Figure 14 - Piping Connections At Unit
Suction Line
Liquid Line
Suction Lin
ne
Liquid Li
ne
Liq
(When a reducing bushing is required, install
only at the indoor suction-line connection.)
REFRIGERANT PIPING
Piping Preparation
• Avoid piping on wet and rainy days.
• Use only clean, refrigeration-grade copper tubing.
• Use tubing benders to guard against kinking.
• Verify no burrs remain on fi ttings.
• Cap ends of lines until ready for connections. Verify
plastic end caps remain in place when inserting through
wall openings.
• Insulate both lines.
• Isolate tubing from transmitting vibration to building or
unit and avoid contact with sharp edges.
• Wrap refrigeration valves with wet rag “heat sink” to
protect valves while brazing. See Figure 31, Page 20 .
Refrigerant Piping
1.
Clean tubing ends. Insert into fi ttings. See Figure 15 .
2.
Protect valves by wrapping with wet rag “heat sink”
before brazing. See Figure 16 .
3.
Use shield to protect paint. Shield may be made from
scrap metal. See Figure 14.
4.
Braze tubing into fi ttings.
5.
Install all panels removed to this point. Panels are
required for proper air fl ow.
Figure 15 - Clean Ends Of Tubing
Figure 16 - Wet Rag “Heat Shield Over Valves
Figure 17 - Make Shield To Protect Paint
Add heat shield behind valve when brazing to
Add heat shield behind valve when brazing to
prevent damage to unit.
prevent damage to unit.
Add wet rag over valve to keep from
Add wet rag over valve to keep from
melting internal valve components.
melting internal valve components.
14
