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TABLE 2: R-410A Saturation Properties
PRESSURE
TEMP. ° F
PSIG
45
130
46
132
47
135
48
137
49
140
50
142
51
145
52
147
53
150
54
153
55
156
56
158
57
161
58
164
59
167
SECTION VII: ELECTRICAL CONNECTIONS
GENERAL INFORMATION & GROUNDING
Check the electrical supply to be sure that it meets the values specified
on the unit nameplate and wiring label.
Power wiring, control (low voltage) wiring, disconnect switches and over
current protection must be supplied by the installer. Wire size should be
sized per NEC requirements.
CAUTION
!
All field wiring must USE COPPER CONDUCTORS ONLY and be in
accordance with Local, National, Fire, Safety & Electrical Codes. This
unit must be grounded with a separate ground wire in accordance
with the above codes.
The complete connection diagram and schematic wiring label is located
on the inside surface of the unit service access panel.
FIELD CONNECTIONS POWER WIRING
1.
Install the proper size weatherproof disconnect switch outdoors
and within sight of the unit.
2.
Remove the screw from the field wiring access cover on the ser-
vice valve end of the unit. Slide the cover down and remove from
unit.
3.
Run power wiring from the disconnect switch to the unit.
4.
Route wires from disconnect through power wiring opening pro-
vided and into the top of the field wiring box as shown in Figure 6.
5.
Install the proper size time-delay fuses or circuit breaker, and
make the power supply connections.
FIELD CONNECTIONS CONTROL WIRING
1.
Route low voltage wiring into bottom of field wiring box as shown
in Figure 6. Make low voltage wiring connections inside the low
voltage box per Figures 8 - 11.
Johnson Controls Unitary Products
PRESSURE
TEMP. ° F
TEMP. ° F
PSIG
60
170
61
173
62
176
63
179
64
182
65
185
66
188
67
191
68
194
69
197
70
201
71
204
72
207
73
211
74
214
PRESSURE
TEMP. ° F
PSIG
75
217
90
76
221
91
77
224
92
78
228
93
79
232
94
80
235
95
81
239
96
82
243
97
83
247
98
84
250
99
85
254
100
86
258
101
87
262
102
88
266
103
89
270
104
FIGURE 5: Outdoor Unit Field Wiring Control Box
2.
The complete connection diagram and schematic wiring label is
located on the inside surface of the unit service access panel.
3.
Replace the corner cover removed in Step 2.
4.
All field wiring to be in accordance with national electrical codes
(NEC) and/or local-city codes.
A Start Assist Kit is available for 1-phase units and is recommended
for long line set applications or in areas of known low voltage prob-
lems.
5.
Mount the thermostat about 5 ft. above the floor, where it will be
exposed to normal room air circulation. Do not place it on an out-
side wall or where it is exposed to the radiant effect from exposed
glass or appliances, drafts from outside doors or supply air grilles.
6.
Route the 24-volt control wiring (NEC Class 2) from the outdoor
unit to the indoor unit and thermostat.
To eliminate erratic operation, seal the hole in the wall at the thermo-
stat with permagum or equivalent to prevent air drafts affecting the
operation of in the thermostat.
5320779-UIM-A-0417
PRESSURE
TEMP. ° F
PSIG
274
105
278
106
282
107
287
108
291
109
295
110
299
111
304
112
308
113
313
114
317
115
322
116
326.
117
331
118
336
119
NOTICE
NOTICE
PRESSURE
PSIG
341
345
350
355
360
365
370
375
380
385
391
396
401
407
412
7
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