PROGRAMMABLE ELECTRONIC
THERMOSTATS
The computerized electronic thermostat is actually a sophisticated elec- tronic version of a manual change-over type. This thermostat includes features which allow “set-back” temperature variations for periods of sleep, or while you are away during the day, and means energy savings for you. The thermostat also features a digital clock.
FAN OPERATION SELECTION
A multi-position fan switch allows you to choose the type of fan opera- tion of the indoor fan.
AUTO
With the thermostat fan switch set to “AUTO”, the fan will run intermit- tently as required for either heating or cooling. This position will provide the lowest operating cost. If you purchased one of our thermostats, they have an Intelligent fan mode which continually circulates the air during occupied modes or when you are at home, and can cycle the fan during unoccupied mode or during the night while you sleep to further con- serve energy.
ON
CONTINUOUS FAN OPERATION: With the thermostat fan switch set to “ON”, the indoor fan will not shut off. However, the cooling (AC) or heat- ing (heat pump) systems will still operate as required by room tempera- tures. This provides continuous air filtering and more even temperature distribution to all conditioned spaces.
FAN ONLY OPERATION: On moderate days, usually during spring and fall, when neither heating nor cooling is required, you may want to run only the fan to ventilate, circulate and filter the air in your home or build- ing. Set the comfort control switch to “OFF” and the fan switch to “ON”. Be sure to return the switches to their original positions for normal oper- ation.
START-UP
The maximum and minimum conditions for operation must be observed to assure a system that will give maximum performance with minimum service.
TABLE 1: Application Limitations
| Air Temperature at | | | Air Temperature at | |
| | Outdoor Coil, °F | | | | Indoor Coil, °F | |
Min. | Max. | Min. | Max. |
DB | | DB | DB | | DB | WB | | DB | WB | | DB |
Cool | | Heat | Cool | | Heat | Cool | | Heat | Cool | | Heat |
60 | | -10 | 115 | | 75 | 57 | | 501 | 72 | | 80 |
1.Operation below this temperature is permissible for a short period of time, during morning warm-up.
The comfort control switch is assumed to be in the “OFF” position. If the main power supply to the outdoor and indoor units is off, turn the appro- priate disconnects to the “ON” position. Place the system into operation as follows:
1.Set temperature adjustment to the desired temperature on your thermostat.
COOLING - The higher the setting, the lower the amount of energy con- sumed. Federal Guidelines recommend a setting of 78 °F.
HEATING - The lower the setting, the lower the amount of energy con- sumed. Federal guidelines recommend a setting of 65 °F or lower.
NOTICE
If your cooling and heating temperature adjustments are separate, be sure to set both.
2.After considering “Fan Operation Selection” above, select and set the fan operation mode you desire.
3.Move the comfort control switch to the desired mode of operation (Cooling or Heating) found on your particular thermostat.
POWER FAILURE
When accidents, wind storms, etc. disrupt electrical power supply to your house, switch thermostat to “OFF” position.
SYSTEM OPERATION
MANUAL CHANGE-OVER THERMOSTAT
COOLING YOUR HOME: With the comfort control switch in the
“COOL” position, the system will operate as follows: When the indoor temperature rises above the level indicated by the temperature adjust- ment setting, the system will start. The outdoor unit will operate and the indoor fan will circulate the cooled, filtered air. When the room tempera- ture is lowered to the setting selected, the system will shut off.
HEATING YOUR HOME: If your system includes a heating unit and the comfort control switch is in the “HEAT” position, the system will operate as follows: When the indoor temperature drops below the level indi- cated by the temperature adjustment setting, the system will start. The heating system will operate and the indoor fan will circulate the filtered air. When the room temperature rises to the setting selected, the sys- tem will shut off. Whether heating or cooling, the fan will continue to operate if the fan switch was set in the “ON or Intelligent” position. The “AUTO” setting on the fan switch will allow the fan to shut off when your system does.
ELECTRONIC THERMOSTAT
The computerized electronic thermostat, when programmed, will func- tion automatically to operate the system as follows: When the indoor temperature rises above the higher (COOL) setting, the outdoor unit will operate and the indoor fan will circulate the cooled, filtered air. When the room temperature is lowered to the selected level, the system will shut off. The indoor fan will either shut off or run continuously, depend- ing upon your choice of fan switch setting. When the indoor tempera- ture drops below the lower (HEAT) setting, the heating system will operate, and the indoor fan will circulate the heated, filtered air. When the indoor temperature rises to the selected setting, the system will shut off. The indoor fan will either shut off or run continuously, depending upon your choice of fan switch setting.
TO MAXIMIZE OPERATING EFFICIENCY
HEATING CONSERVATION
For the most efficient operation, keep storm windows and doors closed all year long. They not only help insulate against heat and cold, but they also keep out dirt, pollen, and noise.
Closing 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.
Keep lamps, televisions, or other heat producing sources away from the thermostat. The thermostat will sense this extra heat and will not be able to maintain the inside temperature to the desired comfort level.
