Instantaneous D.H.W. water heaters with storage tank

condensing D.H.W. production

MADE IN ITALY

AGUAplusTM

AISI 316

TiTITANIUM

D.H.W.

100%CONDENSING

5WARRANTY

HEAT EXCHANGER

YEARS

READY

NOx2018

NOxREADY

2018

AGUAplus D.H.W. INSTANTANEOUS CONDENSING WATER HEATERS WITH BUILT-IN STORAGE TANK

HOT WATER FOR MULTIPLE NEEDS

2

AG

UA

plus

TM

floor standingfrom 70 to 140 kW

AGUAplus 70 to 140 kW is the new range of D.H.W. instantaneous condensing high-capacity water heaters with built-in storage tank.

CONDENSING WITH A TITANIUM HEART Designed for “space saving”, AGUAplus water heaters have a vertical layout to optimise space.

Each AGUAplus is composed of 1 or 2 70 kW R.V.C. condensing heat exchangers in stainless steel AISI 316Ti (Titanium).

It can be installed in cascade sequence up to 8 units.

INSTANTANEOUS WITH BUILT-IN STORAGE TANK AGUAplus is the D.H.W. condensing water heater

with rapid reload with built-in 120 litres storage tank and high performances to meet multiple continuous withdrawal needs, without any problems for small withdrawals.

BUILT-IN RECIRCULATING AND ANTI-LIMESCALE PUMP Besides maximising D.H.W. performances, it has an

anti-limescale function to protect the heat exchanger from limescale deposits.

AGUAPLUS IS AVAILABLE IN THE FOLLOWING VERSIONS

70 - 115 - 140 kW

NEWAISI 316

TiTITANIUM

D.H.W.

100%CONDENSING

5WARRANTY

HEAT EXCHANGER

YEARS

BUILT-IN STAINLESS STEEL TANK

The built-in 120 litres storage tank is made with stainless steel, particularly resistant to corrosion. The storage tank is provided with electronic anodic protection and high-quality polyurethane thermal insulation.

COSMOMIX PREMIXAND FECRALLOY BURNER

The premix burner is made with spacial metal fibre “Fecralloy” which

spreads short and perfectly nourished flames. Thanks to Cosmomix,

the air/gas ratio is constant in each point of turndown of the burner:

this reduces polluting emissions and optimises efficiency.

NO IGNITIONS DURING SMALL WITHDRAWALS - The built-in 120 litres storage tank prevents using energy for small water withdrawals - Energy saving

ECO-FRIENDLY AND VALUE-FOR-MONEY - Condensing technology allows saving up to 30% on consumption

D.H.W. CONTINUOUS - Instantaneous D.H.W. supply - Quick recovery times - D.H.W. always available

D.H.W. “ON DEMAND” - Only heat D.H.W. actually necessary - Energy saving

REDUCED SPACE - Compact - Only 0.42 m2 floor dimensions

3

ACIDITY NEUTRALIZER

To significantly reduce the acidity of condensing water, each AGUAplus instantaneous water heater is standard equipped with a condensate acidity neutraliser, specifically sized to restore tolerable pH values.

ANTI-LIMESCALERECIRCULATING PUMP

The recirculating pump not only allows to load the water storage tank but also prevents the formation of limescale on the heat exchanger surface, which thus maintains its high performances throughout its life cycle.

BUILT-IN FLUEBACK PREVENTER

A flue back preventer has been installed on the combustion circuit on each AGUAplus water heater as standard equipment, to prevent possible flue gas recirculation between different exchangers.

CONDENSATE BLOCKED DRAIN SWITCH

A special inner condensate cup collects condensate and makes it flow freely to

the drain; a condensate level sensor blocks the boiler when the condensate level is above the permitted threshold.

STANDARD AIR FILTER

AGUAplus is equipped with a standard air filter to protect the

burner, combustion chamber and heat exchanger from dust and impurities,

ensuring enhanced efficiency.

