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Dualflush operation
How the dualflush operation for this siphon works:
The full flush volume is achieved by flushing the WC in the normal fashion of fully
depressing the lever and immediately releasing once the flush has started.
The short flush volume is achieved by fully depressing the handle in the normal fashion and
holding the handle in the down position until the flushing cycle has finished.
Dualflush Label
High Level Cisterns:
To appear on or near the lower
edge of the front of the cistern shell.
Low Level and Close Coupled Cisterns:
To appear on
the upper half of the front of the cistern shell.
Internal Overflow
If in the unlikely event that your filling valve fails open, all Opella siphons feature an
internal overflow which will be able to cope with upto 35l/min of excess water.
As the water level rises so will the level of water within the siphon, until it reaches the
‘spillover’ point. At this point the water within the syphon will cascade down the down tube
and into the pan preventing any further increase in the height of the water within in the
cistern.
When choosing an Opella syphon please make sure the bottom of the coloured cap (the
‘Spillover’ point, point P) is lower then any existing exit point within the cistern, i.e lever
handle / side lever / side inlet internal overflow and cistern rim.
features
•
fitting instructions
LF00145
Delchem
®
Dualflush
siphon
Opella Limited
Twyford Road, Rotherwas Industrial Estate, HEREFORD HR2 6JR, England.
t:
+44 (0) 1432 357331
f:
+44 (0) 1432 264014
w:
www.opella.co.uk
e:
•
Variable flushing volumes
•
Facilitates internal overflow
•
1
1
/
2
”
BSP outlet
Opella Dual Flush Siphon
Full Flush:
Depress and let go.
Short Flush: Depress and hold till
flush has completed.
External
overflow
Water line
Siphon
Siphon
'Spillover'
