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3. GENERAL REQUIREMENTS
3.1. The D Series domestic hot water cylinder MUST be installed
by a competent person in accordance with section G3 of the
current Building Regulations.
3.2. Important
It is important that the installer reads and understands these
instructions and unpacks and familiarises themselves with the
equipment before commencing the installation. Failure to observe
these installation instructions could invalidate the warranty.
3.3. Water supply
The water supply to the cylinder should be potable water direct from
a public mains water supply with any water treatment equipment
functioning correctly.
For optimum performance the unit should be fed via a 15 mm or
22 mm diameter supply pipe direct from the mains water entry
point to the property with supplies a maximum pressure of 0.9
MPa. The unit can operate with a minimum supply pressure of 0.15
MPa and a flow rate of at least 20 litres per minute, but flow from
the outlets will be low if several outlets are used simultaneously.
The cylinder control equipment is factory set to limit the system
operating pressure to 0.3 MPa. The maximum supply pressure
into the pressure-reducing valve is 0.9 MPa.
3.4. Taps and fittings
All taps and fittings incorporated in the unvented system should
have a rated operating pressure of 0.7 MPa or above.
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