AGUAplusTM

STANDARD DETAILSTHAT MAKE THE DIFFERENCE

A HEART OF TITANIUM

PATENTED AISI 316 Ti (TITANIUM) STAINLESS STEEL R.V.C. PRIMARY HEAT EXCHANGER

PATENTED EXCLUSIVE DESIGN - R.V.C. heat exchanger, heart of AGUAplus system, is the result of research and intensive testing together with Cosmogas experience that, for 50 years, has been designing and patented heating and domestic hot water production systems.

EXCEPTIONAL RESISTANCE AGAINST CORROSION - The 3 series of AISI 316 Ti (TITANIUM) stainless steel round tubes, which the R.V.C. heat exchanger is made of, are fasten without weld joints to keep stainless steel characteristics unaltered and to grant the highest resistance against corrosion from mains water that sometimes contains a high percentage of chlorine, necessary for the purifying treatment.

HIGH EFFICIENCY - R.V.C. has been designed to reach an optimal exchange along the entire length of the exchanger and to grant an exceptional efficiency up to 106% with savings up to 30%.

44

R.V.C. - TECHNOLOGYMADE IN COSMOGAS

The R.V.C. heat exchanger is made of 3 series of round tubes (18 and 16 mm diameter), to avoid clogging and to grant: LARGE WATER FLOW GREAT EXCHANGE SURFACE LOW PRESSURE DROPS HIGH WORKING PRESSURE

THE ONLY PRIMARY HEAT EXCHANGER ABLETO WORK IN DIRECT CONTACT WITHMAINS WATER

Cosmogas is the only manufacturer who can offer a Titanium primary heat exchanger that can be directly supplied by mains water guaranteeing a great resistance to the corrosion and the aggressiveness of chlorinated waters.Thanks to low inlet temperatures the R.V.C. exalts the condensing effect and supplies D.H.W. even at high temperatures, maximizing savings and reducing to minimum the thermal inertia

The “variable” circulation of the fluid allows a flue gas/water upstream thermal exchange, this sets up a high efficiency that quickly leads to flue gas condensing. During the operating, input cold water is distributed on Ø16 and Ø18 mm round tubes series. The advantage of such a system is to utilise the condensing effect and get better outputs.

COSMOMIXPATENTEDPREMIX SYSTEM

The innovating premix system employed in AGUAplus condensing commercial water heaters allows an exceptional turndown ratio of 1:10.

ECOLOGICPREMIXBURNER

Ecologic premix commercial water heaters have a constant air/gas ratio in each point of the turndown range of the burner, decreasing polluting emissions and optimising efficiency. The premix burner is made of “Fecralloy” a special metal fibre and has a round shape.Cosmogas ecologic premix burner spreads short and perfectly nourished flames.

ADVANTAGES: High-efficiency combustion Low polluting emissions

(CO<15 ppm and NOx<26 mg/kWh) Natural gas and LPG operating

BURNERPREMIXBURNERPREMIX

5

AGUAplusTM

5

COSMOGAS SYSTEM WORKS ALWAYS IN CONDENSING MODE

6

STANDARD ANTI-LIMESCALEVARIABLE RECIRCULATING PUMP

To maintain the maximum efficiency of AGUAplus water heater it is fundamental to guarantee a certain

speed of the inlet water inside the R.V.C. heat exchanger. To assure this AGUAplus is standard equipped with an inverter recirculating pump that regulates the correct water flow according to inlet water hardness thanks to its anti-limescale function.

Recoverytimes (min)

7.27.27.27.24.44.44.44.4

D.H.W.temperature (°C)

405060704050607040506070

water supply l/min (storage tank 70°C)

493370296247

827621496414

1162 1496871 1122697581

898748

183113731098915

10 min. 20 min. 30 min. 40 min. 50 min. 60 min.21651624 12991083

687515412343

1236927742618

1785 23351339 17511071893

14011167

2884216317311442

794596476397

14631097878731

2132 28011599 210112791066

16801400

3470260220821735

34342575206017174138310424832069

ContinuousD.H.W. (l/min)

33.425.120.116.754.941.233.027.566.950.240.133.4

3.63.63.63.6

Cold water inlet (°C)MODEL

10°CAGUAplus

70

10°CAGUAplus

115

10°CAGUAplus

140

STANDARD CONDENSATEACIDITY NEUTRALIZER

Condensing water produced during the combustion process react to combustion products turning into acid water. To put down acidity, each AGUAplus

commercial water heater is standard equipped with a condensate acidity neutralizer, sized to restore the pH to tolerable values

