can cycle the fan during unoccupied mode or during the night while you sleep to further conserve energy.
ON
CONTINUOUS FAN OPERATION: With the thermostat fan switch set to “ON”, the indoor fan will not shut off. However, the cooling and heating systems will still operate as required by room tempera- tures. This provides continuous air filter- ing 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 building. 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 operation.
START-UP
Do not operate this unit when outdoor temperatures are below 60°F as this will cause damage to the unit.
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 appropriate discon- nects to the “ON” position. Place the system into operation as follows:
1.Set temperature adjustment to the desired temperature on your thermo- stat.
COOLING - The higher the setting, the lower the amount of energy consumed. The National Bureau of Standards rec- commends a setting of 78 °F.
HEATING - The lower the setting, the lower the amount of energy consumed. Federal guidelines recommend a set- ting of 65 °F or lower.
NOTE: if your cooling and heating tem- perature 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. dis- rupt electrical power supply to your house, switch thermostat to “OFF” posi- tion. CAUTION: if the power was off more than 8 hours DO NOT switch to “COOLING” or “AUTO” until electrical power has been
SYSTEM OPERATION
MANUAL CHANGE-OVER
THERMOSTAT
COOLING YOUR HOME - With the comfort control switch in the “COOL” position, the system will operate as fol- lows: When the indoor temperature rises above the level indicated by the temperature adjustment setting, the system will start. The outdoor unit will operate and the indoor fan will circulate the cooled, filtered air. When the room temperature is lowered to the setting selected, the system will shut off. HEAT- ING 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 indicated by the temper- ature adjustment setting, the system will start. The heating system will operate and the indoor fan will circulate the fil- tered air. When the room temperature rises to the setting selected, the system 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 thermo- stat, when programmed, will function 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, fil- tered air. When the room temperature is lowered to the selected level, the sys- tem will shut off. The indoor fan will either shut off or run continuously, depending upon your choice of fan switch setting. When the indoor temper- ature is lowered to the selected level, the system will shut off. The indoor fan will either shut off or run continuously, depending upon your choice of fan switch setting. When the indoor temper- ature drops below the lower (HEAT) set- ting, the heating system will operate, and the indoor fan will circulate the heated, filtered air. When the indoor temperature rises to the selected set- ting, the system will shut off.
CARE OF SYSTEM
YORK strongly recommends regular periodic preventative maintenance on this equipment. The person most familiar with the equipment in your H.V.A.C. system is a YORK dealer. The YORK dealer can ensure your maintenance program meets the con- ditions of the “YORK Warranty”, maxi- mize the efficiency of the equipment, and service your unit within the feder- ally mandated guidelines with regard to unlawful discharge of refrigerants into the atmosphere.
COIL CARE
Keep the outdoor unit free of foliage, grass clippings, leaves, paper, and any other material which could restrict the proper air flow in an 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 garden hose. Avoid getting water into the fan motor and control box. Flush dirt from base pan after cleaning the coil.
Unitary Products Group | 3 |
