Related Manuals for Heatrae Sadia Megaflo Eco 70i
Summary of Contents for Heatrae Sadia Megaflo Eco 70i
- Page 1 Megaflo Eco Unvented Direct & Indirect Hot Water Cylinders Important Please read & understand all these instructions before commencing installation. Please leave this manual with the customer for future reference...
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Page 2: Table Of Contents
Contents 11. Decommissioning 11.1 Decommissioning procedure 1. Introduction 12. Spare parts 1.1 General 12.1 Spare parts list 1.2 Symbols used Benchmark checklist 1.3 Abbreviations 1.4 Liabilities Commissioning & service records 2. Safety Guarantee 2.1 General safety warnings 2.2 Recommendations 2.3 Specific safety instructions 3. -
Page 3: Introduction
In the interest of UK customers, we are continuously 1. Introduction endeavouring to make improvements in product quality. All the specifications stated in this document 1.1 General are therefore subject to change without notice. The following instructions are offered as a guide to the Our liability as the manufacturer may not be invoked in user and installer. -
Page 4: Safety
- Water may drip from the discharge pipe of the pressure-relief device and this pipe must WARNING be left open to the atmosphere; (see page 18 for more details) When handling the unit, take appropriate -the pressure-relief device is to be operated precautions for the weight of the unit. -
Page 5: Technical Specifications
3. Technical specifications Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Immersion heat up times (Top immersion, 3 kW) Immersion heat up times (Both immersions, 6kW) Coil surface area (m²) 0.58 0.58 0.72 0.79 0.79 0.79 0.79 0.79 0.79 0.79... - Page 6 Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Immersion heat up times (Top immersion, 3 kW) Immersion heat up times (Both immersions, 6kW) Heat loss (kW/24hrs) 0.91 1.05 1.18 1.20 1.42 1.61 1.69 Hot water capacity (volume to >40°C) Weight empty (kg) Weight full (kg) ¹...
- Page 7 Outer casing White pre-coated corrosion protected steel body shell. Polypropylene top and base mouldings. ABS electrical controls housings and enclosures. Water container Duplex stainless steel. 100% pressure tested to 1.6MPa (16 bar) Connections Stainless steel grade 1.4404 (316 L) Pipe connections accept 22mm outside diameter pipe (compression nuts and olives supplied).
- Page 8 Ø 579 T&P VALVE 30° 45° * ONLY ON DDD AND DDDD MODELS Figure 1: General dimensions - Direct models Size DIMENSIONS (mm) Size DIMENSIONS (mm) 125DD 1102 125i 1102 145DD 1229 145i 1229 170DD 1020 1384 170i 1020 1384 210DD 1095 1486 210i...
- Page 9 Ø 579 T&P VALVE 30° 27° 47° 45° Figure 2: General dimensions - Indirect models BALANCED COLD WATER 3 BAR PRESSURE CONNECTION (IF REQUIRED) REDUCING VALVE TO HOT OUTLET STOP COCK (IF USED IN THIS POSITION) MAINS WATER SUPPLY SECONDARY RETURN 8 BAR PRESSURE RELIEF VALVE TAPPING (IF REQUIRED, INDIRECT CYLINDERS...
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Page 10: Description Of The Product
4.5 Storage and Handling 4. Description of the product If the unit is to be stored before installation it must be 4.1 General description placed upright on a secure, level surface and be in a dry, frost free environment. The support surface must This product is a purpose designed unvented water be capable of supporting the packaged weight of the heater. - Page 11 Figure 4: Typical system installation schematic (not to scale)
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Page 12: Before Installation
Ascending spray type bidets or any other class 1 5. Before installation back syphonage risk requiring that a type A air gap be employed. 5.1 Installation regulations Steam heating plants unless additional and appropriate safety devices are installed. Situations where maintenance is likely to be WARNING neglected or safety devices tampered with. -
Page 13: Installation
6.2 Water connections 6. Installation 6.1 General WARNING After reading the previous sections in this booklet and Under no circumstances should the choosing a good location for the unit please install, factory fitted temperature/pressure paying attention to the following hydraulic, electrical and commissioning sections. - Page 14 The cold water control pack can be connected All connections accept 22mm outside diameter anywhere on the cold water cylinder supply. pipe (compression nuts and olives supplied). The The control pack incorporates the strainer, check thread rate is 3/4" BSP Male parallel to accept valve, core unit and expansion relief valve.
- Page 15 Secondary circulation To Hot Outlets Cold Water If secondary circulation is required it is recommended Inlet that it be connected to the cylinder as shown (see figs. 9 and 9b). Check Valve The secondary return pipe should be in 28mm pipe and incorporate a check valve to prevent backflow.
- Page 16 Discharge Note: To comply with the Water Supply (Water Fittings) It is a requirement of Building Regulation G3 that any Regulations, the tundish should incorporate a suitable discharge from an unvented system is conveyed to air gap. where it is visible, but will not cause danger to persons in or about the building.
- Page 17 (c) if plastic pipes are used as branch pipes carrying Worked example of discharge pipe sizing discharge from a safety device they should be either polybutylene (PB) to Class S of BS 7291-2:2006 or Fig. 11: shows a G1/2 temperature relief valve with a cross linked polyethylene (PE-X) to Class S of BS discharge pipe (D2) having 4 No.
- Page 18 Maximum Resistance Minimum Size Of Minimum Size Of Resistance Valve Allowed, Expressed As A Discharge Pipe Discharge Pipe D2 Created By Each Outlet Size Length Of Straight Pipe From Tundish Elbow Or Bend (I.E. No Elbows Or Bends) 22mm up to 9m 0.8m G1/2 15mm...
