5
POWER WIRING
Fig. 4 —Power Input
COMMUNICATION WIRING
Type: 2-core stranded shielded cable
Diameter: AWG 18
Maximum wiring length:
• 3937 ft. between the ductless indoor unit and the DLS
VRF Interface
• 3280 ft. between the touchscreen central controller and
the DLS VRF Interface
• 820 ft. between the wire controller and DLS VRF
Interface
Fig. 5 —Communication Wiring
AUX HEAT SIGNAL INPUT
CN54 is the terminal for ON/OFF signal input for auxiliary
heat on DLS VRF Interface. The signal type is dry contact.
NOTE:
Some of the indoor units do not support AUX heat
function.
Voltage and current must meet the requirements of Tables 3.
Table 3 —Max. Current and Voltage
DIP SWITCH SETTINGS
• ENC1/ENC2 are rotary dial whereas SW7 is ON/OFF.
• ENC2 is used to set the network address.
• Combination of ENC1 and SW7 allows you to set the
indoor unit address. See Table 4.
Example:
A system has 10 VRF indoor units and 2 DLS indoor units
with DLS VRF Interfaces. There is no automatic addressing
function for the DLS VRF Interface. If the VRF indoor units
are addressed 0-9, the DLS indoor units will be 10 and 11
following the settings in Table 4.
Table 4 —DIP Switch Settings
NOTE:
The address assigned through ENC1 & SW7 must
be same as indoor unit address on wall controller.
Table 5 —SW2_1 and SW2_2 Definition
Table 6 —0/1 Definition of Each Dial Code Switch
NOTE:
Temperature unit (°F or °C) set through SW2_1 must
be same as touch screen central controller and wall controller.
Table 7 —EF and E8 Error Codes
Table 8 —LED 1
Power
Phase
1-Phase
Volt and
Frequency
230V-60Hz
Fuse on board
5A/250VAC
Wire
2-core stranded shielded cable
18AWG
PORT
MAX. VOLTAGE (V AC/DC)
MAX. CURRENT (A)
CN54
24
1
Note
：
0
Touch Screen
Controller
(TSCC)
X E Y
CN2
HB HA
DLS VRF interface 1#
CN3
CN4
X E Y
X E Y
VRF
controller
Ductless
Indoor
unit 1#
+$+%
X Y E
CN2
HB HA
DLS VRF interface M#
CN3
CN4
X E Y
X E Y
VRF
controller
Ductless
Indoor
unit N#
+$+%
X Y E
<
;
Matched
resistance
CN54
Control port of
auxiliary heater etc.
(Voltage range: 0-24V AC/DC)
(Current range: 0-1A)
ENC2
Set network address (0~7)
ENC1 and
SW7
Set IDU address, valid range is 0~15
Set IDU address, valid range is 16~31
Set IDU address, valid range is 32~47
Set IDU address, valid range is 48~63
SW2_1
0
Temperature:
°
F (default)
1
Temperature:
°
C
SW2_2
Reserved
ERROR CODE
INSTRUCTIONS
EF
IF TSCC or wired controller displays EF error code, you
need to check whether IDU appears fault or protection
E8
IF TSCC or wired controller displays E8 error code, you
need to check whether the IDU has a communication
problem with the interface
Blink 1time/1Hz
Net address >7
Blink 2times/1Hz
interface and IDU communication error
Blink 3times/1Hz
interface and TSCC communication error
Blink 4times/1Hz
interface and wired controller communication error
ON
SW1
