Final Checks; Required Liquid-Line Temperature; Care And Maintenance - Carrier 38EZG Installation And Start-Up Instructions Manual

Table 4—Required Liquid-Line Temperature (°F)
LIQUID
PRESSURE AT
SERVICE VALVE
8
189 58
195 60
202 62
208 64
215 66
222 68
229 70
236 72
243 74
251 76
259 78
266 80
274 82
283 84
291 86
299 88
308 90
317 92
326 94
335 96
345 98
354 100
364 102 100
374 104 102
384 106 104
395 108 106
406 110 108
416 112 110
427 114 112
439 116 114
450 118 116
462 120 118
474 122 120
486 124 122
499 126 124
511 128 126
8. If a unit has a higher suction line temperature than charted
temperature, add refrigerant until charted temperature is
reached.
9. If unit has a lower suction line temperature than charted
temperature, reclaim refrigerant until charted temperature is
reached.
10. When adding refrigerant, charge in liquid form into suction
service port using a flow-restricting device.
11. If outdoor air temperature or pressure at suction valve
changes, charge to new suction line temperature indicated on
chart.
Step 13—Final Checks
IMPORTANT: Before leaving job, be sure to do the following:
REQUIRED SUBCOOLING
TEMPERATURE
(°F)
10 12 14 16
56 54 52 50
58 56 54 52
60 58 56 54
62 60 58 56
64 62 60 58
66 64 62 60
68 66 64 62
70 68 66 64
72 70 68 66
74 72 70 68
76 74 72 70
78 76 74 72
80 78 76 74
82 80 78 76
84 82 80 78
86 84 82 80
88 86 84 82
90 88 86 84
92 90 88 86
94 92 90 88
96 94 92 90
98 96 94 92
98 96 94
100 98 96
102 100 98
104 102 100
106 104 102
108 106 104
110 108 106
112 110 108
114 112 110
116 114 112
118 116 114
120 118 116
122 120 118
124 122 120
1. Ensure that all wiring and tubing is secure in unit before
adding panels and covers. Securely fasten all panels and
covers.
2. Tighten service valve stem caps to 1/12-turn past finger tight.
18
3. Leave User's Manual with owner. Explain system operation
48
and periodic maintenance requirements outlined in manual.
50
4. Fill out Dealer Installation Checklist and place in customer
52
file.
54
56
58
60
For continuing high performance and to minimize possible equip-
62
ment failure, periodic maintenance must be performed on this
64
equipment.
66
68
Frequency of maintenance may vary depending upon geographic
70
areas, such as coastal applications. See User's Manual for infor-
72
mation.
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
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CARE AND MAINTENANCE