Are you wondering what DHW pumps are, what functions they have and how to set them up properly? Is a DHW circulation pump a mandatory element of every hydraulic installation? We answer.
Check out the circulation pumps at the Onninen wholesaler
DHW pump functions
A DHW pump is a special solution that is used in hydraulic installations. Its installation is not mandatory, but it definitely makes everyday life easier. The most important function of the pump is to ensure a continuous flow of water, without significant changes in its temperature, between the source and the receiver, such as a shower head. In practice, this is a great convenience, because the lack of a circulation pump means that the water in the system cools down. Practically speaking? In a system in which a DHW pump is used, after turning on a tap that is a few or a dozen meters from the hot water source, you can expect hot water after just a few seconds. If there was no pump, then immediately after turning on the tap, cold water would flow for some time until all the cooled liquid drained from the installation.
The most important function of the DHW pump is therefore to pump hot water to all sources in the building in the shortest possible time and while maintaining maximum energy efficiency.
How to set the DHW pump?
The condition for effective operation is the correct selection of the device. The most important parameters are efficiency and lifting height. In addition, the device must be properly installed and optimally set. It should be noted that in the case of pumps adapted only for heating utility water, models with significantly lower heating power are available than those that are also used for heating real estate.
A very important issue is the correct installation of the device, depending on whether these are models with a storage tank or without. Only when the entire installation is properly done, you can start to properly set the device. Its place in the system is important, but also the operating parameters. The acceleration of hot water supply is one of the advantages, but when setting the pump operating parameters, it is important to remember to properly set the temperature control. The pump will only start when the water temperature in the system drops below a certain level.
Adjusting the operating parameters for DHW pumps also includes setting the temperature limit, which protects the device from overheating and failure. It is also possible to protect the device and its rotors from blocking.
Depending on the model, it is also possible to control the operating time of the device if it is equipped with a timer.
Domestic hot water pumps available at Onninen installation wholesaler
Onninen offers various device variants. A threaded DHW pump and a flanged connection, which are also adapted to pump drinking water, such as the Onnline CP15-1.5 circulation pump model. This is a model that you can easily connect to a standard socket. A big advantage is the positive opinion confirmed by a certificate issued by the National Institute of Hygiene, thanks to which you can be sure that the water will be of good quality. For many, the price will also be important.
Another good solution is the electronic pump for drinking water circulation, Onnline Pro 15-1/65 B, 1Rp1/2" . Thanks to the Rp1/2" threaded connection and the spherical motor with a permanent magnet, the pump guarantees trouble-free installation and reliable operation. It is ideal for applications with a liquid temperature in the range of +5°C to +95°C, offering an impressive Qmax capacity of up to 1.05 m3/h, and a lifting height of Hmax up to 1.04 m. The set includes not only the pump itself, but also additional elements that facilitate installation and use. The non-return valve and thermal shield ensure the safety and efficiency of the system, reducing the risk of damage and ensuring optimal pump operation.
The Grundfos UP 20-15N circulation pump is also a very good quality offer. One of the biggest advantages is the dimensions of the device. To build in the pump, 150 mm is enough, thanks to which this model will work even in small, hard-to-reach spaces. The solution was developed and prepared by the Grundfos Pompy Sp. z o. o. brand, so you can be sure that you are getting equipment of excellent quality, in which individual components are proven and durable. This is an ideal solution for those who care about energy efficiency. Low power consumption and high efficiency of operation allow you to reduce the amount of electricity used and thus the operating costs of the device.
In addition to DHW pumps with threaded connections, our offer also includes flange models, such as the MAGNA3 40-120 F 1x230V circulation pump . A technologically advanced device with a fairly universal purpose. It will work great in both heating and cooling installations. With a built-in convenient, electronic control, thanks to which you can set the device's operating parameters very precisely. This allows you to reduce the amount of energy used, and also significantly reduce operating costs.