1975 Datsun 280z FSM - Spooled up Racing

Air Conditioning
HEATER (FRESH) position
C
AIR *.—A
»/C VENT BI-lYVEL f*W mm«Tc "~ otf
I£M£C01D HOT CAW
—— w»- rAN R 0FF 1
« •
2
»
3
•
4
»
:::D C
AIR lever:
FAN lever:
TEMP lever:
In HEATER (FRESH) position
In any position other than OFF
Cold to Hot
Magnet valve - F.I.C.D.
Defroster nozzle
t
AC545
Fig. AC-10 Air flow - HEATER (FRESH) position
1. Air intake door ... Vacuum is
imposed on the actuator of the air
intake door and the door is in the
open position.
2. Mode door. . . Vacuum is introduced
both to Dj and D 2 of the
double-action actuator and the mode
door is in its fully open position. All
the outside air thus flows into the
heater core.
3. Heater door.. . The heater door
is in the open position. Warm air
heated by the core is discharged from
the opening located above occupant's
feet. A small portion of it goes to the
defroster nozzles.
4. Vacuum cock . .. Vacuum is imposed
on the actuator, causing the
AC-10
vacuum cock to open.
5. Fast idle actuator... The actuator
is not in operation.
Temperature of the discharge air
varies with the amount of water flowing
into the heater core via the water
cock. The water cock is controlled by
a control cable from the TEMP lever.