ML 55 AMG (163.174) V8-5.5L (113.981) (2001)
Operating condition: No heating
Function
In the "no heating" operating status, the fresh air (A) is drawn in by the blower (5) into the heater housing and routed through the dust filter (3). The
fresh air (B), which is cleaned by the dust filter (3), is subsequently routed around the heat exchanger (1). This air conduction is controlled via the setting
of the blending air flaps (6).
The cleaned fresh air (B) is routed directly into the passenger compartment via the air outlets (E, F, M and S). The recirculated air flap (4) is closed.
Operating condition: No "recirculating air" heating
Function
In the no "recirculated air" heating mode the blower (5) draws the recirculated air (A) from the passenger compartment over the opened recirculated air
flaps (4) into the heater housing and routs it through the dust cleaner (3). The recirculated air (B), which is cleaned by the dust filter (3), is subsequently
routed around the heat exchanger (1). This air conduction is controlled via the setting of the blending air flaps (6).
The cleaned recirculated air (B) is routed directly into the passenger compartment via the air outlets (E, F, M and S). The supply of fresh air is cut off by