Content: 10 kg of limestone

AGUAPLUS:QUICK RECOVERY TIMES

AGUAplus ensures quick recovery times which make the product ideal to meet D.H.W. needs of installations with low peak demands and high continuous withdrawals, such as:

Canteens Restaurants Industrial and business applications

CONDENSING D.H.W.THE ACTUAL ENERGY SAVER

New energy saving legislation and modern residential and commercial building insulation techniques, have significantly reduced heating needs, and it’s going to decrease. With the diffusion of high performance showers, cascade showers, Jacuzzis, wellness and fitness centres, hot water usage is increasing as much as fuel consumption for its production. If we consider that hot water is used 365 days a year and at all latitudes, to save upon hot water production has become a priority, above all in tertiary sector with high water needs.

AGUAplusTM

7

STANDARD BUILT-INFLUE BACK PREVENTER

Each burner, inside AGUAplus, has been standard equipped with a flue back preventer, on the

combustion circuit, to prevent the possible flue gas recirculation among different exchangers, in case of cascade sequence installations.

STANDARD ADJUSTABLE FEETFOR PROPER ALIGNMENT

AGUAplus is equipped with a series of adjustable feet for proper alignment of the commercial water heater. The height of the feet varies from 0 to 10 mm.

ACQUACALDA.TECH - THE CALCULATING SYSTEMFOR REAL D.H.W. NEEDS

Cosmogas has set acquacalda.tech a program to calculate the real hot water needs both for the domestic that for the tertiary sector.A useful work tool for technicians and a valuable support to designers, to define domestic hot water specific needs to each user such as hotels, camping sites, apartment buildings, gymnasiums, football fields.

Based upon the legislation: UNI 9182 - hot and cold water supply and distribution installations - design, installation and testing - the software binds the legislation to the experience of Cosmogas that has been handling with D.H.W. for 50 years.

The application acquacalda.tech is not a simple product configurator, but a real work tool that determines the real hot water needs in most demanding users.In fact the software, after calculating the needs for different users, selects the most suitable Cosmogas Solution.

To speed up and optimise the drafting of estimates and tendering specifications of Cosmogas products, it provides: Technical report Tendering specifications Installation schemes in dwg format Installation schemes in pdf format

NEW

EXAMPLES OF APPLICATION

COVER BOX PLUSSAFE AGAINST BAD WEATHER

AGUAplus is available for outdoor installation with the additional COVER BOX PLUS, the anodised aluminium weather-resistant cover. Its reduced size and elegant design make it easy to place. Fireproof, with IP X5D protection.

IT GETS THROUGH A65 cm WIDE DOOR

AGUAplus is the best balance between power, weight and size. Being extremely compact, it gets through a

65 cm wide door and allows easy access into thermal power plant. Its light weight makes it easy-to-handle even in case of difficult installations.

with module 0-10Vavailable as optional

to connect the remote control

885IF Interface

EASYMAINTENANCE

AGUAplus has been designed with a front access to all inner components for easy maintenance. AGUAplus features uniformity of functions and components, for quick maintenance and reduced management costs.

STANDARD INSTANTANEOUS SYSTEM INSTANTANEOUS SYSTEM WITH SOLAR PRE-HEATING

8

AGUAplusTM

9

AGUAPLUS

1 - D.H.W. supply 1” 1/2 2 - Cold water inlet 1” 1/2 3 - Air intake Ø80 mm (AGUAplus 70) Ø110 mm (AGUAplus 115 - 140)

4 - Flue gas outlet Ø80 mm (AGUAplus 70) Ø110 mm (AGUAplus 115 - 140)5 - Gas inlet 1”6 - Recirculating pump

