Daikin VRV II RXYQ8MY1K Service Manual page 284

Si39-502A
1. If the piping length between the outdoor unit-connecting pipe kits or between the outdoor
Outdoor Unit - Multi Connection Piping Kit Actual piping length 10m or less, equivalent length 13m or less
Max.allowable
Multi Connection Piping Kit - Indoor Unit
Piping Length
REFNET Joint - Indoor Unit
Outdoor Unit - Outdoor Unit
Allowable Level
Outdoor Unit - Indoor Unit
Difference
Indoor Unit - Indoor Unit
Note:
Refer to page 276 Note 2 in case of up to 90m.
Appendix
Prohibited pattern
to indoor unit
to indoor unit
Change to pattern 1 or pattern 2
Unit A Unit B
to indoor unit
to indoor unit
units exceeds 2 m, create a rise of 200 mm or more in the gas line within a length of 2 m
from the kit.
If 2 m or less
If 2 m or more
Piping between
outdoor units
to indoor
unit
Oil remains in the stopping outdoor unit.
Unit A Unit B
Unit C
to indoor unit
Oil remains in the outdoor unit C when the system stops.
Change as shown in the figure below.
to indoor unit
Piping between outdoor units
to indoor unit
Piping between
outdoor units
2m or less
Rising height:
200 mm or more
2m or less 2m or less
Actual piping length 150m or less, equivalent length 175m or less,
the total extension 510m or less
Actual piping length 40(90)m or less
5m or less
50m or less
(when an outdoor unit is lower than indoor units : 40m or less)
15m or less
Piping Installation Point
Unit C
Rising height:
200 mm or more
2m or less
Rising height:
200 mm or more
2m
or more
Rising height:
200 mm or more
Note
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