General Requirements - Heatrae Sadia MegaFlo Installation Manual

General Requirements

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IMPORTANT : PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE INSTALLING
THE MEGAFLO WATER HEATER. INCORRECT INSTALLATION MAY INVALIDATE GUARANTEE.
THIS APPLIANCE IS NOT INTENDED FOR USE BY PERSONS (INCLUDING CHILDREN) WITH
REDUCED PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK OF KNOWLEDGE
AND EXPERIENCE, UNLESS THEY HAVE BEEN GIVEN SUPERVISION OR INSTRUCTION
CONCERNING THE USE OF THE APPLIANCE BY A PERSON RESPONSIBLE FOR THEIR SAFETY.
THE MEGAFLO MUST BE INSTALLED (SECTIONS 2 - 5), COMMISSIONED (SECTION 6)
AND MAINTAINED (SECTIONS 8 - 10) BY A COMPETENT INSTALLER IN ACCORDANCE
WITH BUILDING REGULATION G3 (ENGLAND AND WALES), TECHNICAL STANDARD P3
(SCOTLAND) OR BUILDING REGULATION P5 (NORTHERN IRELAND) AND THE WATER FITTING
REGULATIONS (ENGLAND AND WALES) OR WATER BYELAWS (SCOTLAND). FOLLOWING
INSTALLATION AND COMMISSIONING, THE OPERATION OF THE HEATER SHOULD BE
EXPLAINED TO THE USER (SECTION 7) AND THESE INSTRUCTIONS LEFT WITH THEM FOR
FUTURE REFERENCE.
2.1 COMPONENT CHECK LIST 2.1 COMPONENT CHECK LIST
Before commencing installation check that all the components for your Megafl o unit are con-
tained in the package. The following components are supplied as standard with your Megafl o
unit :
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2.2 SITING THE MEGAFLO (see Figure 1) 2.2 SITING THE MEGAFLO (see Figure 1)
The Megafl o unit must be vertically fl oor mounted. It can be placed anywhere convenient
provided the discharge pipe(s) from its safety valves can be correctly installed. Areas that are
subject to freezing must be avoided. Ensure that the fl oor is of suffi cient strength to support
the "full" weight of the unit (refer to Tables 4 and 5 on page 33 for unit weights). Pipe runs
should be kept as short as possible for maximum economy. Access to associated controls,
immersion heaters and indirect controls should be possible for servicing and maintenance of
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Factory fi tted immersion heater (s) and thermal controls
Cold Water Combination Valve (comprises Isolating Valve, Pressure Reducing Valve,
Strainer, and Check Valve)
Expansion Core Unit (comprises Check Valve and Expansion Valve)
Factory fi tted Temperature/Pressure Relief Valve (set at 90
Tundish (included in Cold Water Combination Valve pack)
Factory fi tted Indirect Thermostat and Thermal Cut-out (CL units only)
T&P Relief Valve Insulation Set
Drain Valve
Wiring Centre (CL units only)
2-Port Motorised Valve (CL units only)
Lifting handle
C/1 Mpa (10bar))
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