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WARNING
For proper operation, the inlet water pressure must be between
140kPa (20psi) and 690kPa (100psi) except for Model XFN12 where
the minimum is 210kPa. Lower pressure will mean low flow rates.
If the inlet pressure exceeds 690kPa a pressure reduction valve must
be fitted prior to the filter.
If water hammer is prevalent a water hammer arrestor must also be
fitted prior to the filter.
The filter should be located far enough from any water heaters to
avoid hot water backup to the filter.
The filter must be protected against freezing water temperatures.
Backwash this unit at least weekly to prevent media compaction and
channeling. As the valve is designed to bypass during backwash,
the outlet water should not be used during backwash or preferably
isolated during backwash.
If grit or sand is present in the water supply remove it with a coarse
(200 micron or similar) in-line strainer to prevent damage to valve
components and seals.
FAILURE TO OBSERVE THE ABOVE WILL VOID WARRANTY.
If connecting to a public water supply a backflow preventer may have
to be installed – check with the water supplier.
