Enhanced Usability - Daikin VRV - WII Service Manual

SiUS30-604
1.4

Enhanced usability

A variety of functions that realize easy installation
and improve reliability
• Features a pump interlock function that
controls the pump of the heat source
simultaneously with the starting of the
VRV-WII unit. This significantly
simplifies operation and management.
• Employs DIII-NET to enable the shared
use of the wiring between the indoor
units, the VRV-WII unit and the central
control wiring.
• Provides an auto address setting
function and check function that detects
connection errors in wiring and piping
for easier installation.
• Water piping goes only to the VRV-WII
unit, with refrigerant piping run in
occupied spaces, making the system
ideal for installing in spaces such as OA
rooms, with no worry of water leakage
or corrosion.
Centralized interlocking function
Centralized interlocking input is
possible using an external control
adaptor (DTA104A62).
By using one external control
adaptor circuit board,
centralized interlocking input
to multiple units within the
same water system is possible.
General Information
Easily responds to simultaneous heating
and cooling needs.
By adding suction gas piping and a BS unit (sold
separately), simultaneous heating and cooling
operation can be provided by a single system.
Standard system
(heating and cooling switching operation)
VRV-WII unit
Indoor unit
Simultaneous heating
and cooling operation system
VRV-WII unit
BS unit
Indoor unit
(Heating)
Interlocking
Control wiring
(external-to-external
transmission wiring)
BS unit
Exhaust gas piping
Liquid piping
Indoor unit Indoor unit
By adding suction gas piping and a BS unit...
Exhaust gas piping
Suction gas piping
Liquid piping
BS unit
Indoor unit Indoor unit
(Cooling) (Cooling only)
Energy saving heat recovery operation!
DTA104A62
Features
7