Install Manual
IMPORTANT:
Page 29
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Refrigerant Piping Connection
TORQUE REQUIREMENTS
Excessive force can break the nut or damage the refrigerant piping. You must not exceed
torque
requirements shown in the table below.
2.
3.
versus a HVAC torque wrench) and that a socket style wrench cannot be used here.
Outer Diameter
of Pipe
inch (millimeter)
Stamp
lb·ft (N·m)
lb·ft (N·m)
N·m
N·m
N·m
N·m
N·m
N·m
N·m N·m
in
in
in
in
NOTE: Torque ratings in the table below are to be used if you have access to an HVAC torque
wrench. These are available for purchase from online retailers. However, it is possible to complete
installation of refrigerant line sets with conventional open-ended/crescent wrenches. It is
imperative, however, that you not overtighten the connector, and that once the lines have been
fully connected, and the valves have been opened, you follow the steps to check the pipe
connections for leaks (Refer to the Electrical & Gas Leak Checks section of this manual for more
information). If you do not feel comfortable attempting this, please contact a qualified HVAC
technician.
If you are using a 24K Air Handler with a 4-zone condenser, you will need to install the included line set adapter kit
to the outside unit, before the line set can be connected. This requires you to replace both of the connected
couplings that are on port A of the outside unit, so the 24K air handler can be adequately connected.
Installation Steps for Line Set Adapter Kit (for use with 24K Air Handler)
1. Unscrew the couplings from both
connectors of port A of the outside
unit by hand
2. Screw each of the provided couplings,
from the line set adapter kit, to the
appropriate connector of the outside
unit by hand.
3. Now, using an open-ended wrench, or
a crescent (adjustable-style) wrench,
tighten both of the couplings securely.
4. Once completed, revert back to Step 4: Connect Line Set
to the Outdoor Unit and continue the installation.
IMPORTANT:
Later in the installation process you will be asked to
check for leaks at the piping connections. Be sure to
include checking these adapters at both ends during
your check.
Line Set Adapter Kit