All SolarArk solar hot water storage tanks are supplied complete with a high quality electrical heating element (electric boosting) as standard. They can be specified as a “mid” or “bottom” mount position, this allows each system to be tailored to the clients hot water needs and usage patterns. It should be noted that mid element tanks will have typically less than half the total stored capacity of hot water.
The element supplied with our tanks is a 3.6kW copper element or if required an Incaloy element can be specified for harsh water quality. Each element is controlled via a control thermostat that is preset to 60°C. All our electrical components are fitted to the tank to ensure minimum heat loss and maximum weather protection.
Why do you need a solar hot water electric booster?
When the solar contribution is low, for example consecutive overcast days, the electric element will make up the drop in solar contribution. In addition to make up for poor weather the element will also compensate for heat loss from the storage tank.
The majority of installations the boost is connected to the “off peak tariff” allowing the storage tank to heat on cheaper rate power. If an off peak tariff is not available it is good practice to install an automatic timer to power the element in the evening or better still overnight.
Each household water usage is different and depending on the household the timer can be operated manually. The element can be switched on for additional boosting to reduce the chance of running out of hot water, but please note a full tank of water takes approximately three to four hours to re heat fully.
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