Specifications - Toshiba RAV-SM304ATP-E Installation Manual

Are there scratches or dents on the existing pipes?
NO
Is it possible to operate the existing air conditioner?
YES
• After the existing air conditioner is operated in
cooling mode for approx. 30 minutes or longer,*
recover the refrigerant.
• For cleaning the pipes and recovering oil
• Refrigerant recovery: Pump down method
•
Remove the existing air conditioner from the piping
and carry out fl ushing (nitrogen pressure 0.5 MPa)
to remove any remains inside of the pipe.
Note: In case of twin pipes, also be sure to flush the
branching pipe.
Was largely discolored oil or a large quantity of
remains discharged? (When the oil
deteriorates, the color of the oil changes to a
muddy or black color.)
NO
Connect the indoor / outdoor units to the existing pipe.
• Use a fl are nut attached to the main unit for the
indoor / outdoor units. (Do not use the fl are nut of the
existing pipe.)
• Re-machine the fl are machining size to size for
R410A.
• (Airtight test), Vacuum dry, Refrigerant charge, Gas
leak check
Test run
27-EN
YES
Existing pipes: Cannot be used.
•
Use new pipes.
NO
Nitrogen gas pressure 0.5 MPa
(If there is discharge of remains, it is judged that a
large quantity of remains are present.)
YES
Clean the pipes or use new pipes.
Piping necessary to change the flare nut / machining
size due to pipe compression
1) Flare nut width: H
Copper
pipe outer Ø6.4 Ø9.5 Ø12.7
diameter
For R410A 17 22 26
H
Same as
For R22 24
above
2) Flare machining size: A
Copper
pipe outer Ø6.4 Ø9.5 Ø12.7
A
diameter
For R410A 9.1 13.2 16.6
For R22 9.0 13.0 16.2
Becomes a little larger for R410A
Do not apply refrigerator oil to the flare surface.
15
Specifi cations
Model
RAV-SM304ATP-E
RAV-SM304ATJP-E
RAV-SM404ATP-E
RAV-SM404ATJP-E
* Under 70 dBA
(mm)
(mm)
– 14 –
Sound power level (dB)
Cooling Heating
* *
* *
* *
* *
Weight (kg)
33
33
39
39
28-EN