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Installation Instructions
Step 3 - Installation of the Outdoor Unit (Cont.)
LED
1
2
ALL Flashing
Status
ON
Flashing
ON
Flashing
Model
Connection priority is
largest indoor unit on lowest
terminal set (D), and install
remaining indoor units from
bottom to top.
When there are 2 indoors,
the prior service valves are
When there are 3 indoors,
the prior service valves are
When there are 4 indoors,
the prior service valves are
NOTE: For better oil return and more reliable system, please execute as the above when connecting indoor unit.
NOTE: No connection priority for ASH436NCDW*.
Model Number
Factory
Charge
Unit
oz
ASH220NCDW*
99
ASH218JCDS*
49.5
ASH324NCDW*
99
ASH324JCDS*
67
ASH436JCDS*
113
ASH436NCDW*
113
14
3
4
OFF
ALL ON
Flashing
ON
Flashing
ON
Only one LED flashing
Connections Cautions
ASH436JCDS*
ASH324NCDW*
D C
D C B
D C B A
Refrigerant Charge and Pipe Length Information
Total Pipe
Additional
Length of
charge rule*
factory charge
ft
oz/ft
100
0.2
50
0.2
100
0.2
75
0.2
100
0.2
131
0.2
5
Message
Unit not connected
Automatic checking impossible, all units connected wrong
All units connected correctly
Flashing
ON: unit connected correctly
Flashing: unit connected wrong, need to change the wiring manually
between 2, 3, and 5
ON: unit connected correctly
ON
Flashing: unit connected wrong, need to change the wiring manually
between 2 and 3
ASH324JCDS*
C B
C B
C B A
C B A
/
/
Branch
System
Maximum
Maximum
pipe length
pipe length
ft
82
65
82
82
82
82
ASH218JCDS*
A
A
B
B
C
B A
/
/
Minimum pipe length
ft
164
6 ft per indoor and 20 ft per system
98
6 ft per indoor and 20 ft per system
197
6 ft per indoor and 20 ft per system
197
6 ft per indoor and 20 ft per system
230
6 ft per indoor and 25 ft per system
230
6 ft per indoor and 25 ft per system
ASH220NCDW*
B A
/
/
ft
31-5000275 Rev. 5
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