Air Conditioner Operating Conditions; Functions To Be Implemented Locally - Toshiba RAV-GM1101AT8P-E Installation Manual

12

Air conditioner operating conditions

For proper performance, operate the air conditioner under the following temperature conditions:
Cooling operation Dry bulb temp.
Heating operation Wet bulb temp.
If air conditioner is used outside of the above conditions, safety protection may work.
13

Functions to be implemented locally

Handling existing pipe
When using the existing pipe, carefully check for the following:
• Wall thickness (within the specified 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 flare 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 R 2, R410A.
• The existing pipe must have a wall thickness equal to or larger than the following thicknesses.
Reference outside
Wall thickness (mm)
diameter (mm)
Ø9.5 0.8
Ø15.9 1.0
Ø19.0 1.0
• Do not use any pipe with a wall thickness less than these thicknesses due to insufficient pressure capacity.
35-EN
–15 °C to 46 °C
–15 °C to 15 °C
3
Refrigerant recovery
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WARNING
Don't admit air into refrigerant during recovery.
•
Otherwise, the pressure in the freezing cycle might increase abnormally. Serious injury could occur if it bursts.
[Recovering the refrigerant]
• You need to recover the refrigerant when moving or repairing the indoor and/or outdoor units. You cannot do
this while the air conditioner is running in cooling mode because a protective device will be tripped. Be sure to
recover the refrigerant in test run mode.
Use a refrigerant recovery device when the amount of refrigerant to be recovered exceeds the initial amount of
•
2.1 kg.
Instructions (Recovery to the Air Conditioner)
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1. Power on the air conditioner.
2. To set the air conditioner to test run mode, hold down the Temporary button for more than 10 seconds.
Then, you will hear a "Pi" sound, and the light (green), light (green) and light (orange) lamps will blink quickly to
indicate that the air conditioner has gone into a test run mode.
3. Wait for one minute to elapse, and then close the valve of liquid side.
4. It is recommended to attach a pressure gauge at the service port so that you can determine when refrigerant
recovery has been completed.
5. Upon completion, close the valve of gas side.
6. Stop the air conditioner.
7. Power off the air conditioner.
Complete Steps 2 to 6 within fi ve minutes. Otherwise, the protective device might trip, causing the outdoor
•
unit to stop.
If the recovery operation has been interrupted by the protective device, turn off the air conditioner. In this
•
case, use a refrigerant recovery device.
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EN
ID
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36-EN