Lennox LGH150H User Manual

Page 29
TABLE 14 580239-02
LGH/LCH120H Fin/Tube - TXV
Outdoor
Coil
Entering
Air Temp
CIRCUIT 1 CIRCUIT 2
Dis
charge
+
10 psig
Suction
+
5 psig
Dis
charge
+
10 psig
Suction
+
5 psig
65° F 259 137 283 139
75° F 297 140 321 142
85° F 338 143 360 144
95° F 382 146 406 146
105° F 431 149 453 148
115° F 486 151 505 151
TABLE 15 580240-02
LGH/LCH120H Fin/Tube Hot Gas Reheat - TXV
Outdoor
Coil
Entering
Air Temp
CIRCUIT 1 CIRCUIT 2
Dis
charge
+
10 psig
Suction
+
5 psig
Dis
charge
+
10 psig
Suction
+
5 psig
65° F 266 134 281 139
75° F 303 137 310 141
85° F 344 140 358 143
95° F 391 143 403 145
105° F 443 146 450 146
115° F 499 149 497 148
TABLE 16 580530-06
LGH/LCH150H W & W/O Hot Gas
Reheat-Fin/Tube-TXV
Outdoor
Coil
Entering
Air Temp
CIRCUIT 1 CIRCUIT 2
Dis
charge
+
10 psig
Suction
+
5 psig
Dis
charge
+
10 psig
Suction
+
5 psig
65°F 267 130 278 130
75°F 307 132 320 132
85°F 351 136 367 135
95°F 400 139 414 137
105°F 451 142 467 140
115°F 508 145 523 143
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
17. 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 10 through 16 as
a guide for typical operating pressures.
TABLE 17
APPROACH TEMPERATURE - Fin/Tube - TXV
Unit
Liquid Temp. Minus Ambient Temp.
1st Stage 2nd Stage
092 6°F + 1 (3.3°C + 0.5) 7°F + 1 (3.9°C + 0.5)
102 6°F + 1 (3.3°C + 0.5) 9°F + 1 (5.0°C + 0.5)
120 6°F + 1 (3.3°C + 0.5) 10°F + 1 (5.6°C + 0.5)
150H Std. &
Reheat
4°F + 1 (2.2°C + 0.5) 5°F + 1 (2.8°C + 0.5)
092 Reheat 6°F + 1 (3.3°C + 0.5) 8°F + 1 (4.4°C + 0.5)
102 Reheat 6°F + 1 (3.3°C + 0.5) 9°F + 1 (5.0°C + 0.5)
120 Reheat 6°F + 1 (3.3°C + 0.5) 8°F + 1 (4.4°C + 0.5)

Lennox LGH150H Specifications

General

Brand	Lennox
Model	LGH150H
Category	Air Conditioner
Language	English