Audi Workshop Service and Repair Manuals

Note:

Sectional view of heater shows flaps in "air routing to footwell" position and temperature setting "cold" or setting "min" (no air through heating system heat exchanger).

•     A -    Driver's side
•     B -    Passenger's side
•     C -    Passenger-compartment air intake (recirculated air mode)
• ◆ Via passenger's footwell
•     D -    Fresh-air intake
• ◆ Via dust and pollen filter installed in plenum chamber

•     E -    To windscreen vents (passenger's side)
• ◆ Air from centre defroster vent comes from both sides of heater; temperature depends on mixing ratio produced by temperature settings on
  -E87 (heating)
•     F -    To windscreen vents (driver's side)
• ◆ Air from centre defroster vent comes from both sides of heater; temperature depends on mixing ratio produced by temperature settings on
  -E87 (heating)
•     G -    To driver's dash panel vents

•     H -    To driver's front footwell vent
•     J -    To centre dash panel vents
• ◆ Air from these vents comes from both sides of heater; temperature depends on mixing ratio resulting from which flaps are open/closed and temperature settings on -E87 (heating)
•     K -    To driver's rear footwell vent
•     L -    To passenger's rear footwell vent
•     M -    To passenger's front footwell vent
•     N -    To passenger's dash panel vents

• Fresh-air blower -V2
• ◆ With fresh-air blower control unit
  -J126
• Recirculated-air flap
• ◆ Fig. shows "closed" position
• Fresh-air flaps
• ◆ Fig. shows "open" position
• ◆ The two flaps are actuated independently of one another by cam plate attached to control motor and actuating arm
• Defrost flap
• ◆ Fig. shows "closed" position
• ◆ The two flaps are jointly actuated by way of levers attached to outside of air distributor housing and connecting elements

• Central flap 1
• ◆ Fig. shows "closed" position
• ◆ Due to the shape of the two outer flaps air can flow to left and right vents when centre flap is closed
• ◆ The two central flaps are actuated independently of one another by cam plate attached to control motor and actuating arm
• Central flap 2
• ◆ Fig. shows "open" position, air routing to footwell vents
• ◆ The two central flaps are actuated independently of one another by cam plate attached to control motor and actuating arm

• Additional heating heater element
  -Z35
• ◆ For vehicles with diesel engine only; electric or fuel-driven additional heater depending on vehicle equipment and

=> Relevant Diesel Direct-injection and Glow Plug System Workshop Manual; Repair Group 01

• Heating system heat exchanger
• Temperature flaps 2
• ◆ One flap each for driver's and passenger's side
• ◆ Fig. shows "cold" position or "Min" setting
• ◆ Temperature flaps 2 are actuated by temperature flaps 1 by means of connecting elements in air distributor housing => Page 80-57

• Temperature flaps 1
• ◆ Fig. shows "cold" position or "Min" setting
• ◆ One flap each for driver's and passenger's side
• Noise insulation
• ◆ For air routing and noise insulation (instead of evaporator on vehicles with air conditioner)