Toshiba RAV-SM562KRT-E, Руководство по установке

Страница: 12 / 180

EN 9
6
REFRIGERANT PIPING
(Unit : N•m)
Outer diam. of copper pipe Tightening torque
6.4 mm (diam.) 14 to 18 (1.4 to 1.8 kgf•m)
9.5 mm (diam.) 33 to 42 (3.3 to 4.2 kgf•m)
12.7 mm (diam.) 50 to 62 (5.0 to 6.2 kgf•m)
15.9 mm (diam.) 68 to 82 (6.8 to 8.2 kgf•m)
•
Tightening torque of flare pipe connections
Pressure of R410A is higher than that of R22. (Approx. 1.6 times) Therefore, using a torque wrench, tighten the
flare pipe connecting sections which connect the indoor and outdoor units of the specified tightening torque.
Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.
Flare at indoor unit side
Flare at outdoor unit side
Tightening connection
CAUTION
•
Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions.
Use a wrench to secure. Use a torque wrench to tighten.
Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten
the nut with a spanner and torque wrench as shown in the figure.
Flare nut Half union
Internally
threaded side Externally
threaded side