Grouping Connection - Carrier HDB Manuel D'installation

HDB controller

Grouping connection

Fit the communication board into the special connector which can
be reached only after cover 1 and cover 2 have been removed.
Proceed as follows:
• Remove cover 1
• Remove cover 2 (screw + clips)
Connect the units in daisy chain confi guration (white and blue cables in parallel) for grouping. Refer to the fi gure below.
B
BLUE
B
GREY
C
WHITE
A
BLACK
GND
RED
12V
1
1
6
Grouping confi guration of several units
B
C
A
GND
12V
A
• Fit the board onto connector J8
For the Cassette unit, remove the metal cover as previously
described, and remove the board from its seat.
Install the communication board.
For more information refer to the manual provided with the grouping
kit.
BLUE
GREY
WHITE
BLACK
RED
B
BLUE
GREY
WHITE
BLACK
RED
A
2
First indoor unit
Second indoor unit
Third indoor unit
E N G L I S H
B
C
A
GND
12V
Main board
Communication board
5-wire wiring
Auxiliary terminal block
B
BLUE
B
GREY
C
WHITE
A
BLACK
GND
RED
12V
A
3
A Comunication board
B To the other terminal block
GB - 5