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No. zero


The market is becoming more oriented in finding efficient and innovative heating solutions, therefore the boiler becomes the cornerstone of a complete integrated system to optimize efficiency, paying special attention to reduce fuel consumption and pollutant emissions, ensuring the most comfort. So technical expertise and highly professional advice become essential to a proper approach towards these new market requirements. Thanks to a strong partnership with the leading experts in heating systems, in Italy and around the world, Baxi presents a new project that begins with this “No. zero� of Systeminfo, a collection of significant works in new buildings and renovations with new technologies, systems and high-power condensing boilers and heat boxes. Each project will be accompanied by descriptions, images and layout of the system.

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Index Energy saving in Sarajevo Sarajevo (Bosnia)

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Condensing solutions for South America Santiago (Chile)

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Smart comfort from the Sun Pietra Ligure (SV) – Italy

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Baxi commercial boilers build greener community Biddeford - Maine (U.S.A.)

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Ormond College - Student Accommodation Melbourne (Australia)

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Castle in Letná Park Prague, Letenské sady (Czech Republic)

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Hungarian Partner’s premises Cegled (Hungary)

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Heat below 0°C Appiano sulla Strada del Vino (BZ) – Italy

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Serbian Emabssy in Hugary Budapest (Hungary)

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Baxi integrated conditioning Busto Arsizio (VA) – Italy

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Other references around the world

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Close examination Solar Wizard

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Energy saving in Sarajevo Building New residential and commercial building Location Sarajevo (Bosnia) Flats 176 Flats surface 50-90 m² Levels 5 Stairwells 5 independent blocks

System data Importer: EGW Project: EGW Power supply: 1350 kW Heat generator: 9 x BAXI POWER HT 1.1500 Thermal plant: dedicated site on the top of the building Flue: single flue pipe for each boiler User’s management system: Luna SAT RPS heat boxes for heating and DHW production Distribution: 5 risers Risers temperature: 70°C Heating terminals: aluminium radiators Renewables: hot spring (80°C)

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Sani Grand City is a recently erected building, located near

(176) the coefficient was at first estimated about 30%, but

the thermal district of Ilid탑a in Sarajevo (Bosnia).

it has been reduced for the hot spring integration and the client has chosen for the plant a lower coefficient of 11%. The result was a power supply of 1350 kW (instead of the 900 kW for the heat boxes for heating account only). The total thermal load of the building has led to the choice of a heat generator made of 9 condensing boilers with a heating output of 150 kW each. Due to the high numbers of installed boilers and the consequent length of the primary circuit flow/return manifolds, it has been realized a hydraulic circuit with inverted return, to avoid not balanced flows and boilers working with a flow lower that the minimum to dispose the burner power. As mentioned, the heat boxes had to be provided with plate exchangers to DHW production. Moreover, due to the plant size and the distribution network growth, it has been chosen a heat box with integrated pump, to help the system balance and to contain the expenses for the booster pumps of the 5

At the ground floor there is a shopping center, on which the

risers. The choice has been to install Baxi Luna SAT RSP.

residential part is located. The flats are placed on 5 levels with a central court. The thermal plant described serves the

Concerning the collection and transmission of consumption

residential part of the building.

data, the client has decided to realize a wireless network, since already adopted in a similar system, realized the

The first offer, during the budgeting in close collaboration with the client, was to install a pure centralized system, with DHW production with tanks and heat boxes only for heating accounting, to contain the thermal power need. Since the municipality had allowed to exploit the near hot spring for integration of the energetic need, by means of plate exchangers, and the choice of aluminium radiators as heating terminals, the client has chosen an easier system solution with the generation of a single high temperature heating fluid (70째C) to satisfy both the heating and DHW production requirements (the domestic hot water is produced with the plate exchangers integrated in the heat boxes). As a consequence it has been necessary to calculate an adequate contemporaneity coefficient for the DHW, in order to avoid the oversizing of the generator and the distribution network diameters. Due to the number of flats

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previous year in the sky resort of Bjelasnica, with very good results. To grant the transmission, 11 aerials each floor and a further aerial near the porter’s office with a serial connection, which does the consumption data download.

In the end, even if the heat boxes were not a new issue for the client, the realization of such a system assumes very close evaluation. 2 years later the first ignition (during this period, the heat boxes have always been monitored by the client), the solution is reliable and economically in line with the fixed energy saving goals.

