4.Placement into service / operation

The heat pump may only be started with a full water tank!

The unit must always be disconnected from the power supply when the front cover is opened!

When the unit is disconnected, wait for the fan to stop completely before the cover is opened!

Before starting the unit makes sure all connectors are in place, and make sure the cable between display and controller is mounted correctly!

4.1Demands to the hot water circuit

In the hot water system the following materials may be used:

-Copper

-Stainless steel

-Brass

-Plastics

Depending on the used materials in the water circuit (in the house) wrong combi- nations of materials may lead to corrosion damages. Special attention is required when using galvanized steel or aluminium materials.

4.2Starting to use the water circuit

-Fill the tank using the valve on the supply line, and let the air out through one of the upper hot tap water valves until air no longer is present in the tapped water.

-Check the entire water circuit for tightness.

-Connect the heat pump to the power supply.

After starting to use the system the entire water circuit must be checked for tightness.

4.3Placement into service of the water circuit

Fill the container via the connecting branch, and aerate the tank by letting one of the hot water taps located at the highest elevation within the dwelling stand open until air no longer comes out with the water.

The container can normally hold 285 litres of water.

Check the entire circuit to be sure it is sealed.

4.4Electricity – connecting

Connect the heat pump to the public electrical grid.

4.5Cooling circuit

The cooling circuit is delivered ready to run and no work need be performed on it. The electronic controls automatically take over all functions concerning the operation of the compressor as well as the ventilator.

If needed, set the controls to the desired water temperature. The factory setting is 50° C (see the operating instructions for more detailed directions).

52

Page 52
Image 52
A.O. Smith 290 service manual Placement into service / operation

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.