Lennox Merit Series 13ACX Installation Instructions Manual page 7

moisture−free system. Failure to install the filter drier will
void the warranty. A replacement filter drier is available
from Lennox. See Brazing Connections on page 8 for
special procedures on brazing filter drier connections to
the liquid line.
LIQUID LINE
LINE
SERVICE VALVE
OUTDOOR
UNIT
Figure 10. Typical Liquid Line Filter Drier
Installation
LINE SET ISOLATION
This following illustrations provide best practices on
ensuring proper refrigerant line set isolation:
S
Installation of line set on horizontal runs is
illustrated in figure 11.
S
Installation of line set on vertical runs is illustrated in
figure 12.
S
Installation of a transition from vertical to
horizontal is illustrated in figure 13.
TO HANG LINE SET FROM JOIST OR RAFTER, USE EITHER METAL STRAPPING
MATERIAL OR ANCHORED HEAVY NYLON WIRE TIES.
8 FEET
STRAPPING MATERIAL
(AROUND SUCTION
LINE ONLY)
FLOOR JOIST OR
ROOF RAFTER
METAL
SLEEVE
TAPE OR
WIRE TIE
FLOOR JOIST OR
ROOF RAFTER
Figure 11. Refrigerant Line Set: Installing Horizontal
BRAZE CONNECTION
POINTS
LIQUID
LIQUID LINE
FILTER DRIER
WIRE TIE
(AROUND
SUCTION LINE
ONLY)
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.
Runs
WOOD BLOCK
BETWEEN STUDS
NOTE − Similar installation
practices should be used if
line set is to be installed on
exterior of outside wall.
LINE
SUCTION LINE WRAPPED
IMPORTANT!
REFRIGERANT
LINES MUST NOT
CONTACT
STRUCTURE.
PVC
PIPE
Figure 12. Refrigerant Line Set: Installing Vertical
Runs (New Construction Shown)
ANCHORED HEAVY NYLON
WIRE TIE OR AUTOMOTIVE
MUFFLER-TYPE HANGER
Figure 13. Refrigerant Line Set: Transition
Page 7
IMPORTANT - REFRIGERANT LINES
MUST NOT CONTACT WALL.
OUTSIDE WALL
SUCTION LINE
SLEEVE
WITH ARMAFLEX
LIQUID LINE
OUTSIDE
WALL
CAULK
FIBERGLASS
INSULATION
MUFFLER-TYPE HANGER
WALL
STUD
METAL SLEEVE
SUCTION LINE − WRAPPED
IN ARMAFLEX
from Vertical to Horizontal
LIQUID LINE
WIRE TIE
INSIDE WALL
STRAP
SLEEVE
WIRE TIE
WOOD BLOCK
WIRE TIE
STRAP
AUTOMOTIVE
STRAP LIQUID LINE
TO SUCTION LINE
LIQUID LINE
13ACX SERIES