Site Requirements; Codes Of Practice - Baxi 35/80 IE Installation & Servicing Instructions Manual

1. The pressure relief valve is set at 3 bar, therefore all pipework, fittings, etc. should be
suitable for pressures in excess of 3 bar.
2. The pressure relief discharge pipe should be not less than 1/2" dia, run continuously
downward, and discharge outside the building, preferably over a drain. It should be routed in
such a manner that no hazard occurs to occupants or causes damage to wiring or electrical
components. The end of the pipe should terminate facing down and towards the wall.
3. The discharge must not be above a window, entrance or other public access.
Consideration must be given to the possibility that boiling water/steam could discharge from
the pipe.
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7.0 Site Requirements

7.1 Information
The installation must be carried out by a Competent Person and installed in accordance with
the current edition of I.S. 813 "Domestic Gas Installations", the current Building Regulations
and reference should be made to the current ETCI Rules for Electrical Installation.

7.2 Codes of Practice

Standard Scope
I.S. 813 Domestic Gas Installations.
BS 5546 Installation of hot water supplies for domestic purposes.
BS 5449 Part 1 Forced circulation hot water systems.
BS 7074 Expansion vessels and ancillary equipment for sealed water systems.
BS 7593 Treatment of water in domestic hot water central heating systems.
WARNING - The addition of anything that may interfere with the normal operation
of the appliance without the express written permission from the manufacturer or his
agent could invalidate the appliance warranty.
7.3 Clearances (Figs. 5 & 6)