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Outlet / Terminal Fittings (Taps, Etc.)
The MEGAFLO Eco Solar can be used in conjunction with most types of terminal fittings. It is advantageous in many mixer showers to have
balanced hot and cold water supplies, in these instances the balanced cold water supply should be teed off the supply to the MEGAFLO Eco Solar
immediately after the Cold Water Combination Valve (See Figure 7 p.14). Branches to cold drinking outlets should be taken before the valve.
Outlets situated higher than the MEGAFLO Eco Solar unit will give outlet pressures lower than that at the heater, a 10m height difference will result
in a 0.1 Mpa (1 bar) pressure reduction at the outlet fitting.
NOTE: Accessories should have a rated operating pressure of at least 0.8 MPa (8 bar).
Limitations
The MEGAFLO Eco Solar unvented water heater should not be used in any of the following instances:
• Solid fuel boilers or any other boiler in which the energy input is not under effective thermostatic control unless additional and appropriate safety
measures are installed.
• Gravity circulation primaries.
• Steam heating plant unless additional and appropriate safety devices are installed.
• Ascending spray type bidets or any other Class 5 back syphonage risk requiring that a Type AA, AB, AD or AG air gap be employed.
• Water supplies that have either inadequate pressure or where the supply may be intermittent.
• Situations where it is not possible to safely pipe away any discharge from the safety valves.
• Areas where the water consistently contains a high proportion of solids, eg. suspended matter that could block the strainer, unless adequate
filtration can be ensured.
• The installation must be carried out in accordance with the relevant requirements of:
• The appropriate Building Regulations: either The Building Regulations (England), The Building Regulations (Scotland) or Building Regulations
(Northern Ireland).
• The Water Fittings Regulations (England and Wales) or Water Byelaws (Scotland).
Water Supply
Bear in mind that the mains water supply to the property will be supplying both the hot and cold water requirements simultaneously. It is
recommended that the maximum water demand be assessed and the water supply checked to ensure this demand can be met.
NOTE: A high mains water pressure will not always guarantee high flow rates.
Wherever possible the main supply pipe should be in 22mm. The minimum mains water supply requirements should be 0.15 MPa (1.5 bar) working
pressure and 20 litres per minute flowrate.
At these values outlet flowrates may be poor if several outlets are used simultaneously, the higher the available pressure and flowrate the better the
system performance will be.
The MEGAFLO Eco Solar has an operating pressure of 3 bar which is controlled by the 3 Bar Pressure Reducing Valve. The 3 Bar Pressure Reducing
Valve can be connected to a maximum mains supply pressure of 1.6 MPa (16 bar). The water supply must be of wholesome water quality (Fluid
Category 1 as defined by the Water Supply Regulations 1999).
The MEGAFLO Eco is to be used for the storage of wholesome water (max. 250mg/l chloride).
Electrical Supply
WARNING: THIS APPLIANCE MUST BE EARTHED. IT IS SUITABLE FOR A.C. SUPPLY ONLY. ELECTRICAL INSTALLATION MUST BE CARRIED
OUT BY A COMPETENT ELECTRICIAN AND BE IN ACCORDANCE WITH THE LATEST I.E.E. WIRING REGULATIONS.
ENSURE THE ELECTRICAL SUPPLY IS SWITCHED OFF BEFORE MAKING ANY CONNECTIONS TO THE MEGAFLO Eco SOLAR
The Environment
This product is made from many recyclable materials, therefore at the end of its useful life it should be disposed of at a Local Authority Recycling
Centre in order to realise the full environmental benefits. Insulation is by means of an approved HCFC/CFC free polyurethane foam.
Unvented Hot Water Cylinder
6
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