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Page 19: Electrical Connections
6.3 Electrical connections Where the Megaflo Eco's fitted with two immersion heaters. Each immersion heater is rated 3kW at 240V ~ In case of difficulty contact service support; contact The immersion heater(s) should be wired in details are available on page 40 of this booklet. accordance with Fig 13. - Page 20 SPINDLE POSITIONS THERMAL CUT-OUT RESET BUTTON = MINIMUM TEMP = MAXIMUM TEMP = APPROX 60 °C ROTATE SPINDLE CLOCKWISE FOR TEMPERATURE INCREASE AND COUNTER CLOCKWISE FOR TEMPERATURE DECREASE TEMPERATURE ADJUSTING SPINDLE Figure 14: Thermostat adjustment Space and heating systems controls The controls provided with the cylinder will ensure INDIRECT models the safe operation of the unit within the central...
- Page 21 4. DO NOT MOUNT WIRING CENTRE ON CYLINDER. 5. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS. THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.
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Page 22: Filling The Installation
WARNING Should the Megaflo Eco be used in conjunction with a boiler that controls the water temperature via a sensor connected to the boiler controls it should be noted that the factory fitted indirect thermostat and thermal cut-out MUST NOT be disconnected or bypassed. -
Page 23: Commissioning
Switch on the boiler, ensure the programmer is 7. Commissioning set to Hot Water and allow the cylinder to heat up to a normal working temperature (60 - 65 7.1 General recommended). If necessary the temperature can be adjusted by After filling the installation with water in the previous inserting a flat bladed screwdriver in the adjustment section please follow the following steps to complete... -
Page 24: Operation
Temperature controls - indirect units 8. Operation A combined thermostat and thermal cut-out is provided for the control of the external boiler. The 8.1 General thermostat is factory set to give a water storage temperature of approx. 60 C, however it can be set to control between 10 C and 70 C. -
Page 25: Maintenance
9. Maintenance 9.1 General Maintenance requirements Unvented hot water systems have a continuing maintenance requirement in order to ensure safe working and optimum performance. It is essential that the relief valve(s) are periodically inspected and manually opened to ensure no blockage has occurred in the valves or discharge pipework. - Page 26 Descaling immersion heater(s) Expansion volume re-charge Turn off the mains water supply, isolate the electrical supply and turn off boiler The air volume within the Megaflo Eco will periodically Attach a hosepipe to the drain cock having sufficient require recharging to ensure expanded water is length to take water to a suitable discharge point accommodated within the unit.
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Page 27: Troubleshooting
10. Troubleshooting Water contained in the cylinder may be very hot, especially following a thermal control failure. Caution must be taken when drawing water from WARNING the unit. Do not tamper with any of the safety valves The fault finding chart (table 7, below) will enable or controls supplied with the cylinder as this operational faults to be identified and their possible will invalidate any guarantee. -
Page 28: Decommissioning
11. Decommissioning 11.1 Decommissioning procedure Isolate electrical supplies and make safe Isolate the water supply Drain the cylinder Drain the primary circuit (indirect only) Remove cylinder Cap pipework Environmental information Products are manufactured from many recyclable materials. At the end of their useful life they should be disposed of at a Local Authority Recycling Centre in order to realise the full environmental benefits. -
Page 29: Spare Parts
12. Spare parts 12.1 Spare parts list A full range of spare parts are available for the cylinder range. Refer to the Technical Data label on the unit to identify the model installed and ensure the correct part is ordered. ITEM DESCRIPTION PART NUMBER... - Page 30 Figure 18: Cold water inlet controls spares, exploded views Figure 18 A: 3 bar Pressure Reducing Valve, exploded view Figure 18 B: 8 bar Expansion (Pressure Relief) Valve, exploded view Figure 18 C: Stopcock...
- Page 31 Direct control assembly and upper assembly on Indirect cylinders Spare components are comman to Upper and Lower Direct Control Assemblies Except for the Upper elements 34 and Lower element 16 Figure 19: Direct controls and immersion heater, exploded view...
- Page 32 Indirect Control Assembly Figure 20: Indirect controls and immersion heater, exploded view...
- Page 33 Spares Stockists Parts Center Tel: 0845 270 9800 www.partscenter.co.uk Advanced Water Co.Ltd. Unit D5 Enterprise Way Newey & Eyre Vale Park, Evesham Unit 3-5 Wassage Way Worcs WR11 1GS Hampton Lovett Ind. Estate Tel: 01386 760066 Droitwich, Worcestershire WR9 0NX Fax: 01386 760077 Tel: 01905 791500 Fax: 01905 791501...
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Page 34: Benchmark Checklist
Benchmark checklist... -
Page 35: Commissioning & Service Records
Commissioning & service records... -
Page 36: Guarantee
Megaflo products: • The Megaflo product has not been modified or tampered • Megaflo cylinders with in any way, other than by a Heatrae Sadia or Baxi • Megaflo calorifiers Customer Support approved engineer. The Megaflo Domestic Lifetime* Warranty •... - Page 37 Claims * Heatrae Sadia is a trading name of Baxi Heating UK Limited, Brooks House, Coventry Road, Warwick, CV34 Defects should be reported to us as soon as you are aware of them.
- Page 38 NOTES:...
- Page 39 NOTES:...
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Page 40: Customer Service
Customer service Telephone: 0344 8711535 Megaflo Hurricane Way Facsimile: 0344 8711528 Norwich E-mail: megafloservice@baxi.co.uk Norfolk NR6 6EA Important notice to installations outside of the UK. References to legislation, legal requirements, regulations, building regulations benchmark, spares stockists, guarantees and warranty are ONLY APPLICABLE WITHIN THE UK. For local legislation, legal requirements, regulations, building regulations outside of the UK, contact your local Authority.