Description Of The Cb-09 Pcb; Description Of The If-01 Pcb - REMEHA GAS 120 ACE Series User Manual

Fig.5
BL RL
1 2 3
Fig.6
1
%
2
IF-01
X1
7717201 - v03 - 25062019
4.3.2
The CB-09 PCB allows additional inputs to be connected as per the
following table:
6
PWM
Tout - +
4 5
MW-2000826-01
4.3.3
The IF-01 PCB is factory fitted and allows additional inputs such as a
sensor or switch to be connected to the system.
This PCB controls the boiler with the 0-10V signal from an external control
system.
X5
X4
AD-0000054-01
Important
If the boiler is fitted with the SCB-02 board, then this is
automatically recognised by the automatic control unit of the
boiler.
On removing this board, the boiler will show an error code. To
prevent this error, carry out an auto-detect immediately after
removing this board.

Description of the CB-09 PCB

Mar Con­ Description
ker nector
1 R-Bus Not used
2 BL Boiler frost protection (active if contact open)
3 RL Release open contact
4 Tout Not used
5 PWM Modulating pump control connection
6 X4 Modulating pump power connection

Description of the IF-01 PCB

Connector Description
0-10 (input) The 0-10V signal corresponds to a temperature or power
set point, depending on the position of the jumpers
0-10 (output) Output signal indicating the boiler's operating mode
Status Boiler fault reporting contact output
OTm Communication link with the CU-GH-08 PCB
4 Description of the product
MID _HMI T-control - Gas 120 ACE 15