For more information, see
Changing the parameters, page 48
Release input
The boiler has a release input. This input relates to the RL terminals of the
connector.
Warning
Only suitable for potential-free contacts.
The parameter
can be used to change the function of the input.
The parameter
can be used to change the wait time of the input.
For more information, see
Changing the parameters, page 48
6.6.5 PCBs
The PCBs are positioned in the PCB housing.
The following PCBs are already installed in the PCB housing:
IF-01
SCU-S02
SCU-X01
Connection options for the 0–10 V PCB (IF-01)
The IF-01 PCB can be built into the instrument box or the housing for the
PCBs. See the instructions provided with the product.
Caution
Do not connect a frost thermostat or room thermostat to the boiler
if using the 0–10 V PCB.
Connecting the status relay (Nc)
If the boiler locks out, a relay is de-energised and the alarm can be trans
mitted via a potential-free contact (maximum 230 V, 1 A) on terminals Nc
and C of the connector.
Connection (OTm)
The interface uses OpenTherm to communicate with the boiler control
unit. To make this possible, the OTm connection must be connected to the
OpenTherm input of the boiler control unit.OTm
Analogue input
A choice can be made with this control between control based on temper
ature or heat output. The two controls are described briefly below.
1. Connect the input signal to terminals 0–10 of the connector.
Fig.28 Release input
AD-0000053-01
OT
On
/off
Tout
Tdhw
BL
RL
On/off
OT
BL
RL
Tout
Tdhw
Fig.29 Open housing for PCBs
AD-3000341-01
2
x3
1
Fig.30 IF-01 PCB
AD-0000054-01
St
a
tu
s
0
-1
0
0
-1
0
N
c
N
o
C
N
c
N
o
O
T
m
0
+
0
+
C
O
T
m
0
+
0
+
X5
X4
X1
IF-01
%
1
2
6 Installation
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