User Guide

'XHWRRXUSROLF\RIFRQWLQXRXVSURGXFWLQQRYDWLRQVRPHVSHFL¿FDWLRQVPD\FKDQJHZLWKRXWQRWL¿FDWLRQ
©
/*(OHFWURQLFV86$,QF(QJOHZRRG&OLIIV1-$OOULJKWVUHVHUYHG³/*´LVDUHJLVWHUHGWUDGHPDUNRI/*&RUS
REFRIGERANT DESIGN | 49
Refrigerant Piping Design & Layout Best Practices
Piping Connections
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 23 and 24).
2. Align the center of the refrigerant pipe and corresponding connection as shown in Figures 26 and 27.
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
Tubing cover
Figure 23: 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 27: Torque Wrench Tightening.
Figure 24: LSU180HSV4/LAU240HSV3 Outdoor
Unit Connection Cover Removal.
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter )
Torque wrench
:KHQWLJKWHQLQJWKHÀDUHQXWZLWKDWRUTXH
wrench, ensure the direction for tightening
follows the arrow on the wrench.
Figure 25: Pipe Attachment.
Figure 26: LSU090HSV4/LSU120HSV4 Out-
door Unit Piping Connection.
Tubing
Cover
Terminal
Block Cover
Terminal Block
Figure 27: LSU180HSV4/LAU240HSV3
Outdoor Unit Piping Connection.
Torque wrench
Liquid side piping
(Smaller diameter)
Gas side piping
(Bigger diameter)
Outdoor unit