27
Refrigerant Piping Connections
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REFRIGERANT PIPING CONNECTIONS
Refrigerant Piping Connections
•
)RU0XOWL96RXWGRRUXQLWVSLSLQJFDQEHLQVWDOOHGLQRQHRIIRXU
directions: front, rear, right, and bottom. Whatever direction is cho-
sen, plug the access holes with field-provided putty or insulation to
fill all gaps.
Figure 27: Outdoor Unit Refrigerant Piping Connection Options.
Model
Liquid Conn.
LQ
Type
9DSRU&RQQ
LQ
Type
ARUN038GSS4
3/8
Brazed
5/8
Brazed
ARUN048GSS4
3/8
Brazed
5/8
Brazed
ARUN053GSS4
3/8
Brazed
3/4
Brazed
Table 14: Outdoor Unit Refrigerant Piping Connections.
Refrigerant
Charging Port
Liquid Pipe
Vapor Pipe
Bottm Access Hole for Liquid / Vapor Pipe Connections
Vapor Pipe
Liquid Pipe
Wet Towel
Figure 28: Bottom Access Hole.
Access Hole Knock Out
for Liquid / Vapor Piping
Access Hole Knock Out
for Liquid / Vapor Piping
Figure 29: Close Up of the Front / Back Access Holes.
Insects or small animals entering the outdoor unit may cause a short
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physical injury, or death.
Insects or small animals entering the outdoor unit may cause a short
FLUFXLWLQWKHHOHFWULFDOER[ZKLFKPD\OHDGWRXQLWIDLOXUH
WARNING
• If piping from the left / right or bottom, use the access holes on the
base pan.
Do not damage the piping / base while knocking out
the holes.
• Remove any burrs that may have been generated while knocking
out the access holes.
• Add a protection sleeve to prevent damage when passing the
wiring through the access holes.
• After piping installation, block any holes in the front or side panels
to prevent animals or foreign objects from entering the outdoor unit
and damaging the wiring / components.
• Pipe system connection is done by connecting from the end of the
pipe to the branching pipes, and the refrigerant pipe coming out
of the outdoor unit is divided at the end to connect to each indoor
unit.
• Flare connections are used to connect the piping on the indoor
units, and braze connections are used to connect the piping on
the outdoor unit (see piping dimensions below), Y-branches, and
headers.
Figure 30: Location of the Refrigerant Charging Port and the Liquid /
Vapor Piping.
Outdoor Unit Connections