Connecting Wide Tubing Side; Connecting Tubing Between Indoor And Outdoor Units - Sanyo SPW-X483GH56 Installation Instruction

Caution before Connecting Tubes Tightly
(1) Apply a sealing cap or water-proof tape to
prevent dust or water from entering the tubes
before they are used.
(2) Apply refrigerant lubricant to the matching
surfaces of the flare and union before connecting
them together. This helps to reduce gas leaks.
(Fig. 8-4)
(3) For proper connection, align the union tube and
flare tube with each other, then screw in the flare
nut lightly at first to obtain a smooth match. (Fig.
8-5)
Adjust the shape of the narrow tube (liquid tube)
using a tube bender at the installation site and
connect it to the narrow tubing side (liquid tubing
side) valve using a flare.

8-2. Connecting Wide Tubing Side

Cautions During Brazing
Replace air inside the tube with nitrogen gas to
prevent copper oxide film from forming during
the brazing process.
Do not allow the tubing to get too hot during
brazing.
The nitrogen gas inside the tubing may over-
heat, causing refrigerant system valves to
become damaged. Therefore allow the tubing to
cool between brazing.
8-3. Connecting Tubing between Indoor and
Outdoor Units
(1) Tightly connect the indoor-side refrigerant tubing
extended from the wall with the outdoor-side
tubing.
(2) To fasten the flare nuts, apply specified torque as
follows:
Tightening Torque, Approximate
Tube Diameter
6.35 mm (1/4")
9.52 mm (3/8")
12.7 mm (1/2")
15.88 mm (5/8")
19.05 mm (3/4")
25.4 (1") 28.58 (1-1/8")
Bolt to fasten flange
140 — 180 kg-cm
(120 — 160 Ibs-in.)
340 — 420 kg-cm
(300 — 360 Ibs-in.)
490 — 610 kg-cm
(430 — 530 Ibs-in.)
680 — 820 kg-cm
(590 — 710 Ibs-in.)
1000 — 1200 kg-cm
(870 — 1040 Ibs-in.)
300 — 350 kg-cm
(260 — 310 Ibs-in.)
Apply refrigerant
lubricant here and here
Union
Torque wrench
Indoor unit
72 72
S4179544 S4179544
0129_M_I
Fig. 8-4
Flare nut
0130_M_I
Fig. 8-5
Spanner
Outdoor unit
0131_C_I
Fig. 8-6