Lennox Elite ELS Series Installation Instructions Manual page 20

Outdoor
ELS072S4S
ELS090S4S
ELS120S4S
ELS120S4D
ELS150S4D
ELS180S4D
ELS240S4D
TABLE 4. Normal Operating Pressures – Cooling – Single Stage – Commercial*
Entering
ELS072 + ELA072
Outdoor
Air Temp STAGE 1
ºF (ºC)
Liquid Suction
65 (18)
245
75 (24)
283
85 (29)
327
95 (35)
377
105 (41)
426
115 (46)
484
125 (52)
540
SCFM 2600
*pressures at 80F dry bulb and 67F wet bulb entering indoor air temperatures.
TABLE 5. Normal Operating Pressures – Cooling – Two Stage – Commercial*
Entering
Outdoor Air
STAGE 1
Temp
Liquid
ºF (ºC)
65 (18)
248
75 (24)
288
85 (29)
332
95 (35)
379
105 (41)
432
115 (46)
488
125 (52)
550
SCFM
Entering
Outdoor Air
STAGE 1
Temp
Liquid
ºF (ºC)
65 (18)
241
75 (24)
284
85 (29)
331
95 (35)
380
105 (41)
434
115 (46)
491
125 (52)
540
SCFM
TABLE 3. Approach Temperatures – Commercial Matchups
Models
Indoor
ELA072S4S
ELA090S4D
ELA120S4D
ELA120S4D
ELA150S4D
ELA180S4D
ELA240S4D
ELS072 + ELA090
STAGE 1
Liquid Suction
137 252 144
141 292 146
143 336 148
145 385 150
148 438 152
150 495 154
155 558 157
2750
(2) ELS090 + ELA180
STAGE 2
Suction Liquid
122 247
125 287
127 331
129 378
132 430
135 487
138 548
5150
(2) ELS120S4S + ELA240
STAGE 2
Suction Liquid
130 237
134 280
136 327
138 376
141 429
143 490
145 540
7400
Stage
1
1
1
1
2
1
2
1
2
1
2
ELS090 + ELA090 ELS090 + ELA120
STAGE 1
Liquid Suction Liquid
240 128
294 130
338 131
385 133
435 135
489 136
545 140
2725
STAGE 1
Suction Liquid
120 244
122 282
125 326
127 373
130 423
133 477
136 537
STAGE 1
Suction Liquid
130 254
134 291
135 337
137 381
140 432
142 487
145 543
Page 20
Approach Temperature
(ºF) (+/- 1)
4
7
4
5
5
7
5
4
4
7
8
ELS120S4S +
STAGE 1
Suction Liquid
251 130 243
292 132 285
336 134 332
384 136 378
436 139 434
492 141 491
553 144 548
2750
ELS120S4D + ELA120
STAGE 2
Suction Liquid
133 240
136 278
139 322
141 372
142 420
144 476
147 539
4000
ELS150 + ELA150
STAGE 2
Suction Liquid
132 254
135 289
138 336
140 382
142 433
144 489
147 550
4395
(ºC) (+/- 0.5)
2.2
3.9
2.2
2.8
2.8
3.9
2.8
2.2
2.2
3.9
4.4
ELA120
STAGE 1
Suction
135
136
138
139
141
142
146
3850
Suction
133
135
137
138
141
143
145
Suction
130
133
134
136
139
141
145