Functions To Be Implemented Locally - Toshiba RAV-SP242AT2P-UL Installation Manual

12

Functions to be implemented locally

Handling existing pipe
■
When using the existing pipe, carefully check for the following:
•
Wall thickness (within the specifi ed range)
• Scratches and dents
• Water, oil, dirt, or dust in the pipe
• Flare looseness and leakage from welds
• Deterioration of copper pipe and heat insulator
Cautions for using existing pipe
•
Do not reuse a fl are nut to prevent gas leaks.
Replace it with the supplied flare nut and then process it to a flare.
• Blow nitrogen gas or use an appropriate means to keep the inside of the pipe clean. If discolored oil or much
residue is discharged, wash the pipe.
• Check welds, if any, on the pipe for gas leaks.
When the pipe corresponds to any of the following, do not use it. Install a new pipe instead.
•
The pipe has been opened (disconnected from indoor unit or outdoor unit) for a long period.
•
The pipe has been connected to an outdoor unit that does not use refrigerant R32, R410A.
•
The existing pipe must have a wall thickness equal to or larger than the following thicknesses.
Reference outside
Wall thickness (in (mm))
diameter (in (mm))
3/8" (9.5) 0.03" (0.8)
5/8" (15.9) 0.04" (1.0)
• Do not use any pipe with a wall thickness less than these thicknesses due to insuffi cient pressure capacity.
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Refrigerant recovery
■
When recovering the refrigerant in situations such as when relocating an indoor unit or outdoor unit, the recovery
operation can be performed by operating the SW01 and SW02 switches on the P.C. board of the outdoor unit.
A cover for the electric parts has been installed in order to provide protection from electric shocks while work is
being performed. Operate the service switches and check the LED displays with this electric parts cover in place.
Do not remove this cover while the power is still on.
DANGER
The entire P.C. board of this air conditioner system is a high-voltage area.
When operating the service switches with the power of the system left on, wear electrically insulated gloves.
LED displays
D800 D801 D802 D803 D804
(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)
•
There are four LEDs display patterns.
: ON
: OFF
: Rapid flashing (5 times/sec.)
: Slow flashing (1 time/sec.)
•
In the initial LED display status, D805 is lighted as shown on the right. If the initial status is not established
(if D805 is fl ashing), hold down the SW01 and SW02 service switches simultaneously for at least 5 seconds
to return the LED displays to the initial status.
D800 D801
(Yellow) (Yellow) (Yellow)
or or
Rapid Rapid
OFF or OFF or OFF
flashing flashing
– 14 –
Service switches
D805
LED display initial status
D802 D803 D804
(Yellow) (Yellow)
or or or
Rapid Rapid Rapid
or OFF or OFF or
flashing flashing flashing
SW01, SW02
D805
(Green)
ON
EN
TH
ID
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