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6.0 System Details
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© Baxi Heating UK Ltd 2009
6.1 Information
1. The Potterton Performa 24 Eco HE Condensing Combination
Boiler is ‘Water Byelaws Scheme - Approved Products’.
To comply with the Water Byelaws your attention is drawn to the
following installation requirements and notes (IRN).
a) IRN 001 - See text of entry for installation
requirements and notes.
b) IRN 302 - Byelaw 14.
2. Reference to the WRc publications, ‘Water fittings and materials
directory’ and ‘Water supply byelaws guide’ give full details of
byelaws and the IRNs.
6.2 Central Heating Circuit
1. The appliance is suitable for fully pumped SEALED SYSTEMS
ONLY.
Treatment of Water Circulating Systems
• All recirculatory water systems will be subject to
corrosion unless an appropriate water treatment is
applied. This means that the efficiency of the system will
deteriorate as corrosion sludge accumulates within the system,
risking damage to pump and valves, boiler noise and circulation
problems.
• When fitting new systems flux will be evident within the system,
which can lead to damage of system components.
• All systems must be thoroughly drained and flushed out. Using,
for example Betz-Dearborn Sentinel X300 or X400 or Fernox
Superfloc Universal Cleanser. They should be used following the
flushing agent manufacturer’s instructions.
• System additives - corrosion inhibitors and flushing
agents/descalers should comply to BS7593 requirements, e.g. Betz-
Dearborn Sentinel X100 and Fernox-Copal which should be used
following the inhibitor manufacturer’s instructions.
Failure to flush and add inhibitor to the system will invalidate
the appliance warranty.
• It is important to check the inhibitor concentration after
installation, system modification and at every service in accordance
with the manufacturer’s instructions. (Test kits are available from
inhibitor stockists.)
• For information or advice regarding any of the above contact
Technical Enquiries.
6.3 Bypass
1. The boiler is fitted with an automatic integral bypass.
6.4 System Control
1. The boiler is designed for use in a heating system that
incorporates external controls, i.e. a minimum of a timer
device.
2. Suitable timer kits are available as optional extras.
3. For optimum operating conditions and maximum economy
the fitting of a programmable room thermostat is
recommended.