Schell Dual flush User manual

Dual flush WC flush valve
IMPORTANT
The SCHELL Dual flush WC flush valve must be installed to the following
specifications:
• Requires a minimum of 133 mm wall cavity to finished wall and
a maximum of 178 mm.
• Inwall coverplate is suitable for a maximum wall thickness of 25 mm.
• Water supply:
Minimum delivery pipe size 25 mm with left or right connection to valve
body for 1 flush valve. For > 1 flush valve 32 mm supply pipe or according
to water service rule calculations and simultaneous demand requirements.
• Minimum flow: 1,3 litres/second at the valve
• Maximum static pressure may not exceed 800 KPA
• Recommended operating pressure: 200-500 KPA (Flow pressure)
Assembly and instructions
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1. 2. 3. 4.
Dual flush WC flush valve
Assembly and instructions
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5. 6. 7. 8.
9. 10. 11. 12.
13. 14. 15. 16.
17.
DRAIN
Important:
Make sure that
supplied lock
nut is fixed
tightly!
M
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Disturbance Possible reason Remedy Fig.
Flushing time too short Sleeve dried-up Water sleeve 16
Sleeve defective Change cartridge 8
Continuous flushing Piston seal or relief Change cartridge 8
valve defective
Amount of water Stop ring missing or Correct assembly 11+
too high or too low wrong assembled of stop ring 12
Flush too low Preliminary shutoff Open preliminary 6
not fully opened shutoff
Cartridge sieve dirty Rinse cartridge 16
Flush adjustment too low Adjust flush 13
Flow pressure too low Check flow pressure
(p < 12 metres head)
Flush too strong Flush adjustment too strong Regulate flush 13
Flow pressure too high
(p > 50 metres head) Reduce flow pressure
Figure 1 –Install Styrofoam blackout box with drip tray, mount tunnel, seal and
airbrake nut to supplied telescopic flush pipe.
Figure 2 –Install supplied stop cock to the water supply pipe.
Figure 3 –Install flush valve to stop cock (shut off valve). Tighten airbrake nut,
tunnel, and seal to the flush valve.
Figure 4 –Close the blacklout box with Styrofoam cover provided.
Figure 5 –Finish wall
Figure 6 –Mount hose to plastic connector at valve, open the stop cock and flush
valve clean of any debris and impurities in the supply pipe.
Figure 7 –Remove plastic hose connector from valve.
Figure 8 –Install cartridge.
Figure 9 –Cut back excess Styrofoam to finished wall.
Figure 10 –Cut and remove excess of drip tray depending on wall thickness.
Figure 11 –Circlip location will determine flush volume 6/3l or 9/4.4l.
Figure 12 –Locate circlip for desired flush volume.
Figure 13 –Adjust flush velocity.
Figure 14 –Mount cover plate mounting frame.
Figure 15 –Mount actuating threaded rod to desired length.
Securewith supplied lock nut tightly.
Figure 16 –Install cover plate and ensure that there is no slack between button and actuator rod.
Secure cover plate by tightening grub screw at base of cover plate with supplied allen
key.
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