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2 INSTALLATION
2.1 General Requirements.
The product must be installed only by a competent person and in accordance with all
manufacturer’s instructions contained herein, and all current legislation, regulations,
standards, codes and by-laws applicable to the territory of installation.
The product must be installed vertically (not on its side) and in a frost-free, interior location.
Ensure adequate clearances and access around the product for the purposes of installation,
service and maintenance. The installation location must not prevent component parts being
removed for the purposes of service or replacement.
The appliance must be installed on a floor area that is level and capable of supporting the
product when it is full of water. See Figure 1 and associated table for details of product
weights.
Connection to the product is via compression fittings only (not supplied).
It is recommended that the flow and return pipework connected to the product is fitted with
isolation valves, e.g., quarter-turn ball valves (not supplied), for easier maintenance.
The heating system to which the product is fitted must be installed to current HVAC codes of
practice. Before installing the product to a new or existing heating system, the system must
be thoroughly flushed to clear all deposits or other foreign matter such as solder, steel wool
and copper filings. The heating system must be cleansed, flushed, neutralised and protected
from corrosion in accordance with BS12828, BS12831, BS14336 and BS7593 using suitable
cleansing agent(s) and inhibitor(s) and carried out in accordance with the cleanser/inhibitor
manufacturers’ instructions.
The heating system must be dosed with corrosion inhibitor to the concentration specified by
the inhibitor manufacturer and in consideration of the total volume of the heating system
including all components, pipework, appliances, expansion capacity and this product.
Inhibitor concentration within the heating system must be monitored and maintained as part
of the annual service of the heating system, or upon any occasion when water is lost from
and restored to the heating system. Failure of this product or its components due to corrosion
or the presence of corrosion deposits within the heating system will not be covered by the
related product guarantee.
Heating system pressures must not exceed the maximum permitted. See Figure 1 and
associated table for details. The heating system must incorporate appropriately rated
pressure relief valve(s).
Ensure that the volume of the buffer tank is appropriate to the intended heating system
requirements and performances. Buffer tank capacity must be calculated by a competent
person using recognised principles and sizing formulae.
When sizing the heating system expansion vessel, the storage volume of the buffer tank must
be taken into consideration.
