Tricel Novo UK10, Technical Manual

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5.9 Risers
If a Tricel Novo requires a deeper than standard installation in order to align with the
wastewater outlet pipe from the dwelling, manhole risers are available to facilitate this and to
avoid the access hatch being positioned in a depression, as shown in the diagram:
Risers are available in the following sizes:
• 250mm (requires installation suitable for the site conditions)
• 500mm (requires a concrete backfill) *
• 750mm (requires a concrete backfill) *
* 500mm or 750mm risers cannot be retrofitted unless the correct installation is in place.
•
The Tricel Novo is suitable for a maximum manhole riser of 750mm which facilitates the
following maximum inlet inverts:
o
110mm Inlet: 1285mm
o
150mm Inlet: 1310mm
• The Tricel Novo is not suitable where a deeper installation is required.
Important:
•
Never place the access covers below ground level.
•
Only use Tricel manhole access covers.
•
Do not allow ground water or storm water to enter the Tricel Novo.