DeDietrich C 330 Series Installation, User And Service Manual page 40

6 Installation
Fig.28 Connecting the modulating
thermostat
Mains
PUMP
N L N L
Fig.29 Blocking input
Mains
PUMP
N L N L
Fig.30 Release input
Mains
PUMP
N L N L
40
The boiler is fitted with an OpenTherm connection as standard. As a
result, modulating OpenTherm thermostats can be connected without any
further adjustments.
1. In the case of a room thermostat: install the thermostat in a reference
2. Connect the two-wire cable of the thermostat to the On/Off OT
ON/OFF
OT BL RL
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The boiler has a blocking input (normally closed contact). If this contact is
opened, the boiler will be blocked or locked out. This input can be used for
example in combination with the flue gas thermostat (if present). This input
relates to the BL terminals of the connector.
ON/OFF
OT BL RL
A parameter setting can be used to change the function of the input.
AD-0000495-01
The boiler has a release input (normally open contact). If this contact is
closed when there is a heat demand, the burner will be blocked after a
waiting time. This input can be used, for example, in combination with the
limit switches on flue gas dampers, hydraulic shutter valves, etc. This input
relates to the RL terminals of the connector.
ON/OFF
OT BL RL A parameter setting can be used to change the input waiting time.
AD-0000496-01
Connecting the modulating thermostat
Important
This function is only available with the IniControl control panel
room.
terminals of the connector. It does not matter which wire is connected
to which cable clamp.
Blocking input
Warning
Only suitable for potential-free contacts.
Important
First remove the bridge if this input is used.
See
Manual for the control panel.
Release input
Warning
Only suitable for potential-free contacts.
See
Manual for the control panel.
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