Daikin Altherma R Hybrid Installer's Reference Manual page 38

6 | Preparation
Special requirements for R32
If the total refrigerant charge in the system is >1.842 kg, you need to comply with the minimum floor area
requirements as described in the following flow chart. The flow chart uses the following tables:
Maximum refrigerant charge allowed in a room: indoor
4
unit" [ 200] and "15.6 Table 3 – Minimum venting opening area for natural ventilation: indoor
Start
Input from installer:
▪ Total refrigerant charge (m ) (kg)
c
▪ Installation height (H) (m)
▪ 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 at the
specified installation height, 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
≥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".
Installer reference guide
38
INFORMATION
Systems with a total refrigerant charge (m
requirements to the installation room.
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
c
(H).
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
correct outdoor unit.
4
unit" [ 198], "15.5 Table 2 – Minimum floor area: indoor
) (m )
2
room B
) required for the total refrigerant
2
) at the selected installation height
No
A ≤A +A ?
min total room A room B
Yes
–m )
c max
) (cm ). Make sure to select the
2
min
). If the ventilation opening starts from the floor, the height must be
min
"15.4 Table 1 –
unit" [
) ≤1.842 kg are NOT subjected to any
c
CHYHBH
Room A Room B
Room A: Room where CHYHBH is installed.
Room B: Room adjacent to room A.
Contact your dealer.
CHYHBH05+08AF + EHYKOMB33A
Daikin Altherma R Hybrid
4
201].
4P471761-1E – 2020.10