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Special requirements for R32 units
Installer and user reference guide
67
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
OTHER FLOORS
Table "Maximum capacity class"
Graph & table "Lowest underground floor" AND table
"Maximum capacity class"
LOWEST UNDERGROUND FLOOR
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180 200
210
220
5
25
30
35
40
45
50
55
60
20
15
10
Lowest underground floor
(a)
m [k
g]
A
min
[m
2
]
65
63.8
189
27
9.1
m (kg)
A
min
(m
2
)
150
50.6
160
54.0
170
57.4
180
60.7
189
63.8
27
9.1
190
63.8
30
10.1
200
63.8
40
13.5
50
16.8
60
20.2
70
23.6
80
27.0
90
30.3
100
33.7
110
37.1
120
40.5
130
43.9
140
47.2
m
Total refrigerant charge limit in the system
A
min
Smallest room area
(a)
Lowest underground floor (=Lowest underground floor)
Step 4
– Use the values on the unit nameplate to determine the total amount of
refrigerant in the system.
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
1000
GWP × kg
=
=
+
kg
=
kg
=
GWP: xxx
R32
Total charge=Factory charge
(a)
+additional charge
(b)
(a)
The factory charge value can be found on the nameplate.
(b)
"19.4 To determine the additional refrigerant amount"
Step 5
– The total indoor capacity connected to a branch pipe port (or pair of
branch pipe ports in case of FXMA200/250)
MUST
be equal or less than the
capacity limit that is derived from the table. Additionally, in case an indoor unit is
