Evolution Aqua NEXUS 220 Installation And Instruction Manual
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Evolution Aqua NEXUS 220 Installation And Instruction Manual

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NEX220180814MAN
UK
English
INSTALLATION AND INSTRUCTION MANUAL
IMPORTANT PLEASE READ:
Your Nexus 220 MUST be installed on a solid,
level base, a minimum of 1.2 metres x 1 metre.
Failure to do this will cause irreparable damage to the
filter and will therefore invalidate your warranty.
Your Nexus 220 is supplied with factory fitted components ready
for easy set-up on a pump-fed configuration.
Evolution Aqua Ltd. - Evolution House - Kellet Close - Wigan - Lancashire - United Kingdom - WN5 0LP
t +44 (0) 1942 216554 - f +44 (0) 1942 216562 - e info@evolutionaqua.com - w www.evolutionaqua.com

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  • Page 1 Evolution Aqua Ltd. - Evolution House - Kellet Close - Wigan - Lancashire - United Kingdom - WN5 0LP t +44 (0) 1942 216554 - f +44 (0) 1942 216562 - e info@evolutionaqua.com - w www.evolutionaqua.com...

  • Page 2: Table Of Contents

    INTRODUCING THE NEXUS 220 Congratulations on purchasing an Evolution Aqua Nexus 220 filtration system. The Nexus 320 and Nexus 220 filtration systems deliver dramatically improved levels of clarity for Koi ponds. Building on the success of the award winning Nexus range this new generation of filters feature a re-designed Eazy filter which utilises K1 Micro Filter Media to deliver improved mechanical filtration.

  • Page 3: Nexus 220 Parts List

    NEXUS 220 PARTS LIST Your Nexus 220 comes complete with the following items: 1) Inlet Slide Plate 2) Hosetail Inlet Assembly 3) Overflow / By-Pass Collar (For use in pump fed (Pre-installed) set-up only) 4) Eazy Mechanical Filter 5) 1 x 50 litre bag of K1 Media...

  • Page 4: Specifications

    Volume of water in inner chamber 105 litres / 23 UK gallons / 28 US gallons You can increase the biological capacity of your Nexus 220 by adding up to 100 litres of additional K1 Media into the outer chamber. You will however need to ensure that you have the correct size of air pump to enable the K1 Media to move sufficiently (see below for recommended size of air pump).

  • Page 5: Nexus 220 Dimensions

    NEXUS 220 DIMENSIONS...

  • Page 6: How The Nexus 220 Works

    HOW THE NEXUS 220 WORKS The Nexus filter is simple yet innovative. Water enters the Nexus via the inlet into the inner chamber which works as a basic vortex allowing larger solids to settle out. The water then passes through the Eazy where the finer particles are removed at the mechanical stage of filtration.
  • Page 7 The Eazy is a stainless steel vessel containing a set volume of static K1 Micro Media (18 litres for Nexus 220) which is located within the inner chamber of the Nexus. After water enters the Nexus it rotates around the Eazy in the inner...

  • Page 8: How Are You Going To Configure The Nexus 220

    HOW ARE YOU GOING TO CONFIGURE THE NEXUS 220? PUMP FED By this we mean that if your pump is going to be used to supply the water to the filter, and the filtered water then returns back into your pond via gravity, i.e. down a waterfall, or through a large diameter pipe, this is referred to as PUMP FED (i.e.

  • Page 9: Pump Fed Installation And Operating Instructions

    PUMP FED INSTALLATION INSTRUCTIONS PUMP FED INSTALLATION INSTRUCTIONS TO INSTALL THE NEXUS 220 ON A PUMP FED SET-UP PLEASE FOLLOW THE INSTRUCTIONS ON PAGES 10 TO 15.
  • Page 10 Before installation check that all the jubilee clips on the 3 x EazyConnectors are tight to prevent leaks. These EazyConnectors can be found on the inlet, outlet and underneath the centre chamber (this should be accessed before installation by lifting the Nexus 220). Please note: a minimum of 1.2m x 1.0m solid, level base is needed to support the Nexus.
  • Page 11 Evolution Aqua recommend an evoUV. NEXUS 220 PUMP FED INSTALLATION Your Nexus 220 has been supplied to you ready for you to set up for Pump fed operation. Pump Fed Installation Steps: 1. Attach the Hosetail assembly (Figure 7.1) to the EazyConnector on the Nexus Inlet (A).
  • Page 12 PUMP FED INSTALLATION INSTRUCTIONS WASTE PIPE CONNECTION The waste valves are where the waste from your Nexus is discharged when cleaning and prior to draining. The 1½” valve is for the Inner Chamber and is used for when cleaning the Eazy, while the ¾” valve is for draining the outer chamber (only when and if required). Both of these valves can be connected using a waste pipe kit (optional extra) as shown in Figure 8.1 - 8.3 or can just be discharged individually.
  • Page 13 PUMP FED INSTALLATION INSTRUCTIONS OPERATING YOUR NEXUS 220 PUMP FED Once your Nexus is installed and plumbed in as instructed, you are ready to fill the Nexus and begin filtering your pond water. To fill your Nexus first you need to open the inlet valve. With a pump fed unit you then need to switch on your pump.
  • Page 14 PUMP FED INSTALLATION INSTRUCTIONS CLEANING YOUR NEXUS 220 - PUMP FED INSTALLATION For cleaning instructions, refer to the blue cleaning guide supplied with your Nexus or follow the instructions below: 1. Insert cleaning pipe into the centre of the Eazy. Water level in the filter will start to rise.
  • Page 15 PUMP FED INSTALLATION INSTRUCTIONS FURTHER MAINTENANCE From time to time, you may find that the level of water in the inner chamber overflows and the normal cleaning procedure does not prevent this happening. At this point it may be necessary to carry out a Back Flush of your Nexus. This is a simple operation which can be done during your normal cleaning procedure.

