Installation manual

10 English
• The outdoor unit is charged with refrigerant.
• Be sure to use both a spanner and torque wrench together, as shown in the
drawing, when connecting or disconnecting pipes to/from the unit.
(Refer to Fig. 15)
• Refer to “Table 3” for the dimensions of flare nut spaces.
• When connecting the flare nut, apply ester oil or ether oil to the flare
section (both inside and outside), and spin 3-4 times before screw-
ing in. (Refer to Fig. 16)
CAUTION
Over-tightening the flare nut may break it and/or cause the
refrigerant to leak.
NOTE
• Use the flare nut included with the unit main body.
Ta bl e 3
• Refer to “Table 3” to determine the proper tightening torque.
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may
follow the installation method mentioned below
After the work is finished, make sure to check that there is no gas leak.
When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque
suddenly increases. From that position, further tighten the flare nut the angle shown below:
Pipe size Tightening torque
Flare dimensions
A (mm)
Flare
φ 9.5 (3/8”) 32.7 – 39.9 N·m 12.8 – 13.2
φ 15.9 (5/8”) 61.8 – 75.4 N·m 19.3 – 19.7
Pipe size Further tightening angle Recommended arm length of tool
φ 9.5 (3/8”) 60 to 90 degrees Approx. 200mm
φ 15.9 (5/8”) 30 to 60 degrees Approx. 300mm
Torque wrench
Spanner
Pipe union
Flare nut
Fig. 15
Fig. 16
Coat here with ester or ether oil.
R0.4-0.8
A
90˚±0.5˚
45˚±2˚
01_EN_3P184443-6.fm Page 10 Monday, July 3, 2006 12:04 PM