Installing Heating/Fresh-Air Unit

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Before the heater/air-conditioning unit is installed again, the following points must be checked:

Check the water drain hose for any cracks, deformities and other damage .

Fig 1: Identifying Water Drain Hose
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Check both supports (stars) for the heater/air-conditioning unit on the body for damage. The stars must be able to turn for installation .

Fig 2: Identifying Supports (Stars) For Heating/Fresh-Air Unit On Body
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Both supports for the stars on the heater/air-conditioning unit must not be damaged .

Fig 3: Identifying Supports On Heating/Fresh-Air Unit For Stars
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 4: Installing Heater/Air-Conditioning Unit
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Position the heating/fresh-air unit in the vehicle with the help of a second person -arrow A- . Get this person to check that the stars are positioned correctly and turn them if necessary.
Slide the heating/fresh-air unit onto the two supports (stars) and clip it in at two retaining points on the left and right. Get a second person to check that the supports (stars) are positioned correctly and turn them if necessary.
Clip in the main wire harness and cable duct at the heating/fresh-air unit at the left and right -arrow B- .
Push the water drain hose onto the heating/fresh-air unit and make sure it is seated correctly. Push on spring band clamp -3- .

Fig 5: Pushing On Water Drain Hose
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Clip in the main wire harness and cable duct at the heating/fresh-air unit at the left and right.
Plug in electric plug connection for the servo motors until it engages securely.

Fig 6: Plugging In Connector For Servo Motors
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Insert the center air vents for the footwell and slide them onto the heating/fresh-air unit. → Installing Front Footwell Outlet Vents
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- When installing or replacing the heater/air-conditioning unit, check that the temperature sensors are fitted in the footwell outlet vents .
- If the heater/air-conditioning unit has to be replaced, the temperature sensors for the footwell outlet vents -5 and 6- on the heater/air-conditioning unit are in a park position and must be moved from there into the fitted footwell outlet vents .
  
  Fig 7: Identifying Installation Positions Of Temperature Sensors
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. 7.1. Fit temperature sensors into the footwell outlet vents .
  Information
  - Always replace O-rings .
Insert the coolant supply line and return line into the heat exchanger -arrow B- .
Slide on the retaining clips -2- until they engage securely.

Fig 8: Sliding On Retaining Clips For Coolant Line
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Fit cover for coolant lines.

Fig 9: Fitting Cover For Coolant Lines
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Screw in and tighten two fastening screws -1- on the cover.