Page of 34

Toshiba CARRIER RAV-SP180CT-UL Installation Manual: Refrigerant Piping And Evacuating

Toshiba air conditioner user manual.
Also See for CARRIER RAV-SP180CT-UL:
Service manual - 191 pages
Under Ceiling Type
4

REFRIGERANT PIPING AND EVACUATING

Refrigerant Piping
• The connecting sections of the refrigerant pipes are
provided at the positions in the figure below.
Upper side
Right
1. Use copper pipe with 0.03" (0.8 mm) or more
thickness.
(In case pipe size is Ø5/8" (15.9 mm), with 0.04" (1.0
mm) or more.)
2. Flare nut and flare works are also different from
those of the conventional refrigerant.
Take out the flare nut attached to the main unit of the
air conditioner, and use it.
REQUIREMENT
When the refrigerant pipe is long, provide support
brackets at intervals of 8'2" - 9'10" (2.5 - 3 m) to clamp
the refrigerant pipe. Otherwise, abnormal sound may
be generated.
IMPORTANT 4 POINTS FOR PIPING WORK
1. Remove dust and moisture from the inside of the
connecting pipes.
2. Tight connection (between pipes and unit)
3. Evacuate the air in the connecting pipes using
VACUUM PUMP.
4. Check the gas leakage. (Connected points)
Pipe size
Model
RAV-
name
Gas side
Pipe size
Liquid side
11-EN
* When using the drain
Rear side
pump kit sold separately,
the pipe can be drawn out
only from the upper side.
CAUTION
SP240, SP300,
SP180
SP360, SP420
type
type
1/2"
5/8"
(15.9 mm)
(12.7 mm)
1/4"
3/8"
(6.4 mm)
(9.5 mm)
Permissible Piping Length
and Height Difference
They vary according to the outdoor unit.
For details, refer to the Installation Manual attached to
the outdoor unit.
Flaring
• Cut the pipe with a pipe cutter.
Remove burrs completely.
Remaining burrs may cause gas leakage.
• Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured
for R410A are recommended.
However, the conventional
tools can be used by adjusting
projection margin of the
copper pipe.
▼ Projection margin in
flaring: B (Unit: in (mm))
Rigid (Clutch type)
Outer dia. of
copper pipe
1/4" - 5/8"
(6.4 - 15.9)
Outer dia. of copper pipe
1/4" (6.4) or 3/8" (9.5)
1/2" (12.7) or 5/8" (15.9)
▼ Flaring dia. meter size: A (Unit: in (mm))
Outer dia. of copper pipe
1/4" (6.4)
3/8" (9.5)
1/2" (12.7)
5/8" (15.9)
* In case of flaring for R410A with the
conventional flare tool, pull it out approx.
0.02" (0.5 mm) more than that for R22 to
adjust to the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
– 11 –
Installation Manual
Conventional
R410A tool used
tool used
0 - 0.02"
0.04" - 0.06"
(0 - 0.5)
(1.0 - 1.5)
Imperial
(Wing nut type)
0.06" - 0.08" (1.5 - 2.0)
0.08" - 0.1" (2.0 - 2.5)
A
+0
-0,02" (–0.4)
0.36" (9.1)
0.52" (13.2)
0.65" (16.6)
0.78" (19.7)
B
A

   Also See for Toshiba CARRIER RAV-SP180CT-UL

   Related Manuals for Toshiba CARRIER RAV-SP180CT-UL

Comments to this Manuals

Symbols: 0
Latest comments: