Install the booster pump and venturi according to Figure 2. The maximum supply water flow into the
feeder is 1.5 gpm. The venturi must be sized to extract a minimum of 1.5 gpm at all times. The
feeder will modulate the effluent water flow to control water level in the feeder.
The booster pump should be interlocked with the pools main circulation pump to ensure that the
booster pump will not operate when the circulation pump is off. For additional protection against
overfeeding, the isolation valves should be closed when the system is turned off.
An eduction system must be installed that can remove 1.5 gpm from the feeder in order to allow the
feeder to operate at its maximum output. A Vantage Eductor model 3144 (P2001207) along with a
Vantage Check Valve (P2001208) can be installed with a booster pump (P2001209) to provide the
necessary suction. In most installations, this combination of parts will provide the necessary suction
whenever the return line pressure is less than 19 psi. For specific booster pump and eductor per-
formance information contact your local Vantage Distributor.
For best performance, the injector should be installed so that it is in a straight run of pipe with a run
of 10 pipe diameters before and after the injector. On a 1.5” diameter injector, this means that a
length of pipe should be run for 15 inches after the injector prior to installing an elbow. Be sure to
install valves on the injection system for simplified repair and maintenance. Follow all installation
and operating instructions provided by the manufacturer of the pump and injector.
VENTURI WITHOUT BOOSTER PUMP
(see Figure 3)
While the venturi with booster pump sidestream is the preferred installation method, it may be desir-
able in some applications to install the venturi without the use of a booster pump. The sidestream is
created by using the pressure differential created across the pools filter and heater. The sidestream
inlet is installed after the pools circulation pump but before the filter while the sidestream effluent is
returned after the heater. The sidestream flow and venturi must be selected to remove a minimum
of 1.5 gpm from the feeder at all times. When using this installation method, make all the connec-
tions to the ACF-18 as described in the venturi with booster pump installation.
CONNECT THE FEEDER OVERFLOW
The ACF-18 contains an overflow port in both the tablet hopper and the solution chamber. The over-
flow in the tablet hopper directs water from the tablet hopper to the solution tube below the tablet
sieve plate and the solution chamber below. The 1” white fitting on the end of the solution tank is the
solution tank overflow. It will prevent water from overfilling the solution tank in the event of a high
level shutoff failure. Proper installation requires that an unobstructed 1” drain line be installed from
the solution tank overflow (see figure 1) to a floor drain, backwash pit, surge pit, or other suitable
location. Some local regulations may require the neutralization of chlorinated water prior to dis-
charge into a sanitary sewer.
FEEDER WATER SUPPLY
The water supply to the ACF-18 should be filtered and unheated water. The in-line strainer should
be used to prevent debris from entering the feeder and potentially fouling the flowmeter, solenoid
valves, mining nozzles and other small openings in the feeder.
In cases where there is insufficient pressure (10 psi minimum is required) to operate the feeder, sup-
ply water can be taken from between the pump and the filter. Be sure to use the supplied strainer.
The strainer must be kept clean at all times in order to provide enough water flow and pressure to
operate the feeder.
An alternative installation method utilizing a potable water source for the feeder supply water can be
used. When using a potable water source for the feeder supply water, a pressure regulator should
be used to maintain an inlet pressure of 30 psi in addition to the in-line strainer. A backflow preven-
tion device may also be required by local regulations when using potable water. It is recommended
that a backflow prevention device be used on all installations where city water is used.
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