Connect Pipes - AUX NFH Serie Manual De Instalación Y Usuario

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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
6.6.
Radius
Outer Diameter of Pipe (mm)
Ø 6.35 (Ø 0.25")
Ø 9.52 (Ø 0.375")
Ø 12.7 ( Ø 0.5")
Ø 16 ( 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.
This unit must be installed by a professional according RD 795/2010, RD 1027/2007 and RD 238/213
≥10cm (4in)
Fig. 6.6
TORQUE REQUIREMENTS
Tightening Tor
1,500 (11lb ft)
2,500 (18.4lb ft)
3,500
4,500
Instructions for Connecting Piping to
Indoor Unit
1. Align the center of the two pipes that you will
connect. See Fig. 6.7.
Indoor unit tubing
2. Tighten the flare nut as tightly as possible by
hand.
3. Using a spanner, grip the nut on the unit
tubing.
4. 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.
Add. Tightening Tor
95
Flare nut
Pipe
Fig. 6.7
Fig. 6.8
1,600 (11.8lb ft)
2,600 (19.18lb ft)
3,600
4,700

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