1. Manuals
  2. Brands
  3. MEGAFLO Manuals
  4. Water System
  5. Eco SolaReady
  6. Product manual

MEGAFLO Eco SolaReady Product Manual

Hide thumbs Also See for Eco SolaReady:
Table of Contents

Advertisement

Quick Links

Download this manual
MEGAFLO Eco SolaReady Unvented
Hot Water Cylinders
MEGAFLO Eco SolaReady Product Guide

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Eco SolaReady and is the answer not in the manual?

Questions and answers

Related Manuals for MEGAFLO Eco SolaReady

Summary of Contents for MEGAFLO Eco SolaReady

  • Page 1 MEGAFLO Eco SolaReady Unvented Hot Water Cylinders MEGAFLO Eco SolaReady Product Guide...

  • Page 2: Table Of Contents

    Contents Product specification Introduction Component checklist General requirements Outlet/terminal fittings Limitations Water supply Electrical supply The environment Specifications and dimensions Installation Instructions General installation Installation of solar primary hydraulic station Direct model Indirect model Installation of solar differential temperature controller Commissioning Commissioning Commissioning of solar primary system...
  • Page 3 As the fluid passes through the collector panels its temperature is raised. The heated fluid is circulated through a heat exchanger coil in the base of the Megaflo Eco SolaReady solar storage cylinder transferring the heat gained to the stored water, gradually raising its temperature. The cooled fluid then returns to the collector panel to be heated again.

  • Page 4: Introduction

    Storage The Megaflo Eco SolaReady is supplied on a pallet with its associated control kits. It should be stored upright in a clean, dy, frost-free environment prior to installation.

  • Page 5: Outlet/Terminal Fittings

    Outlet / Terminal Fittings (Taps, Etc.) The Megaflo Eco SolaReady 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 SolaReady immediately after the Cold Water Combination Valve (See Figure 5 page 10).

  • Page 6: Water Supply

    The Megaflo Eco SolaReady 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).
  • Page 7 Figure 2 – Cylinder sizing and specification DIMENSION DIMENSION 250L SI 250L SI 260L SD 260L SD 300L SI 300L SI 1845 1845 1909 1909 2160 2160 1734 1734 1798 1798 2048 2048 1142 1142 1438 1438 1068 1068 1255 1255 Table 1 Size...

  • Page 8: General Installation

    The Cold Water Inlet Control kit supplied fitted to the Megaflo Eco SolaReady incorporates a full flow isolating valve which will enable the Megaflo Eco SolaReady to be isolated from the mains supply for maintenance or servicing. To close the valve the blue handle should be turned so that it lies at 90º...
  • Page 9 8 Bar Pressure Relief (Expansion) Valve – supplied fitted (see figure 4) This is installed between the 3 bar Pressure Reducing Valve and the Megaflo Eco SolaReady cylinder. Branches to drinking water outlets should be taken before the Pressure Relief Valve to avoid the possibility of warm expanded water being drawn from the tap.
  • Page 10 3 Bar Pressure Reducing Relief Valve Valve incorporating Pressure Reducing Valve, Strainer,and Check Valve. (factory tted) MCWS to Kitchen (unbalanced cold mains supply) Megaflo Eco SolaReady Tundish DOC DOC Isolating/Regulating Valves, as required Incoming Cold Water Main Expansion Vessel Discharge pipe to atmosphere...
  • Page 11 Drain Tap A drain tap is supplied fitted in the cold water supply to the Megaflo Eco SolaReady unit between the 8 Bar Pressure Relief Valve and the heater at the lowest point of the cold water supply pipe. It is recommended that the outlet point of the drain pipe work be at least 1 metre below the level of the heater (this can be achieved by attaching a hose pipe to the drain tap outlet spigot).
  • Page 12 T&P Relief Valve Insulation A set of insulating components is supplied with the Megaflo Eco SolaReady water heater and should be installed to gain maximum heat and energy saving benefits. See Figure 8 (below), for installation instructions. Warnings Under no circumstances should the factory fitted Temperature /Pressure Relief Valve be removed other than by authorised Heatrae Sadia personnel.
  • Page 13 Discharge Pipework It is a requirement of Building Regulations that any discharge from an unvented system is conveyed to where it is visible, but will not cause danger to persons in or about the building. The tundish and discharge pipes should be fitted in accordance with the requirements and guidance notes of Building Regulations.
  • Page 14 The following extract is taken from the latest G3 Regulations Discharge pipes from safety devices Discharge pipe D1 3.50 Safety devices such as temperature relief valves or combined temperature and pressure and pressure relief valves (see paragraphs 3.13 or 3.18) should discharge either directly or by way of a manifold via a short length of metal pipe (D1) to a tundish.

