Coral AquanoxOpen Vented Thermal Store to provide mains pressure domestic hot water

Elson is part of the BDR Thermea group, the UK’s leading

manufacturer of hot water solutions utilising unvented

cylinder and thermal store technology.

Our new range of open vented thermal store units are the

latest addition to our comprehensive portfolio of products.

Satisfying all of your hot water needs the new Coral Aquanox

thermal store range provides the best possible levels of hot

water comfort, powerful mains pressure showering and fast

filling baths in the safest, most efficient manner.

The Coral Aquanox has been designed and manufactured

using the most advanced technology available. It incorporates

a Duplex stainless steel cylinder for maximum strength

and corrosion resistance, CFC/HCFC-free injected foam

insulation to ensure the best possible heating efficiency, and

a revolutionary, newly designed, domestic hot water coil that

makes full use of the stored heat available and gives excellent

flow rate performance.

Being part of one of Europe’s leading heating groups,

Elson also offers you first class customer service, reliable

specification advice on product selection and system type,

a fully indemnified design service and installation support

and guidance on how to get the optimum performance

from your system.

Designed to give maximum performance,

efficiency and economy

Duplex stainless steel cylinder giving maximum

strength and corrosion resistance

Revolutionary new coil design giving improved

flow rates and maximising energy utilisation

Flow rates of up to 25 litres per minute

High levels of insulation for low standing heat

losses and greater economy

Integral feed and expansion tank as standard

Long-life Superloy ‘L shaped’ immersion heater

Fully indemnified design service available

Electrical protection rated at IPX2

Ozone depletion factor of zero

Global warming potential of 3.1

Products tested and compliant with

EN 60335-1:2002 and EN 60335-2-21:2003

Fully compliant with UK Water Regulations and

Building Regulations Part L

Five year warranty with on-site service support

Coral AquanoxOpen Vented Thermal Store to provide mains pressure domestic hot water

2

IntroductionThe Coral Aquanox is an open vented thermal store that

provides mains pressure domestic hot water. It does so by

using a low pressure open vented hot water storage system.

This means you receive all the benefits of mains pressure hot

water but without the constraints associated with installing an

unvented cylinder.

How a Thermal Store worksThe hot water storage cylinder in the Coral Aquanox is

filled with water via the integral feed and expansion tank.

The water is then heated directly by an immersion heater

or indirectly by a heating coil within the cylinder that is

connected to a central heating system. This stored hot

water is referred to as a ‘thermal store’.

Mains cold water is then heated as it passes through

the purpose designed domestic hot water coil, providing

instantaneous hot water at the taps. The temperature of

the domestic hot water is controlled by a WRAS and TMV2

approved thermostatic mixing valve with a rapid fail-safe

function to ensure safety and improve economy.

SitingThe thermal store is designed to be floor standing and can

be installed in any frost free location within the dwelling

without it affecting its performance.

As the Coral Aquanox is an open vented appliance it is not

subject to the requirements of Section G3 of the Building

Regulations relating to unvented water heaters, so therefore

can be installed by any competent installer. Furthermore

it means that it does not require the installation of a safety

discharge pipe going to the outside of the dwelling to

accommodate the discharge from a temperature and

pressure relief valve. For the ultimate in flexible site options

we also offer a manual fill version of the Coral Aquanox.

3

MADE IN THE UK5 YEAR GUARANTEE

Coral AquanoxOpen Vented Thermal Store to provide mains pressure domestic hot water

4

Cylinder ConstructionThe Coral Aquanox thermal store range is constructed from

strong and lightweight Duplex stainless steel which offers a

superior resistance to corrosion, particularly in aggressive

water areas. Duplex stainless steel ensures the longest

possible working life for every thermal store.

InstallationThe Coral Aquanox has been designed with the installer in

mind. All plumbing and electrical connections are located at

the front of the unit to give easy access for both installation

and servicing. All plumbing connections are 22mm

compression.

With an integrated feed and expansion tank the thermal store

can be installed in any frost free environment, including an

airing cupboard, loft, cellar, utility room or even in a garage.

High Efficiency and Maximum EconomyTo minimise the standing heat loss from the cylinder and

therefore maximise economy, a 60mm thick layer of high

performance polyurethane foam fills the space between the

inner vessel and outer casing. This also ensures the unit will

comply with pending European Legislation that is due to be

implemented in the near future.

To demonstrate just how important we view the subject of

heating efficiency and the need to reduce heat wastage to

improve economy, the Coral Aquanox is supplied with an

innovative insulation casing to reduce heat loss through the

blending valve.

The base of the unit is also fully insulated and stands on three

moulded feet to minimise heat loss to the supporting floor.

Immersion heaters and controls are fully integrated with no

large external bosses to radiate heat.

