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What is a Hot Water Circulating Pump?

September 28, 2016

If wet hands are to be dried and hot radiators are to dispense room-appropriate heat, then a hot water circulating pump is required. Designated as the heart of a building's water supply, this mechanism works much like our own hearts, except its hot water that courses through these metal and plastic arteries, not blood. Let's take a closer look at the core functions of this important device.

How Does a Heating Pump Operate?

The mechanical parts of a hot water circulating pump are actuated by an electrical power supply. Wound coils in the motor turn a drive shaft, which then turns the impeller at some speed. Interestingly, masses of torque aren't usually called for because the lightweight duties of the pump normally only encompass one or two floors in a building. Of course, small domestic heating pumps are designed for small to medium-sized homes, but apartment complexes need more power if hot water is to be instantly available to the many occupants living way above ground level. In this case, larger variants are recommended, or the heated water supply will likely station additional pumps on each floor, all the better to boost the water onward as it rises through multiple storeys.

Where Does The Water Heater Fit In?

Next to enter this pumping scenario, a water heater joins the process. Water is pumped from the tank, an appliance that's either fire-heated or electrically heated, and forced into the circulatory system. Typically, the pump is located next in line with this tank, so the loading duties of the device are simplified. Exceptions to this layout exist, of course. The aforementioned large residential complex would certainly be classed as an exception because the network of pipes is stacked to account for the many floors of the structure. Thermostatically controlled, water heaters, heat exchangers (boilers) and other system components use numerous thermostatically controlled configurations to manage hot water. Alternatively, an average home simply requires one or two hot water circulating pumps, a basement-ensconced water heater, and a single thermostat to safely regulate the temperature of the hot water.

A hot water circulating pump lives in obscurity in a building's plant room or a home's basement. It works industriously to pump the heated water produced by an electrically or fire-heated water tank. Other desirable features include quiet operability, a wattage rating that intelligently matches circulated water to the size of the water system, and a maintenance-free build that guarantees a hassle-free lifespan.

Parker Pumps

29B Ormond Rd., East Geelong VIC 3219

Phone: (03) 5229 7443

Email: sales@parkerpumps.com.au

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