Are you wondering what DHW pumps are, what functions they have and how to set them properly? Is a hot water circulation pump a mandatory element of every hydraulic installation? We reply.
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Functions of the domestic hot water pump
The DHW pump is a special solution used in hydraulic installations. Its installation is not obligatory, but it definitely makes everyday life easier. The most important function of the pump is to ensure continuous water flow, without significant changes in its temperature, between the source and the receiver, such as a shower head. In practice, this is a big help because the lack of a circulation pump causes the water in the system to cool down. Practically speaking? In a system where a hot water pump is used, after turning on the tap, which is located a few or a dozen or so meters from the hot water source, hot water can be expected after just a few seconds. If there was no pump, then immediately after opening the tap, cold water would flow for some time until all the cooled liquid drained from the installation.
The most important function of the domestic hot water 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 up the domestic hot water pump?
The condition for effective operation is the proper selection of the device. The most important parameters are efficiency and lifting height. In addition, the device must be properly mounted and optimally positioned. It should be noted that in the case of pumps designed only for heating domestic water, there are models available with a much lower heating power 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 or without a tank. Only when the entire installation is properly completed can you start properly setting up the device. Its place in the system is important, but so are its operating parameters. Speeding up the delivery of hot water 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 of DHW pumps also includes setting the limit temperature, which helps protect the device against overheating and failure. It is also possible to protect the device and its rotors against blocking.
Depending on the model, it is also possible to control the operating time of the device if it is equipped with a timer.
Hot water pumps in the offer of the Onninen installation wholesaler
Onninen offers various device variants. Threaded hot water pump with a flange connection, which is also suitable for pumping drinking water, e.g. in 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 a positive opinion confirmed by a certificate issued by the National Institute of Hygiene, so you can be sure that the water will be of good quality. For many people, the price will also be important.
An electronic pump for circulating drinking water, Onnline Pro 15-1/65 B, 1Rp1/2", will also be a good solution. Thanks to the Rp1/2" threaded connection and a spherical motor with a permanent magnet, the pump guarantees trouble-free installation and reliable operation. It is ideal for liquid temperature applications in the range of +5°C to +95°C, offering an impressive Qmax capacity of up to 1.05 m3/h, and a head Hmax of up to 1.04 m. The set includes not only the pump itself, but also additional elements facilitating installation and use. The check valve and heat 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 proposition. One of the biggest advantages is the dimensions of the device. 150 mm is enough to install the pump, making this model suitable even in small, hard-to-reach spaces. Solution developed and prepared by the Grundfos Pompy Sp. brand. z o. o., so you can be sure that you are receiving 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 operating efficiency allow you to reduce the amount of electricity consumed 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 quite universal purpose. It is perfect for both heating and cooling installations. With built-in convenient electronic control, thanks to which you can very precisely set the operating parameters of the device. This allows you to limit the amount of energy consumed and significantly reduce operating costs.