Functions To Be Implemented Locally - Toshiba RAV-SP1104AT-E Installations-Handbuch

Super Digital Inverter
12

FUNCTIONS TO BE IMPLEMENTED LOCALLY

Night operation control
• Low-noise operation is available during
nighttime hours by connecting a commercially
available timer and a separately sold applicable
control wire TCB-KBOS1E. For more
information, refer to the manuals of these parts.
• The power saving function of the air conditioner
reduces the level of nighttime operating noise.
• Sufficient capacity for the low-noise operation
cannot always be provided depending on
external conditions including outside air
temperature.
Handling Existing Pipe
When using the existing pipe, carefully check it 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 the flare to prevent gas leak.
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 leak.
When the pipe corresponds to any of the
following, do not use it. Install a new pipe instead.
• The pipe has been open (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 R22, R410A or
R407C.
• The existing pipe must have a wall thickness
equal to or larger than the following thickness.
Reference outside
• Never use any pipe with a wall thickness less
than these thicknesses due to insufficient
pressure capacity.
19-EN
Wall thickness (mm)
diameter (mm)
Ø9.5
Ø15.9
Ø19.1
• To use an existing Ø19.1 mm pipe, set bit 3 of
SW802 (switch for existing pipe) on the P.C.
board of the outdoor unit to ON. In this case, the
heating performance may be reduced
depending on the outside air temperature and
room temperature.
When shipped from factory When using existing pipe
Recovering Refrigerant
• Use the refrigerant recovery switch SW801 on
the P.C. board of the outdoor unit to recover
refrigerant when the indoor unit or outdoor unit
is moved.
Procedure
1. Turn on the power of the air conditioner.
2. Select the FAN mode for indoor unit operation
with the remote controller.
3. Set SW804 on the P.C. board of the outdoor
unit to all OFF, and then press SW801 for one
second or more. The air conditioner enters the
forced cooling mode for up to 10 minutes.
Operation or handling the valve to recover
refrigerant during this time period.
4. Upon completion of refrigerant recovery, close
the valve and press SW801 for at least one
second to stop operation.
5. Turn off the power.
0.8
1.0
1.0
Take care for an electric shock because the
P.C.board is electrified.
– 19 –
Outdoor Unit Installation Manual
SW802
Refrigerant
recovery P.C. board
switch
SW801
Optional
connector
CN610
Special
operation
select switch
SW804
Existing pipe
switch SW802
DANGER