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• To eliminate pipe debris it is essential that water supply pipes must be flushed prior to
connecting the digital mixing valve to the system so debris cannot enter the digital mixing
valve internals.
• Fully commission the product after installation taking care to look for any leaks and correct
operation.
For pumped product, follow commissioning instructions.
• The use of supply-line or zone strainers will reduce the need to remove debris at the
digital mixing valve. The recommended maximum mesh aperture dimension for such
strainers is 0.5mm.
• Pipework must be rigidly supported and routed such that it does not cause any strain
on the connectors.
• Long outlet pipework (dead-legs) should be kept to a minimum to avoid temperature
fluctuations.
• Cables routed through wall cavities, chased into solid walls, directed under baths or in
loft spaces must be fitted in such a way that they can later be removed. To facilitate this
appropriate cable conduit/trunking must be used at all times. The conduit/trunking must
be at least 20mm diameter/square to allow for the safe removal of the connectors. Failure
to do so may result in an inability to carry out any maintenance or servicing. Safe and
easy access to the product should be available at all times.
• The product has integral check valves for the purpose of backflow prevention. These can
be replaced if required by following the instructions at the end of this guide.
• Warning! Ensure use of correct pipe types and sizes. Use of different pipe sizes
may cause leaks. See page 15.
Installation: Digital Mixing Valve
Caution! The digital mixing valve (which contains the thermostatic mixing valve)
must be orientated in the positions shown below. Failure to do so will compromise
the ability of the unit to fail-safe and deliver constant blend.
1
The digital mixing valve may be installed in a loft space, under the bath or in a convenient
cupboard space, provided there is enough room for maintenance (e.g. removal of digital
mixing valve lid and removal of the inlet pipework to access the inlet filters). Failure
to do so may result in an inability to carry out any maintenance.
Mounting on a
horizontal surface
Mounting on a vertical surface
22
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