Nordyne R-410A User Information, Safety Information, About The Heat Pump, Digital Thermostat

USER INFORMATION

SAFETY INFORMATION

IMPORTANT: Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

ABOUT THE HEAT PUMP

Your heat pump is a unique, all weather comfort- control appliance that will heat and cool your home year round and provide energy saving comfort. It’s an unknown fact that heat is always in the air, even when the outside temperature is below freezing. The heat pump uses this basic law of physics to provide energy saving heat during the winter months. For example, If the outdoor temperature is 47° F (8° C), your heat pump can deliver approximately 3.5 units of heat energy per each unit of electrical energy used, as compared to a maximum of only 1 unit of heat energy produced with conventional heating systems.

In colder temperatures, the heat pump performs like an air conditioner run in reverse. Available heat energy outside the home is absorbed by the refrigerant and exhausted inside the home. This effi cient process means you only pay for “moving” the heat from the outdoors to the indoor area. You do not pay to generate the heat, as with more traditional furnace designs.

During summer, the heat pump reverses the fl ow of the heat-absorbing refrigerant to become an energy-effi cient, central air conditioner. Excess heat energy inside the home is absorbed by the refrigerant and exhausted outside the home.

Fan	System	Temperature
Mode	Mode	Selector

Figure 1. Digital Thermostat

OPERATING INSTRUCTIONS

Please refer to the thermostat manufacturer’s User manual for detailed programming instructions.

Cooling Operation Only

1.Set the thermostat’s system mode to COOL or AUTO and change the fan mode to AUTO. See Figure 1

2.Set the temperature selector to the desired temperature level. The outdoor fan, compressor, and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level.

NOTE: If the temperature level is re-adjusted, or the system mode is reset, the fan and compressor in the outdoor unit may not start immediately. A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power.

Heating Operation Only

1.Set the thermostat’s system mode to HEAT or AUTO and change the fan mode to AUTO. See Figure 1.

2.Set the temperature selector to the desired temperature level. The compressor, outdoor fan, and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level.

NOTE: If the temperature level is re-adjusted, or the system mode is reset, the fan and compressor in the outdoor unit may not start immediately. A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power.

Emergency Heat

Some thermostats may include a system mode called EM HT or AUX HT, etc. This is a back- up heating mode that should only be used if a problem is suspected. With the mode set to EM HT, etc., the compressor and outdoor fan will be locked off and supplemental heat (electric resistance heating) will be used as a source of heat.Sustained use of electric resistance heat in place of the heat pump will result in an increase in electric utility costs.

Defrost Operation

During cold weather heating operation, the outdoor unit will develop a coating of snow and ice on the heat transfer coil. This is normal

4