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Field Wiring
General
Wiring must comply with all applicable codes and ordinances .
Daikin Applied’s product warranty does not cover equipment
failures caused or contributed to by wiring not in accordance
with specifications. A tripped manual motor protector (MMP)
or open fuse indicates a short, ground or overload . Before
replacing a fuse or restarting a compressor or fan motor, locate
the trouble and correct . Use copper wire for all power lead
terminations . Contact the factory for information concerning
aluminum wire power lead terminations .
A single power terminal block is provided as standard, and
wiring within the unit is done in accordance with the
National
Electric Code (NEC)
. Each branch circuit within the control
panel is individually protected by fuse or MMP. A single field-
supplied disconnect is required or a unit-mounted, non-fused
disconnect can be ordered with the unit .
A knockout is located on the right or left front unit upright for
locating unit power entry. 24 V field connections are suitable for
Class II wiring .
Unit Disconnect
Disconnecting means are addressed by Article 440 of the NEC,
which requires “disconnecting means capable of disconnecting
air conditioning and refrigerant equipment including motor-
compressors, and controllers, from the circuit feeder .” Select
and locate the disconnect switch within the NEC guidelines .
Location requirements per NEC are that the disconnect is
located in a readily accessible position within sight (50 feet) of
the unit . A factory-mounted, non-fused disconnect is available .
Return Air and Outside Air Sensors
All units are provided with a return air sensor . It is connected
to the patch panel and is coiled and placed in the control box
of the unit for shipment . Field-installation is required to put it in
the return air stream for proper unit operation . The return air
sensor is connected to the unit’s patch panel at location PL1
(see
IM 919
) .
The outside air sensor is optional and can be ordered with the
unit. The outside air sensor is field wired to terminal strip TB2.
It is connected at terminals 122, 123, and 123G .
The mixed air temperature sensor is already installed at the air
inlet .
Mount the sensors in areas that are exposed to representative
temperature conditions . Mount them at a position that has good
air mixing and does not have stratification. Sensors can be
mounted in the ductwork using a grommet (see
Figure 12
) .
Figure 12: Return/Outside Air Sensor Mounting
Table 6: Compressor Motors
Compressor
(hp)
Refrigerant
208V/60Hz/3Ø
230V/60Hz/3Ø
460V/60Hz/3Ø
575V/60Hz/3Ø
415V/50Hz/3Ø
RLA
LRA
RLA
LRA
RLA
LRA
RLA
LRA
RLA
LRA
6
R-410A
21 .0
182
19 .0
164
8 .4
75
6 .8
54
7 .9
75
7
R-410A
20 .2
182
19 .6
164
11 .6
100
9 .8
78
—
—
8
R-410A
23 .2
216
22 .5
195
11 .3
95
9 .0
80
—
—
9
R-410A
26 .9
249
25 .0
225
12 .6
114
9 .6
80
—
—
10
R-410A
30 .3
264
28 .2
239
14 .2
125
10 .6
80
13 .6
145
11
R-410A
35 .4
271
32 .0
245
15 .5
125
12 .6
100
—
—
13
R-410A
40 .8
332
38 .5
300
18 .3
150
17 .4
109
17 .2
139
15
R-410A
49 .8
376
48 .4
340
18 .5
173
20 .2
132
21 .9
196
IM 1032-2 • Self-Contained Air Conditioning System 14 www .DaikinApplied .com
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