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Heating, ventilation and air conditioning (HVAC)
| Fig. 1.64. Manual controls heating: 1 - temperature controller; 2 - Switch-saving mode; 3 - the switch of heating of back glass; 4 - Switch mode of air circulation; 5 - switch auxiliary heater or heated windscreen; 6 - switch controlling the distribution of air; 7 - fan speed control
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| Fig. 1.65. Bodies of automatic control of heating: 1.6 - indicator given temperature on the left / right of the cabin; 2 - Switch mode of air circulation; 3 - the switch of the air-to-face; 4 - the switch of the air supply to the legs; 5 - the switch of diffuse air supply; 7 - the switch, or blow the heated windscreen; 8 - the switch of heating of back glass; 9, 15 - the temperature control to the left / right of the cabin; 10 - fan speed control; 11 - the switch (ON / OFF) of HVAC, additional heater; 12 - the switch, or blow the windshield of HVAC (ON / OFF); 13 - the switch of the automatic mode; 14 - the switch saving mode
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| Fig. 1.66. Driving the air in the vehicle interior
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On cars VW Passat B6 can be installed HVAC system or with manual or automatic control. Air conditioning is also installed in all models. Locating Controls HVAC system is shown in Figures 1.64-65. Air is drawn through the grille fairing windshield and into the interior, passing through the filter and, if the heater is turned on, through his radiator. For supplying air to the interior baffles are used, by means of which it is possible to adjust the direction and intensity of air flow. The intensity is regulated by turning knobs located near the vents. Maximum system performance is achieved when fully open deflectors. If necessary, fresh air can be turned off, for example, to prevent unpleasant odors into the cabin or the rapid heating / cooling air in the cabin. For this purpose the mode switch circulation. However, when the mode of air circulation in the cabin quickly becomes stale and the windows to fog - Do not use this mode for too long. The HVAC system operates only when the engine is running and the fan is switched on. Maximum efficiency of the heating system when the engine is achieved.
Heated glass tailgate and windscreen Heated glass works only with the engine running and is switched on / off by an appropriate switch with built-K / A. Heating is switched off automatically after 10 minposle inclusion, or by pressing the switch.
Circulation and ventilation air When you turn on the air circulation (R / L in the corresponding switch on) the air in the passenger compartment is circulated in a closed loop. The air outside the car in the cabin is not supplied. Circulation should be used when driving on dusty roads or in heavy traffic, to avoid falling into the interior of dust, odors and exhaust gases. Furthermore, circulation mode enables very fast temperature drop in the cabin when using K / V.
ATTENTION Do not turn the recirculation mode for a long time because The air in the passenger compartment becomes stale and the windows appear condensate. |
Ventilation mode (R / R switch circulation off) is a normal operation of HVAC.
NOTE Circulation mode is automatically switched off when choosing a blower windscreen and off when reversing or when washing the windshield in order to prevent the ingress of air into the cabin with an unpleasant odor washer fluid. Do not smoke in the car when the circulation mode, because the particles of tobacco smoke are deposited on the evaporator K / V, and will continue to be difficult to get rid of the odor in the cabin. |
Air conditioning Air complements the heating and ventilation system, and cools the air inside the vehicle. The cooling unit operates only when the engine is running at an outside temperature above +5 ?� C, and when you turn on the fan at one of the stages 1-4 switch B. When the refrigeration unit in the cabin is lowered, not only the temperature but also its moisture content. Due to the high humidity of outside air, and also during the cold season being the driver and passengers is improving and misting is prevented.
Cost-effective operation of the air conditioner When the air conditioner drive its compressor is driven by the engine, and therefore the nature of the use of the installation affects the fuel consumption. that the duration of the air conditioner as much as possible to reduce the need to consider the following recommendations: - If the interior of the car is hot standing under the influence of solar radiation, it is recommended for a short time to open the windows or doors to ventilate the car; - Make sure that the air conditioner in the interior of the vehicle does not pass through the outer warm air, for example, through an open window; - If the desired temperature inside the car can be achieved without the inclusion of the air conditioner, it is better to select fresh air mode in the car.
Violations of the air conditioner If you reduce the Cold-productivity of the air conditioner, you must turn it off and turn to the professionals. If there are violations of the air conditioner, it may be due to the following reasons: - Outdoor temperature is below +5 ?� C; - Fuse is blown; You should check the fuse and replace if necessary. If the cause of malfunctions is not blown fuse, switch off the air conditioner and consult a specialist. - Air conditioning is temporarily shut down due to too high coolant temperature.
General information If the air conditioner for a long time is not included, it is possible with the inclusion odor due to the accumulation of deposits on various kinds of evaporation. to avoid unpleasant odor, operate the air conditioner - also during the cold season - at least once a month with the highest level of the fan. At the same time, open for a short time one of the windows. It is recommended not to smoke in the car when the air recirculation mode is switched on, as the particles in cigarette smoke are deposited in the evaporator. This leads to the fact that air is fed into the interior for a long time will have a smell of tobacco smoke, which can be very difficult to get rid of by spending a substantial amount of money for the replacement of the evaporator. At high temperature and high humidity outdoor air may condensate dripping from the evaporator and the formation of puddles under the car. This is normal and is not an indication of leakage of the system. In order to heating, ventilation and air conditioning work reliably, you need an opening for fresh air intake, located in front of the windshield, keep clean from ice, snow and leaves.
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