Maintenance - Lennox 13HPX Series Unit Information

Table 23. Normal Operating Pressures − Liquid +10 & Vapor +5 PSIG*
13HPX−018 13HPX−024
Liquid/
5F (5C)** Vapor
65 (18) 234 / 142 258 / 140
75 (24) 273 / 144 299 / 142
85 (29) 316 / 145 347 / 145
95 (35) 365 / 148 399 / 148
105 (41) 421 / 151 460 / 150
115 (45) 492 / 152 534 / 152
60 (15) 325 / 130 353 / 130
50(10) 309 / 114 330 / 109
40 (4) 293 / 96 307 / 90
30 (−1) 278 / 79 291 / 75
20 (−7) 264 / 65 276 / 59
*These are most−popular−match−up pressures. Indoor match up, indoor air quality, and indoor load cause pressures to vary.
**Temperature of the air entering the outside coil.
Table 24. HFC−410A Temp. (°F) − Pressure (Psig)
°F Psig °F Psig
−40 10.1 21 80.5
−35 13.5 22 82.3
−30 17.2 23 84.1
−25 21.4 24 85.9
−20 25.9 25 87.8
−18 27.8 26 89.7
−16 29.7 27 91.6
−14 31.8 28 93.5
−12 33.9 29 95.5
−10 36.1 30 97.5
−8 38.4 31 99.5
−6 40.7
32 100.8
−4 43.1 33 102.9
−2 45.6 34 105
0 48.2 35 107.1
36 109.2
1 49.5
2 50.9 37 111.4
3 52.2 38 113.6
4 53.6 39 115.8
5 55 40 118
6 56.4 41 120.3
7 57.9 42 122.6
8 59.3 43 125
9 60.8 44 127.3
10 62.3 45 129.7
11 63.9 46 132.2
12 65.4 47 134.6
13 67 48 137.1
14 68.6 49 139.6
15 70.2 50 142.2
16 71.9 51 144.8
17 73.5 52 147.4
18 75.2 53 150.1
19 77 54 152.8
20 78.7 55 155.5
13HPX−XXX−230−01 through 13HPX−XXX−230−03
13HPX−030 13HPX−036
Liquid / Liquid /
Vapor Vapor
238 / 137
278 / 138
322 / 140
369 / 143
425 / 144
487 / 147
328 / 127
313 / 110
297 / 93
284 / 77
271 / 62
°F Psig °F Psig
56 158.2 91 278.2
57 161 92 282.3
58 163.9 93 286.5
59 166.7 94 290.8
60 169.6 95 295.1
61 172.6 96 299.4
62 175.4 97 303.8
98 308.2
63 178.5
64 181.6 99 312.7
65 184.3 100 317.2
66 187.7 101 321.8
67 190.9 102 326.4
68 194.1 103 331
69 197.3 104 335.7
70 200.6 105 340.5
71 203.9 106 345.3
72 207.2 107 350.1
73 210.6 108 355
74 214 109 360
75 217.4 110 365
76 220.9 111 370
77 224.4 112 375.1
78 228 113 380.2
79 231.6 114 385.4
80 235.3 115 390.7
81 239 116 396
82 242.7 117 401.3
83 246.5 118 406.7
84 250.3 119 412.2
85 254.1 120 417.7
86 258 121 423.2
87 262 122 428.8
88 266 123 434.5
89 270 124 440.2
90 274.1
125 445.9
13HPX−042
Liquid/ Liquid
Vapor / Vapor
Cooling
260 / 136 231 / 135
303 / 140 267 / 138
348 / 143 314 / 140
398 / 145 367 / 143
452 / 148 414 / 146
512 / 151 473 / 148
Heating
350 / 131 360 / 135
331 / 107 340 / 110
314 / 88 324 / 91
290 / 74 307 / 73
283 / 58 298 / 61
E − Oil Charge
See compressor nameplate.
IV − MAINTENANCE
Electric shock hazard. Can cause inju-
ry or death. Before attempting to per-
form any service or maintenance, turn
the electrical power to unit OFF at dis-
connect switch(es). Unit may have
multiple power supplies.
Maintenance and service must be performed by a qualified
installer or service agency. At the beginning of each cooling
season, the system should be checked as follows:
Outdoor Unit
1. Clean and inspect outdoor coil (may be flushed with a
water hose). Ensure power is off before cleaning.
2. Outdoor unit fan motor is pre−lubricated and sealed. No
further lubrication is needed.
3. Visually inspect all connecting lines, joints and coils for
evidence of oil leaks.
4. Check all wiring for loose connections.
5. Check for correct voltage at unit (unit operating).
6. Check amp draw on outdoor fan motor.
Unit nameplate__________Actual__________.
7. Inspect drain holes in coil compartment base and clean
if necessary.
NOTE - If insufficient heating or cooling occurs, the unit
should be gauged and refrigerant charge should be
checked.
Indoor Coil
1. Clean coil if necessary.
2. Check connecting lines, joints and coil for evidence of
oil leaks.
Page 17
13HPX−048 13HPX−060
Liquid / Liquid /
Vapor Vapor
246 / 134 256 / 116
286 / 136 298 / 123
330 / 138 345 / 131
379 / 140 395 / 135
432 / 143 450 / 138
492 / 146 512 / 141
361 / 130 370 / 127
334 / 100 350 / 102
302 / 92 331 / 81
300 / 73 309 / 62
286 / 60 300 / 56
WARNING
13HPX−061
Liquid/
Vapor
237 / 135
275 / 137
317 / 139
366 / 141
417 / 144
472 / 147
386 / 122
342 / 81
332 / 76
322 / 73
304 / 59