18
INDOOR WIRING DIAGRAM
5
YELLOW
RED
M
CN22
VERTICAL
SWING MOTOR
DC FAN
MOTOR
M
5
CN12
N-IN
CN15
L-OUT
L-IN(or CN 2)
BLUE(BLACK)
INDOOR COIL
OUTLET
TEMP. SENSOR(T2)
MAIN CONTROL BOARD
CN43
CN32
2
CN45
0
8
1 2
ON
0
8
1 2
ON
0
8
1 2
ON
0
8
1 2
ON
ENC3+F1
0~F
0~F
0~F
0~F
NETADDRESS
CODE
0~15
16~31
32~47
48~63
FACTORY SETTING
FOR SETTING NETADDRESS (CCM Comm.Bus)
ALARM
(MULTI-FUNCTION
CONTROL BOARD)
Indoor unit
Outdoor unit
HORIZONTAL
SWING MOTOR M
CN19
JX1
P_1
Y/G
M
To outdoor unit
5(10)
CN31
Y/G
2 3
1
Note2:The programmable
wired controller and CCM
COMM.BUS use the same
port CN42 CN41
MAGNET
RING
Note1:COMPONENT IN
DASH LINE IS OPTIONAL
OR FIELD WIRING.
DISPLAY BOARD
CN18
MULTI-FUNCTION CONTROLBOARD
CN3
CN2
CN4
CN1
CN40
CN42 CN41
CN46
X Y E 5V/12V
CCM
COMM. BUS
REMOTE
ON/OFF
4(8)
3
ROOM TEMP.
SENSOR(T1)
CN21
CN5
OCCUPANCY
SENSOR
5(4or 3)
HUMIDITY SENSOR
5
WiFi
MODULE
4
WIRED
CONTROLLER
5
PROGRAMMABLE
WIRED
CONTROLLER
MAGNET
RING
Input:230VAC
(or 115VAC)
Input:230VAC
(or 115VAC)
Output:310VDC
(or 140VDC)
Output:0-24VDC
Output:
12VDC
Input:12VDC
Output:
5VDC
Input:
5VDC
Output:
5VDC
Output:
0-5VDC
Output:
5VDC
Output:
5VDC
Output:
5VDC
Input:
5VDC
Output:
0-5VDC
Output:
12VDC
Output:
12VDC
Output:
5VDC
Output:
12VDC
Figure 28. 3WMC036 Indoor Unit Wiring Diagram
Unit Start-Up
IMPORTANT
Units should be energized 24 hours before unit start-up
to prevent compressor damage as a result of slugging.
1.
Inspect all factory- and field-installed wiring for loose
connections.
2. Verify that the manifold gauge set is connected.
3. Add additional refrigerant charge if required before
opening valves and while system is still under a
vacuum.
4.
Open the liquid and suction line service valves to
release the refrigerant charge contained in outdoor
unit into the system.
5. Replace the stem caps and tighten to the value listed
in “Table 1. Torque Requirements” on page 8.
6. Check voltage supply at the outdoor unit terminal strip.
The voltage must be within the range listed on the
unit’s nameplate. If not, do not start the equipment
until you have consulted with the power company and
the voltage condition has been corrected.
7. Refer to the included user guide to operate the system
using the provided remote control.
8. Visually check for binding of both indoor and outdoor
fans.
Adding Refrigerant for Longer Line Set
The outdoor unit is factory-charged with refrigerant.
Calculate the additional refrigerant required according to
the diameter and the length of the liquid pipe between the
outdoor unit and indoor unit connections.
Be sure to add the proper amount of additional refrigerant.
Failure to do so may result in reduced performance.
Maximum line set length is 213 feet (65 meters).
Table 8. Additional Refrigerant Charge
System Size
(KBtu)
Pipe Length
(feet / meters)
Amount of Refrigerant
to add
36
>25 (7.5)
0.322 oz/ft (30g/m)