Technical Information
22
3 Installation Location and Installation Position
Body sections and any other components in the vicinity of the heater must
be protected from excessive heat and the possibility of fuel or oil contami-
nation. (Requirement from ECE R122, Point 5.3.2.1.).
The combustion heater shall not constitute a risk of fire, even in the case of
overheating. This requirement shall be deemed to be met if the installation
ensures an adequate distance to all parts and suitable ventilation, by the
use of fire resistant materials or by the use of heat shields. (Requirement
from ECE R122, Point 5.3.2.2.).
The heater is preferably installed in the engine compartment, in the area
between the wheel arch and the front bumper.
Installation should be carried out as low as possible to ensure automatic
bleeding of the heater and circulation pump.
The openings of the coolant connection may not face down-
ward in any installation position.
Fig. 1 shows the permissible installation position of the heater.
For position of coolant fitting on heater, see fig. 2.
For dimensions of heater, see chapter 15, "Technical Data".
Legend fig. 2:
7) Circulation pump (optional with Thermo Top Z)
21) Coolant inlet connection
22) Coolant outlet connection
23) Combustion air inlet
24) Fuel inlet connection
25) Exhaust outlet connection
The heater may not be installed:
– in the direct area of radiation of exhaust systems
– below the wading line of the vehicle.
– above the coolant expansion tank.
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1317098B_EA_TT_ZEC_DE_EN_ZH.book Page 22 Tuesday, July 3, 2012 1:08 PM
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