LINESETISOLATION
Thisreferenceillustratesprocedures,whichensureproper
refrigerantlinesetisolation:
Linesetfor heatpumpapplicationscannotbeinstalled
underground.For more informationsee the Lennox
Refrigerant Piping Design and Fabrication Guidelines, or
contact Lennox Technical Support Product Applications
for assistance.
• Installation of line set on horizontal runs is
illustrated in figure 10.
• Installation of line set on vertical runs is illustrated in
figure 11.
• Installation of a transition from horizontal to
vertical is illustrated in figure 12.
TO HANG LINE SET FROM JOIST OR
RAFTER, USE EITHER METAL STRAPPING WIRE TIE
MATERIAL OR ANCHORED HEAVY NYLON (AROUND
WIRE TIES. SUCTION LINE
STRAPPING MATERIAL ONLY)
(AROUND SUCTION
LINE ONLY)
TAPE OR
WIRE TIE
8 FEET
METAL
SLEEVE
TAPE OR
WIRE TIE
STRAP THE SUCTION LINE TO
THE JOIST OR RAFTER AT 8 FEET
INTERVALS THEN STRAP THE
LIQUID LINE TO THE SUCTION
LINE.
FLOOR JOIST OR
ROOF RAFTER -- ,b _
IMPORTANT - REFRIGERANT LINES
MUST NOT CONTACT WALL.
OUTSIDE WALL SUCTION LINE
NOTE - Similar installation
practices should be used if
line set is to be installed on
exterior of outside wall.
SLEEVE
WIRE TIE
LIQUID LINE
SUCTION LINE WRAPPED
WITH ARMAFLEX
IMPORTANT!
CONTACT
STRUCTURE.
PVC _ CAULK
PIPE
FIBERGLASS
INSULATION
WOOD BLOCK
WIRE TIE
STRAP
Figure 10. Refrigerant Line Set: Installing Horizontal
ANCHORED HEAVY
NYLON WIRE TIE
\
/ /
WAU /
STU[ /
METAL SLEEVE
Runs
! _ STRAPUQU_DUNE
TO SUCTION LINE
\
X LIQUID LINE
SUCTION LINE - WRAPPED IN
ARMAFLEX
Figure 11. Refrigerant Line Set: Installing Vertical
Runs (New Construction Shown)
AUTOMOTIVE
MUFFLER-TYPE HANGER
WALL
STUD
STRAP LIQUID LINE TO
SUCTION LINE
METAL SLEEVE
UIDLINE
SUCTIONLINE-WRAPPEDIN
ARMAFLEX
Figure 12. Refrigerant Line Set: Transition from Vertical to Horizontal
Page 7
13ACD SERIES
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