Lennox Merit 13HPX Series Installation Instructions Manual page 10

Line Set Isolation
REFRIGERANT LINE SET
FROM VERTICAL TO HORIZONTAL
ANCHORED HEAVY NYLON
WIRE TIE OR AUTOMOTIVE
MUFFLER-TYPE HANGER
WALL
STUD
NON−CORROSIVE
METAL SLEEVE
REFRIGERANT LINE SET
To hang line set from joist or rafter, use either metal strapping material
or anchored heavy nylon wire ties.
8 FEET (2.43 METERS)
STRAPPING
MATERIAL (AROUND
VAPOR LINE ONLY)
TAPE OR
WIRE TIE
FLOOR JOIST OR
ROOF RAFTER
506727−01
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The following illustrations are examples of proper refrigerant line set isolation:
TRANSITION
AUTOMOTIVE
MUFFLER-TYPE HANGER
STRAP LIQUID LINE TO
VAPOR LINE
LIQUID LINE
VAPOR LINE − WRAPPED
IN ARMAFLEX
INSTALLING
HORIZONTAL RUNS
WIRE TIE (AROUND
VAPOR LINE ONLY)
FLOOR JOIST OR
ROOF RAFTER
8 FEET (2.43 METERS)
NON−CORROSIVE
METAL SLEEVE
STRAP THE VAPOR LINE TO THE JOIST
OR RAFTER AT 8 FEET (2.43 METERS)
INTERVALS THEN STRAP THE LIQUID
LINE TO THE VAPOR LINE.
Figure 7. Line Set Installation
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REFRIGERANT LINE SET
VERTICAL RUNS (NEW CONSTRUCTION SHOWN)
NOTE Insulate liquid line when it is routed through areas where the
surrounding ambient temperature could become higher than the
temperature of the liquid line or when pressure drop is equal to or greater
than 20 psig.
OUTSIDE WALL
WOOD BLOCK
BETWEEN STUDS
TAPE OR
WIRE TIE
NOTE Similar installation practices should be used if line set is
to be installed on exterior of outside wall.
Page 10
INSTALLING
VAPOR LINE
WIRE TIE
INSIDE WALL
STRAP
NON−CORROSIVE
METAL SLEEVE
WIRE TIE
WOOD BLOCK
WIRE TIE
STRAP
SLEEVE
VAPOR LINE WRAPPED
WITH ARMAFLEX
OUTSIDE
WALL
LIQUID
LINE
PVC
CAULK
PIPE
FIBERGLASS
INSULATION
LIQUID LINE