Hokkaido HCND 261 G, Инструкция по эксплуатации

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IN-26
Monosplit “Wall” Personal Line Constant Speed - Section 5: Installation
3. Esecuzione dei collegamenti frigoriferi
Remember to apply refrigerant synthetic oil on flares’ back and on flare nut’s inside before fastening the flare
nuts, so as to assure the connections’ tightness.
Always use a tube bender for bending the pipings, and take care that radius of curvature is always wide
enough, so as to avoid narrowings on pipings.
Carry out connection on gas side first, and then on liquid side, as piping on gas side has a larger diameter and
requires wider operation distances.
CAUTION:
Always centre the piping on Outdoor Units’ refrigerant fitting before screwing by hand the flare nut
and carrying out definitive tightening. Neglecting this device will cause damages to flare nuts‘ threads and to
refrigerant fittings. Moreover, flares will be deformed with consequent refrigerant leakages.
Use a spanner for holding still the Outdoor Unit’s refrigerant fitting and avoiding its torsion. Use a torque
wrench for tightening flare nuts. Respect recommended fastening torques.
Piping diameter (Ø) Fastening torque
Liquid side: 6.35mm (1/4”)
Gas side: 9.52mm (3/8”)
17.6 N•m
41.2 N•m
Gas side: 12.7mm (1/2”)
53.9 N•m
4. Installation of drain elbow on Outdoor Unit
This accessory, provided with the Unit, allows connection of a drain piping for condensate or defrosting water.
Avoid to install the drain elbow in places where outdoor temperatures are very low (about or lower than 0°C)
for long time periods.
2. Pipings’ cutting and flaring
Cut pipings according to the desired length, by using the special roller pipe cutter.
After finishing operation, remove the burr from pipings‘ ends by using the deburring tool.
Insert flare nut on piping before carrying out the flaring.
Correct Wrong
Lean
Damage of flare Crack Partial Too outside
Example of flaring:
OK
NO NO NO NO NO
Flare tooling die
“A”
Dimension “A”
Pipe diameter:
6.35 mm (1/4”)
9.52 mm (3/8”)
12.7 mm (1/2”)
“A” (mm):
0.7~1.3
1.0~1.6
1.0~1.6
Flare tool