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Condensing solutions for South America Building New residential building Location Macul district – Santiago (Chile) Flats 248 Flats surface 60-120 m² Levels 26

System data Importer: Anwo Chile Project: Climatermic S.A. – Anwo Chile Installation: Climatermic S.A. Power supply: 1350 kW Heat generator: 9 x BAXI POWER HT 1.1500 Thermal plant: dedicated site on the top of the building Flue: single flue pipe for each boiler User’s management system: zones valve connected to room thermostats Distribution: 2 risers Risers temperature: 60°C Heating terminals: radiators Renewables: none

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Parque Ñuñoa in a recently erected building, located in the

value of the static pressure in the 2 parts of each raiser is

elegant residential area of Macul in Santiago (Chile).

not higher than 5 bars. An average thermal need of 5,5 kW is expected for each flat, so the total need was about 1350 kW. The thermal load calculated has led to the choice of 9 floor standing condensing boilers in cascade with 150 kW heating power. The client has adopted such a power share to maximize the average seasonal performance. Given the mild weather, to reach this goal, it is very important the minimum value of the boilers modulation range. Furthermore, with this kind of system solution, the risk of lack of performance, in case of arrest of one or more boilers.

The primary manifold and the hydraulic circuit breaker have been sized and realized “ad hoc” in the construction yard. Due to the high numbers of installed boilers and the consequent length of the primary circuit flow/return manifolds, also in this case, it has been realized a hydraulic circuit with inverted return, to avoid not balanced flows

It is a valuable building for a medium-high target (the structure has a 4000 m2 with a swimming pool). The contractor company, following the growing trend of pollution reduction and energy saving, has chosen (first between all competitors) a system solution with condensing boilers in cascade. This choice has led the 95% of the flats to be sold within 100 days, despite the market tendency to prefer horizontal houses after the earthquake of February 2010.

The system solution is a centralized heating system, with DHW production with tanks located at the ground floor, for safety reasons in case of earthquakes, since the thermal plant is on the top of the building (27° floor). As for the hydraulic scheme, from the thermal plant, besides the DHW circuit, come 2 raisers of the heating circuit, which are sectioned in correspondence of the 9° floor with a plate

and boilers working with a flow lower that the minimum to

exchanger feeding the underlying heating circuit, due to the

dispose the burner power.

height of the building (and the high static pressure there would be in the heating terminals of the lower floors). The

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The distribution in the flats is done by means of zones valves controlled by the room thermostat of the flat itself. The energy consumption is represented for each user with 2 volumetric meters (heating and DHW consumption).

In the end, for the Chilean market, this is one of the most innovative system realized so far. It is and will be the object of a close analysis of the client regarding the annual energy saving. Furthermore the thermal plant here presented has began the reference point in similar systems planning in the metropolitan area of Santiago.

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Smart comfort from the Sun Building Hotel and residence Location Pietra Ligure (SV) – Italy Accommodations 60 rooms and about 129 beds

Old system information Floor standing boiler: 240 kW (open flue gas boiler) Plate heat exchanger: 250 kW

New solar system information N° of solar systems: 2 Solar system 1: Solar collectors: 18 SB 25 solar collectors (2,5 mq/each) Installation: flat roof installation with 30° slope, horizontal mounting Solar tank: 3 enamelled single coil solar tanks, 1000 litres capacity/each Solar circulation group: 2 multipled solar circulation groups, with Comfort regulation Solar pipes diameter: Øe. 35 mm, Øi. 32 mm stainless steel main pipes Solar system 2: Solar collectors: 14 SB 25 solar collectors (2,5 mq/each) Installation: flat roof installation with 30° slope, horizontal mounting Solar tank: 2 double coil solar tanks, 1000 litres capacity/each Solar circulation group: 2 multipled solar circulation groups, with Comfort regulation Solar pipes diameter: Øe. 28 mm, Øi. 25 mm stainless steel main pipes

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It is a accommodation facilities complex consisting of a

New system

Residence and a Hotel with 33 and 27 rooms, for a total of

As said, the increased DHW requirement has led to the

129 beds.

installation of a solar system, to integrate the existing 240 kW boiler. To ensure the installation of an adequate number of collectors, avoiding for lack of space of mounting them of the roof, a dedicated structure have been planned on the ground. The collectors have been installed on the flat cover of the parking area in between the 2 buildings. The collectors have been mounted horizontally with in rows of 2 with a multiple connection. The installation is 30° slope with an orientation close to south, values that optimize the summer functioning of the solar plant. The horizontal mounting has reduced the shadows between the collectors and the installation of a bigger number. The structure, besides being an anchor for the panels, is a further benefit for the customers that can use covered parking place. Due to the dimensions of the solar system, it has been cut in 2 parts, to optimize the hydraulic and electrical functioning.

