Connection To The Vehicle Cooling System - Webasto Thermo Top C-B Installation Instructions Manual

Thermo Top C / Thermo Top E
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Connection to the vehicle cooling system

The heaters are connected to the vehicle cooling system as shown in
Figs. 3, 4 and 5. At least 4 litres of coolant must be circulated
(Thermo Top C); 3 litres for Thermo Top E.
1 2
ϑ
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1 Equalizing reservoir
2 Thermostat
3 Engine
4 Circulation pump
5 Heater
6 Heat exchanger
7 Radiator
Fig. 4: Installation in engine water circulation,
"in-line integration"
The heater must be integrated into the cooling circuit in the feed line to
the on-board heat exchanger.
4
5
3
Connection to the vehicle cooling system
NOTE:
Leaking cooling water must be collected in a suitable container.
The water hoses supplied by Webasto must always be used. If other
hoses are used, they must at least comply with DIN 73411. The hoses
must be routed without kinking and preferably uphill to ensure perfect
bleeding. Hose connections must be supported by hose clips so they
cannot slip off.
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.
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Care must be taken to bleed the cooling system before the heater is
taken into service for the first time or after refilling with fresh cooling
water. Heater and lines should be installed in such a way as to ensure
static bleeding.
Malfunctions due to overheating may occur during operation if the
heater and lines have not been bled correctly.
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