Installing Heating/Fresh-Air Unit

Information 

Make sure that coolant does not soil the passenger compartment.

Protect seats and carpet with protective covers.

Information 

• Make sure not to damage the insulation of the main wiring harness. 

Information 

Do not remove the stoppers for the air-conditioning lines until just before installing the expansion valve.

Check foam parts for signs of damage. If in doubt, replace them.

1. Fit firewall sound absorber on the heating/fresh-air unit.
2. Affix a new seal on the air intake.
3. Guide the heating/fresh-air unit -3-  into the passenger compartment via the passenger's side and use the two guides -2-  to position it on the firewall -1-  . A second worker is required.
   Fig 1: Identifying Heating/Fresh-Air Unit Guides

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Support the heating/fresh-air unit at the center tunnel using a suitable wooden block so that the heating/fresh-air unit does not fall into the passenger compartment after you have positioned it.
5. Fit the two firewall sleeves -2-  on the firewall.
   Fig 2: Identifying Coolant Hoses On Heat Exchanger

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
6. Fit coolant hoses -1-  on the heat exchanger using assembly pliers Nr.72 Pos.2  .
   Fig 3: Identifying Coolant Hoses On Heat Exchanger

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Clip in the vacuum line at the brake booster.
8. Fit the refrigerant lines at the expansion valve → INSTALLING EXPANSION VALVE .
9. Fit condensed water pipe -1-  to the heating/fresh-air unit using a plastic clamp -2-  .

Fig 4: Identifying Condensed Water Pipe And Clamp On Heating/Fresh-Air Unit

Courtesy of PORSCHE CARS NORTH AMERICA, INC.