HVAC - Mechanism & Function: Specifications Subaru Forester SG

SPECIFICATIONS

HEATER & COOLING UNIT SPECIFICATION

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

1. Ventilation (VENT) mode The passage leading air from the evaporator to the ventilation outlet (VENT) is made straight to reduce air flow resistance. When the air temperature is necessary to be adjusted, heated air is blown at right angles against the flow of cool air from the evaporator. This allows the airs to mix thoroughly.
2. Foot/face (BILEVEL) mode The air that has passed through the evaporator is divided into two directions. A part of the air passes through the heater core where the air is heated. The remaining air is unheated and flows directly to the air outlet, where the unheated air is mixed with the heated air from the heater core. The mixed air flows to the vent grille and heat grille.
3. Heating (HEAT) mode The air that has passed through the evaporator is heated at the heater core and flows through the foot door to the foot duct. To defog the windshield, the defroster door is also slightly open in heater mode operation and warm air will flow to the defroster duct too.
4. Defroster (DEF) mode The air from the evaporator passes through the heater core and the warmed air flows through the defroster door to the defroster (DEF) duct. The air passages toward the defroster (DEF) outlet is long enough to equalize the airflow rate at all outlets.
5. Defroster (DEF)/Heater (HEAT) mode The air from the evaporator flows through the heater core and the warmed air flows to the defroster (DEF) duct and foot duct to defog the windshield while sending warm air to the legs. The warm air that has flowed to the defroster duct will be delivered from the front defroster duct and side defroster duct to defog the windows.

Scheme 6

1. The blower unit uses a low-noise-type motor.

Scheme 7

1. The ventilation duct and defroster duct are located behind the instrument panel. Both the ducts A have been modified in the shape to reduce air flow resistance.
2. Defrosting air flow is divided at the center, so that air can flow out evenly through a wide center defroster as well as right and left side defrosters.

MANUAL AIR CONDITIONING SYSTEM

Scheme 8

AUTOMATIC AIR CONDITIONING SYSTEM

Scheme 9

HIGH/LOW PRESSURE CONTACT (COMPRESSOR ON/OFF CONTROL)

HIGH/LOW PRESSURE CONTACT SPECIFICATION

MID PRESSURE CONTACT (ELECTRIC COOLING FAN OUTPUT CONTROL)

MID PRESSURE CONTACT SPECIFICATION