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6.0 System Details
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© Baxi Heating UK Ltd 2011
6.1 Water Circulating Systems
1. The boiler is suitable for use with open vent fully
pumped systems and sealed systems .
The following conditions should be observed on all
systems:
•The static head must not exceed 30m of water.
•The boiler must not be used with a direct cylinder.
•Drain cocks should be fitted to all system low points.
•All gas and water pipes and electrical wiring must be
installed in a way which would not restrict the servicing
of the boiler.
•Position isolating valves as close to circulating pump as
possible.
6.2 Treatment of Water Circulating
Systems
1. All recirculatory water systems will be subject to
corrosion unless they are flushed and an appropriate
water treatment is applied. To prevent this, follow the
guidelines given in BS 7593 “Treatment of Water in
Domestic Hot Water Central Heating Systems” and the
treatment manufacturers instructions.
2. Treatment must involve the use of a proprietary
cleanser, such as Sentinel X300 or X400, or Fernox F3
and an inhibitor such as Sentinel X100 or Fernox MB-1.
3. Full instructions are supplied with the products, for
further information contact Sentinel (0800 389 4670) or
Fernox (0870 870 0362).
Failure to flush and add inhibitor to the system will
invalidate the appliance warranty.
4. It is important to check the inhibitor concentration after
installation, system modification and at every service in
accordance with the inhibitor manufacturer’s instructions.
(Test kits are available from inhibitor stockists.)
5. For information or advice regarding any of the above
contact Technical Enquiries 0844 871 1555.