MrCool Advantage Series - Pipe Bending and Torque Requirements

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REFRIGERANT PIPING CONNECTION
6
6. Place aring tool onto the form.
7. Turn the handle of the aring tool clockwise until
the pipe is fully ared.
8. Remove the aring tool and are form, then inspect
the end of the pipe for cracks and even aring.
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 rst connect the low-pressure pipe, then the high-pressure pipe.
When bending refrigerant piping, the minimum bending radius is 10 cm. See Fig. 6.6.
MINIMUM BEND RADIUS
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ndtheOuterPipeDiameterstamped(ininches)onthevalvesetofthecondenser.Refer
tothiswhenndingandapplyingthetorquevaluesinthetablebelow.
3. NotethattheremaybedierencesinTorqueWrenches(i.e.automotivetorquewrenchversusa
HVAC torque wrench) and that a socket style wrench cannot be used here.
Outer Diameter of Pipe
(in/mm)
Tightening Torque
(lb·ft/N·m)
Flare Dimension (B)
(in/mm)
Flare Shape
Ø 0.25" (Ø 6.35 mm) 13.28-14.75 lb·ft (18-20 N·m) 0.33"-0.34" (8.4-8.7 mm)
Ø 0.375" (Ø 9.52 mm) 23.60-28.76 lb·ft (32-39 N·m) 0.52"-0.53" (13.2-13.5 mm)
Ø 0.5" (Ø 12.7 mm) 36.14-43.52 lb·ft (49-59 N·m) 0.64"-0.65" (16.2-16.5 mm)
Ø0.63" (Ø 16 mm) 42.04-52.37 lb·ft (57-71 N·m) 0.76"-0.78" (19.2-19.7 mm)
Ø 0.75" (Ø 19 mm) 49.42-74.49 lb·ft (67-101 N·m) 0.91"-0.93" (23.2-23.7 mm)