Fabdec EXCELSIOR Installation Manual

Unvented water heater
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March 2014

Installation Manual

EXCELSIOR Unvented Water Heater
EXCELSIOR
®
Water heating systems

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Summary of Contents for Fabdec EXCELSIOR

  • Page 1: Installation Manual

    March 2014 Installation Manual EXCELSIOR Unvented Water Heater EXCELSIOR ® Water heating systems...
  • Page 2: Table Of Contents

    Section: Title: Page: Introduction Specifier’s Guide Standard Equipment Dimensions & Performance Excelsior Direct & Indirect Internal Excelsior Direct & Indirect External Excelsior Solar Range Excelsior Heat Pump Range Excelsior Buffer Range Excelsior Horizontal Direct Range Excelsior Horizontal Indirect Range Installation Instructions...
  • Page 3: Introduction

    Excelsior Heat Pump The Excelsior Heat Pump range has been specifically designed to optimise the output from the heat pump. It is fitted with a corrugated coil heat exchanger that has a larger diameter than that used on the standard Excelsior cylinders.
  • Page 4: Standard Equipment

    1.2 Standard Equipment Check that all the components of your Excelsior unit are contained in the kit prior to installation. Your Excelsior should include the following: 3kW heating element - incorporating control thermostat and re-settable safety cut-out Combination (control) valve comprising: Line strainer, non-return (check) valve, pressure reducing valve &...
  • Page 5: Excelsior Direct & Indirect Internal

    2.1 Excelsior Direct and Indirect Cylinders-Internal %" " " "...
  • Page 6: Excelsior Direct & Indirect External

    2.2 Excelsior Direct and Indirect Cylinders-External &" " " "...
  • Page 7: Excelsior Solar Range

    2.3 Excelsior Solar Range '" " " "...
  • Page 8: Excelsior Heat Pump Range

    2.4 Excelsior Heat Pump Range (" " " "...
  • Page 9: Excelsior Buffer Range

    2.5 Excelsior Buffer Range 2.6 Excelsior Horizontal Direct Range )" " " "...
  • Page 10: Excelsior Horizontal Indirect Range

    2.7 Excelsior Horizontal Indirect Range *+" " " "...
  • Page 11: Installation Instructions

    Try to keep pipe runs as short as possible for maximum economy, especially hot water discharge pipes running down from the Excelsior unit.   The unit can be fitted into a conventional airing cupboard and does not require any additional insulation.
  • Page 12 Drain Tap A drain tap to drain the unit must be fitted to the cold-water inlet pipe between the Excelsior cylinder and the cold water valve assembly at its lowest level possible (see figures 2, 3 and 5).
  • Page 13 This smaller tank is connected to the cold-water inlet side of the vessel. Mount the tank according to separate manufacturer’s instructions provided with the external expansion vessel. A suitable expansion vessel with a pre-charge pressure of 3.5 bar is supplied with Excelsior cylinders with external expansion.
  • Page 14: Recommended Installation Schematics

    3.2 Recommended Installation Schematics Figure 2. Installation Schematic – External Expansion " " Figure 3. Installation Schematic – Internal Expansion " *$" " " "...
  • Page 15 Figure 4. Combination Valve " Figure 5. Inlet Group – External Expansion" Figure 6. Inlet Group – Internal Expansion" " *%" " " "...
  • Page 16: Wiring Instructions

    3.3 Wiring Instructions " WARNING: ALL ELECTRICAL WIRING SHOULD BE CARRIED OUT BY A COMPETENT ELECTRICAL CONTRACTOR AND MUST CONFORM TO THE LATEST IEE WIRING REGULATIONS. DO NOT SWITCH THE " POWER ON UNTIL THE UNIT HAS BEEN FILLED WITH WATER AND ALL WIRING HAS BEEN EARTHED. (SEE FIGURES 7, 8, 9 &...
  • Page 17 Replacement elements can be obtained through your authorised service agent. " Immersion Heater (Excelsior Solar)" Secondary circuit connections MUST be made to the cylinder in accordance with the recommended installation diagram. A drain cock* should be fitted in the cold water inlet to facilitate draining of the cylinder. * Not supplied.
  • Page 18: Tundish

    If you need to site the Excelsior unit in the middle of the house your discharge pipe to the tundish can be as far away as 9m, which in most cases is enough to run the final discharge point. After 9m, increase the pipe size to a greater diameter than 22mm and accordingly for subsequent 9m lengths, (see table 1).
  • Page 19: Discharge Pipework

    3.5 Discharge Pipework G3 Requirement ‘...there shall be precautions...to ensure that the hot water discharged from safety devices is safely conveyed to where it is visible but will not cause danger to persons in or about the building.’ G3 Guidance Section 3.5 The discharge pipe (D1) from the vessel up to and including tundish is generally supplied by the manufacturer of the hot water storage system.
  • Page 20 Figure 13. Typical discharge pipe arrangement" IMPORTANT: THE DISCHARGE WILL CONSIST OF SCALDING WATER AND STEAM. ASPHALT, ROOFING FELT AND NON- METALLIC RAINWATER GOODS MAY BE DAMAGED BY SUCH DISCHARGES. " Table 1. Sizing of copper discharge pipe (D2) for common temperature & pressure relief valve sizes !+"...
  • Page 21: Commissioning

    Attach a hosepipe to the drain cock having sufficient length to take water to a suitable discharge point. Open the drain cock. Open the hot water tap nearest to the Excelsior unit. If water fails to drain from the Excelsior unit, vent the system by opening the temperature and pressure relief valve.
  • Page 22: Warranty

    4. Warranty Fabdec Ltd guarantee the immersion(s) and controls for a period of 1 year from date of purchase, excluding any failure caused by lime-scale, providing that they have been installed for their intended use by a competent person and have not been modified in any way.
  • Page 23: Servicing & Maintenance

    Only use spare parts authorised by Fabdec Ltd. The use of other parts will invalidate the warranty. Excelsior cylinders utilising internal expansion will require checking periodically to ensure the air gap is sufficient. If the air gap requires replenishing, follow the steps listed in the Commissioning section.
  • Page 24: Fault Finding

    Fault Finding WARNING: Disconnect electrical supply before removing any electrical equipment cover. Fault Possible cause Remedy The cylinder cools down overnight One pipe circulation in the case of Install a non-return valve as close as short pipe networks with low pressure possible to the cylinder loss Primary heating is not working.
  • Page 25: Spare Parts

    7. Spare parts When ordering spare parts please contact Fabdec Sales Department and quote the part number required. " Description: Fabdec Part Number: Expansion vessel: 12 Litre 951920 19 Litre 951921 24 Litre 951922 Expansion vessel bracket 951918 T&P valve 7 bar 90°C...
  • Page 26: Commissioning Checklist

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  • Page 27: Service Record

    " !'" " " " "...
  • Page 28 Fabdec Ltd Fabdec GmbH Fabdec LLC Grange Road Gerhardstrasse 5 October Embankment 12, building 2 Ellesmere 45892 Gelsenkirchen 193091 Saint Petersburg Shropshire Germany Russia SY12 9DG Tel: +44 (0) 1691 627200 Tel: + 49 (0) 209 700 900 Tel: + 7 812 715 0102...

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