeds
m
max
(dm) (kg). (dm=m
c
–m
max
)
m
max
≥m
c
?
Yes
No
No
Use table 2 in chapter "Technical data" to
calculate the total minimum floor area
(A
min total
) (m
2
)
required for the total refrigerant
charge (m
c
) at the selected installation height
(H).
A
min total
≤A
room A
+A
room B
?
Yes
Input from installer:
▪ Area of adjacent room B (A
room B
) (m
2
)
Use the following tables to calculate the needed values to make sure
that your appliance is installed correctly:
▪
"8.3 Table 1 – Maximum refrigerant charge allowed in a room:
indoor unit" on page 26
▪
"8.4 Table 2 – Minimum floor area: indoor unit" on page 26
▪
"8.5 Table 3 – Minimum venting opening area for natural
ventilation: indoor unit" on page 26
.
A
a
B
≥1.5 m
a
Indoor unit
A
Room where the indoor unit is installed.
B
Room adjacent to room A.
