Johnson Controls VRF System Engineering Manual page 41

Identifying Indoor Units Installed for a Side-by-Side Operation
Turn OFF the power supply completely before setting the DIP switch for the IR receiver kit.
Not doing so may cause an electric shock.
When two indoor units are installed side by side, the
commands from the wireless controller may be received
by both indoor units. The function, "Identifying of Indoor
Units Installed Side by Side" enables operation of the
individual unit correctly without interfering with the
other unit's operation. As shown in the figure at the
right, the indoor units of A and B are set side by side. In
this instance, unit B is set as "Identifying Indoor Units
Installed Side by Side".
[ Setting of Identification of Indoor Units Installed Side by Side ]
IR Receiver Kit Setting
1
Set the Number 2 pin of the IR receiver kit DIP switch (DSW1) at the "Identified" Unit B "ON" side.
Wireless Controller
2
Set the wireless controller according to the Installation and Maintenance Manual for the Wireless
Controller.
[ Cancellation of Identification of Indoor Units Installed Side by Side ]
IR Receiver Kit Setting
1
Set the Number 2 pin of the IR receiver kit DIP switch (DSW1) "OFF" side for cancellation.
Wireless Controller
2
Cancel the wireless controller setting according to the Installation and Maintenance Manual for the
Wireless Controller.
Simultaneous Operation
Up to 16 indoor units can be simultaneously
controlled using one wireless controller.
When multiple indoor units are installed in a large
room, all the indoor units can be controlled to start/
stop with only one wireless controller.
NOTE:
Do not apply a simultaneous operation for indoor
units installed separately in different rooms.
Some units may be left without turning OFF the
power supply.
[ Installation of IR Receiver Kit ]
In an instance of simultaneous operation of multiple (up to 16 ) indoor units by the wireless controller, install
the IR receiver kit only to the unit to be operated. Other units should be standard units without the IR
receiver kit. If multiple IR receiver kits are required to be installed, two IR receiver kits are the maximum.
Indoor Unit
with Receiver Kit
Wireless
Controller
TC-16002-rev.1
Communication Cable
between
Indoor Units
Standard Standard
Indoor Unit Indoor Unit
Should be Standard Indoor Units
Indoor
Unit A
IR Receiver
Kit A
"A"
Control Example of Simultaneous
Operation of Multiple Units
Standard Indoor Unit or
Indoor Unit with Receiver Kit
Available to Install Receiver Kit
OPTIONAL PARTS
"Identified"
Indoor Unit
Indoor
Unit B
IR Receiver
Kit B
"B"
"Identified"
Wireless Controller
Indoor Unit
(Address setting
is required.)
Wireless Controller
3-13