7 - Condensate drain Ø28 mm

Independent instantaneous condensing D.H.W. heater, with built-in storage tank, for indoor installation, type COSMOGAS AGUAPLUS.- R.V.C. water tubes heat exchangers made of AISI 316 Ti (Titanium)

stainless steel, without weld joints with variable radial circulation. - Working pressure up to 6 bar.- Built-in insulated storage tank up to 120 litres.- Water heater layout: vertical 1815 mm, floor dimensions 600 x 700 mm.- Maximum heat output = _____________ kW- Minimum heat output = _____________ kW- Maximum heat input = ___________ kW- Minimum heat input = ___________ kW- Efficiency at 100% full load = 98%.- Efficiency at minimum heat output = 106%.- Forced draught.- Patented air/gas ratio and combustion control.- Ecologic total modulation premix burner made of metal fibre.- II2H3P category (natural or LP gas operation).- Turndown ratio = 1:10- Compliant with class 6, the most eco-friendly, of the UNI EN 15502

standards (low emissions of nitrogen oxides (NOx) = 26 mg/kWh carbon monoxide (CO) = 15 p.p.m.).

- Electronic ignition and ionization flame control.- Electronic modulating fan, total modulation of the flame and P.I.D.

temperature control.- Modulating pneumatic gas valve.- Upper limit water and flue gas supply temperature switch.- Supply temperature range 20-80°C.- Antifreeze device.- Anti-smell siphon for condensate drain complete with flexible hose.- Water heater water pressure switch.- Water flow meter.- Drain cock.- Power supply = 230 V, 50 Hz.- Bipolar main power switch.- Electric protection rating = IP 20.- Antifreeze device.- Visualization of supply, water heater, boiler temperature, auto-

diagnostic of all components and functions and PC serial connection for diagnostic.

- Backlit digital display.- Remote control connection interface.- Black painted plate casing complete with window to access

condensate acidity neutraliser (standard).

