Porsche P-80 2005, Manual

Page: 37 / 108

Sports Cars System
Climate Control Systems Diagnosis & Repair
Page 3.3
Sports Cars – 911 Carrera (996)/(997) & Boxster
(986)/(987) A/C System Description
The Boxster (986) was introduced in North America in M.Y.
1997 and the 911 Carrera (996) in M.Y. 1999. All 911
Carrera (996) and Boxster (986) models sold in the United
States had a fully automatic climate control system as
standard equipment.
With the introduction of the 911 Carrera/S (997), the
same A/C system from the previous 911 Carrera (996)
was used. The Boxster/S (987) models feature manual air
conditioning with combined interior filter (active carbon
and pollen filter) as standard equipment. Automatic climate
control is available as an option.
Both systems; air conditioning and automatic climate
control are further developments of the respective
previous 911 Carrera (996) and Boxster (986) systems.
They have been revised to ensure more even and more
comfortable ventilation of the passenger area and to
improve the user friendliness of all air conditioning
functions.
General – 911 Carrera (996) & Boxster (986)
The automatic climate control system automatically
maintains the selected passenger compartment tempera-
ture. The system is capable of maintaining temperatures
between 18-29° C (64-84° F), with 22° C (72° F)
recommended. In automatic operation, the system deter-
mines and controls blower speed, outlet air temperature,
and outlet selection. The automatic climate control system
also permits manual selection of temperature and air
distribution if desired.
General – 911 Carrera/S (997)
In contrast to the previous 911 Carrera (996) model, the
911 Carrera/S (997) features automatic climate control
with a combined interior air filter (active carbon and pollen)
as standard. The automatic climate control used in the
911 Carrera/S (997) is a further development of the
previous system. It was revised to ensure more even and
more comfortable ventilation of the passenger area and to
improve the user-friendliness of all air conditioning
functions.
The advantages of the new air conditioning systems:
• Ensures more even ventilation of the passenger area
• Is considerably less prone to drafts
• Is quieter
• and offers increased functionality.
The air conditioning system employs a CFC-free
refrigerant. In order to ensure an adequate supply of elec-
trical energy (taking additional facilities into consideration),
the 70 Ah battery is more powerful than its predecessor
and has been weight optimized.