Technical Information for Heating System Designers and SAP AssessorsThe standing heat loss data from a thermal store should

not be directly compared with heat loss data from either

unvented or vented cylinders as they are treated differently

in SAP. The SAP calculator takes account of these different

types of store and applies various correction factors to reflect

the different ways the hot water is generated. SAP assessors

should input the standing heat loss data given on the following

page into the SAP calculator. The polyurethane foam

insulation is CFC/HCFC free and has an ozone depletion

factor of zero and a global warming potential of 3.1.

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Dimensions and ordering

Specifier Advice Line 0844 335 8819specifier@elsonhotwater.co.uk

Coral Aquanox Indirect Coral Aquanox Direct

Model – Indirect Autofill 120ti 150ti 175ti 210ti

Part code 93:080:017 93:080:021 93:080:025 93:080:029

Model – Indirect Manual Fill 120ti 150ti 175ti 210ti

Part code 93:080:018 93:080:022 93:080:026 93:080:030

Model – Direct Autofill 120td 150td 175td 210td

Part code 93:080:001 93:080:005 93:080:009 93:080:013

Model – Direct Manual Fill 120td 150td 175td 210td

Part code 93:080:002 93:080:006 93:080:010 93:080:014

Model 120ti 150ti 175ti 210ti

Capacity (litres) 120 150 175 210

Dimension (mm) A 1111 1274 1450 1677 B 516 626 801 1033

Weight (kg) Empty 43 53 57 67 Full 163 203 232 277

Standing heat loss per day (kWh/24h) 1.26 1.46 1.61 1.80

Model 120td 150td 175td 210td

Capacity (litres) 120 150 175 210

Dimension (mm) A 1111 1274 1450 1677 B 516 626 801 1033 C – 724 900 1127

Weight (kg) Empty 38 48 52 63 Full 158 198 227 273

Standing heat loss per day (kWh/24h) 1.26 1.46 1.61 1.80

316450

A B

20°27°

620

650

Ø580

310 360450

A C B

20°27°

620

650

Ø580

310

6

Specification and installation

SpecificationNominal Capacities 120, 150, 175 and 210 litres in all models and fill options.

Element Long-life Incoloy 825 sheathed element, incorporated into an easily-removable heater plate, should replacement be necessary. Rated 3kW @ 240V.

Outer Casing White plastic-coated corrosion-proofed steel with grey high impact thermoplastic moulded top and bottom covers.

Thermal Insulation CFC/HCFC-free (ODP ZERO) fire retardant expanded polyurethane. 60mm thickness. GWP 3.1 (Global Warming Potential).

Inner Container Duplex stainless steel, pressure tested to 15 bar.

Primary Coil 22mm diameter stainless steel. Rated to 10 bar. Purpose designed 1.1m2 coil for improved performance.

Thermostat Capillary type thermostat & thermal cut-out on all models.

Direct Models: Element thermostat adjustable 12°C to 85°C. Manual resettable thermal cut-out, set to 96°C.

Indirect Models: Primary thermostat adjustable 12°C to 85°C. Manual resettable thermal cut-out, set to 96°C.

Approvals Nemko approved. Kiwa approved to UK Water Supply Regulations. Manufactured in the UK in an ISO 9001:2008, ISO 14001:2004 and BS OHSAS 18001:2007 registered factory.

Installation Open vented mains pressure hot water thermal store units do not require safety discharge pipework and do not fall under the same regulations as unvented cylinders.

Fixing Feet on bottom moulding for floor mounting.

Plumbing Connections Cold feed and domestic hot water flow – 22mm.

Fittings Compression nuts and olives included.

Primary Coil 22mm compression fittings.

Blending Valve Factory set at 55ºC. Adjustable from 38ºC to 65ºC.

Operating Temperature Recommended 75°C to 85ºC. Adjustable from 12°C to 85°C.

Water Expansion 6 litre header tank supplied with 120-175 litre models. 2 x 6 litre header tanks supplied with 210 litre model with copper ball valve arrangement.

Minimum Water Supply Requirements If there are any doubts about water supply pressure or flow rates please contact our Specification Advice Team to discuss.

Compatible Boilers Electric, gas or oil fired – open vent or sealed system type, fitted with integral control thermostat and cut-out. A pumped supply to the primary coil is required.

Visual Overflow Indicator 22mm compression inlet to 28mm compression outlet.

ElectricalDirect Models: Connection is to the combined thermostat/thermal cut-out, housed within the integrated controls housing. The electrical supply must be permanently connected via a double pole linked isolating switch with a minimum break capacity of 13A.

Indirect Models: Controls should be wired to the boiler, programmer etc. in accordance with the control scheme being used.

All electrical wiring must conform to the latest IEE Wiring Regulations.

GuaranteeOn-site service support including parts and labour for 12 months from date of installation. After the initial 12 months, a guarantee will apply for a further four years for the stainless steel inner vessel only. During this four year period, in the event of a cylinder leak, a replacement product will be issued provided that the replacement is carried out by one of our heateam engineers, for which reasonable labour charges will apply.