AGUAplusTENDERING SPECIFICATIONS

SIZE ANDCONNECTIONS

TECHNICALDATA

10

AGUAPLUS TECHNICAL DATA UM 70 115 140

Type (Flue exhaust/air intake type) B23; B23P

Category II2H3P II2H3P II2H3P

CE-type Certificate (PIN) 0476CR1272 0476CR1272 0476CR1272

Range Rated Certificate APPROVED APPROVED APPROVED

Minimum/Maximum heat capacity (PCI) kW 14.7/69.9 12.0/115.6 14.7/140.0

Max output heat kW 67.9 111.7 135.8

Efficiency at 100% load % 97 97 97

Minimum output heat (50/30) kW 15.6 12.8 15.6

Efficiency at minimum output heat (50/30) % 106 106 106

Chimney loss burner on/off % 1/0.1 1/0.1 1/0.1

Chimney loss burner on at minimum output heat % 0.5 0.5 0.5

Casing loss burner on/off % 0.1/0.05 0.1/0.05 0.1/0.05

Loss at no load % 0.05 0.05 0.05

Gas flow rateG20/G25 m3/h 7.40/8.61 12.22/14.22 14.80/17.22

G30/G31 kg/h 5.52/5.43 9.11/8.97 11.03/10.87

Gas supply pressureG20/G25 mbar 20/25 20/25 20/25

G30/G31 mbar 30/37 30/37 30/37

Gas supply minimum/maximum pressure G20 mbar 10/45 10/45 10/45

Main exchanger water content l 7.57 12.68 15.14

Minimum operating water flow rate l/h 0 0 0

D.H.W. adjustment range °C 20 - 80 20 - 80 20 - 80

Maximum temperature for safety intervention °C 95 95 95

Minimum/Maximum water pressure bar 1/11 1/11 1/11

Rated power supply voltage/frequency V/Hz 230/50 230/50 230/50

Absorbed electrical power W 472 542 622

Degree of electrical protection IP20 IP20 IP20

Degree of electrical protection with outdoor covering IPX5D IPX5D IPX5D

Air intake and flue exhaust duct diameter (split) mm 80 110 110

Max. flue exhaust/air intake duct length (split) m 10/10 10/10 10/10

Equivalent length of one curve m 4 4 4

Weighted CO (0% O2) G20 ppm 15 15 15

Weighted NOx (0% O2) (EN 483 and 297 class 5) G20 ppm 15 15 15

CO2 (%) at minimum / maximum output heat

G20 % 8.5/8.7 8.5/8.7 8.5/8.7

G25 % 8.3/8.8 8.3/8.8 8.3/8.8

G30 % 10.1/10.6 10.1/10.6 10.1/10.6

G31 % 9.8/10.2 9.8/10.2 9.8/10.2

O2 (%) at minimum / maximum output heat

G20 % 5.8/4.9 5.8/4.9 5.8/4.9

G25 % 5.8/4.9 5.8/4.9 5.8/4.9

G30 % 5.9/5.1 5.9/5.1 5.9/5.1

G31 % 6.0/5.4 6.0/5.4 6.0/5.4

Maximum flue gas recirculation in case of wind % 10 10 10

Minimum/Maximum flue gas temperature at appliance outlet °C 30/90 30/90 30/90

Δt temperature fumes/Return (at 100% of the load) (80/60) °C 17 16 17

Δt temperature fumes/Return (at 30% of the load) (37/30) °C 1 1 1

Flue gas mass flow rate kg/h 115 190 230

Flue gas mass flow rate at minimum output heat kg/h 25.4 20.7 25.4

Head available at exhaust Pa 110 110 110

Maximum combustion air temperature °C 40 40 40

Maximum CO2 content in combustion air % 0.9 0.9 0.9

Maximum over-heating flue gas temperature °C 92 92 92

Max. admissible vacuum in the flue exhaust/intake system Pa 50 50 50

Maximum condensate flow rate l/h 8.7 14.4 17.4

Condensate average degree of acidity PH 4 4 4

Ambient operating temperature °C 0 ; + 50 0 ; + 50 0 ; + 50

Weight of the appliance empty (in operation) kg 180 (312) 218 (350) 218 (350)

Water content of the built-in hot water tank l 120 120 120

AGUAplusTM

11

SAFETY KIT COMPLETE WITH SAFETY DEVICES ON DEMAND

Each AGUAplus gas condensing water heater can be equipped on demand with:

AISI 316L stainless steel safety kit complete with shut-off gas valve (suitable for D.H.W.)

A - D.H.W. supply 1"1/2 B - Gas inlet 1" C - Cold water inlet 1"1/2

D - Condensate drain Ø28 mm E - Safety kit complete with shut-off

valve

E

STAINLESS

STEELAISI 316L

A

C

B

D

ERPPRODUCT FICHE

(a) Supplier’s name or trade mark COSMOGAS

(b) Supplier’s model identifierAGUAPLUS

70 115 140

(c) Load profile XXL 3XL 3XL

(d) Water heating energy efficiency class A N/A N/A

(e) Water heating energy efficiency ηwh % 85,1 86,0 85,6

(f) Daily electricity consumption Qelec kWh 0,55 0,71 0,75

(f) Annual electricity consumption AEC kWh 120 156 165

(f) Daily fuel consumption Qfuel kWh 24,721 47,372 47,478

(f) Annual fuel consumption AFC GJ 22 42 42

(g) Other load profiles - - -

(g) Water heating energy efficiency * % - - -

(g) Daily electricity consumption * kWh - - -

(g) Annual electricity consumption * kWh - - -

(g) Daily fuel consumption * kWh - - -

(g) Annual fuel consumption * GJ - - -

(h) Thermostat temperature settings of the water heater °C 60 60 60

(i) Sound power level indoors LWA dB 66 70 70

(j) The water heater is able to work only during off-peak hours NO NO NO

(k) Any specific precautions that shall be taken when the water heater is assembled, installed or maintained.

Read the installation, use and maintenance manual of the water heater.

(l) Smart control N/A N/A N/A

Emissions of nitrogen oxides NOx mg/kWh 26 26 26

According to commission delegated regulation (EU) No 812/2013 and No 814/2013;* Refers to other load profiles (g);N/A = Not applicable;

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COSMOGAS srlVia L. da Vinci, 16 • 47014 MELDOLA (FC) ITALYTel. +39 0543.49.83.70 • Fax +39 0543.49.83.92www.cosmogas.com • info@cosmogas.com

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