Daikin VRV HXY48TAVJU, Engineering Data

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HXY48TAVJU EDUS392021-F18
3. System Layout
3.1 System Layout
Refrigerant piping
VRV
indoor unit
Total capacity of connected VRV indoor unit
requires at least
50%
of outdoor unit capacity.
Cold water / Hot water
Heat exchange
between refrigerant
and water
Underfloor heating Radiator Ceiling radiator
Low-temperature
hydrobox
The following table indicates the connectable number and capacity range of the low-temperature hydrobox and indoor units.
Please refer the dedicated Engineering Data Book for the specification of respective indoor units.
ton 6 8 10 12 14
Minimum VRV indoor unit number 1
Minimum
VRV
indoor unit capacity ratio 50% or more
Max hydrobox number 1 1 2 2 2
Total indoor capacity ratio range 50-130%
3.2 Connection Ratio
When connecting the low-temperature hydrobox, connect VRV indoor units of its total capacity at least 50% of the outdoor unit capability to prevent
the secondary side water temperature from dropping or freezing during defrosting or ON/OFF of the indoor unit.