General And Safety Information; British Standards And Codes Of Practice; Health And Safety Regulations 1993 - andrews CWH30/200 Installation, Operation And Maintenance Manual

4 4 SECTION 1 • GENERAL AND SAFETY INFORMATION

GENERAL AND SAFETY INFORMATION

Th e Andrews Water Heater has been designed for use with NATURAL GAS OR LPG and is manufactured to give an effi cient,
reliable and long service life.
To ensure the continued, trouble-free operation of your heater at maximum effi ciency, it is essential that correct installation,
commissioning, operation and service procedures are carried out strictly in accordance with the instructions given in this
manual. By law, installation and commissioning of the heater must be carried out by properly qualifi ed personnel.
Th e heater(s) must be installed in accordance with the following requirements:
• Th e current GAS SAFETY (INSTALLATION AND USE) REGULATIONS
• Th e current BUILDING REGULATIONS
• Th e WATER SUPPLY (WATER FITTINGS) REGULATIONS
•
Additionally, installation should be performed in accordance with all relevant requirements of the Gas Supplier, Local
Authority and recommendations of the British Standards and Codes of Practice which should include the following:
• BS EN 806 (Parts 1 - 5) Specifi cations for installations inside buildings conveying water for human consumption.
General design, pipe sizing, installation, operation and maintenance.
• BS 5440-1 Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net. Specifi cation for
installation of gas appliances to chimneys and for maintenance of chimneys.
• BS 5440-2 Flueing and ventilation for gas appliances of rated input not exceeding 70 kW net. Specifi cation for the
installation and maintenance of ventilation provision of gas appliances.
• BS 5546 Specifi cation for installation of gas hot water supplies for domestic purposes. Using gas-rated appliances of
rated input not exceeding 70 kW net.
• BS 6891 Installation of low pressure gas pipework of up to 35mm in domestic premises.
• BS 6644 Installation of gas fi red water boilers of rated inputs between 70kW and 1.8MW
• BS EN 12897 Water supply. Specifi cation for indirectly heated unvented (closed) storage water heaters
• IGE/UP/1A, 1B Strength/tightness testing and direct purging
• IGE/UP/2 Installation pipework
• IGE/UP/10 - 1 (Edition 4): Installation of gas appliances in industrial and commercial premises.
Andrews Water Heaters accepts no liability for any damage resulting from failing to accurately follow the instructions.
When replacing parts during maintenance, only original parts from Andrews Water Heaters should be used; these can be
recognised by the name of the manufacturer printed on them.
HEALTH AND SAFETY REGULATIONS
It is the duty of manufacturers and suppliers of products for use at work to ensure, so far as is practicable, that such products
are safe and without risk to health when properly used, and to make available to users adequate information about their safe
and proper operation.
Andrews Water Heaters should only be used in the manner and purpose for which they are intended and in accordance with
the instructions in this manual. Although the heaters have been manufactured with paramount consideration to safety, certain
basic safety precautions highlighted in this manual must be observed by the user.
It is imperative that all users of the heaters must be provided with all the information and instruction necessary to ensure
correct and safe operation.
EFFECTIVENESS IN COMBATING LEGIONELLA
Water systems in buildings have been associated with outbreaks of Legionnaires' Disease, particularly in health care facilities
where occupants are signifi cantly more susceptible to infection.
In recognition of the risks in hospitals, a Code of Practice for the Control of Legionella in Health Care premises has been issued
by the Department of Health. Codes of Practice applicable to other premises have been published by other organisations,
principally the Health and Safety Executive and the Chartered Institute of Building Services Engineers (CIBSE).
All Codes of Practice draw attention to the design and operation of water systems with reference to avoidance of factors that
favour colonisation by Legionella bacteria. Th ese factors include stagnation, lukewarm conditions (20°C to 45°C) and the
accumulation of debris, scale and corrosion in the base of tanks and calorifi ers.
Th e MAXXfl o range has a Legionella fl ushing programme – see page 15 (terminals BTI – BT2)
MAXXfl o Water Heater