Sanyo 3-WAY ECO-i SPW-C0705DZH8 Instructions D'installation page 28

1155 type (12 horsepower)
Refrigerant tubing
1
Suction tube Brazed connection
2
Discharge tube Brazed connection Yes (ø15.88→ø19.05)
3
Liquid tube Brazed connection
4
Balance tube Flared connection
1305 type (14 horsepower)
Refrigerant tubing
1
Suction tube Brazed connection
2
Discharge tube Brazed connection Yes (ø19.05→ø22.22)
3
Liquid tube Brazed connection
4
Balance tube Flared connection
1405 type (16 horsepower)
Refrigerant tubing
1
Suction tube Brazed connection
2
Discharge tube Brazed connection Yes (ø19.05→ø22.22)
3
Liquid tube Brazed connection
4
Balance tube Flared connection
Connection Use supplied
method connector tube?
Yes (ø19.05→ø25.4)
Yes (ø9.52→ø12.7)
No
Connection Use supplied
method connector tube?
No
No
No
Connection Use supplied
method connector tube?
Yes (ø25.4→ø28.58)
No
No
Refrigerant tube port:
● Use caulking, putty, or a similar material to fill any gaps at
the refrigerant tube port (
dust or foreign substances from entering the unit.
* Perform this work even if the tubing is routed out in a
downward direction.
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
CAUTION
1. Be sure to use nitrogen. (Oxygen, CO
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.
26
) in order to prevent rainwater,
Tubing
cover
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)
Remote valve
Taping
, and CFC must not
2
Base plate
Pressure-
reducing
valve
(regulator)