Fig. 905 Installing Nozzle Holder Pre-Heating Unit With 1563/1564 Control Unit - Webasto DBW 2010 Workshop Manual

DBW 2010 / 2016
9.1.2.2 Installation of nozzle holder pre-heating unit
for DBW 2010 / DBW 2016 with 1563/1564
control unit
General information
The fuel to the atomiser nozzle is heated with the nozzle
holder pre-heating unit. At extremely low temperatures, mal-
functions can occur without nozzle holder pre-heating for
heaters specified above.
At a temperature of < 0 °C, the heating cartridge in the noz-
zle holder is connected with a thermostat. The heating dura-
tion is dependent on the reflected heat in the combustion
chamber and switches off at + 8 °C at the thermostat.
If no nozzle holder pre-heating unit is installed in the heater,
it can be retrofitted using the following procedure.
Visit www.butlertechnik.com for more technical information and downloads.
Heating cartridge
Thermostat

Fig. 905 Installing nozzle holder pre-heating unit with 1563/1564 control unit

www.butlertechnik.com
Following retrofitting, the following bags of spare parts are
provided for the heaters specified above:
• 24 V heaters with 1563/1564 control unit, Order No. 968
90A
The bags of spare parts contain the following parts:
1 heating cartridge
1 clamping yoke
1 relay
1 relay with free-wheeling diode
1 thermostat
1 wiring harness
1 lug
1 disc
1 nut
1 serrated lock washer
1 socket housing, 3-pin
1 socket housing, 2-pin
7 tab receptacles
1 relay socket
Nozzle holder
DBW 2010
9 Repair
906