Brazing Line Set Connections - Lennox Dave Signature Collection XC15 Installation Instructions Manual

Table 2. Refrigerant Line Set
Field
Connections
Model
Liquid Vapor
Line Line
−024
3/8 in. 3/4 in.
−030
(10 mm) (19 mm)
−036
−042
3/8 in. 7/8 in
(10 mm) (22 mm)
−048
3/8 in. 1−1/8 in.
−060
(10 mm) (29 mm)
If the XC15 is being used with either a new or existing
indoor coil which is equipped with a liquid line which served
as a metering device (RFCI), the liquid line must be
replaced prior to the installation of the XC15 unit. Typically
a liquid line used to meter flow is 1/4" in diameter and
copper.
INSTALLING LINE SET
Line Set Isolation This
procedures, which ensure proper refrigerant line set
isolation:
S
Installation of line set on horizontal runs is
illustrated in figure 16.
S
Installation of a transition from horizontal to
vertical is illustrated in figure 17.
S
Installation of line set on vertical runs is illustrated in
figure 18.
TO HANG LINE SET FROM JOIST OR
RAFTER, USE EITHER METAL STRAPPING
MATERIAL OR ANCHORED HEAVY NYLON
WIRE TIES.
STRAPPING MATERIAL
(AROUND SUCTION
LINE ONLY)
FLOOR JOIST OR
ROOF RAFTER
METAL
SLEEVE
TAPE OR
WIRE TIE
FLOOR JOIST OR
ROOF RAFTER
Figure 16. Refrigerant Line Set: Installing
Horizontal Runs
Recommended Line Set
Liquid Vapor L15
Line Line Line Sets
L15−41
3/8 in 3/4 in.
15 − 50 ft.
(10 mm) (19 mm)
(5 − 15 m)
L15−65
3/8 in. 7/8in
15 − 50 ft.
(10 mm) (22 mm)
(5 − 15m)
3/8 in. 1−1/8 in.
(10 mm) (29 mm) Fabricated
reference illustrates
WIRE TIE
(AROUND
SUCTION LINE
ONLY)
8 FEET
TAPE OR
WIRE TIE
8 FEET
STRAP THE SUCTION LINE TO
THE JOIST OR RAFTER AT 8 FEET
INTERVALS THEN STRAP THE
LIQUID LINE TO THE SUCTION
LINE.
ANCHORED HEAVY NYLON
WIRE TIE OR AUTOMOTIVE
MUFFLER-TYPE HANGER
Field
Figure 17. Refrigerant Line Set: Transition
IMPORTANT - REFRIGERANT LINES MUST NOT CONTACT WALL.
WOOD BLOCK
BETWEEN STUDS
NOTE − SIMILAR INSTALLATION
PRACTICES SHOULD BE USED
IF LINE SET IS TO BE INSTALLED
ON EXTERIOR OF OUTSIDE
WALL.
PVC PIPE
Figure 18. Refrigerant Line Set: Installing
Vertical Runs (New Construction Shown)

Brazing Line Set Connections

Use the following procedure to braze the line set to the new
air conditioner unit. Figure 19 on page 10 is provided as a
general guide for preparing to braze the line set to the air
conditioner unit.
Page 9
MUFFLER-TYPE HANGER
WALL
STUD
METAL SLEEVE
SUCTION LINE − WRAPPED
IN ARMAFLEX
from Vertical to Horizontal
OUTSIDE WALL
SUCTION LINE
SLEEVE
SUCTION LINE WRAPPED WITH
ARMAFLEX
OUTSIDE
LIQUID LINE
WALL
IMPORTANT! REFRIGERANT
LINES MUST NOT CONTACT
CAULK
FIBERGLASS INSULATION
AUTOMOTIVE
STRAP LIQUID LINE
TO SUCTION LINE
LIQUID LINE
LIQUID
LINE
WIRE TIE
INSIDE WALL
STRAP
SLEEVE
WIRE TIE
WOOD BLOCK
WIRE TIE
STRAP
STRUCTURE.
XC15 SERIES