The 2 buildings are 50 m distance and are served with

The 2 parts have a multiple connection, and, to maximize

the same system for the DHW production. The complex is

the efficiency and to help a bigger thermal exchange during

opened only during the summer season, so it requires only

spring ad autumn, in the plant with 14 collectors and 2 tanks,

DHW production from the centralized system.

the 2 internal exchangers have a serial connection to reach a

Old system The existing plant was made of a single boiler installed in a dedicated room. This heat generator provided the DHW production with a plate exchanger. The decision of enlarging the accommodations and the consequent increase of DHW need, required the installation of a solar system to integrate the existing plant, with prewarming function. Very important in this evaluation was the necessity of containing the heat generator power and the gas consumption. To grant users’ comfort 2 recycling systems, one for each building, with independent supplying have been employed. In this way, the plant is able to supply DHW in a brief time in any moment of the day.

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thermal exchange power of about 105 kW. The management

system does not satisfy the primary energy requirement for

of the solar system flows have been grant by means of 2

DHW production, a diverter valve directs the pre-warmed

circulation groups with multiple connection, in order to win

water through the plate exchanger feed by the boiler. The

the head losses (localizzate e distribuite) of the solar plant.

boiler integrates the heat need to get DHW at the desired

A precise sizing of the main pipes of 35/32 mm and 28/25 mm and the secondary (interrate) pipes of 22/20 mm, has allowed to contain the head losses and to gain an adequate speed for the correct system working. To have a correct heating fluid flow for the functioning, every solar circulating group have been set to the highest speed in the working range. The solar controller allows the electric management of the circuit, controlling the functioning and with electrical losses reduction, since it makes the fluid circulating only if the collectors are able to exchange a minimum value of solar energy. On the controller have been activated also the protection and cooling functions to protect from temperature peaks, which are very brief due to the DHW requirement. To

temperature at any moment. Every recirculating system is

have an uniform distribution of the head losses related

supplied with another diverter valve, that directs the water

to the project flow of 30 l hour/m2 collector, due to the

of the recycle circuit through the exchanger or the tanks,

distance between the collectors and the tanks. If the solar

depending on the temperature of the return and of the solar tank storage.

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The thermal power of the solar system is about 60 kW. During 5 months opening, expected data are: •

Energy from the solar plan for DHW production: 40 MWh

Energy from the boiler for integration:

Gas saving:

CO2 emissions avoided: 12.000 kg

System efficiency:

18 MWh

4500 m3

50%

Real data, coming from bills of the relevant period, are: •

Opening days:

150/year (5 months)

Saving in the bill with reference to the old system: 3500 €/year (5 months)

Thanks to the centralized solar plant installation, the structure has had a saving for seasonal energy expenses of about 30% with reference to the previous year.

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HOTEL Miriam (Savona) Old thermal system

EXISTING BOILER 240 KW

regolazione

FROM WATER DISTRIBUTION NETWORK

thermostatic mixer

thermostatic mixer

RESIDENCE

recirulation

cold water

hot water

HOTEL

recirulation

cold water

hot water

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A

SOLAR PANELS

DHW to plate exchanger

T

DISTRIBUTION COLLECTOR • •• •••••

T

M

M

CIRCULATING GROUP

NOTE: THE FLOW/RETURN PIPES FROM COLLECTOR TO TANKS MUST BE SAME LENGTH

FROM RECIRCULATION

28x25

35x32

•• • • • •• • • ••• •• ••• •• •• •• ••• • •• ••• •• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

T

B

•• • • • •• • • ••• •• ••• •• •• •• ••• • •• ••• •• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

CIRCULATING GROUP

T

C DISTRIBUTION COLLECTOR • •• •••••

•• • • • •• • • ••• •• ••• •• •• •• ••• • •• ••• •• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

D

NOTE: THE FLOW/RETURN PIPES FROM COLLECTOR TO TANKS MUST BE SAME LENGTH

•• • • • •• • • ••• •• ••• •• •• •• ••• • •• ••• •• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

C

D

FROM WATER DISTRIBUTION NETWORK

THERMAL PLANT

Solar system scheme

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Baxi commercial boilers build greener community Building City Hall - City Theatre Location Biddeford - Maine (U.S.A.)

