Dimplex System 18 Installation And Servicing Instructions page 11

6 6 . . 0 0 S S Y Y S S T T E E M M D D E E T T A A I I L L S S
6 6 . . 1 1 I I N N F F O O R R M M A A T T I I O O N N
1. The Dimplex System Boiler is a 'Water Byelaws Scheme -
Approved Product'. Reference to the Water Research Council
publications, 'Water fittings and materials directory' and 'Water
supply byelaws guide' give full details of byelaws and the IRNs.
6 6 . . 2 2 H H E E A A T T I I N N G G C C I I R R C C U U I I T T
1. The appliance is suitable for fully pumped SEALED SYSTEMS
ONLY.
Treatment of Water Circulating Systems
Failure to flush and add inhibitor to the system will
invalidate the appliance warranty.
• Central heating 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 X300 and Fernox-Copal which should
be used following the inhibitor manufacturer's instructions.
• 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 - Tel: 0844 3711121.
• If thermostatic radiator valves are fitted, a radiator must be
fitted with two lock shield valves or the system must include a
proprietary automatic bypass valve, to enable correct operation
of the pump over-run facility.
6 6 . . 3 3 S S Y Y S S T T E E M M C C O O N N T T R R O O L L
1. It is recommended that external controls e.g. room
thermostat are fitted to further improve the operating
efficiency of the boiler and system.
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© Dimplex Boilers 2008