Troubleshooting Guide

8.�WIRING DIAGRAM
Recommended Wire Size
14
Model
(Btu/h)
Power
Supply
ELB
Power
Source
Cable Size
Transmitting
Cable Size
Thermostat
Signal Size
Fuse or Circuit
Breaker (A)
Rated
Current (A)
Nominal
Sensitive
Current
(mA)
24K~60K
208/230V
~/60Hz
15 30
3×16AWG 5×16AWG
15
5×18AWG/
Max. Running Current (A): REFER TO NAMEPLATE
NOTE:
1. Follow local codes and regulations when selecting field wires, and all the above are the minimum wire size.
2. When transmitting cable is longer than 262ft. (80m), a larger wire size should be selected.
3. Install main switch and ELB for each system separately. Select the high response type ELB that is acted within0.1
second.
4. If auxiliary heater is required and already installed on indoor unit, power source cable should be installed separately
and the size should be selected in accordance with UL.
6×18AWG
8.3 Common Wiring
Wiring Diagram
L1 L2 PE
Power SupplyPower Supply
Thermostat
Indoor Unit Outdoor Unit
Power
Terminal
Panel
(L1)
(L2)
( )
W1
B
C
R
Y
G
C B Y W SI
G
R
C
W1
SI
NOTE:
(1) Donotconnectdashedlinewhenelectric
heaterisnotused.
(2) Wiringmustbeperformedaccordingtowiringdiagramthatpastedonindoorunit.
(3) The SI wire between the indoor and outdoor units is not indispensable, especially when the outdoor unit is connected to
an indoor unit of a different brand. It is more energy-saving when the outdoor unit is connected to an indoor unit of the
same brand by SI wire. However, it still can run without it.
(4) Since the thermostat is locally provided, the terminal block in the diagram may differ from the actual one. The letter Y is
the same as Y1.