Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
ReFRIGeRAnT DeSIGn
| 45
Refrigerant Piping Design & Layout Best Practices
Piping Connection
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.
Figure 24: Heat Pump outdoor Unit Removal of Connection Cover
Figure 25: Heat Pump outdoor Unit Piping Connection
inStallation & layout bESt PraCtiCES
Connection cover
Terminal Block
1(L1) 2(L2)
1(L1) 2(L2)
3
Power
connecting
cable
Power
cord
Cord
clamp
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
outside Diameter
(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
3/4
71.6-87.5
Table 17: Torque Wrench Tightening
