Installation Guide

Page 20mrcool.com
Indoor Unit Installation
3. Using open ended wrenches (i.e. crescent or adjustable),
hold the points marked “1” and turn the nuts only at the
points marked “2” (select the appropriate wrench according
to the dimensions of the connector).
Outer Diameter
of Pipe (in/mm)
Stamp
Tightening Torque
(lb·ft / N·m)
Add. Tightening Torque
(lb·ft / N·m )
Ø0.25” (Ø 6.35mm)
1/4”
3/8”
1/2”
5/8”
11 lb•ft (14.91 N·m)
11.8lb•ft (16 N·m)
Ø0.375” (Ø 9.52mm)
18.4 lb•ft (24.95 N·m)
19.18lb•ft (26 N·m)
Ø0.5” (Ø12.7mm)
25.8 lb•ft (34.98 N·m)
26.55lb•ft (36 N·m)
Ø0.63” (Ø16mm) 33.19 lb•ft (45 N·m) 34.67lb•ft (47.01N·m)
TORQUE REQUIREMENTS
1. Excessive force can break the nut or damage the refrigerant piping. You must not exceed 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. Note that there may be differences in Torque Wrenches (i.e. automotive torque wrench versus a HVAC
torque wrench) and that a socket style wrench cannot be used here.
4. Ensure that the screw connectors do not skew as you
tighten them and work quickly.
5. After finishing the connection,
use the tape to wrap the
refrigerant pipe and
connecting cable together.
6. After you finish connecting
the quick connectors, pass
the drain hose and
refrigerant pipes through the
wall hole as shown here.
7 In order to prevent Quick Connect® parts from
being exposed to air, sound deadening pads
should be used during the installation.
8.Wrap the Quick
Connect® with the
sound deadening pads,
pack down the pads
tightly as shown here.
9. Wrap up the Quick
Connect® with the black
insulation material. For
the top exposed part, use
the white insulation
material (supplied in
Accessories box) to wrap
completely as shown
here.
10. At last, use tape to wrap the refrigerant pipe and
connecting cable together.
IMPORTANT: Before you
continue, it is essential that
you read the following
instructions carefully.
The Quick Connect
®
must be placed outside of the room.
Using the wall hole sleeve, cap and neoprene to seal the
wall hole.
NOTE:
1 2