2.1.8 Heating circuit pump 0 / burner relay
Depending on the system setting, the connection “Heating circuit pump 0” can be used for heating circuit pump
0 or as a burner relay. The following connection instructions must be observed:
Heating circuit pump 0
Burner relay
H
K
P
0
N
PE
L1
The pump can be supplied with up to a
max. 2 Ampere directly via the output.
During this process, phase (L1) of the
output is connected to the switch
contact.
H
K
P
0
N
PE
L1
L
N
PE
The pump must be supplied externally
with 2 Ampere. Up to max. 5 Ampere,
the floating contact can used to switch
the phase. At above 5 Ampere, the
pump must be isolated with a relay.
H
K
P
0
N
PE
L1
Wire the floating output contact as an
enabling signal to control the standby
boiler.
2.1.9 Operating signal
On the core module (connection position KM-35), it is possible to issue a floating operating signal. The status is
displayed under the “
Standby relay
” output in the “Manual” -> “Digital outputs” menu.
Operating status
Relay status
Boiler off, standby, fault
0
All other operating statuses (e.g. preparation, heating up, pre-heating, ignition, heating, slumber,
cleaning, shutdown wait 1, shutdown wait 2, etc.)
1
Power connection and wiring
2
Core module and connection options
Service manual Lambdatronic H 3200 for wood chip boiler | B1480721_en
13
