Daikin VRV-WIII RWEYQ72PTJU Service Manual page 12

Features
Cold climate capability
Because the system is water cooled, the outdoor air temperature does not affect capacity.
Furthermore, water cooling means no defrost operation is required, so rapid starting assures
quick and comfortable heating in the coldest conditions.
Long refrigerant piping length
Within the refrigerant piping system, up to 390 ft of actual piping length and 164 ft of height
difference between the VRV-W
occupied spaces, so there is no worry of water leaking.
If the VRV-WII is above indoor units. 131 ft if the VRV-W
Standard system (Heat Pump type)
VRV-W
Level
difference
between the
VRV-W units:
up to 6.5 ft
• Actual piping length between the VRV-W and
indoor units: up to 390 ft
• Equivalent piping length between the VRV-W
and indoor units: up to 459 ft
• Total piping length between the VRV-W and
indoor units: up to 980 ft
4
Total heating
capacity(%)
100
80
60
-14.7 -12.6 -10.5
and indoor units are possible. Water piping does not enter
is below indoor units.
VRV-W
• Actual length up to condensing
unit branch piping: up to 33 ft
• Equivalent length up to
condensing unit branch piping: up
to 43 ft
-9.5 -8.5 -7.0 -5.0 -3.0
Actual piping length after
up to 130 ft
piping branch:
REFNET Joint
General air cooled air
VRV-W
conditioning system
Outdoor air
temperature
(°CDB)
0.0 3.0 5.0
*Example only.
Water piping
Refrigerant piping
Level difference between
the VRV-W and indoor units:
Up to 164 ft if the VRV-W is above
Up to 130 ft if the VRV-W is below
Level difference
between indoor units:
up to 49 ft
General Information
SiUS30-1301