High-Pressure Instantaneous Hot Water System Installation
The Triton Xerophyte Mixer Unit MUST
be installed with a multipoint on-demand
gas water heater of a fully modulating
design (i.e. where the water draw-off rate
indirectly controls the gas flow rate to the
burner).
A drop tight pressure reducing
valve MUST be fitted if the supply
pressures exceed 500kPa (5 bar) running.
It is recommended that an expansion vessel
is fitted (and regularly maintained) if any form,
of backflow prevention device is fitted i.e.
pressure reducing valve (PRV).
This will ensure that excess expansion or
pressure pulses DO NOT damage the product.
This may already be installed within the
boiler (check with manufacturer) and is in
addition to the normally larger central
heating expansion vessel.
The layout and sizing of pipework MUST
be such that nominally equal inlet
supply pressures are achieved and the
effects of other draw-offs are minimised.
A non-return valve MUST be fitted
before the expansion valve (Fig 1).
Fig 1 Instantaneous hot water
systems e.g. combination boilers /
on-demand water heater
Typical Suitable
Installations
12
Controller
Unit
