87100 v1.12 09.22 FlushMaster Page 5 of 12
Latching valve (solenoid)
Turn off the mains water supply. An isolating valve must be
supplied and installed in accordance with AS/NZS3500.
Position the latching valve as near to the cistern as possible,
and preferably upright, as shown in the diagram.
Cut the supply pipe and purge any debris or swarf.
Fit the latching valve (15mm OD), ensuring correct flow
direction.
Restrictor installation
The Restrictaflow is designed to save water and to reduce the
flow, particularly when used on single stall installations. The
Restrictaflow is normally required with operating pressures
greater than 700kPa.
Fit the Restrictaflow between the isolating valve and the
latching valve.
The Restrictaflow may be drilled out (in 0.5mm increments)
or removed, when servicing multiple stalls and a higher flow
is required, or when there is insufficient water pressure.
Autosyphon Installation
• More than one cistern can be fed from a single latching
valve, but for accurate balancing, do not connect together
more than two cisterns.
• The balance of water can be achieved by keeping the
supply pipe length to each cistern as equal in length as
possible.
• If this is not practical, fit a flow restrictor of equal rating at
the entry to each cistern.
• Remove the existing filling mechanism from the cistern,
including the float and aspirin washer, to permit
unrestricted inlet of the water. The flow of water into the
cistern is controlled by the latching valve.
• Remove the existing manual flushing mechanism from the
cistern, and fit the syphon to the outlet hole as shown in
the diagram. Connect the sparge pipe to the protruding
thread from the syphon.
• To adjust the auto syphon height within the cistern, add
a second locking nut to the inside of the cistern and wind
the second nut up or down.
• Adjust the height of the syphon so that the flush
triggering level remains below the level of the cistern
overflow pipe.
• An air gap must always remain between the cistern water
level and the inlet water pipe level, to prevent backflow.
Airbreak Installation
• The air break must be fitted in a vertical position. Fitting in
a position other than vertical will result in leakage.
Latching
valve
INOUT Water
Flow
Installation
Water level
Auto
syphon
Outlet
hole
Sparge
pipe
Overflow
pipe
Air gap
water
flow
Restrictaflow
(if required)
Latching
valve
Latching
valve
Air break
fitting
Sparge
pipe
Must be
vertical
water
flow
Restrictaflow
(if required)
