5390862-UIM-A-0318
Johnson Controls Unitary Products
9
OPTIONAL COLD WEATHER CHARGING
1.
Assemble the charging tent.
2.
Slide charging tent over top of condenser unit.
3.
Position the door zipper over the lineset so charging tent sits
evenly on ground.
4.
Make sure distance around the outdoor unit inside of charging tent
is even for airflow.
5.
Stake down the edges of the charging tent cover to prevent the
unit fan from blowing the charging tent away.
6.
Start outdoor unit.
7.
For better temperature measurement inside the charging tent, use
a thermocouple to monitor temperature readings. Locate the ther-
mocouple monitor approximately 8-10 inches away from the coil
guard and 2/3 the way above the bottom of the coil on the opposite
side from the control box.
8.
Based on outdoor ambient temperature, begin adjusting windows
in order to achieve a stable temperature above 55
°
F inside tent.
Note that the colder the outdoor ambient temperature is the fewer
windows need removal.
9.
Use outdoor unit charging chart. Verify that the outdoor ambient
temperature listed on the charging chart is the temperature inside
the charging tent.
10. Carefully adjust the charging tent windows until reaching the
desired temperature, and allow the unit to stabilize for a minimum
of 15 minutes. Check the thermocouple to make sure the tempera-
ture is still maintained at desired temperature. If the temperature is
out of range, adjust the windows by opening or closing them.
11. Once the condition inside the charging tent is STABILIZED, follow
the “System Charge” procedure to adjust charge in the unit.
Add or remove charge, and adjust windows to maintain the desired
temperature inside the tent.
TABLE 2:
R-410A Saturation Properties
TEMP. °F
PRESSURE
PSIG
TEMP. °F
PRESSURE
PSIG
TEMP. °F
PRESSURE
PSIG
TEMP. °F
PRESSURE
PSIG
TEMP. °F
PRESSURE
PSIG
45
130
60
170
75
217
90
274
105
341
46
132
61
173
76
221
91
278
106
345
47
135
62
176
77
224
92
282
107
350
48
137
63
179
78
228
93
287
108
355
49
140
64
182
79
232
94
291
109
360
50
142
65
185
80
235
95
295
110
365
51
145
66
188
81
239
96
299
111
370
52
147
67
191
82
243
97
304
112
375
53
150
68
194
83
247
98
308
113
380
54
153
69
197
84
250
99
313
114
385
55
156
70
201
85
254
100
317
115
391
56
158
71
204
86
258
101
322
116
396
57
161
72
207
87
262
102
326.
117
401
58
164
73
211
88
266
103
331
118
407
59
167
74
214
89
270
104
336
119
412
NOTICE
For better airflow, the size of the charging tent must be at least
70"x70”x70” and must have some adjustable flaps or windows to con-
trol the temperature inside the charging tent. The charging tent must
not have a floor or floor covering. Be sure to follow the “System
Charge” procedures from Section VI of this Installation Manual.
FIGURE 10:
System Charging Connections
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CAUTION
Compressor damage will occur if system is improperly charged. On
new system installations, charge system per tabular data sheet for
the matched coil and follow guidelines in this instruction.
!
CAUTION
Do not leave the system open to the atmosphere. Unit damage could
occur due to moisture being absorbed by the POE oil in the system.
This type of oil is highly susceptible to moisture absorption.
!
