P/N 13772-127 1 of 14
Cirrus Design Section 9
SR22 Supplements
Pilot’s Operating Handbook and
FAA Approved Airplane Flight Manual
Supplement
for
Air Conditioning System
When the Air Conditioning System is installed in the Cirrus Design
SR22, this POH Supplement is applicable and must be inserted in the
Supplements Section (Section 9) of the Cirrus Design SR22 Pilot’s
Operating Handbook. This document must be carried in the airplane at
all times. Information in this supplement adds to, supersedes, or
deletes information in the basic SR22 Pilot’s Operating Handbook.
• Note •
Noted effectivity “Serials with G3 Wing” indicates Serials
2334, 2420, 2438 and subsequent.
Noted effectivity “Serials before G3 Wing” indicates Serials
1602, 1821, 1840, 1863 thru 2333, 2335 thru 2419, and 2421
thru 2437.
This POH Supplement Change, dated Revision 01: 03-27-07,
supersedes and replaces the original release of this POH
Supplement dated 01-26-06.
Revision 01: 03-27-07
2 of 14 P/N 13772-127
Section 9 Cirrus Design
Supplements SR22
Section 1 - General
The Air Conditioning System is designed to heat and cool the cabin to
desired temperature settings and maintain comfortable humidity
levels. The system consists of an engine driven compressor,
condenser assembly, evaporator assembly, exhaust heat exchanger,
fresh air inlet, air-mixing chamber, blower fan, distribution manifold,
ducting, windshield diffuser, vent outlets, associated plumbing,
controls, actuators, wiring for system flow-selection and temperature
control.
Serials before G3 Wing; Ventilation and cooling is provided by ducting
fresh air from the RH wing inlet to the mixing chamber located under
the front passenger seat. Depending on operating mode and
temperature selection, the air in the chamber is ducted directly into the
distribution system or, if in air-conditioning mode, is further cooled by
the evaporator assembly mounted adjacent to the mixing chamber.
Heating is accomplished by mixing ventilation air from the fresh air
inlet with heated air provided by the muff-type heat exchanger
surrounding the right engine exhaust muffler. The conditioned air is
then forced by ram air pressure or by blower fan into a distribution
manifold which regulates airflow and vent selection.
Serials with G3 Wing; Ventilation and cooling is provided by ducting
fresh air from a NACA vent on the RH lower cowl to the mixing
chamber located on the lower RH portion of the firewall. Depending on
operating mode and temperature selection, the air in the mixing
chamber is ducted directly into the distribution system or, if in airconditioning
mode, is further cooled as it passes through the
evaporator assembly located under the front passenger seat. Heating
is accomplished by mixing ventilation air from the fresh air inlet with
heated air provided by the heat exchanger in the mixing chamber on
the firewall. From the mixing chamber, which also control airflow into
the cabin, the conditioned air is forced by ram air pressure or by blower
fan into a distribution manifold which regulates vent selection.
Airflow, temperature, and vent selection is accomplished using the
system control panel mounted on the right hand portion of the
instrument panel.
The aircraft engine must be running for the air-conditioner to operate.
Revision 01: 03-27-07
P/N 13772-127 3 of 14
Cirrus Design Section 9
SR22 Supplements
1
2
3
AC
ON
COLD
HOT
OFF
S
P
S P
FOOT-WARMER
DIFFUSER
DISTRIBUTION
MANIFOLD
FRESH AIR
VALVE
EVAPORATOR
ASSEMBLY
HOT AIR
VALVE
COMPRESSOR
HEAT EXCHANGER
RECIRCULATION
CHECK VALVE
SR22_FM09_2081B
VENTS
TEMPERATURE
AIRFLOW
AIR
INLET
CONDENSER
ASSEMBLY
NOTE: Illustration depicts maximum
cabin cooling airflows and
selector settings.
PANEL AIRFLOW
FRESH AIR
INTAKE
FLOOR AIRFLOW
WINDSHIELD
DIFFUSER
AIR MIXING
CHAMBER
AIR GASPER
Figure - 1 (Sheet 1 of 2)
Air Conditioning System Schematic - Serials before G3 Wing
Revision 01: 03-27-07
4 of 14 P/N 13772-127
Section 9 Cirrus Design
Supplements SR22
Figure - 1 (Sheet 2 of 2)
AIR FLOW VALVE
RAM AIR RAM AIR
FRESH AIR
VALVE
HOT AIR
VALVE
HEAT
EXCHANGER
1 2
3
AC
ON
COLD
HOT
OFF
S
P
S P
FOOT-WARMER
　
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