11 6 Connection To The Vehicle Cooling System - Valeo THERMO E 200 Einbauanweisung

Connection to the vehicle cooling system
6 Connection to the vehicle cooling system
The heater is to be connected to the vehicle cooling system in
accordance with Figures 1 and 5. The system must contain at least 25
litres of coolant. A minimum of 30% of a good quality antifreeze should
be maintened in the heating circuit of the heater at all times.
A current list of approved by Valeo antifreeze agents can be found on
the Valeo website.
Basically the water hoses supplied by Valeo should be used. If this is not
the case, the hoses must comply at least with DIN 73411 requirements.
The hoses are to be routed without any kinks and - for proper venting of
the heater - in an upward pitch, if possible. Hose connections must be
secured against slipping off by means of hose clamps.
NOTE:
The tightening torques of the hose clamps used must be observed. After
2 hrs. / 100 km, the hose clamps schould be retightened.
In the vehicle cooling system, or in a separate heating circuit, only pres-
sure control valves with an opening pressure of min. 0.4 bar and max.
2.0 bar may be used.
Before the heater is started up for the first time, or after the coolant has
been replaced, it must be ensured that the cooling system is properly
bled. Heater and piping should be installed in such a way that static
bleeding of the system is ensured.
Proper bleeding action can be recognised by the nearly silent operation
of the circulating pump. Insufficient bleeding during heater operation can
result to tripping of the temperature limiter.
If the circulating pump U 4855 / Aquavent 6000C is used it will be auto-
matically deactivated approx. 10 seconds after its activation if coolant is
lacking or a blockage of the pump impeller has occurred, and can then
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be restarted after approx. 2 minutes.
If the circulating pump U 4856 / Aquavent 6000SC is used, it will be au-
tomatically deactivated approx. 45 minutes after its activation if coolant
is lacking or a blockage of the pump impeller has occurred, and can then
be restarted after approx. 2 minutes.
ATTENTION:
Before commissioning the heating system, the heating hoses, the
pump and the heater must be completely filled.
Only by Valeo approved antifreeze agents may be used.
Thermo E 200/320