Related Manuals for MEGAFLO Compact 2d
Summary of Contents for MEGAFLO Compact 2d
- Page 1 Megaflo Compact 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 Warranty 2.1 General safety warnings 3. Technical specifications 4. -
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 CAUTION pressure-relief device and this pipe must be left open to the atmosphere; (see page 18 for more Do not operate immersion heaters until the details) cylinder has been filled with water. -the pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not blocked;... -
Page 5: Technical Specifications
3. Technical specifications Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Coil surface area (m²) 0.51 15l/min 33.1 40.1 43.0 45.1 52.8 Coil heat up times 30l/min 26.9 30.2 34.8 37.7 46.7 45/min 25.0 28.8 32.3 34.2 41.7 15l/min 13.1... - 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) 1.53 1.59 1.80 1.97 2.22 Mixed water delivery to 40°C Weight empty (kg) Weight full (kg) ¹...
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Page 7: General Information
General information: 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 Pipe connections accept 22mm outside diameter pipe (compression nuts and olives supplied). - Page 8 30° 32° Size DIMENSIONS (mm) 1130 1256 1008 1413 1084 1515 1110 1309 1766 Table 3: Dimensions Direct Cylinders Figure 1: General dimensions - Direct models 30° 27° 32° 47° Size DIMENSIONS (mm) 1130 1256 1008 1413 1084 1515 1110 1309 1766 Table 4: Dimensions Indirect Cylinders Figure 2: General dimensions - Indirect models...
- Page 9 BALANCED COLD WATER CONNECTION (IF REQUIRED) TO HOT OUTLET 3 BAR PRESSURE REDUCING VALVE MIXING VALVE STOP COCK (IF USED IN THIS POSITION) MAINS WATER SUPPLY T&P and RELIEF VALVE TUNDISH ELEMENT/CONTROLS HOUSING 1/2” BSP SENSOR POCKET ASSEMBLY LONG PRIMARY DRAIN COCK RETURN DISCHARGE PIPE...
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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 appliance is a purpose designed unvented water be capable of supporting the packaged weight of the heater. - Page 11 Figure 5: 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
The draining tap supplied should be installed in 6. Installation the cold water supply to the cylinder between the expansion valve and the heater at as low a level 6.1 General as possible. It is recommended that the outlet point of the drain After reading the previous sections in this booklet and pipework be at least 1 metre below the level of the choosing a suitable location for the appliance please... - Page 14 the direction of flow arrows pointing in the correct direction. The Expansion Relief has been incorporated into the T&P valve for ease of installation No other valves should be placed between the cold pressure reducing valve and the appliance. Cold water control pack Primary circuit control The 2 port motorised valve supplied with the CAUTION...
- Page 15 Secondary circulation If secondary circulation is required it is recommended that it be connected to the cylinder as shown (see fig 10). The secondary return pipe should be in 15mm pipe and incorporate a check valve to prevent backflow. A suitable WRAS approved circulation pump will be required.
- 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 Worked example of discharge pipe sizing (c) if plastic pipes are used as branch pipes carrying 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's are fitted with two immersion heaters. Each immersion heater is rated 3kW at 240V ~ 1ph 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. - Page 20 SPINDLE POSITIONS THERMAL CUT-OUT RESET BUTTON = MINIMUM TEMP = MAXIMUM TEMP 70°C = APPROX 57 °C ROTATE SPINDLE CLOCKWISE FOR TEMPERATURE INCREASE AND COUNTER CLOCKWISE FOR TEMPERATURE DECREASE TEMPERATURE ADJUSTING SPINDLE The immersion heater and indirect controls MUST Figure 14: Thermostat adjustment be earthed.
- Page 21 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. Figure 16: Wiring schematic - 2 x 2 Port valve heating system Megaflo Indirect thermal controls Megaflo (DHW) 2-Port (Supplied fitted) Programmer valve (Supplied) Bl Br G...
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Page 22: Filling The Installation
WARNING Should the Megaflo be used in conjunction with a boiler or external controls that control the water temperature via a sensor connected to the cylinder, it should be noted that the factory fitted indirect thermostat and thermal cut-out MUST NOT be disconnected or bypassed. -
Page 23: Commissioning
reduce the outlet temperature to approx 55°C. It is 7. Commissioning not adjustable 7.1 General Indirect units Fill the indirect (primary) circuit following the boiler After filling the installation with water in the previous manufacturer’s commissioning instructions. section please follow the following steps to complete To ensure the cylinder primary heat exchanger is the installation of the unit. -
Page 24: Operation
Temperature adjustment is made by rotating the 8. Operation adjustment spindle on the top of the thermostat. The adjustment represents a temperature range of 8.1 General 10°C to 70°C (see page 20, Fig 14 for method of adjustment). Maximum working temperature is 70°C. WARNING The boiler thermostat and thermal cut-out must be wired in series with the 2 port motorised zone... -
Page 25: Maintenance
9. Maintenance Descaling immersion heater(s) 9.1 General CAUTION Maintenance requirements DO NOT use a sharp implement as damage Unvented hot water systems have a continuing to the element surface could be caused. maintenance requirement in order to ensure safe working and optimum performance. It is essential that the relief valve(s) are periodically inspected and Turn off the mains water supply, isolate the electrical manually opened to ensure no blockage has occurred... - Page 26 The air volume will be automatically recharged as the unit refills. If after following the above actions water still discharges from the expansion relief valve, further advice should be sought from a competent installer or the Megaflo service department.
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Page 27: Troubleshooting
After servicing, complete the relevant Service 10. Troubleshooting Interval Record section of the Benchmark Checklist located on page 35 of this document. Any spare parts used MUST be authorised parts. WARNING Disconnect the electrical supply before removing any electrical equipment covers. Do not tamper with any of the safety valves NEVER bypass any thermal controls or operate or controls supplied with the cylinder as this... -
Page 28: Decommissioning
11. Decommissioning 11.1 Decommissioning procedure Isolate electrical supplies and make safe Isolate the water supply Drain the appliance Drain the primary circuit (indirect only) Remove appliance 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 Megaflo Compact range. Refer to the Technical Data label on the unit to identify the model installed and ensure the correct part is ordered. - Page 30 Pressure Reducing Valve Cartridge (3 Bar) Strainer Mesh 3 Bar Pressure Reducing Valve - Complete Figure 18: Pressure Reducing Valve exploded view Mixed water Cold water from Mixer Valve Mains Hot water from cylinder Figure 19: Mixing valve assembly...
- Page 31 Figure 20: Indirect controls - exploded view...
- Page 32 Figure 21: Direct controls - 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: Warranty
• Installation not in line with the installer and user manuals provided, • The Megaflo Compact product and any part or parts of the Megaflo product (whether factory fitted or otherwise) • Failure to comply with installation instructions (whether... - Page 37 Megaflo Compact 25 year warranty is the period during which the first owner of the Megaflo Compact or a new build home continues to own the property. Should the property be sold, the new owner and any subsequent...
- 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.
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