Valeo THERMO DC 200, Инструкция по установке и эксплуатации

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Installation of the heater - fitting of important assemblies Thermo DC 200
11.2. Connection to the vehicle's cooling system
The heating appliance is connected to the vehicle's cooling system
according to figure 9. The volume of coolant fluid present in the circuit
must be at least 25 liters. The water in the heating circuit of the heating
appliance must contain at least 30 to 60% of a branded antifreeze agent.
An up-to-date list of Valeo recommended anti-freeze agents can be
found on the Valeo website.
Basically, the by Valeo approved water hoses must be used. If this is not
the case, the hoses must at least comply with DIN 73411. The hoses are
to be laid without kinks and also rising where possible for the proper
bleeding of the heating appliance. The heater must be mounted below
the minimum water level of the cooling circuit. Hose connections are to
be secured with hose clamps against slipping off.
When installing the electric heater the direction of the flow of the cooling
water in the circuit is to be considered (see figure 9).
ATTENTION:
The specified tightening torques of the hose clamps used must be
adhered.
In the vehicle cooling system, or in the case of a separate heating circuit,
only overpressure valves with an opening pressure of maximum 2 bar
should be used.
Attention should be paid to the careful bleeding of the cooling system
without usage of the circulating pump, before the first commissioning of
the heating appliance, or after the coolant fluid has been replaced.
For that the additional venting option via the vent screw item 4, figure 9
is to be used after the system has been filled and the pump has been
switched on.
The heat exchanger and the water hoses of the Thermo DC should be
pre-filled completely. Loosen the vent screw slightly until no air further
emerges, but only water. Then retighten the screw (tightening torque -
see figure 11).
ATTENTION:
If air bubbles are present, they could cause destruction of the car-
tridge heaters!
The heating appliance and pipes must be installed in such a way that
they ensure a static bleeding of the system.
The correct degree of bleeding results in an almost silently operating
circulation pump. An inadequate bleeding can lead during heating
operation to the switching-off of the heating appliance due to overhea-
ting.
Where the U 4855 / Aquavent 6000C circulation pump is used, the circu-
lation pump is automatically switched off ca. 10 seconds after switching
on, if the cooling agent is not present or there is blockage of the pump
impeller, and it can be started up again after ca. 2 minutes.
Where the U 4856 / Aquavent 6000SC circulation pump is used, the
circulation pump is automatically switched off ca. 45 seconds after swit-
ching on, if the cooling agent is not present or there is blockage of the
pump impeller, and it can be started up again after ca. 2 minutes.
ATTENTION:
Before commissioning the heating system, the water hoses, the
circulation pump and the heating appliance must be filled comple-
tely.
Only by Valeo recommended anti-freeze agents may be used.