The first inequality means that the distance between x and c is greater than 0 and that x â  c, while the second indicates that x is within distance Î´ of c. Note that the above definition of a limit is true even if f(c) â  L. Indeed, the function f need not even be defined at c.
Once inside a hot water heater, however, Legionella bacteria multiplies and is conveyed through the household plumbing, where it may be inhaled in the aerosol mist that accompanies showering, bathing or even washing dishes in a sink. Very young children and elderly people are particularly at risk.
The bases of the Aqua-Hot unit is that it operates like hot water heater. The unit has a fluid that is kept at Approx 184 degrees. Upon demand from the thermostat a pump will circulate warm water through a radiator and a low speed fan will force air across the radiator and into your living area.