Instructions / Assembly

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Refrigerant Piping Connection
1. Excessive force can break the connector or damage the refrigerant piping. You must not exceed the
torque requirements shown in the table below.
2. You can find the Outer Pipe Diameter stamped (in inches) on the valve set of the condenser. Refer to
this when finding and applying the torque values in the table below.
3. Please note that there may be differences in Torque Wrenches (i.e. automotive torque wrench versus
an HVAC torque wrench) and that a socket style wrench cannot be used in this installation.
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 over-tighten the connector, and that once the lines have
been fully connected, 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.
TORQUE REQUIREMENTS
FA06
FA09
FA12
FA16
3/8 in (9.5 mm)
1/2 in (12.7 mm)
3/4 in (19.1 mm)
1 in (25.4 mm)
18-20 lb/ft
(24.4-27.1 Nm)
30-35 lb/ft
(40.6-47.4 Nm)
45-50 lb/ft
(61.0-67.7 Nm)
60-65 lb/ft
(81.3-88.1 Nm)
Stamp
(on
connector)
Coupling Size
inch (millimeter)
Tightening Torque
lb-ft (N-m)
If you are using a 24K or greater capacity Air Handler with a 4-zone or 5 -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 air handler can be
connected.
Installation Steps for Line Set Adapter Kit (for use with 24K or greater capacity 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