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Refrigerant Piping Connections
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REFRIGERANT PIPING CONNECTIONS
Outdoor Unit
Torque wrench
Liquid Piping
(Smaller diameter)
Gas Piping
(Larger diameter)
Single Zone Wall Mount Outdoor Unit Connections (240HEV)
Tubing
Cover
Conduit Panel
Cover
Terminal Block
240HEV
Screw
Outdoor Unit Connections
Figure 55: Outdoor Unit Cover Removal (240HEV)
Figure 57: Outdoor Unit Piping Connection (240HEV)
1. Remove the tubing cover by loosening the fastening screws (Figure 55).
2. Align the center of the refrigerant pipe and corresponding
connection as shown in Figure 56.
3. Refer to Figure 57 for correct liquid and gas pipe attachment onto
outdoor unit.
4. Place a couple of drops of refrigerant oil on the opening rim of the
flare before assembling. Ensure you 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 Table 27.
Figure 56: Pipe Attachment
Table 27: Torque Wrench Tightening
Outside Diame-
ter (inches)
Torque (lbs-ft)
1/4
13-18
3/8
24.6-30.4
1/2
39.8-47.7
5/8
45.6-59.3
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