Refrigerant Tube Port; Tightening Torque For Each Cap; Precautions For Brazing - Sanyo SPW-C0705DZH8 Technical Data Manual

4. Installation Instructions
115 type (12 horsepower)
Connection
Refrigerant tubing
1 Suction tube Brazed connection Yes (ø19.05
2
Discharge tube Brazed connection Yes (ø15.88
3
Liquid tube Brazed connection
4
Balance tube Flared connection
130 type (14 horsepower)
Connection
Refrigerant tubing
1 Suction tube Brazed connection
2 Discharge tube Brazed connection Yes (ø19.05
3 Liquid tube Brazed connection
Balance tube Flared connection
4
140 type (16 horsepower)
Connection
Refrigerant tubing
1 Suction tube Brazed connection Yes (ø25.4
2
Discharge tube Brazed connection Yes (ø19.05
3 Liquid tube Brazed connection
4 Balance tube Flared connection
Use supplied
method connector tube?
ø25.4)
ø19.05)
Yes (ø9.52 ø12.7)
No
Use supplied
method connector tube?
No
ø22.22)
No
No
Use supplied
method connector tube?
ø28.58)
ø22.22)
No
No

Refrigerant tube port:

Use caulking, putty, or a similar material to fill any gaps
at the refrigerant tube port ( ) in order to prevent
rainwater, dust or foreign substances from entering the
unit.
* Perform this work even if the tubing is routed out in a
downward direction.
Tubing
cover
Tubing routed out forward
Flare nut
Tighten each cap as specified below.

Tightening torque for each cap

Service port cap
(width 15 mm)
Valve cap
(width 22 mm)
Flare nut
(valve dia. ø9.52)
Precautions for brazing
Be sure to replace the air inside the tube with nitrogen
to prevent oxide film from forming during the brazing
process.
Be sure to use a damp cloth or other means to cool the
valve unit during brazing.
Work method
Field-supply tube
Brazing locations Taping
CAUTION
1. Be sure to use nitrogen. (Oxygen, CO
not be used.)
2. Use a pressure-reducing valve on the nitrogen tank.
3. Do not use agents intended to prevent the formation of
oxide film. They will adversely affect the refrigeration
oil, and may cause equipment failure.
4. The balance tube is not used if only 1 outdoor unit is
installed.
Use the unit in the same conditions as when it was
shipped from the factory.
2-41
Design of 3-WAY ECO-i SYSTEM
Base plate
Tubing routed out downward
Valve cap
Service port cap
7 – 12 N · m (70 – 120 kgf · cm)
20 – 25 N · m (200 – 250 kgf · cm)
34 – 42 N · m (340 – 420 kgf · cm)
Pressure-
reducing
Remote valve
valve
(regulator)
, and CFC must
2
1
2
3
4
5
6
7
8