System data Importer: Marathon Industries LTD Heat generator: 5 x Luna HT 1.650 kW Thermal plant: dedicated room in the basement Heating power requirement: 325 kW (peak) Purpose: energy saving through replacement of the old boiler

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Old system of the City Hall and City Theatre

New system of the City Hall

In 2005, when the 110-year-old Biddeford City Hall, and the City Theatre as well the the Ice Arena’s, each needed new heating systems, following the recommendation of a board’s member, City Council approved the installation of Baxi Luna HT 1.65 commercial boilers in the facilities. The investment in the greener and more efficient Baxi heating solution paid off immediately, with annual fuel bill reductions of 50% fuel at City Hall and City Theater, and 30% less at the arena. The City also saved $20,000 a year previously needed to maintain the old system, and found that employee absenteeism had dropped dramatically with the high efficiency and environmentally sound heating system. In fact, the monthly oil bills used to be much as $5,000 for City Hall and City Theatre, while the natural gas bill has not exceeded $1,200 over the past years.

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Ormond College - Student accommodation Building Student accomodation (330 rooms) Use College dorm and Teachers’ offices Location Melbourne (Australia)

System data Importer: HYDROHEAT SUPPLIES PTY LTD Project: arch. Joseph Reed Heating power requirement : 600 kW (peak) Heat generator: 4 x BAXI POWER HT 1.1500 Thermal plant: dedicated site in the building Heating/DHW production: heating only Heating terminals: radiators

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radiators throughout. Not only in bedrooms, but also offices, hallways and the Grand dining room were fitted with hydronic heating panels. Over the years the boiler has been upgraded from oil to gas. In 2010 the single Natural Gas atmospheric 600kW boiler was replaced by 4 x 150kW BAXI Power HT condensing boilers in cascade. The College embraced the idea of the cascade installation knowing that a cold night at any time of the year is of the past. The heating plant now will always have a minimum of 75% capacity when one of the boilers requires maintenance. The contractor installed the cascade installation as per BAXI’s recommendations, each boiler has a primary pump which circulate the system water through the hydraulic manifold and separator. The cascade is controlled via the temperature regulator for cascade systems (RVA47) with an outdoor sensor Ormond College occupies 10 acres of land adjoining the set at 21° C with a night set back. The system starts operating University of Melbourne. The land was allocated to the on the 1th of May and switches off on the 1st of November Presbyterian Church by the University in 1853 for the (Southern Hemisphere). All radiators have a thermostatic head establishment of a residential college ‘of and within the except for the common hallways. It is a very simple but reliable University of Melbourne’, and under the auspices of the system. Church. However, it was not until 1877 that the Church, with Alexander Morrison Headmaster of Scotch College, convened a committee to plan for the establishment of the College. The architect was the renowned Joseph Reed, designer of many of Melbourne’s important public buildings, and the brief was to create a striking and elegant College that would be a lasting and significant landmark in Melbourne. Indeed the building is of a magnificent neo-gothic architecture and the paddocks have changed in to extensive gardens to provide a unique backdrop for formal and informal functions. The College houses 330 single student style bedrooms. These facilities are used by interstate and foreign students during the year. In summer time when everyone goes home, visitors are most welcome to stay whilst visiting Melbourne.

The existing heating of the college dates from the 1950’s where a central single internal boiler was installed with

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For the flue we used 100mm Stainless Steel for each boiler. The contractor was able to use the same roof penetration from the old boiler. (The diameter of the hole was 760mm) From the data of the energy used of the last two winters the cascade system resulted in a drop in the gas consumption.

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SIEMENS RVA 47

OPTIONAL QAC34 OUTDOOR SENSOR

SEWER

SEQUENCE CONTROLLER

TO SYSTEM RETURN

OPTIONAL QAD21 RETURN TEMERATURE SENSOR

DRAWN: 17/11/08 BY: IVAN KARAULA

EXAMPLE OF 2-12 POWER HT FLOOR STANDING CONDENSING BOILERS IN CASCADE

COLD FEED

R.P.Z.

Expansion system

Condensation drain to be run in P.V.C.

