Lennox BCK 020 Installation Operating & Maintenance Manual page 76

control interface CLIMALINK / CLIMALOOK
After the starting procedure of the Climalook 3 central unit,
the LED next to the B PORT on the CLIMATIC KP01 board
will start to flash. The CPU connects to the boards one after
the other , and so it is normal for the LED to stop flashing
occasionally.
When all the connections are established, press the on/off
button. The programs are launched automatically, and the
LED located to the right of the Com B on the CLIMATIC
KP01 board should flash.
Note the site telephone number in order to make the
remote query.
The cable terminated by a
DB9 plug, coming out of
the 485/232 interface will
be connected to the
SERIAL port on the
Climalook central unit
Plug for telephone link
RJ11. Cable supplied with
the unit.
CONNECTION TO CLIMATICTM 50 USING INTERFACE
435/232
It is possible to connect up to 12 rooftops fitted with
CLIMATIC 50 when using a Climalook 3.
The connections between the units and the Climalink/
Climalook must be done using a double shielded pair of
wire (not supplied by Lennox) This cable must have
external metal braiding, and its cross-section must be at
least 0.5mm2 with a maximum of 1mm2
The wires will be connected to each CLIMATIC50 485 ports
You must ensure the connection order is correct:
+ on +,
- on -
and gnd on gnd.
Note the site telephone number in order to make the
remote query
After the starting up
procedure is completed the
LED on the INTERFACE
will start flashing.
IOM / ROOFTOP BALTIC Series - 0803 - E Page 75
RS 485 daughter-board
Plug for telephone link
RJ11. Cable supplied with
the unit.