11
RefRIgeRANT PIPINg
figure 7 Refrigerant Connections
S
uction line
Liquid line
Knockout for piping removed
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 fittings.
• 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 9, Page 12
• DO NOT use suction line size larger than condenser
service valve connection. This can harm compressor.
Install reducer, when used, only at air handler
connection.
• Mount and level per instructions. See “UNIT
MOUNTING” on page 8
.
•
See
Figure 7 locations of piping connections in UNHv
unit.
See
Figure 1, Page 5 for locations of all knockouts and
openings in the cabinet.
Содержание UNHV09
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