Combustion air
29
9 Combustion Air Supply
The air inlet must be so positioned or guarded that blocking by rubbish or
luggage is unlikely. (Requirement from ECE R122, Point 5.3.5.2.).
9.1. Combustion air pipe
The intake opening for combustion air must be located so that it cannot
become clogged with dirt. It must not point in the direction of travel.
An intake line is required for combustion air.
The withdrawal point for the combustion air must be located in a cool place
where it is protected from splashing water and above the wading line of
the vehicle.
Should the intake opening be located within a closed installation space, a
ventilation opening of at least 3 cm
2
is required.
9.2. Intake silencer
The air intake silencer must be installed in a position between 0° and 90°
pointing downwards.
See fig. 14.
Legend for fig. 14:
36) Combustion-air intake pipe
37) Combustion-air intake silencer
38) Mounting clip
9.3. Recommendations for installation
Mount a combustion-air intake pipe with a maximum length of 400 mm
with the slotted side (approx. 18 mm) on the combustion-air intake con-
nection piece of the heater and fasten it with the hose clamp provided.
Here the hose clamp must be fastened with a tightening torque of
2.0 + 0.5 Nm.
Leaks can result in a higher noise level. Ensure an adequate dis-
tance from the exhaust system to prevent the intake of exhaust
gas!
Depending on the installation, the combustion air intake silencer can be lo-
cated in a suitable location and secured with the included mounting clip or
other installation materials which utilise the latest technology.
1317098B_EA_TT_ZEC_DE_EN_ZH.book Page 29 Tuesday, July 3, 2012 1:08 PM
To Next Page
Loading...
Need help?
General
