Lennox TPA036H4N4 Installation Instructions Manual page 9

Field Connections
Models
Liquid Line
TPA036H4N4
3/8 in. (10 mm)
TPA042H4N4
TPA048H4N4
TPA060H4N4 3/8 in. (10 mm)
LINE SET
Line Set Isolation The following illustrations are
examples of proper refrigerant 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
HORIZONTAL RUNS
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)
FLOOR JOIST OR
ROOF RAFTER
TAPE OR
WIRE TIE
FLOOR JOIST OR
ROOF RAFTER
Table 2. Refrigerant Line Set
Vapor Line
7/8 in (22 mm)
1−1/8 in. (29 mm)
INSTALLATION
TRANSITION
AUTOMOTIVE
MUFFLER-TYPE HANGER
STRAP LIQUID LINE TO
VAPOR LINE
LIQUID LINE
VAPOR LINE − WRAPPED
IN ARMAFLEX
INSTALLING
WIRE TIE (AROUND
VAPOR LINE ONLY)
TAPE OR
WIRE TIE
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 5. Line Set Installation
Inches (mm)
Recommended Line Set
Liquid Line Vapor Line
3/8 in. (10 mm) 7/8 in (22 mm)
3/8 in. (10 mm) 1−1/8 in. (29 mm)
IMPORTANT Refrigerant lines must not contact structure.
NOTE Similar installation practices should be used if line set is
to be installed on exterior of outside wall.
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.
IMPORTANT
OUTSIDE WALL
WOOD BLOCK
BETWEEN STUDS
WARNING Polyol ester (POE) oils used
refrigerant absorb moisture very quickly. It is very important that the
refrigerant system be kept closed as much as possible. DO NOT
remove line set caps or service valve stub caps until you are ready
to make connections.
Page 9
L15 Line Set
L15−65 15 ft. − 50 ft. (4.6 m − 15 m)
Field Fabricated
INSTALLING
Refrigerant lines must not contact wall
VAPOR LINE
SLEEVE
VAPOR LINE WRAPPED
WITH ARMAFLEX
OUTSIDE
WALL
LIQUID
LINE
PVC
CAULK
PIPE
FIBERGLASS
INSULATION
with
LIQUID LINE
WIRE TIE
INSIDE WALL
STRAP
NON−CORROSIVE
METAL SLEEVE
WIRE TIE
WOOD BLOCK
WIRE TIE
STRAP
HFC−410A
TPA*H4 SERIES