Draining The Water; Refrigerant Piping Connection - Toshiba RAS-05J2AVG-TR Installation Manual

Draining the Water

• Holes are provided on the base plate of the outdoor unit to ensure that the
defrost water produced during heating operations is drained off efficiently.
If a centralized drain is required when installing the unit on a balcony or
wall, follow the steps below to drain off the water.
1. Proceed with water-proofing by installing the water-proof rubber caps in
the 2 elongated holes on the base plate of the outdoor unit. [How to install
the water-proof rubber caps]
1) Place four fingers into each cap, and insert the caps into the water
drain holes by pushing them into place from the underside of the base
plate.
2) Press down on the outer circumferences of the caps to ensure that
they have been inserted tightly.
(Water leaks may result if the caps have not been inserted properly, if
their outer circumferences lift up or the caps catch on or wedge against
something.)
2. Install the drain nipple and a commercially available drain hose (with
16 mm inside diameter), and drain off the water.
(For the position where the drain nipple is installed, refer to the installation
diagram of the indoor and outdoor units.)
• Check that the outdoor unit is horizontal, and route the drain hose at a
downward sloped angle while ensuring that it is connected tautly.
Base plate
Drain nipple
Do not use ordinary garden hose, but one can flatten and preven water
from draining.

Refrigerant Piping Connection

Flaring
1. Cut the pipe with a pipe cutter.
90°
2. Insert a flare nut into the pipe and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
RIDGID (clutch type)
Outer dia.of copper pipe
Ø6.35
Ø9.52
Ø12.70
Pipes thickness
1122950109_S04_182x257_52p_S_p70_181217_EN+TR+RU.indd 11
Water-proof rubber caps
(supplied with the outdoor unit)
Base plate
Drain nipple
Commercially available drain hose
Obliquity Roughness Warp
Conventional tool
R32 tool used
used
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
0 to 0.5 1.0 to 1.5
0.8 mm or more
IMPERIAL (wing nut type)
A
Outer dia.of copper pipe
Die
Pipe
Pipes thickness
CAUTION
• Do not scratch the inner surface of the flared part when removing burrs.
• Flare processing under the condition of scratches on the inner surface
of flare processing part will cause refrigerant gas leak.
Tightening connection
Align the centers of the connecting pipes and tighten the flare nut as far as
possible with your fingers. Then tighten the nut with a spanner and torque
wrench as shown in the figure.
Half union
Externally
threaded side
Use a wrench to secure.
CAUTION
Do not apply excess torque. Otherwise, the nut may crack depending on
the conditions.
Outer dia.of copper pipe
Ø6.35 mm
Ø9.52 mm
Ø12.70 mm
• Tightening torque of flare pipe connections
The operating pressure of R32 is
higher than that of R22
(approx. 1.6 times). It is therefore
necessary to firmly tighten the flare pipe
connecting sections (which connect the
indoor and outdoor units) up to the
specified tightening torque. Incorrect
connections may cause not only a
gas leakage, but also damage to the
refrigeration cycle.
9
R32
Ø6.35 1.5 to 2.0
Ø9.52 1.5 to 2.0
Ø12.70 2.0 to 2.5
0.8 mm or more
Flare nut
Internally
threaded side
Use a torque wrench to tighten.
(Unit : N·m)
Tightening torque
16 to 18 (1.6 to 1.8 kgf·m)
30 to 42 (3.0 to 4.2 kgf·m)
50 to 62 (5.0 to 6.2 kgf·m)
Flare at
indoor unit side
Flare at
outdoor unit side
12/25/2018 10:46:55 AM
EN