Sanyo SAP-CMRV1426EH-F, SAP-CMRV1926EH Tubing Connections, Tube Dia Tightening Torque

NOTE

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 9)

(3)Remove the flare nut from the unit and be sure to mount it on the copper tube.

(4) Make a flare at the end of copper tube with a flare tool.* (Figs. 10 and 11)

(*Use “RIDGID” or equivalent.)

	If the special R410A
NOTE	flare tool is used:
A good flare should have the following characteristics:
● inside surface is glossy and smooth.		0	– 0.5 mm
● edge is smooth.

Copper tubing

Reamer

Fig. 9

If the previous flare tool (clutch-type) is used:

1.2 mm

Adjust so that the amount of tube protrusion is as shown in the figure.

English

●tapered sides are of uniform length.

3-5. Caution Before Connecting Tubes Tightly

a)Be sure to apply a sealing cap or water-proof tape to prevent dust or water from getting into the tubes before they are used.

b)Be sure to apply refrigerant lubricant to the matching surfaces of the flare and union before connecting them together. This is effective for reducing gas leaks.

(Fig. 12)

c)For proper connection, align the union tube and flare tube straight with each other, then screw in the flare nut lightly at first to obtain a smooth match. (Fig. 13)

3-6. Tubing Connections

a)Temporary connection:

Screw in 3 – 5 rotations by hand. (Fig.14)

b)To fasten the flare nuts, apply specified torque as:

Table 4

Tube Dia.	Tightening Torque
6.35 mm	14 – 18 N·m (140 – 180 kgf · cm)
9.52 mm	34 – 42 N·m (340 – 420 kgf · cm)
12.70 mm	49 – 61 N·m (490 – 610 kgf · cm)
15.88 mm	68 – 82 N·m (680 – 820 kgf · cm)

Service valve on narrow tube side

Service valve on wide tube side

Fig. 10

Flare nut

Copper tubing

Flare tool

Fig. 11

Apply refrigerant

lubricant here and here

Fig. 12

Union Flare nut

Fig. 13

B

A

Apply the provided labels to the indoor and outdoor unit tubing connectors to prevent errors in connections.

Fig. 14

9