  • Page 15: Installation Of Solar Primary Hydraulic Station

    The solar collectors (panels or evacuated tubes) must be installed according to the instructions supplied with those selected. We can only guarantee the system performance if installed in conjunction with Megaflo supplied collectors. The difference in height between the highest point in the pipework (collector) and the level of the hydraulic pump station determines the static head for the system.
  • Page 16 1. Connect the safety group (Fig 15 Item 1) to the conne on the hydraulic station return isolating valve assembly (F Item 3). Ensure that the pre-fitted gasket is securely in pl the safety group prior to connection. Connecting the solar expansion vessel Mount the solar expansion vessel (Fig 11 Item 5) adjacent to the hydraulic station so that the vessel can be connected to the Connecting the solar expansion vessel Fig.

  • Page 17: Direct Model

    Direct Model Immersion Heater(s) The Megaflo Eco SolaReady Direct is supplied with two factory fitted immersion heaters, each rated 3kW at 240V. See fig 2 page 7 for positions. Wiring (See Figure 16) All electrical wiring should be carried out by a competent electrician and be in accordance with the latest I.E.E. Wiring Regulations.

  • Page 18: Indirect Model

    Boiler Selection The Megaflo Eco SolaReady Indirect models are supplied with an auxiliary heating coil and are suitable for use with most gas or oil fired boilers compatible with unvented systems i.e. fitted with a temperature control thermostat and thermal cut-out. If in doubt consult the boiler manufacturer.
  • Page 19 Figure 16 – Wiring diagrams Diagram A In conjunction with auxiliary heating boiler – no reheat control by solar differential controller. Live 3A fused supply Boiler terminal strip Programmer Neutral DHW CH ON Green & yellow Blue Terminal box (supplied) Brown Grey Link...
  • Page 20 Diagram D In conjunction with auxiliary heating boiler with a 3 port mid position valve system – no reheat control via solar controller. 3A fused supply Boiler terminal strip Programmer DHW ON DHW OFF CH ON Terminal box (supplied) Link Link Link Not used...

  • Page 21: Installation Of Solar Differential Temperature Controller

    Installati Installation of solar differential temperature Fig. 23 Electrical con controller Installation The solar differential temperature controller is fitted on the 240 Volts 1. Always disconnect fro Figure 17 solar hydraulic pump station. It must be removed from the controller cover. The e Fig.

  • Page 22: Commissioning

    Vent any trapped air by opening the air bleed. Switch on the boiler, ensure the programmer is set to Domestic Hot Water. Allow the Megaflo Eco SolaReady unit to heat up and check that the indirect thermostat and 2-port motorised valve operate correctly. A storage temperature of approx. 60ºC is recommended.

  • Page 23: Commissioning Of Solar Primary System

    Commissioning of solar primary system Air Test An air test may be used on the solar primary pipework to Figure 19 detect any gross leakage prior to flushing and filling with Fig. 19 solar heat transfer fluid. Pressurise the system to a maximum Commissi of 1 bar to check for leaks.

  • Page 24: Commissioning Of Hydraulic Station

    Solar fluid Close the fill and drain valve - safety group (Fig. 19 Item 1) Figure 21 and the fill and drain valve - flow meter (Fig. 19 Item 2) and pressurise the pump slightly prior to filling the system. If an electric pump is being used follow the Fig.

