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.
FIGURE 1: Programmable Electronic Thermostat
FIGURE 2: Programmable Electronic Thermostat
FAN OPERATION SELECTION
A
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.
NOTE: If your cooling and heating temperature adjustments are sepa- rate, 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.
TABLE 1: APPLICATION LIMITATIONS |
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| Air Temperature at |
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| Air Temperature at |
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| Outdoor Coil, °F |
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| Indoor Coil, °F |
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Min. | Max. | Min. | Max. | ||||||||
DB |
| DB | DB |
| DB | WB |
| DB | WB |
| DB |
Cool |
| Heat | Cool |
| Heat | Cool |
| Heat | Cool |
| Heat |
60 |
| 115 |
| 75 | 57 |
| 501 | 72 |
| 80 | |
1.Operation below this temperature is permissible for a short period of time, during morning
CARE OF SYSTEM
It is strongly recommended that regular periodic preventative mainte- nance be performed on this equipment. The person most familiar with the equipment in your H.V.A.C. system is a dealer. The dealer can ensure your maintenance program meets the conditions of the War- ranty”, maximize the efficiency of the equipment, and service your unit within the federally mandated guidelines with regard to unlawful dis- charge of refrigerants into the atmosphere.
2 | Unitary Products Group |
