DeDietrich C 330 Series Installation, User And Service Manual page 44

6 Installation
Fig.41 Ctrl connection
Ctrl
0 +
0 +
AD-0000551-01
Fig.42 Wilo pump
R
1
2
3
1 2 3 4 5 6
Fig.43 Grundfos pump
R
1
2
3
1 2 3 4 5 6
44
U
7 8 9 10
AD-0000516-01
U
7 8 9 10
AD-0000517-01
If the boiler is operating, the operation signal can be switched via a
potential-free contact (maximum 230 VAC, 1 A) on the No and C
terminals of the connector.
If the boiler is locked out, the alarm signal can be transmitted via a
potential-free contact (maximum 230 VAC, 1 A) on the Nc and C
terminals of the connector.
Analogue output (Ctrl)
An outgoing 0 - 10 V signal can be used either to report the supplied heat
output or the supplied temperature.
An outgoing 0 - 10 V signal can be used to adjust the speed of the system
pump (possible only if the pump is suitable for this).
The function of the analogue output can be changed with a parameter
setting.
See
Manual for the control panel.
Control of the 0-10 V Wilo system pump
1 Maximum pump speed
2 Minimum pump speed
3 The pump is off
R Pump speed
U Output signal (V)
Tab.28 Output signal
Output signal (V) Description
<1 Pump off
1 - 2 Hysteresis
2 - 3 Pump on (minimum pump speed
3 - 10 Pump modulating (linear)
Control of the 0-10 V Grundfos system pump
1 Maximum pump speed
2 Nominal set-point
3 Minimum pump speed
R Pump speed
U Output signal (V)
Tab.29 Output signal
Output signal (V) Description
< 0.5 Pump on (minimum pump speed
> 0.5 Pump modulating (linear)
Control of the PWM system pump
In this case, the 0 - 10 V signal controls the system pump linearly.
Tab.30 Message about the supplied temperature
Output signal (V) Temperature in (°C)
0.5 -
1 - 10 10 - 100
Description
Lock out
Supplied temperature
7600532 - v.11 - 13122018