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50 | reFrIGerant deSIGn
Art Cool
™
Mirror W
all Mounted Engineering Manual
refrigerant Piping System Layout
inSTAllATion & lAyouT beST PrACTiCeS
Single zone Art Cool Mirror outdoor unit Connections
1. Remove the tubing cover from the unit by loosening the fastening screws (Figures 26 and 27).
2. Align the center of the refrigerant pipe and corresponding connection as shown in Figures 29 and 30.
3. 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.
4. Finish tightening the flare nut with a torque wrench until the wrench clicks See Figure 28.
Tubing cover
Figure 26: LSU090HSV4/LSU120HSV4
outdoor Unit Connection Cover Removal.
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 25: Torque Wrench Tightening.
Figure 27: LSU180HSV outdoor Unit Connec-
tion Cover Removal.
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter )
Torque wrench
When tightening the flare nut with a torque
wrench, ensure the direction for tightening
follows the arrow on the wrench.
Figure 28: Pipe Attachment.
Figure 29: LSU090HSV4/LSU120HSV4 out-
door Unit Piping Connection.
Tubing
Cover
Terminal
Block Cover
Terminal Block
Figure 30: LSU180HSV4 outdoor Unit
Piping Connection.
Torque wrench
Liquid side piping
(Smaller diameter)
Gas side piping
(Bigger diameter)
Outdoor unit
