Toshiba RAS-4M27S3AV-E Service Manual page 38

5-3. Outdoor Unit
RAS-4M27S3AV-A
Wiring between DRED (Demand response enabling device) and Outdoor Unit
This model supports DRM1 DRM2 DRM3.
AS/NZS 4755 DRM1
Important notice
■
• Install in accordance with the wiring rules (AS/NZS 3000).
• The precautions described below include important items regarding safety.
Observe them without fail.
• The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
WARNING
• Turn off the main power supply switch or breaker before attempting installation.
Make sure all power switches are off. Failure to do so may cause electric shock.
• Connect the connecting wire correctly.
If the connecting wire is incorrect, electric parts may be damaged.
• Ensure that all terminals are securely fi xed, so preventing any external forces having a negative
effect on the terminals.
• Do not connect the DRED mains cable to the terminal block of the outdoor unit
(Power supply and Indoor/Outdoor connecting).
Improper installation may result in fi re.
• Connect the demand connecting wires and relay connector (RJ45) so that they do not come
into contact with the refrigerant cycle parts or refrigerant pipes.
Wire breakage or water intrusion may cause electric shock or fi re.
• Do not screw the DRED signal receiver directly to the outdoor unit.
The screw may damage the internal parts and cause an electric shock, fire or refrigerant leak.
CAUTION
• Wear heavy gloves during the installation work to avoid injury.
■ Connection procedure
• This air conditioner complies with AS/NZS 4755.3.1.
• DRM available: DRM1, DRM2, DRM3
• The terminal block meets ELV requirements.
WARNING
• Do not connect the DRED mains cable to
the terminal block of the outdoor unit
(Power supply and Indoor/Outdoor
connecting). Improper installation may
result in fi re.
• For the power supply of the DRED,
prepare exclusive power supply
separated from that of the outdoor unit.
WARNING
Connect the wire (4-wire) with a round
terminal to the Demand section (COM,
DRM1, DRM2, DRM3) on the terminal block.
DRM2 DRM3
Trans-
former
- 38 -
Demand response interface
CN101 CN100
MCC-1653
CN102 CN105
COM DRM1 DRM2 DRM3
COM DRM1 DRM2 DRM3
DRED
Locally procured
COM DRM1 DRM2 DRM3
FILE NO. SVM-15073
Outdoor control
P.C. board
L N 1 2 3
Power supply
Indoor (A~D) unit
Connecting