Hydraulic separator

TO WASTE

FUNNEL

HHS

DOSING POT

QAD21 FLOW TEMPERATURE SENSOR

HYDROHEAT SUPPLIES PTY LTD P.O. BOX 1045 / 6 Helen Kob Drive Braeside, Victoria, 3195 Ph 03 9588 1299 Fax 03 9588 2199 www.hydroheat.com.au

www.hydroheat.com.au

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Castle in Letná Park Building Four Restaurants – Castle Location Prague, Letenské sady (Czech Republic)

System data New system: heating system renovation in 2006 Purpose: energy saving and the old system exceeded the emissions limit Heat generator: 3 x BAXI LUNA HT 1.650 Thermal plant: dedicated site on the top of the building System: heating only Zone: a mixing zone and an air conditioning zone

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Hungarian Partner’s premises Building Commercial building Location Cegled (Hungary) Levels 3 levels of 220 m2 each

System data Boiler: Luna HT Residential 1.450 and biomass (pellet) boiler Tank: DHW double coil UB 300 DC storage tank Low temperature zones: 3 High temperature zone: 1 Fan coil heating circuit : 1 Solar system: Solar collectors: 18 SB 25 collectors Installation: flat roof installation with 45° slope, vertical mounting, facing South Solar tank: 2 single coil UBPU 1500 storage tanks Solar circulation group: 2 solar circulation group, one of them with Comfort controller

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The building has 3 levels, each of them is 220 m2, of which

each floor), and many heating/cooling zones nearly equal

actually 2 floors are used. Length of the building is 21 metre

to the number of rooms. Each one of the 3 heating zones

and faces to south-west direction. Other side of the building

are controlled by temperature regulator for mixing systems

is built next to the warehouse. It’s made of burnt bricks

(RVA46 controller), while the ceiling heating/cooling zones are

(Wienerberger Porotherm 30 cm + heat insulation 15 cm).

controlled with regulators, which can be turned to heating/

The calculated heat loss is 30kW. The used temperature

cooling mode. The cooling system can reach 15°C-18°C cold

step is 40/30˚C. The first floor level houses the commercial

water, in summer.

department (sales, purchasers, storekeepers). On the second

The wood boiler directly charges the UBPU 1500 puffer

floor level are placed the accounting, executive offices.

storage tank.

Solar system strategy: Speaking about solar system controller, DHW storage tank has the priority on solar system: if its temperature is higher then the set value the controller turns the diverter valve to charge the second UBPT storage tank (1500 l puffer storage).

The system serves two different purposes: heating and cooling. It is planned to use different kind of heat energy including fossil and renewable. On first floor a wood heating boiler is placed, which is heated with dropouts wood packaging (disposable pallets). A gas boiler, DHW storage tank and two puffer storage tanks are located on the second floor. On the flat roof, there are 3 rows of 6 solar panels in serial connection, facing directly south (installed with 45° slope). 80% of DHW requirement is produced by the solar plant. The

Gas boiler strategy:

working hours of the Comfort controller for DHW storage tank

There is a boiler interface for climatic regulators (OCI 420)

is 2578 hours (max temperature 72°C), for the puffer tanks is

in the gas boiler’s control panel, to receive exact heating

2250 hours. (collector max temperature is 110,4°C.)

value needs. The gas boiler starts working if the storage tank

The heating system consists of 3 heating zones (one for

heating value is not enough to fulfil the heating requirements

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which is calculated by a controller linked to temperature regulator for mixing systems (RVA 46) by DATA bus connection (MD-DB port).

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-

-

18 x BAXI SB25 collectors with flat roof fixings 2 x UBPU 1500 storage tanks 2 x solar hydraulic group (one of them Comfort controller) 1 x LUNA HT RESIDENTIAL 1.450 1 x UB 300 DC DHW storage tank 1 x wood fire boiler 3 low temperature zones 1 high temperature zone 1 fan coil heating circuit

fan coils


Heat below 0°C Building Sport center – Ice rink Location Appiano sulla Strada del Vino (BZ) – Italy

System data Project: Ladurner G. Thermotechnik Installation: Frei & Runggaldier Commissioning: City of Appiano Sulla Strada del Vino (BZ) Heat generator: Maximum output: Minimum output: Average efficiency (DIN 4702-T8): NOx class: Kind of fuel:

3 x BAXI POWER HT 1.1500 450 kW (150 kWx3) 40,4 kW 109,8% (one boiler) 5 Natural gas

Appiano sulla Strada del Vino is also called “the Land of castles, lakes and wines” and it is located a few kilometers away from Bolzano. But this town is also known for its hockey team HC Eppan Pirates now playing in the A2 championship. The domestic matches are played at Appiano’s Ice Rink. It has been built in 1983, with a capacity of 1375 seats, this structure has recently done an important renovation of the technological systems. The intervention has involved the change of the thermal plant where condensing boilers have been installed. The project provided for a power of 450 kW, with 10% modulation of the total power, since the users (gym, locker

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water of the system, contained in the coils, provoking the condensation of the flues themselves and giving latent heat to the water, pre-heating it before it enters the chamber of the burner. - The pre-mixing unit that grant constantly to the burner an optimal air-gas ratio independently from the number of turns of the fan limiting to the minimum the consumptions and ensuring always the correct combustion (that means reduction of the pollutant emissions).