The guarantee is valid provided that:

• Ithasbeencorrectlyinstalledaspertheinstructionscontainedintheinstructionmanual and all relevant Codes of Practice and Regulations in force at the time of installation.

• TheBenchmarkChecklisthasbeencompleteduponcommissioningandtheBenchmark Service Record is completed for each service.

• Ithasnotbeenmodifiedinanyway,otherthanbyElson.

• Ithasnotbeenfrostdamaged.

• Ithasnotbeentamperedwithorbeensubjectedtomisuseorneglect.

• Thefaultisnotscalerelated.

• Within60daysofinstallationtheusercompletesandreturnsthecertificatesupplied along with the proof of purchase to register the product.

• IthasbeeninstalledintheUnitedKingdom.

• Thefaultisnotcausedbyhighchloridelevelsinthewatersupplyorincorrectdisinfection methods. Maximum permissible chloride level 200mg/l (PPM).

Evidence of purchase and date of supply may be required. The guarantee is transferable. This guarantee does not affect your statutory rights.

Specifier Advice Line 0844 335 8819specifier@elsonhotwater.co.uk

MADE IN THE UK5 YEAR GUARANTEE

Application Indirect Direct

Bedsit 1 shower 120ti 120td

1 bedroom 1 shower 120ti 120td 1 bath 120ti 150td

2 bedroom 1 bath 150ti 150td 1 bath & 1 shower 150ti 175td

3 bedroom 1 bath & shower 150ti 175td 2 baths 210ti 210td

4 bedroom 1 bath & shower 175ti 210td 2 baths 210ti 210td

Selection guide

Sizing in accordance with BS6700.This selection chart is for guidance only. Hot water requirements will vary dependent on bath size and usage patterns.Please contact the Specification Advice Team for further advice.

Typical installation schematics

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Specifier Advice Line 0844 335 8819specifier@elsonhotwater.co.uk

AAV GasCWS

P2 metres isrequired forexpansion in

pipework beforenearest cold

draw-off

Where expansion downthe mains is not possible

fit an expansion vessel with acapacity not less than 1000ml

Indirect model

CWS

Where expansion downthe mains is not possible

fit an expansion vessel with acapacity not less than 1000ml

2 metres isrequired forexpansion in

pipework beforenearest cold

draw-off

Direct model

The hydraulic schematics within this document are for guidance only and do not constitute system design. Some components may not be detailed for clarity purposes.

Lock Shield Valve

Strainer

Double Reg. Valve

Drain Cock

Angle pattern Drain Cock

Expansion Vessel

AAV

Flow Setter

Automatic Bypass Valve

Safety Valve

T & P Valve

2 Port Motorised Valve

Automatic Air Vent

P

S

Pressure Gauge Assembly

Tundish

Temperature Sensor

Air Separator

Combined Isolation & Check Valve with Thermometer

Aqua Aqua Stat

Immersion Heater

Room Stat

Programmer

Anti-Gravity Dip

Safety Discharge Vessel

Pump

Pressure Reducing Valve

Isolation Valve

Single Check Valve

Thermostatic Mixing Valve

Double Check Valve

Thermostatic Radiator Valve

Radiator Lock Shield Valve

Filling Loop

Flexible Connection

Flow Meter

Stop Cock

AGD

Key

Part no. 93 900 028 Issue 1

Elsy & Gibbons, Fifers Lane, Norwich, Norfolk NR6 6XB

T: 0844 335 8819

F: 0844 736 5505

E: info@elsonhotwater.co.uk

W: elsonhotwater.co.uk

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you can be sure that your customers are in the very best hands.

Totally committed to quality and safety, heateam is open 7 days

a week, for 363 days a year, and offers:

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Our helpful and qualified specialists are always on hand to help

you with even the most complex technical query.

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Our 280 strong team of specifically trained expert heating

engineers covers the UK, no one is better qualified to look

after Elson’s products for the duration of the guarantee.

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meaning we can repair our appliances on the first visit in

95% of call-outs.

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annual service plans.

Opening Times: Monday-Friday 8am-6pm, weekends and

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Simply call 0844 871 1535 or visit our website at

www.heateam.co.uk

*Excluding Christmas Day and New Year’s Day.

NewDesign is a bespoke design service from the BDR Thermea

Group for residential developments.

Designs for heating and water services systems are fully

indemnified and tailored to suit individual development needs.

Our professional engineers deliver quality system designs in

accordance with:

• Legislationrequirements

• Recognisedgoodpracticestandards

Our design service has been tested and proven by many national

housing developers and our project database contains more than

15,000 house type designs.

Design layouts are generated using the latest computer software

and can be issued in either hard copy or electronic format for ease

of data exchange.

The pace of product development is such that we reserve the right to change product specifications without notice. We do, however, strive to ensure that all information in this catalogue is accurate at the time of publication.