Design Technical Manual

Table Of Contents
1-4. CONTROL SYSTEM FEATURES
SIMPLE WIRING SYSTEM
A single transmission line can connect equipment across multiple refrigerant circuits.
Non polar 2-conductor transmission cable.
Central control equipment can be connected anywhere on the transmission line, it is not
necessary to connect the indoor units to each outdoor unit.
-Simplies network installation and start-up
-Reduces the total wiring required
-Helps prevent improper wiring
-Reduces total installation time
LARGE BUILDING APPLICATIONS
A single VRF network can control an entire building using:
- Total transmission wiring length can be extended up to 11,811 ft. (3,600 m). (with signal
amplier unit.)
-Up to 400 indoor units per group
-Up to 100 outdoor units per group
-Touch Panel Controller can be used for primary central control.
-Multiple Touch Panel Controllers may be sued to provide convenient control for multiple
convertor (Refer to 3-1.)
- Can control Fujitsu mini-split and HFI models using a Network Convertor (Refer to 3-1.)
System Controller allows to control up to 4 VRF network systems (Max.1,600 indoor units),
suitable for huge scale application.
RELIABILITY AND EASE OF MAINTENANCE
Stand-alone transmission NETWORK allows for each unit to operate separately; therefore,
an error at one unit does not effect the performance of the remaining units.
When a failure occurs, the error code is displayed on the individual controller and central
controller. (except Wireless Remote Controller)
Error history is stored in each individual controller and in the central controller (except
wireless controller).
System Controller and Web Monitoring Tool allow to monitor operation status in real time via
INTERNET, allowing for a quick evaluation of VRF systems.
Service tool can connect anywhere on the transmission line, allowing building owner to
quickly evaluate the performance of the VRF system.
- (05 - 10) -
CONTROL
SYSTEM
CONTROL
SYSTEM