Heating system The heating system serves 3 locals: gym (annex to the ice rink), the cafeteria and the locker room. These uses are heated with radiators served with 3 high temperature room and cafeteria) rarely require a contemporaneous usage of the services. The thermal plant is located in the -1 floor, so the boilers had to be reliable and with reasonable dimensions. For these reasons, the boilers which have been chosen are 3 Power HT 1.1500 (dimensions hxwxd 80x45x113 cm).

circuits., while air-treatment machines, with exchange batteries supplied with 5 mixing circuits, are used for conditioning during winter. Given the number of circuits and the type of system, special attention have been paid to the sizing of the hydraulic separator, moreover on the primary circuit a second circulator for each boiler have been installed to decrease

Boilers Further the dimensions, the reasons were also energy saving and to reduce of pollutant emissions. The characteristics of Power HT can be summarized as following: - The stainless steel burner, through the internal spreader and the special micro-perforation of the cylindrical surface, grants a uniform spread of the air-gas mixture independently from his length. - The primary exchanger, totally made of stainless steel, is built with two cylindrical flue chambers, vertically positioned (burner chamber and condensation chamber). Inside the cylindrical surface there are stainless steel coils, in which run the water of the primary circuit. In the upper chamber the warm flues discharge gives heat to the return

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the difference of flow between primary circuit and second circuit. This solution, jointly with a boiler flow temperature depending on the outdoor temperature, allow to maximize the efficiency and the energy saving. Special attention have been paid also to the insulation of the pipes, due to the length of the distribution network.

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1

2

3

1

2

3

4

5

1

2

11

3

6

7

1 Floor standing condensing boiler POWER HT 1.1500 2 Boiler-manifolds connection kit 3 Second pump hydraulic connection 4 Flow manifold DN80 PN16 5 Return manifold DN80 PN16 6 Safety device ISPESL 7 Return sensor 8 Flow sensor 9 Hydraulic separator 10 Filter 11 Controller 12 Extension modules for the management of mixing zones 13 Outdoor sensor

9

12

10

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Serbian Embassy in Hungary Building Serbian Embassy in Hungary Location Budapest (Hungary) Use Diplomatic representation Levels 4

System data Importer: CimGas doo Heating power requirement: 510 kW (peak) Heating Generator: 6 x Luna HT 1.850 Thermal Plant: 2 dedicated indipendent rooms in the basement Heating Terminals: radiators

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Baxi integrated conditioning Building Residential and commercial building Location Busto Arsizio (VA) – Italy Premises 67 residential units, 9 commercial units Kind of premises Two-roomed, three-roomed, 2 levels three-roomed, four-roomed Stairwells 4 (A-B-C-D) Levels 5 levels A-B-C, 10 levels D

System data Project and installation: GABIP S.n.c. Commissioning: Valdadige Costruzioni S.p.A. Heat generator: modular condensing generator (GMC) for outdoor installation Stairwell A BAXI GMC 3 – 2x45 / 90 kW condensing modular generators Stairwell B BAXI GMC 3 – 2x45 / 90 kW condensing modular generators Stairwell C BAXI GMC 3 – 2x45 / 90 kW condensing modular generators Stairwell D BAXI GMC 3 – 2x85 / 170 kW condensing modular generators Solar system: solar collectors and double coil tank for DHW production Stairwell A 8 collectors SB 25 with 1 double coil UB 1500 DC Stairwell B 6 collectors SB 25 with 1 double coil UB 1000 DC Stairwell C 8 collectors SB 25 with 1 double coil UB 1500 DC Stairwell D 16 collectors SB 25 with 1 double coil UB 2000 DC Consumption accounting: calories/frigories meters Baxi Luna SAT RH and Luna SAT RHG1

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The complex “Le Residenze” is a new building designed with

The GMC outdoor installations allow to exploit the whole

high quality standards, located in the historic center of Busto

surface of the building.

Arsizio.

Inside the accommodations, Luna SAT RH (hydraulic connections G3/4’’) or RHG1 (hydraulic connections G1’’) have been mounted, according to the heating/cooling requirements of the flat. The consumption are recorded by a M-BUS transmission network to which are connected the heat recorder and the cold/hot water flow meters.

