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Warnings
10. Hydraulic connection
Installing a secondary circulation loop on the appliance is prohibited. If the appliance
fails on an installation with looping, the warranty does not apply. For more information,
please contact the after-sales service.
The highest hot or cold water draw off point should not exceed 10 metres above the Pressure
Reducing Valve.
An ascending spray type bidet or any other appliance with a Class 1 back-syphonage risk requiring
a type A air gap should not be used.
If the supply to the mixer fittings (other than a dual outlet type) is not taken from the balanced supply
the system will become over pressurized and cause the pressure relief valve to discharge. Over time
this could also cause the premature failure of the appliance itself which will not be covered by the
warranty
In larger properties with a number of bathrooms/en-suites and long pipe runs we would recommend
that the balance cold supply is provided with its own pressure reducing valve and is not taken from
the balanced cold connection on the combination valve. In this case it will also be necessary to fit
a small expansion vessel on the balanced cold water system to accommodate the pressure rise
caused by the increase in temperature of the balanced cold water.
Check the performance requirements of the terminal fittings with regard to flow/ pressure are suitable.
In relation to potable water systems, expansion vessels shall be installed in a vertical orientation and
located so that the length of the connecting pipe work is kept to a minimum.
Aerated taps are recommended to prevent splashing.
Any type of shower mixing valve can be used as long as both the hot and cold supplies are mains fed.
However, all mains pressure systems are subject to dynamic changes particularly when other hot
and cold taps/showers are opened and closed, which will cause changes in the water temperature
at mixed water outlets such as showers. For this reason and because these are now no more
expensive than a manual shower we strongly recommend the use of thermostatic showers with this
appliance. These must be used in 3 storey properties where the impact on pressure/temperature of
opening another tap in the system is greater than normal. The shower head provided must also be
suitable for mains pressure supplies.
The cold water inlet is marked with a blue collar and the hot water outlet is marked with a red collar.
The cold water inlet and the hot water outlet are provided with 22mm compression fittings.
Plastic Pipework
This appliance is suitable for use with plastic pipework as long as the material is recommended for
the purpose by the manufacturer and is installed fully in accordance with their recommendations.
10.1. Cold water connection
Before connecting the hydraulics, check that the mains pipes are clean.
Inlet control group 3 bar pressure reducing valve and 4.5 bar expansion relief valve. Also an
expansion vessel must be fitted.
Description
Installation
Maintenance
19
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