Daikin Altherma 3 R F Installer's Reference Manual page 61

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 the minimum floor area requirements as described in the following flow chart. The flow chart uses the
following tables: "16.5 Table 1 – Maximum refrigerant charge allowed in a room: indoor
2 – Minimum floor area: indoor
ventilation: indoor unit" [
Start
Input from installer:
▪ Total refrigerant charge (m ) (kg)
c
▪ Area of room A (A ) (m )
2
room A
Use table 1 in chapter "Technical data" to
calculate the maximum refrigerant charge
(m ) (kg) allowed for room A.
max
m ≥m ?
max c
Yes
The unit can be installed in room A, and
without further room size or ventilation
requirements.
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
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).
ERGA04~08EAV3(A) + EHVH04+08SU18+23EA6V
Daikin Altherma 3 R F
4P629090-1 – 2020.08
4
unit" [ 261] and
4
261].
INFORMATION
Systems with a total refrigerant charge (m
m) are NOT subjected to any requirements to the installation room.
INFORMATION
Multiple indoor units. If two or more indoor units are installed in a room, you must
consider the maximum refrigerant charge that can be released in the room when a
SINGLE leak occurs. Example: If two indoor units are installed in the room, each with
its own outdoor unit, then you have to consider the refrigerant charge of the largest
indoor-outdoor combination.
Input from installer:
▪ Area of adjacent room B (A
Use table 2 in chapter "Technical data" to
calculate the total minimum floor area
(A ) (m
min total
charge (m
No
Determine the refrigerant amount that exceeds
m (dm) (kg). (dm=m
max
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
"16.7 Table 3 – Minimum venting opening area for natural
) (m )
2
room B
) required for the total refrigerant
2
).
c
No
A ≤A +A ?
min total room A room B
Yes
–m )
c max
) (cm ).
2
min
). It must be as close as possible to the floor. If the ventilation opening
min
7 Unit installation
|
4
unit" [ 260],
) <1.84 kg (i.e. if the piping length is <27
c
A
a
a Indoor unit
A Room where the indoor unit is installed.
B Room adjacent to room A.
Contact your dealer.
"16.6 Table
B
Installer reference guide
61