16
Outside Unit
Precautions when connecting pipes
• See the following table for flare part machining dimensions.
• See the following table for tightening torque.(Applying too much torque may cause the flares to crack.)
• After all the piping has been connected, use nitrogen to perform a gas leak check.
FLARE SHAPE and FLARE NUT TIGHTENING TORQUE
90°
±2
45°
±2
A
R=0.4~0.8
pipe size tightening torque(Ncm) A(mm) flare shape
Ø9.5 3270-3990 12.8-13.2
Ø12.7 4950-6030 16.2-16.6
Ø15.9 6180-7540 19.3-19.7
Installation
Union
CAUTION
• Always use a charge hose for service port connection.
• After tightening the cap, check that no refrigerant leaks are
present.
• When loosening a flare nut, always use two wrenches in
combination, When connecting the piping, always use a span-
ner and torque wrench in combination to tighten the flare nut.
• When connecting a flare nut, coat the flare(inner and outer
faces) with oil for R410A(PVE) and hand tighten the nut 3 to 4
turns as the initial tightening.
MFL67705803 2018. 9. 17. 오오 12:58 Page 16
Содержание MULTI V WATER IV ARWV100DAL4
Страница 65: ...MFL67705803 2018 9 17 오오 12 58 Page 800 ...