Carrier P5 Series Owners And Installation Manual

Carrier P5 Series Owners And Installation Manual Manual pdf 30 page image

28a. Remove the indoor pipe flare nut. ( Check that there is no debris inside. )b. Align the center of the flare surface, and tighten the indoor pipe union andconnection pipe flare nut with a torque wrench or double-ended wrench.( Figure. 15 )While aligning the center of the flare surface, tighten the nut by hand, hold theunion side with a wrench and tighten the nut according to the specifiedtightening torque with a torque wrench.Pay careful attention to the following points when installing the refrigerant pipes.• Hold the pipe with one wrench while tightening the connections with a torquewrench or double-ended wrench.Be careful not to damage the flare nut threads.• If the tightening torque is insufficient, gas will leak from the connection.• If it is too strong, the flare will be damaged.Tighten the nut with the torque shown in Table 1.• Do not bend the pipe more than three times at one place.• When extending the rolled pipe, straighten the pipe by unwinding as shownin Figure 14.1) Connecting Pipe to the Indoor UnitFigure 14• Repeat the procedure for flaring the tube to connect to the outdoor unit.• Tighten the flare nut of the connection pipe at the outdoor unit valve. ( Figure. 16 )2) Connecting the Interconnecting Pipe to the Outdoor Unit ValveTorque wrench ordouble-ended wrenchOutdoor sideIndoor side Figure 15Table 16.35 mm (1/4”) 180 1812.7 mm (1/2”) 560 5515.88 mm (5/8”) 660 6519.05 mm (3/4”) 1020 100Flare nut Tightening(kgf-cm) Tourque(Nm)CONNECTING THE PIPINGFigure 16Interconnectingpipework(Gas pipe)Three way valve(Liquid pipe)Two way valve