Connect Pipes - Kaden KS09 Installation Manual

6. Place flaring tool onto the form.
7. Turn the handle of the flaring tool clockwise until the pipe is
fully flared.
8. Remove the flaring tool and flare form, then inspect the end
of the pipe for cracks and even flaring.
Step 4: Connect pipes
When connecting refrigerant pipes, be careful not to use
excessive torque or to deform the piping in any way.
You should first connect the low-pressure pipe, then
the high-pressure pipe.
Minimum bend radius
When bending connective refrigerant piping, the minimum
bending radius is 10cm. See Fig.5.6
Torque Requirements
Outer Diameter of Pipe (mm)
Ø 6.35 (Ø 0.25")
Ø 9.52 (Ø 0.375")
Ø 12.70 (Ø 0.5")
Ø 15.88 (Ø 0.63")
Do not use excessive torque
Excessive force can break the nut or damage the refrigerant piping. You must not exceed torque requirements
shown in the table above.
J3387_Kaden_Installer_Manual_050917.indd 27
Radius ≥10cm (4in)
Fig. 5.6
Tightening Torque (N•m)
Instructions for connecting
piping to indoor unit
1. Add refrigerant oil to the flare faces.
2. Align the center of the two pipes that you will connect.
See Fig. 5.7
Indoor unit tubing
Fig. 5.7
3. Tighten the flare nut as tightly as possible by hand.
4. Using a spanner, grip the nut on the unit tubing.
5. While firmly gripping the nut on the unit tubing, use a torque
wrench to tighten the flare nut according to the torque
values in the Torque Requirements table below.
Loosen the flaring nut slightly, then tighten again.
Fig. 5.8
Add. Tightening Torque (N•m)
15
25
35
45
Kaden Installation Manual | 27
Flare nut Pipe
16
26
36
47
5/09/2017 9:08 AM