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...
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.
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 &...
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.
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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).
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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.
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 &...
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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.
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).
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.
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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 !+"...
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.
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.
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.
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.
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...
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