14 8 Combustion Air Supply - Valeo THERMO PLUS 230 Einbauanweisung

Thermo plus 230/300/350
8 Combustion air supply
Under no circumstances may the combustion air be taken from areas
occupied by people. The combustion air intake opening must not point
in the direction of travel. It must be located so that it cannot become clo-
gged with dirt or snow and cannot suck in splashing water.
Permissible dimensions of combustion air intake line:
– Inside diameter: 55 mm
– Max. permissible line length: 5 m without exhaust extension
– Max. permissible bends: 270°
– Total length of air intake line and exhaust pipe max. 5 m
The combustion air intake must not be routed above the exhaust outlet.
Deviations must be approved by Spheros.
NOTE:
If the combustion air intake line cannot be installed so that it slopes
downwards, a water drain hole with a diameter of 4 mm is to be made at
its lowest point.
Only by Spheros approved combustion air intake lines may be used.
When the heater is installed in the vicinity of the vehicle tank in a com-
mon installation space, combustion air must be drawn in from the out-
side of the vehicle and the exhaust gas be discharged into the atmos-
phere. Lead-through openings must be splash-proof.
If the heater is located in an enclosed installation housing, an effective
ventilation opening is required:
Thermo plus 230 / 300
Thermo plus 350
Verify by checking the CO values whether the ventilation is effective
2
and sufficient.
If the temperature in the installation housing exceeds the permissible
ambient temperature of the heater (see Technical Data), the ventilation
opening must be enlarged subject to prior consultation with Spheros.
2
30 cm
2
40 cm
Combustion air supply
45