  • Page 16: Gravity Fed Installation And Operating Instructions

    GRAVITY FED INSTALLATION INSTRUCTIONS GRAVITY FED INSTALLATION INSTRUCTIONS The Nexus 220 is supplied configured for a Pump Fed installation. Components will need to be removed before a gravity fed installation can be carried out. See pages 17 to 25.
  • Page 17 Please note: a minimum of 1.2m x 1.0m solid, level base is needed to support the Nexus. A 100mm thick concrete plinth is the best option. The Nexus 220 weighs in excess of 510kg when operating and full of water. An unlevel base...
  • Page 18 GRAVITY FED INSTALLATION INSTRUCTIONS NEXUS 220 GRAVITY FED INSTALLATION The water on a Gravity fed system should be fed from an appropriately placed bottom drain through at least a 4 inch (110mm) pipe with as short a length and fewer bends as possible (For optimum flow swept bends should be used).
  • Page 19 GRAVITY FED INSTALLATION INSTRUCTIONS CONFIGURE YOUR NEXUS 220 FOR GRAVITY FED INSTALLATION Your Nexus 220 comes with a stand pipe in the outlet. This is for use in PUMP FED SET-UPS ONLY. Please remove the standpipe from the Nexus outlet by undoing the jubilee clips (Figure 13.1) and removing the 4”- 4”...
  • Page 20 GRAVITY FED INSTALLATION INSTRUCTIONS INSTALLING YOUR NEXUS 1. Connect the pipework from your pond to the EazyConnector on the Nexus Inlet (A). 2. Connect your water pump to the 4”- 2” EazyConnector (B) on the outlet using suitable pipe work. A valve should be positioned between the pump and the Nexus, to isolate the Nexus during cleaning.
  • Page 21 GRAVITY FED INSTALLATION INSTRUCTIONS WASTE PIPE CONNECTION The waste valves are where the waste from your Nexus is discharged when cleaning and prior to draining. The 1½” valve is for the Inner Chamber (D) and is used for when cleaning the Eazy, while the ¾”...
  • Page 22 GRAVITY FED INSTALLATION INSTRUCTIONS OPERATING YOUR NEXUS 220 GRAVITY FED Once your Nexus is installed and plumbed in as instructed, you are ready to fill the Nexus and begin filtering your pond water. To fill your Nexus first you need to open all the valves before and after the Nexus.
  • Page 23 GRAVITY FED INSTALLATION INSTRUCTIONS CLEANING PROCEDURE For cleaning instructions, refer to the red cleaning guide supplied with your Nexus or follow the instructions below: 1. Switch the circulation pump off. Wait for 1 minute. 2. Insert the inlet slide plate. 3.
  • Page 24 GRAVITY FED INSTALLATION INSTRUCTIONS FURTHER MAINTENANCE From time to time, you may find that the level of water in the outer chamber runs lower than normal and the normal cleaning procedure does not rectify this. At this point it may be necessary to carry out a Back Flush of your Nexus.
  • Page 25 At times, you may want to leave your filter for longer than you would normally want between cleaning, perhaps if you go on holiday. In these instances, your Nexus 220 incorporates a manual by-pass, which will prevent the biological stage from emptying, and therefore potentially starving your pump of water, should your Eazy become full of debris.

  • Page 26: How To Get The Best From Your Nexus Filter

    • Add PURE POND to the moving bed (outer biological chamber) in the Nexus. • Feed your fish Evolution Aqua’s own food range which has been designed to create less fish waste. Ask your local EA dealer for advice. WARRANTY A copy of the warranty information is available on our website should you remove the warranty form on the following page.

  • Page 27: Warranty

    ACTIVATE YOUR 1 YEAR EXTRA FREE WARRANTY COVER, COMPLETE THE FORM & POST IT TODAY, OR GO TO www.evolutionaqua.com AND COMPLETE ONLINE. NEXUS WARRANTIES - EVOLUTION AQUA - KELLET CLOSE - WIGAN - LANCASHIRE - WN5 0LP - TEL: 01942 216554...
  • Page 28 Evolution Aqua Ltd. may contact you in the future with product updates or offers, which may be of interest to you. If you do not wish to receive this information please tick this box. NEXUS WARRANTIES - EVOLUTION AQUA - KELLET CLOSE - WIGAN - LANCASHIRE - WN5 0LP - TEL: 01942 216554...

  • Page 29: Spare Parts List

    NEXUS SPARE PARTS LIST There are a number of spare parts for the Nexus 220 that are readily available from Evolution Aqua dealers. See diagram below for relevant spare parts and product codes: 12mm air line / hose Eazy lid...

  • Page 30: Troubleshooting

    TROUBLESHOOTING K1 Micro is floating but K1 Media is not, why is this? The K1 Media in normal conditions becomes semi-buoyant within 48 hours. However, the K1 Micro (only in the Eazy) takes longer to absorb water. This can take up to one week. The K1 Micro in the Eazy doesn’t move well during the cleaning cycle.
  • Page 31 • Check your pond food is of a good quality and it is not discolouring your water. If it is please use Evolution Aqua’s range of pond food. • Check that the evoUV is working and the bulb has not exceeded its 9000 hours lifespan.
  • Page 32 Evolution Aqua are the award winning pond filtration manufacturer who put innovation, research and development at the top of their agenda. With a proven track record for delivering the latest technology to the aquatics and fish farming markets - we are the first choice for everyone from the general hobbyist to the serious fishkeeper.

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