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Refrigerant Piping Connections
Due to our policy of continuous product innovation, some specifications may change without notification.
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Outdoor Unit Connections
Outdoor Unit Connections
1. Remove the ODU front panel by loosening the fastening screws.
2. Align the center of the refrigerant piping and corresponding
connection as shown.
3. Refer to the figures at right for liquid and gas piping attachments
onto the outdoor unit.
4. Place a couple of drops of PVE refrigerant oil on outside of the
flare before assembling. Do not add any contaminants.
Tighten the flare nut initially by hand.
5. Finish tightening the flare nut with a torque wrench until the
wrench clicks. Follow torque guidelines in the table below. See
figures for correct connection points.
Figure 40: LVU120HCV, LVU180HCV, LVU240HCV, LVU300HCV
Outdoor Unit Piping Connection
When tightening the are nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
Table 15: Torque Wrench Tightening.
Pipe Size (in. OD) Outside Diameter (mm) Torque (lbs-ft)
1/4 6.35 13.0 - 18.0
3/8 9.52 24.6 - 30.4
1/2 12.7 39.8 - 47.7
5/8 15.88 45.4 - 59.3
3/4 19.05 71.5 - 87.5
Figure 41: Pipe Attachment.
Liquid
Vapor
Front, Side, and
Rear Connections
Available
REFRIGERANT PIPING CONNECTIONS
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