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Sizing & Location
PROTECTING HEAT EXCHANGERS
HydroFLOW is best fitted to the cold water supply or make up water to a heat
exchanger.
Fit HydroFLOW to the circulating water return to the heat exchanger:
- if the flow of make up water is low
- if the make up water pipe is short
- to avoid an electrical loop (see loops below).
DO use the unique protection zone to protect appliances supplied with
water that is not normally flowing.
DO consider signal propagation barriers when determining the size of the
seed generation zone. Such barriers include non-conducting valves, sand
filters, pumps and large tanks. In addition the protection zone is decreased
by complexities in the plumbing system. When protecting mixer valves,
showers, etc., that are supplied with hot water from a recirculating system,
install HydroFLOW on the recirculating water. If there is a large hot water
tank, chose the flow out of that tank.
DO ensure that HydroFLOW is protected from surfaces that may exceed 131F.
Use insulating material and choose a larger model if necessary.
DO remember that HydroFLOW descales and that after installation greater than
usual quantities of precipitate may be released.
PROTECTING REMOTE VALVES AND APPLICANCES
If these devices are supplied with hot water from a recirculating
system, HydroFLOW is best fitted to the hot water flow from the heat
exchanger or calorifier. If the remote devices are not supplied from a hot
water recirculating system, they are best treated using HydroFLOW fitted on
the cold water supply.
DO NOT install HydroFLOW inside an electrical loop. (See the 2 diagrams at
the foot of this page for a graphical explanation).
DO NOT locate HydroFLOW on the water supply into a cold water tank or sand
filter. The signal will be lost with little user benefit.
DO NOT think of HydroFLOW as a water softener. HydroFLOW treats the
temporary hardness salts and not the permanent hardness salts. These can
form scale when the water evaporates. A good quality water softener will
remove almost all salts but it needs maintenance, causes corrosion and
produces non-potable water.
DO NOT fit HydroFLOW before a pump or a large filter or large volumous
tanks.
DO NOT expect miracles. HydroFLOW does not always remove old scale and, in
particular, it is unlikely to descale a pipe through which the water has
almost stopped flowing.
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