Typical Thermostat Operation

Your thermostat is the control center for your Split System. It is very important that the thermostat be located where it can best “sense” the average room temperature. It must not be located where it is exposed to hot or cold drafts or to hot or cold spots on the wall, such as those received from outside walls, walls with pipes inside, or from openings into the attic. Because of the wide variety of programmable thermostats available, we cannot describe how all of them work. However, a typical thermostat has two switches: a SYSTEM switch and a FAN switch.

WARNING

To avoid possible equipment damage, personal injury, fire or death, the following instructions must be observed regarding unit location, air requirements and operating procedures.

The SYSTEM switch can include settings of HEAT, OFF, COOL, AUTO:

HEAT – Your comfort system provides heat when the temperature in the room falls below the temperature selected. No matter how warm the room becomes, cooling will not be pro- vided.

OFF – Your comfort system will not provide heating or cooling, no matter how cold or hot the room becomes.

COOL– Your comfort system provides cooling when the temperature in the room rises above the temperature selected. No matter how cold the room becomes, heat will not be pro- vided.

AUTO– Your comfort system will provide heat when the temperature in the room falls below the temperature selected, and will provide cool- ing when the temperature in the room rises above the temperature selected. With most of these thermostats, you will have a tem- perature range in which neither heating or cooling is being provided. The AUTO set- ting will help your building avoid tempera- ture extremes, but it may increase your operating costs.

Room Temperature

 

Cool/Heat

 

 

Thermostat

 

 

 

Temperature

 

 

 

Control Dials

 

 

 

 

 

 

 

 

 

 

 

System

Fan

Action

 

 

 

Switch

Switch

 

 

 

OFF

AUTO

None

 

 

 

COOL

AUTO

System only cools, fan

 

 

 

cycles off and on.

 

 

 

COOL

ON

System only cools, fan

 

 

 

runs all the time.

 

 

 

HEAT

AUTO

System only heats, fan

 

 

 

cycles off and on.

 

 

 

HEAT

ON

System only heats, fan

 

 

 

runs all the time.

 

 

 

OFF

ON

No heating or cooling,

 

 

 

fan runs all the time.

 

Fan Switch

Cool/Heat

 

 

 

 

Switch

 

 

Typical Thermostat

EMERGENCY

HEAT – EMERGENCY HEAT is only used with heat pumps. Emergency heat means the com- pressor (i.e., the outdoor unit) is turned off, and your backup source (if present) will pro- vide heat when the temperatures in the room falls below the temperature selected. (No matter how warm the room becomes, cooling will not be provided.) The backup source is usually electricity, but it may be a gas or oil furnace. The EMERGENCY HEAT setting may be used if you suspect a prob- lem exists with the heat provided by the compressor, but your dealer is not able to service it immediately. With some comfort systems, the EMERGENCY HEAT setting may also be used to provide a quicker warm-up of the room. Once the warm-up is completed, you should usually return the system switch to the HEAT or AUTO setting. If you leave the system switch in the EMER- GENCY HEAT setting, it may increase your operating costs.

NOTE: Keeping your windows closed whenever the thermostat SYSTEM switch is in the HEAT, COOL or AUTO setting will keep operating costs down.

The Fan switch may include settings of AUTO and ON:

AUTO– The indoor fan is operating when heating or cooling is being provided. NOTE: With some comfort systems, the indoor fan may continue to run for a short time after the compressor shuts off. With most gas fur- naces, the indoor fan will start a short time after the burners are lit, and will keep run- ning for a short time after the burners shut off. When your comfort system is not heat- ing or cooling, the fan will not run.

ON – The indoor fan runs continuously.

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Amana R-410A user manual Typical Thermostat Operation

R-410A specifications

Amana R-410A is a high-efficiency refrigerant widely utilized in modern air conditioning and heat pump systems. As a hydrofluorocarbon (HFC), R-410A replaces the older R-22 refrigerant which was phased out due to environmental concerns regarding ozone depletion. One of the main features of R-410A is its ability to provide greater energy efficiency, making it a popular choice for both residential and commercial HVAC systems.

One of the significant characteristics of R-410A is its higher pressure compared to R-22. This characteristic not only enhances the cooling performance of air conditioning units but also necessitates specific design considerations for equipment that utilizes this refrigerant. Manufacturers must ensure that their systems are built with components capable of handling the increased pressures associated with R-410A.

R-410A operates best at a higher temperature glide, which means it can maintain a more consistent temperature across its cooling cycle compared to some other refrigerants. This property allows for improved climate control within a space, as it reduces the likelihood of temperature fluctuations and enhances comfort. The refrigerant's molecular composition contributes to improved heat transfer efficiency, which leads to reduced energy consumption and lower operating costs.

Additionally, R-410A has no ozone-depleting potential (ODP), making it a more environmentally friendly option in the refrigerants market. Its global warming potential (GWP), while still a concern, is significantly lower than that of many older refrigerants. As regulation becomes stricter regarding climate change impact, the adoption of R-410A is likely to continue, particularly as buildings upgrade their systems.

Amana has integrated advanced technologies into systems operating on R-410A, such as variable speed compressors and smart thermostats, which adjust operation based on real-time conditions to maximize efficiency. These innovations allow for more precise control over indoor environments, further enhancing energy savings.

In summary, Amana R-410A offers key advantages such as increased efficiency, environmentally friendly properties, and enhanced temperature control. As technology continues to evolve, the ongoing exploration of refrigerant options will keep R-410A at the forefront of HVAC solutions for years to come. Its balance of performance and environmental considerations makes it a primary choice in the quest for sustainable heating and cooling systems.