Saab SONETT III Service Manual page 144

14 12 13
15
16
17 18
is
't1111.(1
."51,stumkkant
\IVIVI\ \\KW —
19
20
Water
(=> Warm air
21
Cold air
COOLING- AND HEATING SYSTEM
1. Water pump
2. Radiator
3. Fan
4. Water distribution tube
5. Temperature transmitter
6. Thermostat
7. By-pass
8. Water jacket, automatic
choke
9. Thermostat valve
10. Expansion tank
11. Bleeding nipples
12. Filling cap
13. Fan wheel
14. Heater fan motor
15. Defroster jet, adjustable
16. Fresh-air intake
17. Collector box
18. Heater core
19. Defroster hose
20. Air inlet
21. Drain plugs (2)
22. Drain valve
S 2709
June 1970
SAAB
941-1
Heating and ventilation system
General
The arrangement comprises a separate system, connected
to the cooling system. The air flows into a collection box
through the air intake in front of the windshield, contin-
uing from there through a splash guard into the fan and
heat exchanger and on through the damper housing into
the passenger compartment. The fan and the heat ex-
changer have separate, but communicating, c,asings. The
air is warmed up as it passes the heat exchanger which,
in its tum, is heated by the cooling water. The tempera-
ture can be varied with the thermostat-controlled heating
cock. The thermometer bulb is located in the current
of air injected into the passenger compartment. The air
from the heat exchanger first passes a damper housing,
where it is distributed to the lower, front part of the pas-
senger compartment via two air dampers. Branch lines on
the damper housing regulate the air supply to the wind-
shield defroster jets.
On the upper part of the heater unit there are two separate
fresh-air vents, which open out on the instrument panel
through two adjustable jets.
HEATING AND VENTILATION CONTROLS
1. Temperature control
2. Air control, floor
3. Air control, defroster
14. Fan motor switch
ADJUSTABLE FRESH AIR VENT