Ground level positioning is the most common form of tank installation. A small household pressure pump is connected to the outlet line to give pressure tap outlets and the hot water system.
Council mains are generally around 276 kPa (40 psi) and household pressure pumps range from 103 – 276 kPa (15 - 40 psi)
Notes:
The tank inlet strainer must be lower than the gutter, allowing at least a slope of 4% or more for the downpipe.
Two or more downpipes can feed into one tank but the overflow volume must match the downpipe volume. In this case the tank would need to have two overflows installed, the same size as the downpipes.