  • Page 25: Commissioning Of Solar Differential Temperature Controller

    Commissioning of solar differential temperature controller On completion of commissioning the Solar Controller, note Figure 23 Fig. 28 all the required information in the Solar Commissioning Diagram of all possible symbols 11.0 Commission Record Sheet on page 35. Main Menu On completion of commissio Main Menu required information in the S...
  • Page 26 Commissioning of solar controller Fig. 29 Fig. 29 Fig. 29 Info Menu (Fig 24) Fig. 29 11.0 Comm 11.0 Comm 11.0 Comm 11.0 Comm Fig. 29 In this menu mode all measured values and operating states Press to scroll Press Press to scroll to scroll...
  • Page 27 Fig. 30 Fig. 30 Fig. 30 Fig. 30 Press to scroll Commissioning of solar controller Fig. 30 Press to scroll up or down to the required sub function. Press to scroll up or down to the required sub function. 11.4 Press to scroll Fig.
  • Page 28 Fig. 31 Commissioning of solar controller 11.0 Press to scroll Fig. 31 Manual Operation Menu (Fig 26) Fig. 31 up or down to the required sub function. 11.0 Commissioni Fig. 31 For commissioning, service and test purposes the solar Press to scroll 11.0 Commissioning of s...
  • Page 29 Commissioning of solar controller Basic Adjustment Menu (Fig 27) Fig. 32 Adjustment and changes in this menu must be carried out 11.0 Figure 27 only by a competent installer or service engineer. Press to scroll Fig. 32 Incorrect adjustments may adversely affect the function of up or down to the required sub function.
  • Page 30 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller 11.0 Commissioning of solar controller Commissioning of solar controller 11.0 Commissioning of solar controller 11.7 Overview of display and operating elements...
  • Page 31 Commissioning of solar controller Controller functions The differential temperature controller contains many functions to regulate and monitor the solar primary system. Including – controller functions for heating the solar cylinder – functions for system protection and system monitoring – additional functions (other accessories may be required to achieve these functions). General controller functions The controller collects the temperatures from various measuring points and determines the right time to charge the storage tank taking account of programmed (additional) functions and controller parameters.
  • Page 32 11.0 Commissioning of solar controller Thermostat (heating) The thermostat is an independent control circuit from the storage loading. Thus, auxiliary heating of the top area of the 11.13 Rotational speed regulation storage cylinder is made possible. The output A3 will be (see Fig 29): 1.
  • Page 33 5x7 segment display Temperature measuring point collector - return Temperature measuring point storage tank upper Temperature measuring point collector Antifreeze sensor Flow monitoring Temperature measuring point storage tank lower If during normal operation the flow temperature rises above 90°C a warning indication will be shown. Switch ouput 3 If the energy productivity measurement option is deactivated, the temperature difference between collector and storage Temperature measuring point collector - return...
  • Page 34 Benchmark™ commissioning checklist (page 48) to accept completion. The Service Record (page 50) should be filled in when any subsequent service or maintenance operation is carried out on the Megaflo Eco SolaReady unit (See Maintenance and Servicing, page 37). © Baxi Heating UK 2012...

  • Page 35: Commissioning Record

    Suitably fused isolating device installed ❑ y t i Controller earthed ❑ * Megaflo recommends these settings are left at the default value. Solar Cylinder Cylinder installed and commissioned in ❑ accordance with cylinder installation instructions © Baxi Heating UK 2012...

  • Page 36: Servicing And Maintenance Record Sheet

    Servicing and maintenance record © Baxi Heating UK 2012...

  • Page 37: Maintenance

    In hard water areas consideration should be given to periodically descaling the immersion heater elements. To do this the Megaflo Eco SolaReady unit will need to be drained, details below list how to drain the unit and remove the immersion heater(s).

