Daikin FXFN50A2VEB Installer And User Reference Manual page 53

FXFN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P677925-1 – 2021.07
Example: Total refrigerant charge in the system is 45 kg and room volume is
3
300 m . 45/300=0.15, which is >QLMV (0.074) and <QLAV (0.18), therefore install
at least 1 appropriate measure in the room.
70
65
a
60
55
50
45
40
35
30
25
20
15
10
5
0
0 50 100 150 200 250 300 350
16‒2 Example graph for calculation
A Refrigerant charge
B Room volume
a 2 appropriate measures required
b 1 appropriate measure required
c No measure required
For occupancies on the lowest underground floor of the building
If the total refrigerant charge (kg)
divided by the room volume
<RCL
>RCL and ≤QLMV
>QLMV and <QLAV
>QLAV
(a)
For occupied spaces with a floor area exceeding 250 m
determination of the room volume (Example: even if the room area is 300 m
room height is 2.5 m, calculate the room volume as 250 m
Example: Total refrigerant change in the system is 45 kg and room volume is
3
300 m . 45/300=0.15, which is >RCL (0.072) and <QLAV (0.18), therefore install at
least 2 appropriate measures in the room.
70
65
a
60
55
50
45
40
35
30
25
20
15
10
5
0
0
50 100 150 200 250 300 350
16‒3 Example graph for calculation
A Refrigerant charge limit
B Room volume
a Installation is not allowed
QLAV
b
400 450 500 550 600 650 700 750 800 850 900 950 1000
B (m³)
...the number of appropriate measures
(a) 3
(m ) is... must be at least...
0
1
2
Value CANNOT be exceeded!
QLAV
b c
400 450 500 550 600 650 700 750 800 850 900 950 1000
B (m³)
16 Unit installation
|
QLMV
c
2 2
, use 250 m as the floor area for
2
and the
2 3
×2.5 m=625 m )
QLMV RCL
d
Installer and user reference guide
53