All E*TS systems are equipped with balance point control to provide even more efficient operation. This control will prevent the electric heater from being energized when the outdoor air is above some predetermined temper- ature setting (0 to 45° F). At higher temperatures, your system will provide all the heat your home will ever need. At lower temperatures, the supplemen- tal electric heat will be energized to keep your home comfortable.
When the outdoor air is cool and moist, frost may form on the surface of your outdoor coil. When this frost builds to a certain point, your system will switch to a defrost cycle. Although you may feel cooler air coming from your registers, DO NOT adjust your thermostat. The frost will melt quickly, and your system will return to normal operation auto- matically.
FIGURE 2:
COOLING CYCLE
Switch your thermostat to cool. Select a comfortable thermostat temperature setting, typically between 75 and 80°. Comfort sensations vary with individu- als. The lower the indoor temperature desired, the greater will be the number of hours your unit must operate.
Set your thermostat 2 or 3° F below normal several hours before entertain- ing large groups during hot weather. People give off considerable heat and moisture.
On an extremely hot day, the indoor temperature may rise 3 to 6° F above the thermostat setting. Properly selected equipment does not have the capacity to maintain a constant indoor temperature during this peak load.
oversized system would operate much less efficiently at all other conditions.
FIGURE 3:
TO MAXIMIZE OPERATING EFFICIENCY
HEATING CONSERVATION
For the most sufficient operation, keep storm windows and doors on all year long. They not only help to insulate against heat and cold, but keep out dirt, pollen and noise, too.
Closing the drapes at night, keeping fireplace dampers closed when not in use, and running exhaust fans only when necessary, will help you to retain the air you have already paid to heat.
COOLING CONSERVATION
To comfortably cool your home, your heat pump must remove both heat and humidity. Don't turn your system off even though you will be away all day. On a hot day, your system may have to operate between 8 and 12 hours to reduce the temperature in your home to a normal comfort level.
Keep windows closed after sundown. While the outdoor temperature at night may be lower than indoors, the air is generally loaded with moisture which is soaked up by furniture, carpets, and fabrics. This moisture must be removed when you restart your sys- tem.
The hotter the outside temperature, the greater the load on your system. Therefore do not be alarmed when your system continues to run after the sun has set on a hot day. Heat is stored in your outside walls during the day and will continue to flow into your home for several hours after sunset.
Use your kitchen exhaust fan when cooking. One surface burner on "High" requires one ton of cooling. Turn on
your bathroom exhaust fan while showering to remove humidity.
You can also help your system in the summer by closing drapes or blinds and by lowering awnings on windows that get direct sunlight.
CARE OF SYSTEM
A periodic inspection, cleaning, lubrica- tion and adjustment of your heat pump is available from your dealer. Be sure to ask him about this service. For those who prefer to
COIL CARE
Keep outdoor unit free of snow, foliage and grass, grass clippings, leaves, paper, and any other material which could restrict proper air flow in and out of the unit. The coil may be vacuumed to remove any debris from between the fins.
If the coil becomes excessively dirty, turn the Main Disconnect Switch to “OFF” and wash the coil with your gar- den hose. Avoid getting water into the fan motor and control box. Flush dirt from base pan after cleaning the coil.
FILTER CARE
Inspect the air filter(s) at least once a month. If they are dirty, wash reusable filters with a mild detergent per manu- facturer's recommendations. Replace disposable filters with new filters.
Install the clean filters with “air flow” arrow in the same direction as the air flow in your duct. Filters should be clean to assure maximum efficiency and adequate air circulation. Drapes, furniture or other obstructions blocking your supply and return air grilles will decrease efficiency.
NOTE: There will be no heat available until power is reestablished.
HEATING SEASON
1.Leave on Emergency Heat for at least 8 hours after electrical power is reestablished if the power was off more than 8 hours.
2.Switch thermostat back to Heating or Auto.
COOLING SEASON
1.Switch thermostat to Off position.
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