  • Page 38: Fault Finding

    The Fault finding flow diagrams (Fig 32) will enable operational faults to be identified and their possible causes rectified. Any work carried out on the Megaflo Eco SolaReady unvented water heater and its associated controls MUST be carried out by a competent installer for unvented water heating systems. In case of doubt contact the Megaflo Eco SolaReady Service Department.
  • Page 39 Figure 32 – Fault finding flow diagrams No hot water flow Is the mains water Turn on mains water supply supply turned on? Turn off water supply. Remove and Is the strainer blocked? clean filter (see Fig 33) Is the cold water Check and refit as required.
  • Page 40 Water discharge from Water from hot taps is temperature and pressure lukewarm relief valve Expansion valve not opening at Heating fault – Is the discharge Follow steps as for cold water correct pressure. Replace expansion water may have cooled intermittent? relief valve cartridge Thermal control failure.
  • Page 41 No display at solar differential temperature controller Is the 230/240V~ power supply correctly Connect any wiring faults wired? Is the 230/240V~ power Switch on power supply supply switched on? Reset thermal cut-out. Investigate cause of operation and rectify. Has thermal cut-out on NOTE: Allow the cylinder to cool cylinder operated? or draw off the hot water before...

  • Page 42: Servicing

    Spares Spare parts A full range of spare parts are available for the Megaflo Eco SolaReady range. Refer to the Technical Data label on the unit to identify the model installed and ensure the correct part is ordered. Description Part no.
  • Page 43 Figure 18 - Exploded View of 3 Bar Inlet Control Valve Figure 33 – Exploded view of 3 bar inlet control valve Pressure Reducing Valve Cartridge (3 Bar) Strainer Mesh 3 Bar Pressure Reducing Valve - Complete 95:605:886 Figure 34 – Exploded view of 8 bar pressure relief valve Figure 19 - Exploded View of 8 Bar Pressure Relief Valve Expansion Relief Cartridge 8 Bar Pressure Relief Valve, Complete...
  • Page 44 Indirect units Direct units 1/2”BSP Sensor Pocket Assembly Short 95:607:938 Assembly Short Combined Thermostat and 5 Pin Combined Thermostat Thermal Cut-Out and Thermal Cut-Out 95:612:717 95:612:716 1/2”BSP Sensor Pocket Assembly Short Mounting Plate (Indirect) Terminal cover 95:607:938 95:607:929 95:614:118 6 Way Terminal Block 95:607:933 Gasket Combined Thermostat and...
  • Page 45 Direct Combined Thermostat and Thermal Cut-Out 95:612:717 Mounting Plate (Direct) 95:607:929 1/2”BSP Sensor Pocket Assembly Short 95:607:938 Titanium Immersion Heater (Upper) Three Way Terminal Block Direct Combined 95:606:989 95:607:932 Thermostat and Thermal Cut-Out 95:612:717 Gasket Mounting Plate (Direct) Backnut Terminal cover 95:611:822 95:607:929 95:607:940...
  • Page 46 Spares Temperature gauge Safety group 720689101 720690901 Insulation 720689701 Solar primary circulating pump 720688101 Solar differential temperature controller 720709001 Insulation insert 720689901 Solar expansion vessel self-sealing connection 5119779 Solar expansion vessel 24 litres 5119548 DHW expansion vessel 95:607:612...

  • Page 47: Spares Stockists

    Spares Stockists Electric Water Heating Co. 2 Horsecroft Place Pinnacles Harlow Essex CM19 5BT Tel: 0845 0553811 E-Mail: sales@ewh.co.uk Special Product Division Units 9 & 10 Hexagon Business Centre Springfield Road Hayes Middlesex UB40 0TY Tel: 0208 5730574 Parts Center Network 65 Business Park Bentley Wood Way Burnley...
  • Page 49 SOLAR THERMAL COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the Solar Thermal System and associated equipment as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights.
  • Page 51 Notes...

  • Page 52: Customer Service Contacts

    Customer service Telephone: Megaflo 0344 8711535 Hurricane Way Facsimile: Norwich 0344 8711528 Norfolk NR6 6EA E-mail: megafloservice@heateam.co.uk 3600 6219 Issue 03...

Table of Contents