Craftsman 79937 Spezifikationen PDF herunterladen (Seite 40)

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Filters

Some warm air furnaces have built-in filters, usually found close to the furnace, where the cooled air

returns from the rooms. These filters remove dirt and dust from the air. For efficient heating they

should be replaced at the beginning and in the middle of each heating season. In some areas, more

frequent changing is desirable. See the instruction booklet for you heating system for more specific

directions.

Air Conditioning

To fully and efficiently utilize your air conditioning system, you must understand that it is a total,

whole-house system. The air conditioner is the mechanism in your home which produces cool air.

The air conditioning system involves everything inside your home, including drapes and windows. It is

a closed system, which means that the interior air is continually recycled and cooled until the desired

air temperature is reached. Warm outside air disrupts the system and makes the air conditioner work

harder. Therefore, you must keep all windows closed. Heat from the sun that comes through

uncovered windows is intense enough to overcome the cooling effect of the air conditioning unit. It is

recommended that window dressings be closed on windows exposed to the sun.

Timing is important in the operation of an air conditioning system. Unlike a light bulb- which provides

instant service when you flip a switch – the air conditioning unit only begins a process when it comes

on. For example, if you come home at 5:30 p.m. on a day when the temperature has reached 90

degrees then set your thermostat to 78 degrees; it will take a long time to reach this temperature. All

day long, the sun has been heating the entire house; the walls, the carpet, the furniture and the air. At

5:30, the air conditioner starts cooling the air, but the walls, carpet and furniture release heat

counteracting this cooling. Instead, you should set the air conditioning at a moderate temperature in

the morning while the house is cooler, allowing the unit to maintain the cooler temperature through

the day counteracting the heat penetration. This setting then may be lowered lightly when you arrive

home. The results will be much better.

An air conditioning system should be capable of maintaining a temperature differential of 15 degrees

below the outside temperature, measured at the center of a room at a height five feet above the floor.

Temperature settings below 78 degrees are often possible, but are not promised by the manufacturer.

Setting the thermostat at 60 degrees will not cool the home faster, and can result in the unit “freezing”

up and not performing at all. Extended use under such conditions can damage the unit. Never turn

the thermostat below 70 degrees when the air conditioner is on.

To prolong the life of your air conditioning system and increase your comfort, set the thermostat at 76

degrees in the summer and forget it. To increase system’s efficiency and conserve fuel, close

windows and doors tightly, turn off unused lights and heat-producing appliances, and close draperies

on windows that receive direct sunlight.

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Craftsman 79937 Spezifikationen Seite 40