Lennox LGH 072 User Manual

Page 36
LGH/LCH036, 048, 060, 072
TABLE 20
LG/LC 048H NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 256 122
755 F 299 132
855 F 342 139
955 F 388 145
1055 F 437 150
1155 F 493 153
TABLE 21
LG/LC 048H REHEAT NORMAL OPERATING
PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 261 138
755 F 299 142
855 F 342 144
955 F 389 147
1055 F 441 150
1155 F 497 153
TABLE 22
LG/LC 060S NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 264 136
755 F 303 138
855 F 346 140
955 F 395 142
1055 F 445 145
1155 F 500 148
TABLE 23
LG/LC 060S REHEAT NORMAL OPERATING
PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 267 135
755 F 307 137
855 F 350 139
955 F 399 142
1055 F 451 144
1155 F 507 147
TABLE 24
LG/LC 060H NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 253 136
755 F 291 137
855 F 334 139
955 F 380 142
1055 F 427 145
1155 F 479 148
TABLE 25
LG/LC 060H REHEAT NORMAL OPERATING
PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 256 136
755 F 295 138
855 F 337 140
955 F 384 143
1055 F 432 146
1155 F 488 147
TABLE 26
LG/LC 072H NORMAL OPERATING PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 271 136
755 F 312 139
855 F 357 141
955 F 405 144
1055 F 458 147
1155 F 515 151
TABLE 27
LG/LC 072H REHEAT NORMAL OPERATING
PRESSURES
Outdoor Coil
Entering Air Temp
Discharge
+
10 psig
Suction + 5
psig
655 F 272 137
755 F 312 139
855 F 356 140
955 F 403 142
1055 F 453 145
1155 F 507 148
D-Charge Verification - Approach Method - AHRI
TESTING (Fin/Tube Coil Continued)
1- Using the same thermometer, compare liquid
temperature to outdoor ambient temperature.
Approach Temperature = Liquid temperature (at
condenser outlet) minus ambient temperature.
2- Approach temperature should match values in table
28. An approach temperature greater than value
shown indicates an undercharge. An approach
temperature less than value shown indicates an
overcharge.
3- The approach method is not valid for grossly over or
undercharged systems. Use tables 14 through 27 as
a guide for typical operating pressures.

Lennox LGH 072 Specifications

General

Brand	Lennox
Model	LGH 072
Category	Air Conditioner
Language	English