Piping Connection - LG LAU090HYV Engineering Manual

Single Zone art Cool Premier Connections
Pipe connection for a Single Zone System
1. Remove the connection cover from the unit by loosening
the fastening screw (Figure 24).
2. Align the center of the refrigerant pipe and correspond-
ing connection as shown in Figure 25 and tighten the
flare nut by hand.
3. Tighten the flare nut with a torque wrench until the
wrench clicks. Follow the guidelines as outlined in Table
17 for the amount of torque to use.
When tightening the flare nut with torque wrench, ensure the
direction for tightening follows the arrow on the wrench.
Table 17: Torque Wrench Tightening
outside Diameter
(Inches)
1/4
3/8
1/2
5/8
3/4
Due to our policy of continuous product innovation, some specifications may change without notification.
inStallation & layout bESt PraCtiCES
Torque
(Lbs.-ft)
13-18
24.6-30.4
39.8-47.7
45.6-59.3
71.6-87.5
Figure 24: Heat Pump outdoor Unit Removal of Connection Cover
Figure 25: Heat Pump outdoor Unit Piping Connection

Piping Connection

1(L1) 2(L2) 1(L1) 2(L2) 3
Terminal Block
Cord
clamp
Power
Power
connecting
cord
cable
Connection cover
Outdoor unit
Liquid side piping
(Smaller diameter)
Torque wrench
Gas side piping
(Bigger diameter)
ReFRIGeRAnT DeSIGn | 45