Thermo Top Z / Thermo Top C
Connection to the vehicle cooling system
37
7 Connection to the vehicle cooling system
The heaters are connected to the vehicle cooling system as shown in
Figures 4, 5 and 6. The system must contain at least 4 litres of coolant.
The heater must be integrated into the cooling system in the feed line to
the vehicle’s heat exchanger.
NOTE:
Leaking cooling water must be collected in a suitable container.
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) rising if possible. Hose connections must be supported
by hose clips to prevent them slipping.
NOTE:
The hose clips on the heater must be fitted between the flared neck and
the heater.
The hose clips must be tightened with a torque of 2.0 + 0.5 Nm.
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.
Poor bleeding may cause malfunctions due to overheating whilst the
heater is operating.
Fig. 5: Installation in engine’s water system “inline integration”
ϑ
1 Expansion tank
2 Thermostat
3 Engine
4 Circulating pump
5Heater
6 Heating system
heat exchanger
7Radiator
7
2
3
1
6
4
5
TZea_02_gb_e.fm Seite 37 Montag, 3. Februar 2003 2:09 14
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