LG DOAS Installation And Operation Manual page 23

Refrigerant trim charges must be manually calculated, using Table 4. LATS does not currently have the ability to calculate refrigerant charge
for DOAS units.
Table 5: System Refrigerant Charge Calculator (lbs.).
System Tag or ID____________________________________
Line #
Main Coil Volume
1 Linear feet of 1/4" liquid line
2 Linear feet of 3/8" liquid line
3 Linear feet of 1/2" liquid line
4 Linear feet of 5/8" liquid line
5 Linear feet of 3/4" liquid line
6 Linear feet of 7/8" liquid line
7 Linear feet of 1" liquid line
8 Total Trim (additional charge)
Reheat Coil Volume
1 Linear feet of 1/4" liquid line
2 Linear feet of 3/8" liquid line
3 Linear feet of 1/2" liquid line
4 Linear feet of 5/8" liquid line
5 Linear feet of 3/4" liquid line
6 Linear feet of 7/8" liquid line
7 Linear feet of 1" liquid line
8 Total Trim (additional charge)
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
Description
Due to our policy of continuous product innovation, some specifications may change without notification.
Job Name_______________________________________
Project Manager__________________________________
Date___________________________________________
Refrigerant Charge
Quantity (ft)
per Feet of Pipe
1
0.015
0.041
0.079
0.116
0.179
0.238
0.323
1
0.015
0.041
0.079
0.116
0.179
0.238
0.323
START-UP
Refrigerant Charge
Total (lbs.)
7.5
2.9
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