Hydrotech 5600 SXT Valve Chem Free Iron Filter Operation Manual - Manual (Page 14)

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Special Instructions for Split-Stream and Public Water Supply Installations
For a split-stream installation, a secondary pressure tank must be installed as shown in the split-stream installation
diagram (Page 4). On a public water supply installation, a pressure tank must be installed as shown in the public water
supply installation diagram (Page 4). It is recommended in both applications to use a standard air-to-water pressure tank
with an air relief valve of a capacity that would normally be installed if the water system were a standard private well.
Also note that in both applications a normally closed solenoid valve is required. Follow the standard installation
instructions above with the following additions and modifications:
1. Install the pressure tank as indicated by the appropriate diagram.
2. Install a normally closed solenoid valve after the water meter and after a line split for untreated water (if there is one).
3. On both types of installation, install the Mazzei injector between the pressure tank (secondary pressure tank on split-
stream installations) and normally closed solenoid valve.
4. Install the pressure switch after the Mazzei injector and wire it to the solenoid valve (secondary pressure switch on
split-stream installations). Set high pressure on pressure switch (which controls opening and closing of the solenoid
valve) 2 to 3 psi lower than low pressure on primary pressure switch. EXAMPLE: If primary pressure switch is set at
40-60 psi, set the secondary pressure switch at 18 to 38 psi.
5. For public water supply installations, contact your local water department or plant operator and ask what the normal
low system pressure is . Set high pressure on pressure switch 2 to 3 psi lower than this figure.
NOTE: Failure to set the pressure switch as described above will not allow proper closing of the solenoid valve
during periods of low system pressure.
Plumbing System Clean-Up
The following procedures are guidelines only but have proven successful in most instances. Under no circumstances
should any procedure outlined below be followed if contrary to the appliance manufacturer's instructions. Should there
be any questions concerning the advisability of performing a procedure, it is strongly recommended the manufacturer's
authorized service outlet be consulted prior to performing the procedure.
The plumbing system and water using appliances that have been exposed, even for a short time, to iron-fouled water
need to be cleaned of the precipitated iron that has collected in them or iron bleed (staining) will continue to be a
problem.
Depending on the amount of iron in the water and the length of time the water system has been exposed to iron fouling,
select from the following procedures those that apply to the type of system and appliances that need to be cleaned to
assure iron-free water at all points of use.
Softener
It isn't uncommon that the softener was installed in an effort to remove ferrous (clear water) iron from the water supply.
Typically a softener will remove some ferrous iron until the resin bed becomes fouled to the extent that it will lose both
hardness removal capacity and the limited capacity for iron removal. This is the condition to expect the softener to be in
when planning a system clean-up.
Prior to closing the main supply valve or turning power off to a private well system and preparatory to installing the filter
system, do the following:
1. Disconnect the brine draw line from the brine cabinet and place the loose end into a five gallon plastic pail filled with
a solution of warm water and 4 oz. of resin mineral cleaner.
2. Advance the control timer to the brine draw position (refer to instructions provided with your softener). Allow all the
warm mineral cleaner solution to be drawn into the mineral bed.
3. Then immediately close the main water supply valve or turn the power off to the pump and proceed with the filter
installation. During the time required to install the filter system, the iron-fouled softener resin will be chemically
cleaned.
4. After the filter installation is completed and final adjustments have been made, with the water turned on and the
brine draw tube reconnected, reposition the timer on the softener to the backwash position. Allow the timer to
perform an automatic regeneration cycle. During backwash of the softener, all iron cleaned from the resin will be
washed down the drain. It is advisable, after chemically cleaning the softener, to regenerate the system twice to fully
restore capacity lost due to iron-fouling.