Toshiba Black Pear - 4. Connection Details; 4.1 Power Supply; 4.2 HVAC Communications Network (TCC-LINK)

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4. Connection Details
All electrical work should be carried out by a competent
person and wiring must be in accordance with the national
electrical installation regulations.
4.1 Power Supply
The Black Pear requires a 24v AC supply and has a consumption not exceeding 5VA. The
internal fuse is rated T630mA.
THIS EQUIPMENT MUST BE EARTHED
4.2 HVAC Communications Network ( TCC-LINK )
Connect to outdoor unit terminals U3 and U4, as per a standard central controller.
These are non-polarized.
Reset
Button
Power
Supply
HVAC Serial Comm
Ports
Digital
In/Out
24v AC
N/C
USB 10/100
Base-T
Ethernet
To
Ethernet
RS485-B
RS485-A
Out
In
RS232 Tx
RS232 Rx
Common
To HVAC Network
To PC
for configuration
and firmware
upgrading.
RS485-Com
Fig. 1 Connection Details