Section 5. Refrigerant Line Considerations - Lennox LIAC024-180P431 Installation Manual

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes
5.2 Required Refrigerant Line Length
Determine required line length.
5.3 Refrigerant Line Insulation
Important: The Suction Line must always be
insulated. DO NOT allow the Liquid Line and
Suction Line to come in direct (metal to metal)
contact.
Table 5.1
Line Sizes
Suction
Model
Line
24/36 3/4
48/60
7/8
6
Service Valve Connection Sizes
Liquid Suction Line
Line Connection
3/8 3/4
3/8 7/8
Liquid Line
Liquid Line
Connection
3/8
3/8
Suction Line
Insulation