The building is rated “A” in Energy Performance Certificate, due to the innovative design, which special attention to the thermal insulation and advanced technology systems. Four centralized heating systems have been designed, in order to make independent the 4 stairwells of the building. Four Baxi modular condensing generators (GMC) have been installed combined with a solar system for the centralized DHW production and ari/water heat pump. This system

The flats are supplied with underfloor heating systems, while

permits to optimize the annual generation performances,

fan coils are installed in false ceiling for summer cooling.

using the heat pump both for cooling and heating, in this

Diverter valves change from summer to winter mode. In

case, it works only this outdoor temperatures higher than

commercial premises, wall mounted fan coils serves both for

6°C, with working conditions which allow a high COP. The

heating and cooling.

boilers in cascade work when the outside temperature is below 6°C, when the efficiency of the heat pump decreases also due to the frequent defrosting cycles. The choice of which heat generator was to work is automatically done by means of electric diverter valves, while the integration to the solar system to DHW production is always effected by the condensing boilers.

37


IMPIANTO DI RISCALDAMENTO

Ø 4"

Ø 4"

17 SAFETY VALVE

T

T

5

5

DN100

8

DN100

8

16 35 LT DHW EXPANSION VESSEL

10

11

2

8

DN100

Disgiuntore idraulico DN 100

Ø 1/2"

Ø 4"

Ø 4"

COLD WATER HOT WATER HOT WATER RECIRCULATION NATURAL GAS ELECTRIC SYSTEM

15 2000 LT STORAGE TANK

2

HEATING SYSTEM FLOW/RETURN

14 BAXI OUTDOOR SENSOR

13 200 LT EXPANSION VESSEL

28 BY-PASS DIFFERENTIAL VALVE Ø 1¼

27 THERMOSTATIC MIXER CALEFFI LEGIOMIX Ø 1¼

26 BALLSTOP CHECK SHUT-OFF VALVE

25 FUEL SHUIT-OFF VALVE

24 3 WAY SOLAR SYSTEM DIVERTER VALVE

23 BOILER REGULATOR TANK SENSOR

22 SOLAR SYSTEM TANK SENSOR

21 SOLAR CONTROLLER

20 SOLAR CIRCUIT EXPANSION VESSEL

19 BAXI SOLAR CIRCULATING GROUP

12 AUTOMATIC FILLING GROUP WITH MANOMETER

10 VARIABLE SPEED TWIN PUMP WILO STRATOS D 80/1-12 FLOW RATE 29.000 lt/h HEAD 7 mt. 11 FILTER

9 MANOMETER 0-6 bar

8 BUTTERFLY SHUT-OFF VALVES

7 ELECTRIC AUTOMATIC SAUTER VALVES

6 CHECK VALVE

3 HEATING SYSTEM TWIN PUMP WILO TOP SD 40/10 DM FLOW RATE 14000 lt/h HEAD 3 mt 4 TANK CIRCUIT TWIN PUMP WILO TOP SD 40/7 DM FLOW RATE 4000 lt/h HEAD 5 mt. 5 THERMOMETER 0-120°C

8

Ø 4"

Ø 4"

DN80

8

DN80

SAUTER AR 30 W

7

7

T

Ø 1/2"

8

DN100

8

DN100

Gas

14

25

DN100

DN100

7

7

scarico condensa

Commutazione automatica caldaia - pompa di calore Regolare il differenziale a 6°C

DIAMETER THICKNESS Ø 4" 60 mm. Ø 3" 55 mm. 50 mm. Ø 2" Ø 1½" 40 mm. Ø 1¼" 40 mm. 30 mm. Ø 1" 30 mm. Ø 3/4"

THERMAL CONDUCTIVITY 0,040 W/m°C

HOT WATER PIPES INSULATION THICKNESS

N.B. PIPES AND JOINTS OF THE SOLAR SYSTEM MUST BE MADE OF COPPER OR STAINLESS STEEL

Ø 2½"

28

Ø 3"

Ø 3"

28

O

28

T

T

5

5

2

2

Supporti antivibranti

9

9

N° 2 CALDAIE CALDAIA LUNA RESIDENTIAL 1.850 CALDAIA LUNA RESIDENTIAL 1.850

O

Espulsione fumi

Ø 1/2"

POTENZA FRIGORIFERA : 115 kW

Ø 4"

Ø 4"

3

8

2

2

8

5 T

13

6 8

T

5

PREDISPOSIZIONE AREOTERMO

Ø 5"

4

20

Ø 5"

DN80

1

2

2

1

5

1

1

T

19

1

6

T

5

24

Ø 28

Ø 28

T

T

Ø 1½"

Ø 1½"

