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10-1
10 HEATING, VENTILATION AND AIR-CONDITIONING
SYSTEM (HVAC)
10.1 Heating, Ventilation And Air-Conditioning System
(HVAC)
The climate control system enables you to set the cabin at the
desired comfortable condition by controlling airflow, air intake and
temperature control. The HVAC system also helps in defrosting and
defogging/de-misting the windshield and windows.
Engine coolant is utilized to heat the cabin air. For cooling cabin air,
an air conditioning circuit based on the vapor compression
refrigeration cycle is used. The air conditioning system uses a
refrigerant along with a suitable lubricating oil. Although being non-
ozone depleting, the refrigerant is a greenhouse gas, hence once
allowed to escape in the atmosphere, it adversely affects the
environment by contributing to global warming/climate change.
Multiple vents are provided for distributing the air, being force
circulated by the HVAC blower, throughout the passenger
compartment. Various ducts supply air from the HVAC unit to these
vents having adjustable louvers.
Refrigerant used in the system is a hazardous liquefied gas and
is under high pressure. The refrigerant is colorless and has
ethereal or faint sweetish odor. Exposure of refrigerant to the
skin or eyes may cause irritation and frostbite. It can also cause
suffocation, dizziness and loss of concentration. When mixed
with compressed air or certain other refrigerants, it may form
a flammable mixture. Never try to service the HVAC system
yourself which would involve refrigerant handling.
To ensure sufficient air flow and hence adequate HVAC system
performance, the air flow path should be kept free of
obstructions. Keep the system’s air intake, located near the
plenum appliqué, free of snow, leaves and other debris. Also
keep the area in front of the air vents free of any obstruction
inside the cabin.
There are two types of HVAC systems in your vehicle depending on
the variant.
•
Automatic Climate Controller
•
Manual Air Conditioner
HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM (HVAC)
