Daikin VRV II REYQ8MY1B, Service Manual

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Si39-306 REFNET Pipe System
Appendix 271
6.2 Max. Refrigerant Piping Length
„
Max. Refrigerant Piping Length (Actual Piping Length)
„
Total Extension length
Total Piping length from outdoor unit to all indoor units
≤≤≤≤
300m
„
Max. Level Difference
Notes:
1. Be sure to use a REFNET Piping Kit for the branch of piping.
2. A Branch Part can not be installed to the down flow of the REFNET Header.
3. If the outdoor unit is located under the indoor unit, the level difference is a maximum of 40m.
(V1924)
H
3
H
4
a
Outdoor Unit 1
Outdoor Unit 2
Outdoor Unit 3
First Outdoor Branch
First Branch
c
Indoor Units
Indoor Units
BS Units
BS Units
BS Units
Indoor Units
b b
H
1
H
2
First outdoor Branch ~ Outdoor units
[a]
First Branch ~ Indoor Units
[c]
Outdoor Units ~ Indoor Units
[b+c]
Max. Refrigerant
Piping Length (m) 10m or less than 10m 40m or less than 40m 150m or less than 150m
Outdoor Units ~ Indoor Units
[H
1
]
Between the Indoor Units
[H
2
]
Between the Indoor Units
[H
3
, H
4
]
Max. Level
Difference (m) 50m or less than 50m
Note 3
15m or less than 15m 5m or less than 5m