IM-KSAIC03-03 Specifications subject to change without notice.
5
SCENARIO 1: SINGLE ZONE OUTDOOR
UNITS (38MPRA, 38MA*R, 38MHR) WITH
APPROVED DUCTLESS INDOOR UNITS
• High Wall (sizes 9K-36K)[208-230V]**
• Cassette (sizes 9K-24K)
• Ducted (sizes 9K-24K) (*refer to
NOTES
in the adjacent column)
• Console (sizes 18K-24K)
Installation Steps:
1. Run the interconnecting piping from the indoor to the outdoor unit
using the correct indoor piping size.
2. Run the interconnecting wiring from the outdoor unit to the 24V
interface using terminal connections L1, L2, S and G.
3. Run the interconnecting wiring from the 24V interface to the indoor
unit using terminal connections L1, L2, S and G.
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.
6. Configure the thermostat to operate in single stage cooling and heating
scenarios
(DO NOT configure the thermostat as a Heat Pump).
NOTES:
Follow the indoor and outdoor unit's general installation instructions.
*For the Ducted units, in order to initially setup the static pressure, the
24V interface must be bridged. Temporarily connect the
communication wires L1, L2, S and G from the indoor to the outdoor
unit until the static pressure settings are complete (refer to the
Ducted unit installation manual).
On selected indoor units, the Up-Down Swing Louver functions as a
control to turn off the indoor unit display (LED) and is available on
the unit’s wireless remote controller. The Wi-Fi KSAIF and wired
remote controllers KSACN are not functional when using the 24V
interface.
**For 115V Ductless applications, the 24V transformer must be
replaced in the field. This part is available through RCD (part
number 11203103000393).
Fig. 9 — Wiring Diagram
IMPORTANT: All ground wiring must be installed according to the equipment’s installation manual.
CAUTION
The conventional thermostat must be configured for use with a single stage
air conditioner (Y output
ONLY
) and a single stage heating (W) system.
CAUTION
Thermostat
70
Do not
install T1
indoor sensor
Power supply from outdoor unit disconnect.
Two wires are line voltage and the other is a ground wire.
*All ground wiring must be installed
according to the equipment’s installation manual.
*All ground wiring must be installed
according to the equipment
installation manual.
G
BUS BAR
G
G
G
NOTE: Dashed Lines indicate
OPTIONAL COMPONENTS
GROUND