1.4Refrigerant circuit – description

The cooling system is used for processing the heat in the inlet air. This is the manner by which the extracted heat is transferred to the water. This process is only possible with the external addition of energy, which takes place in the com- pressor.

In the vaporizer, heat is absorbed from the air and refrigerant in gaseous form and fed to the compressor. In the compressor, the refrigerant is raised up to a higher pressure and energy level, so it can deliver the heat to the water through the con- denser pipe, which is coiled around the tank.

The condensed coolant fluid is throttled down to a lower pressure using the expan- sion valve so it becomes possible to repeat the cooling cycle in the vaporizer.

1.4.1Cooling system - description

The skilled technician must make sure that all refrigerant carrying parts are emp- tied to a level where work may be carried out without any risk to people or materi- als, before repairs and services are carried out.

When repairing and servicing the heat pump in which the refrigerant system has to be opened, always take extra care. If the use of an open flame is needed, (Weld- ing, soldering etc.) special care must be taken in order to prevent fire.

1.4.2Electrical circuit - description

When work is carried out on the heat pump, the main supply must be discon- nected. (Pull the plug.)

When the unit is connected to the supply all local and national regulations must be followed, along with the demands from the power supplier.

1.4.3Water circuit - description

Only water in drinking quality may be used. During installation the choice of material must be taken into account, and made sure those are compatible in the entire circuit. Safety equipment must be installed to prevent over pressure in the system.

All pipe work must comply with water safety regulations.

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A.O. Smith 290 service manual
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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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