19

T

Ø 35 T

Ø 35 Ø 35

2 ANTI-SHOCK JOINTS

DN80

Ø 35 Ø 35 Ø 35

18 HOT WATER RECIRCULATING PUMP WILO TOP Z 40/7 DM

Ø 1/2"

20

rubinetto di scarico

22

23

21

220 V

15

N° 16 PANNELLI SOLARI

17

Ø 2"

16

Ø 1"

1

26

Ø 2"

1

1

12

1

Ø 1/2"

26 Ø 2"

27

1

Ø 2"

26

TENERE CHIUSA

Ø 2"

LEGEND

Ø 2"

1 MANUAL ROTARY SHUT OFF VALVE

Ø 1/2"

38 1

6

1

48°C

Ø 1"

BY-PASS

1

Ø 2"

1

18

Ø 2"

1

Ø 1"

ACQUA FREDDA ADDOLCITA

RICIRCOLO ACQUA CALDA

ACQUA CALDA ALLE UTENZE


Other references around the world

Apartament building - Bjelasnic (Bosnia)

Cosgrove Park aged care - Launceston (Australia)

Apartament building - Odessa (Ucraina)

Cimitiere House - Launceston (Australia)

Tartu (Estonia)

Gerontology center - Jagodina (Serbia)

Gerontology House - Cegled (Hungary)

Ducati bikes store - Prague (Cezch Republic) 39


Solar Wizard (soon available) Baxi tool to design your solar systems Solar Wizard creates an accounting simulation to optimize Baxi solar systems. The tool makes a complete analysis of the components with graphics accounting and it also permits to print a detailed estimate based on the designed solution. Solar Wizard is part of the online free tools called – Baxi Wizard – on the Baxi.it web site. All the software on the same board With the same interface it is possible to enter the different accounting and configuration tools

Support menu always available During the configuration it is always available a support menu, to create a new configuration, ask support or open an existing project

All the projects just a click away Every registered user has an own space, where to find, modify and print the existing projects with all the related information

Installation examples always updated A type of installation is chosen to begin the project. The list of examples is constantly updated with the new products and installation schemes

Easy navigation Navigation arrows allow to confirm a choice and to move to next step (green arrow) or to go back to previous screens to modify the choices (yellow arrow) 40

More details before confirming Inside every type of installation it is possible to choose a specific example, the pictures can be enlarged with the mouse to easily see the details


Solar Wizard (soon available) Baxi tool to design your solar systems

Climatic data for each site More than 700 mapped location, with precise climatic data coming from the nearest weather stations. More than 19.000 data, including relative humidity, lowest and highest temperature and other specific data for the selected location

Configuration icons During the navigation, it is possible to see where the present screen is, thanks to the easy interface. It is also possible to “jump� from one screen to another, using this icons

Choosing solar panels The configurator helps choosing the best Baxi solar collectors solution or it is possible to chose a specific panel after have seen the technical data

Type of installation To have a complete and detailed configuration and estimate, it is necessary to choose the installation characteristics, including the type of roof (flat/ pitched) and the orientation of the pitch Specifications of the system Giving the dimensions of the cylinder installation site, an alert appears whenever the dimensions of the tank are bigger than the installation site

Assisted choice of the solar tank As for the collectors, the choice can be made by the tool or it is possible to choose a specific solar tank

41


Solar Wizard (soon available) Baxi tool to design your solar systems DHW specifications The user can choose the building (according to UNI/TS) and the DHW consumption DHW consumption Solar Wizard, according to UNI/TS 11300-2, accounts the need of thermal energy for DHW production DHW subsets The tool accounts the total efficiency and energy but it also gives information about the efficiency and the thermal energy of subsets of DHW supply, distribution, storage and production

Detailed analysis of the needs on a monthly base For a further examination, it is possible to analyze the efficiency of the solar system, also on a monthly base

Energy over need A graph shows energy over needs, which can be correct by adjusting the data selections (ex. numbers of collectors, solar tank, ‌)

42

A complete estimate At the end of the configuration, it is possible to choose optional accessories and then to print the complete estimate


43


Quality Environment Safety

Quality Environment Safety are Baxi strategic aims and the awarded certifications ensure compliance with the specific regulations

36061 BASSANO DEL GRAPPA (VI) - ITALY Via Trozzetti, 20 marketing@baxi.it www.baxi.it The Company assumes no responsibility for any possible contents mistakes, and reserves the right to make changes in products, due to technical or commercial demands, at any time without notice. Baxi S.p.A. 03-12 (E)

SYSTEMINFO #0  

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