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General Requirements
IMPORTANT : PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE INSTALL-
ING THE MEGALIFE WATER HEATER. INCORRECT INSTALLATION MAY INVALIDATE
GUARANTEE.
THE MEGALIFE MUST BE INSTALLED BY A COMPETENT INSTALLER IN ACCORDANCE
WITH ALL RELEVANT REGUALTIONS AND CODES OF PRACTISE IN FORCE AT THE TIME
OF INSTALLATION.
THE MEGALIFE MUST BE FED FROM A COLD WATER FEED CISTERN. A SUITABLE VENT
PIPE MUST BE INSTALLED.
2.1 SITING THE MEGALIFE (see Diagram 1)
The MegaLife range of water heaters must only be installed as a CISTERN FED VENTED unit
supplied from a cold water feed cistern at an appropriate head height above the heater and outlet
points. Ensure that the feed cistern height above the heater does not exceed its maximum rated
pressure of 40 metres (4 bar). The feed cistern should comply with the requirements of Schedule 2
Section 7 Paragraph 16: Cold Water Services to the Water Supply (Water Fittings) Regulations
1999 (previously Water Byelaw 30).
A vent pipe MUST be connected to the outlet of the heater. This must rise continuously and be
arranged to discharge into the feed cistern. The vent pipe must have a minimum bore diameter of
19mm.
DO NOT connect directly to the mains water supply.
DO NOT connect any pressure relief device or other valves to the vent pipe of this heater.
DO NOT install in a position where the heater is liable to be subject to frost conditions.
The MegaLife unit must be vertically floor mounted or on a suitable plinth. It can be placed anywhere
convenient provided the vent pipe can be correctly installed. Ensure that the floor or supporting plinth
is of sufficient strength to support the "full" weight of the unit (refer to Tables 3 and 4 on page 21 for
unit weights). Ideally the heater should be sited close to the point where hot water is required most
frequently. Pipe runs should be kept as short as possible for maximum economy. Access to
associated plumbing connections, immersion heaters and indirect controls should be possible for
servicing and maintenance of the system.
2.2 OUTLET/TERMINAL FITTINGS (TAPS, ETC.)
The MegaLife can be used in conjunction with most types of terminal fittings. In a cistern fed system
the pressure at the outlet fittings is due to the head height of the cold water feed cistern above the
outlet point. When choosing suitable fittings ensure they will operate at the pressure available at the
outlet point.
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