Zip FlushMaster Pearl Installation & Maintenance Instructions - 82902 - January 2012 v1.00
Page 5 of 12
Set Up Water Discharge
Continued
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.
Note: To adjust the auto syphon height within the cistern, add a second
locking nut to the inside of the cistern and wind 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.
Fit the air break to the top of the urinal sparge pipe (in place of a cistern), as
shown in the diagram.
Do not use sealing tape in the joints. Both the air break and the latching
valve use compression connections fittings. Sealing tape is not required.
Supply and install a half-inch pipe from the top of the air break, to the outlet
side of the latching valve.
Securely fix the piping to the wall as per AS/NZS3500 to prevent possible
tampering and vandalism.
Adjust the timing of the flush to ensure an adequate flush, by setting the
flush cycle switches on the sensor (see page 9).
Restrictor installation:
Fit the Restrictaflow between the tap and the latching valve (see below). The
Restrictaflow must be connected to the valve port
marked IN.
Latching valve
IN
OUT
Water level
Auto syphon
Outlet hole
Sparge pipe
Overflow pipe
Air gap
Latching valve
Air break fitting
Sparge pipe
Must be vertical
Water Flow
water flow
water flow
Restrictaflow
outlet to airbreak
Flow
From stop valve
NOTE:
The valve must be in-
stalled with the INLET and OUTLET
ports oriented with the water fl ow
(as shown above). The valve body
is marked IN and OUT. Incorrect
assembly will result in damage to
the diaphragm.
