Delta 21UT024C24 Instruction Manual page 16

Floor Ceiling Air-Conditioning Unit
Note: After all ,cover the throttle by a damping block from the attached bag to lower the airflow
noise of refrigerant.
4.4.5 Connecting the Pipe at the Outdoor Unit Side (Fig.13)
(1) Refer to Table.8 for field tubing diameters. The pipe must remain round. Do not crimp end of
the line.
Table.7 Flare nut tightening torque
Pipe Diameter
(inch)
3/8
1/2
5/8
3/4
7/8
Table.8 Refrigerant Line Set Inches (mm)
Model
Liquid Line
3/8 inch
31VA024C24
3/8 inch
31VA036C24
3/8 inch
31VA048C24
1/2 inch
31VA060C24
Line set size matches
service valve connection
Fig.12
Tightening Torque
(N·m)
35-40
45-50
60-65
70-75
85-90
Valve Field Connections
Gas Line
5/8 inch
3/4 inch
7/8 inch
7/8 inch
Do not crimp service valve connector
whenpipe is smaller than connection
Fig.13
12