Repair manual

48
Wiring diagram for the basic heater models
HYDRONIC 16 - 24 V 25 2165 01 00 00
HYDRONIC 24 - 24 V 25 1817 01 00 00
HYDRONIC 30 - 24 V 25 1818 01 00 00
HYDRONIC 35 - 24 V 25 1819 01 00 00
1.14 Heating cartridge for
nozzle holder heater
2.1 Control unit
2.5.1 Relay, heating
cartridge
2.5.6 Relay, water pump
6 / Wiring diagram
a) HYDRONIC connection
X Diagrammatic representation of the control
unit from the fan wheel side
The plug connector and socket housings are
shown as viewed from the cable entry side.
For “Operation” wiring diagram, see page 50.
25 1818 00 96 01 C
Parts list
1 HYDRONIC
1.1 Burner motor
1.2 Ignition electrode
1.3 Ignition spark generator
1.4.1 Temperature switch - only
on HYDRONIC 16 / 24
1.5 Safety thermal cutout
sensor
1.11 Fuel solenoid valve
1.13 Temperature sensor