SAFETY CONSIDERATIONS
Improper installation adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes, the current editions of the National Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the Canadian electrical Code CSA C22.1.
Recognize safety information. This is the 
. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the
Note: Installer: This manual should be left with the equipment user.
!CAUTION
FOR YOUR SAFETY
Failure to follow this caution may result in personal injury.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
!WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
Do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the unit and to replace any part of the control system which has been under water.
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before performing recommended maintenance, be sure the main power switch to unit is turned off.
OPERATING YOUR UNIT
The operation of your heat pump system is controlled by the Infinityr User Interface (UI). You may adjust the temperature manually through the UI or program the UI for automatic control. See UI manual for detailed instructions.
To better protect your investment and to eliminate unnecessary ser- vice calls, familiarize yourself with the following facts:
1.During heating, increasing the desired temperature setting more than 2°F (1.1°C) may cause the supplemental heaters to be turned on for a short period of time to satisfy the demand. Needless use of the supplementary heat reduces potential energy savings.
2.Ice or frost tends to form on the coil during winter heating operation. Your unit is designed to automatically melt the ice. When in this defrost cycle, it is normal for steam or fog to rise from the outdoor unit, and for water to drain from the outside of unit. Do not be alarmed!
To start the unit:
1.Turn on the electrical power supply to unit.
2.Set MODE control to desired mode and the User Interface for automatic control.
To shut off unit:
Note: If the unit is being shut down because of a malfunction, call your dealer as soon as possible.
1.Set system MODE control to OFF.
2.Turn off the electrical power supply to unit.
Cooling Mode
With the UI control set to COOL, your unit will run in cooling mode until the indoor temperature is lowered to the level you have se- lected. On extremely hot days, your unit will run for longer periods at a time and have shorter “off” periods than on moderate days.
Heating Mode
With the UI control set to HEAT, your unit will run in heating mode until the room temperature is raised to the level you have selected. Of course, your unit will run for longer periods to maintain a com- fortable environment on cooler days and nights than on moderate ones.
Supplemental Heat
Your unit is your primary heating source. Your system may also be equipped with a supplemental heating source such as electric heat. On cold days and nights, your system will automatically turn on the supplemental heat, as needed, in order to maintain the level of com- fort you have selected.
Defrost Mode
When your unit is providing heat to your home or office and the out- door temperature drops below 45°F (7.2°C), moisture may begin to freeze on the surface of the coil. If allowed to build up, this ice would impede airflow across the coil and reduce the amount of heat ab- sorbed from the outside air. So, to maintain
The defrost mode starts at a preset time interval of 30 minutes, al- though, it may be reset to 60, 90 or 120 minutes. Defrost will start at the preset time only if the ice is sufficient to interfere with normal heating operation.
After the ice is melted from the coil, or after a maximum of 10 min- utes in defrost mode, the unit automatically switches back to normal heating operation.
Do not be alarmed if steam or fog appears at the outdoor unit during defrost mode. Water vapor from the melting ice may condense into a mist in the cold outside air.
During certain weather conditions such as heavy snow and freezing rain it is not uncommon for ice to build up on the unit grille. This is
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