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7.3 Piping length/additional refrigerant volume
•
The amount of refrigerant put into the outdoor unit at the factory is equivalent to that which fills up 20m length of
refrigerant pipe.
•
If the length of refrigerant pipe is 20m or less, addition of refrigerant at the installation site is unnecessary. If the length
of the pipe exceeds 20m, add the refrigerant R-22.
•
Overcharge or undercharge of refrigerant in the outdoor unit will cause malfunction of the compressor. The prescribed
amount to recharge the unit with refrigerant is shown in the table above.
The permissible amount of refrigerant is the prescribed 50g.
•
For RAV-363A8-PE and RAV-463A8-PE, if the length of pipe exceeds 30m the diameter of the gas pipe must be
increased by one rank (i.e. Ø19.0 to Ø22.2).
5
3.3
2.3
Recharge quantity (kg)
Additional amount of refrigerant
at installation site (kg)
25
0.25
0.25
20
Filled at
factory
Piping length
less than (m)
Model
RAV-463A8-PE
30
4.2
3.2
25
3.95
2.95
20
3.7
2.7
15
3.55
2.55
10
3.45
2.45
RAV-363A8-PE
Filled at
factory
50
5.2
4.2
45
4.95
3.95
40
4.7
3.7
35
4.45
3.45
30
0.5
0.5
50
1.5
1.5
45
1.25
1.25
40
1.0
1.0
35
0.75
0.75
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