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Water Regulations and Byelaws
These regulations and byelaws ensure a good supply of wholesome water, and that only approved materials, pipes and
fittings are used to convey water.
Building Regulations
These are a statutory document and take priority over all other regulations and recommendations. The installation of an
unvented hot water system of over 15 litres is classified as a “Controlled Service and Regulation G3 applies. To meet the
requirements of the regulation, installation of an unvented system should be undertaken by a competent installer”.
All installations of unvented hot water storage systems having a capacity of more than 15 litres should be notified to the
relevant Local Authority by means of building notice or by the submission of full plans. It is important to note that it is a
criminal offence to install an unvented hot water storage system over 15 litres without notifying the Local Authority.
Delivery
The products are supplied with the following:
Unvented water heater (with factory-fitted T&P) x1
Pressure relief valve set at 6 bar x1
Dielectric junctions x2
Tundish x1
Expansion Vessel x1
Check Valve x1
Pressure reducing Valve x1
Important note: Dielectric junctions must be fitted to all models as they prevent an electrolytic reaction and safe
-
guard against potential aggressive corrosion.
If the supplied Dieletric Junctions are not tted this could void the warranty.
INSTALLATION NORMS (for the installer)
Before installing the heater read these instructions in full. If you are unsure please contact our technical service
department (03332407777).
The installation must comply with all relevant Water Regulations/Byelaws and Building Regulations.
The installer should check with the local water authority for conrmation of the maximum water supply pres
-
sure.
The appliance should be left packed until it is ready to be installed. When unpacking take care not to damage the
temperature and pressure relief valve on the top of the heater.
A drain has to be provided for any water discharged through the safety valves.
A cold water supply pressure between 1 and 3.5 bar is required (if the mains pressure is above 3.5 bar a pressure reduc
-
ing valve must be installed). Please note that turning down the stop-cock will reduce ow not pressure.
The outlet pressure from the reducing valve (if supplied) is 3.5 bar.
A 240 VAC; 3 kW single phase electrical supply is required.
This product is a device that must be installed vertically in order to operate correctly. Once installation is com
-
plete, and before any water is added or the power supply is connected, use a measuring instrument (i.e. a spirit
level) to check that the device has been installed perfectly vertical. The appliance heats water to a temperature
below boiling point. It must be linked up to a mains water supply according to the appliance performance levels and
capacity. Before connecting the appliance, it is rst necessary to:
- Check whether the characteristics (please refer to the data plate) meet the customers requirements.
- Make sure the installation conforms to the IP degree (of protection against the penetration of liquids) of the appli-
ance according to the applicable norms in force.
- Read the instructions provided on the packaging label and on the appliance data plate.
This appliance was designed to be installed only inside buildings in compliance with the applicable norms in force.
Furthermore, installers are requested to keep to the following advice in the presence of:
- Damp: do not install the appliance in closed (unventilated) and damp rooms.
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  • How to adjust the temp as it keeps returning to full temp Submitted on 13-8-2022 at 11:02

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