2.

Function

2.1

Description

Use of hot tap water heat pump:

The heat pump is only intended to produce hot tap water for domestic use within the specified temperature limits. The sanitary hot water heat pump is a complete unit with a 285 litre hot water tank, extraction fans, heat pump and also equipped with a complete electrical equipment and five models are equipped with a heating coil.

Capacity:

The heat pump is capable of producing a hot water volume of app. 1000 Litres at 45°C. The actual volume depends on the supplied fresh water temperature, air temperature and the pattern of use of hot water. The additional electrical heat- ing element (1,5 kW) may be used to boost the capacity whenever needed. The heat pump only uses app. 27% of the energy compared to a conventional electric boiler.

Heat pump operation:

The control starts the compressor shortly after hot water has been tapped. The compressor will run until the entire tank has been heated to the set temperature again. Usually the heat pump can produce a sufficient amount of hot tap water covering the needs of a common family.

Water heating:

When hot water is drawn off, the tank will be refilled with cold water at the bottom. A sensor measures the temperature at the bottom of the tank and starts the com- pressor if the temperature has fallen 5°C below the set temperature. The com- pressor stops, when the water has been heated to the set temperature. While the compressor operates, the fans run and circulate air through the cooling surface.

Fan operation:

The fan may be set to run continuously, when the compressor has stopped - by selecting level 2 or level 3. This option may be chosen when the heat pump is used as an extraction system in the residential wet rooms. If the input to T4 short circuits, the control is forced to run at 3rd speed. This may be used in order to achieve more extract in e.g. bathroom, while taking a shower. When breaking the short circuit on the input pins to T4, the control will return to its previous step.

Defrosting:

When the temperature difference between the temperature upstream of the cool- ing surface and the temperature of the cooling surface becomes too large (as happens when ice is formed on the cooling surface), the unit goes into defrost mode. The magnetic valve MA 4 opens and the supply air fan stops until the ice has melted and the cooling surface has reached a temperature of app. 5°C. Then the magnetic valve closes again and the supply air fan resumes operation.

2.2Extra capacity

If a situation should occur where the heat pump is not capable of producing enough hot tap water (more people in the house), an extra electrical cartridge in the container can be switched on. Doing so, it is possible to heat up more water. It is possible to set the desired temperature to which the electrical cartridge should heat up the water. (Only use the electrical cartridge when needed, as it uses more energy than the compressor).

The electrical cartridge can be activated manually on the display.

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A.O. Smith 290 service manual Function Description
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290 specifications

The A.O. Smith 290 is a prominent water heater designed to elevate the standards of residential and commercial hot water solutions. This product exemplifies A.O. Smith's commitment to innovation, efficiency, and durability in the water heating industry.

One of the key features of the A.O. Smith 290 is its impressive energy efficiency. Equipped with advanced insulation technology, the unit minimizes heat loss, thus reducing energy consumption and lowering utility bills. This energy-efficient design makes it an environmentally friendly choice for users looking to cut down on their carbon footprint while enjoying reliable hot water.

The A.O. Smith 290 operates using either natural gas or propane, offering versatility depending on the user's preference or availability of resources. Its robust heating system allows for quick recovery rates, ensuring that households or businesses have an ample supply of hot water, even during peak usage times. This capability is particularly beneficial for larger families or establishments requiring significant amounts of heated water for various applications.

Durability is another distinguishing characteristic of the A.O. Smith 290. Built with high-quality materials, this water heater is subjected to extensive testing to ensure it can withstand the rigors of daily use. The unit features a corrosion-resistant tank that prolongs its lifespan and reduces the likelihood of leaks, providing peace of mind to users who demand reliability from their appliances.

Furthermore, the A.O. Smith 290 integrates cutting-edge technology for enhanced usability. It comes equipped with a user-friendly digital thermostat that allows for precise temperature control, enabling users to set their desired water temperature while ensuring safety. In addition, safety features such as a pressure relief valve and thermal shutdown provide added protection for both users and the system itself.

The compact design of the A.O. Smith 290 allows for easy installation in various spaces, making it a versatile option for different settings. Whether installed in a crawl space, utility room, or closet, it efficiently delivers consistent hot water without taking up excessive space.

In conclusion, the A.O. Smith 290 stands out in the market for its energy efficiency, versatility, durability, and advanced technology. It represents a smart investment for anyone in need of reliable hot water, combining performance and efficiency while ensuring user safety and convenience. With its user-centric features, it is suited to meet the demands of modern living, making it a preferred choice among homeowners and businesses alike.
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