Technical data

Connection to the vehicle cooling system DBW 2010 / 2016
38
6 Connection to the vehicle cooling system
The heater is connected to the vehicle cooling system as shown in
Figures 1 and 5. The system must contain at least 10 litres of coolant.
The water hoses supplied by Webasto must always be used. If you do not
use these hoses, the hoses that you do use must comply with DIN 73411.
The hoses must be installed without kinks
and (to ensure perfect bleeding
of the heater) rising if possible. Hose connections must be supported by
hose clips to prevent them slipping.
NOTE:
The hose clips must be tightened with a torque of 1.5 Nm.
Only pressure valves with an opening pressure of min. 0.4 bar and max.
2.0 bar may be used in the vehicle’s cooling system or in a separate
heating system.
The cooling system must be bled carefully before using the heater for
the first time or after replacing the coolant. The heater and lines should
be installed in such a way as to ensure static bleeding.
Perfect ventilation can be identified by the circulating pump operating
almost silently. Poor bleeding may cause the resetting temperature
limiter to trip whilst the heater is operating.
1303560C_DBW 2010 EA_degbfr.book Page 38 Tuesday, March 5, 2013 9:05 AM