IM-KSAIC03-02 Specifications subject to change without notice. 5
Scenario No. 2:
Single Zone Outdoor units 38MBR with approved Ductless indoor
units Cassettes, Ducted and Consoles (for proper combinations
consult the compatibility chart).
• Cassette (sizes 36-48)
• Ducted (sizes 36-48) (*refer to NOTE)
• Console (sizes 36-48)
Installation Steps:
1. Run the interconnecting piping from the indoor to the outdoor using
the indoor piping size.
2. Run the interconnecting wiring from the outdoor unit to the 24V
interface using terminal connections L1, L2, and G. Connect the
wiring for the S1 & S2 outdoor interface to CN8.
3. Run the interconnecting wiring from the 24V interface to the indoor
unit using terminal connections L1, L2, and G. Connect the wiring
for S1 & S2 outdoor interface to CN9.
4. Run the thermostat wiring from the thermostat to the 24V interface
using connections R and C on CN15 and Y, W, G on CN19.
5. Configure the dip switches on the 24V interface accordingly.
NOTES:
Follow the Indoor and Outdoor unit's general installation
instructions.
*For Ducted units, in order to initially setup the static pressure,
the 24V interface must be bridged. Temporarily connect together
the Communication wires S1 and S2 from indoor to outdoor unit
until static pressure settings are complete (see ducted unit
Installation Manual). When static pressure is adjusted, connect S1
and S2 to CN8 and CN9 (see Fig. 21).
On selected indoor units, the Up-Down Swing Louver function as
well as the control to turn off the indoor unit display is available
on the unit’s Wireless Remote controller. The Wi-Fi accessory and
Wired Remote controller is not functional when using the 24V
interface.
Fig. 10 —Wiring Diagram
Power supply
from outdoor
unit disconnect
Two wires are line
voltage and the
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