systeminfo #0
DESCRIPTION
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.TRANSCRIPT
No. zero
2
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.
3
Energy saving in Sarajevo
Sarajevo (Bosnia) 04
Condensing solutions for South America
Santiago (Chile) 08
Smart comfort from the Sun
Pietra Ligure (SV) – Italy 12
Baxi commercial boilers build greener community
Biddeford - Maine (U.S.A.) 18
Ormond College - Student
Accommodation
Melbourne (Australia) 20
Castle in Letná Park
Prague, Letenské sady (Czech Republic) 24
Hungarian Partner’s premises
Cegled (Hungary) 26
Heat below 0°C
Appiano sulla Strada del Vino (BZ) – Italy 30
Serbian Emabssy in Hugary
Budapest (Hungary) 34
Baxi integrated conditioning
Busto Arsizio (VA) – Italy 36
Other references around the world 39
Close examination
Solar Wizard 40
Index
4
Building
New residential and commercial building
Location
Sarajevo (Bosnia)
Flats
176
Flats surface
50-90 m²
Levels
5
Stairwells
5 independent blocks
Importer: EGWProject: EGWPower supply: 1350 kWHeat generator: 9 x BAXI POWER HT 1.1500Thermal plant: dedicated site on the top of the buildingFlue: single flue pipe for each boilerUser’s management system: Luna SAT RPS heat boxes for heating and DHW productionDistribution: 5 risersRisers temperature: 70°CHeating terminals: aluminium radiatorsRenewables: hot spring (80°C)
System data
Energy saving in Sarajevo
5
Sani Grand City is a recently erected building, located near
the thermal district of Ilidža in Sarajevo (Bosnia).
At the ground floor there is a shopping center, on which the
residential part is located. The flats are placed on 5 levels
with a central court. The thermal plant described serves the
residential part of the building.
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 (70°C) 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
(176) the coefficient was at first estimated about 30%, but
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
risers. The choice has been to install Baxi Luna SAT RSP.
Concerning the collection and transmission of consumption
data, the client has decided to realize a wireless network,
since already adopted in a similar system, realized the
6
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.
6
7
8
Building
New residential building
Location
Macul district – Santiago (Chile)
Flats
248
Flats surface
60-120 m²
Levels
26
Importer: Anwo ChileProject: Climatermic S.A. – Anwo ChileInstallation: Climatermic S.A.Power supply: 1350 kWHeat generator: 9 x BAXI POWER HT 1.1500Thermal plant: dedicated site on the top of the buildingFlue: single flue pipe for each boilerUser’s management system: zones valve connected to room thermostatsDistribution: 2 risersRisers temperature: 60°CHeating terminals: radiatorsRenewables: none
System data
Condensing solutions for South America
9
Parque Ñuñoa in a recently erected building, located in the
elegant residential area of Macul in Santiago (Chile).
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
exchanger feeding the underlying heating circuit, due to the
height of the building (and the high static pressure there
would be in the heating terminals of the lower floors). The
value of the static pressure in the 2 parts of each raiser is
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
and boilers working with a flow lower that the minimum to
dispose the burner power.
10
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.
11
12
Building
Hotel and residence
Location
Pietra Ligure (SV) – Italy
Accommodations
60 rooms and about 129 beds
Floor standing boiler: 240 kW (open flue gas boiler)Plate heat exchanger: 250 kW
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 mountingSolar tank: 3 enamelled single coil solar tanks, 1000 litres capacity/eachSolar circulation group: 2 multipled solar circulation groups, with Comfort regulationSolar 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 mountingSolar tank: 2 double coil solar tanks, 1000 litres capacity/eachSolar circulation group: 2 multipled solar circulation groups, with Comfort regulationSolar pipes diameter: Øe. 28 mm, Øi. 25 mm stainless steel main pipes
Old system information
New solar system information
Smart comfort from the Sun
13
It is a accommodation facilities complex consisting of a
Residence and a Hotel with 33 and 27 rooms, for a total of
129 beds.
The 2 buildings are 50 m distance and are served with
the same system for the DHW production. The complex is
opened only during the summer season, so it requires only
DHW production from the centralized system.
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 pre-
warming 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.
New system
As said, the increased DHW requirement has led to the
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 parts have a multiple connection, and, to maximize
the efficiency and to help a bigger thermal exchange during
spring ad autumn, in the plant with 14 collectors and 2 tanks,
the 2 internal exchangers have a serial connection to reach a
14
thermal exchange power of about 105 kW. The management
of the solar system flows have been grant by means of 2
circulation groups with multiple connection, in order to win
the head losses (localizzate e distribuite) of the solar plant.
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
have an uniform distribution of the head losses related
to the project flow of 30 l hour/m2 collector, due to the
distance between the collectors and the tanks. If the solar
system does not satisfy the primary energy requirement for
DHW production, a diverter valve directs the pre-warmed
water through the plate exchanger feed by the boiler. The
boiler integrates the heat need to get DHW at the desired
temperature at any moment. Every recirculating system is
supplied with another diverter valve, that directs the water
of the recycle circuit through the exchanger or the tanks,
depending on the temperature of the return and of the solar
tank storage.
15
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: 18 MWh
• Gas saving: 4500 m3
• CO2 emissions avoided: 12.000 kg
• System efficiency: 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)
hot water
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recirulation
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Solar system scheme
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Building
City Hall - City Theatre
Location
Biddeford - Maine (U.S.A.)
Importer: Marathon Industries LTDHeat generator: 5 x Luna HT 1.650 kWThermal plant: dedicated room in the basementHeating power requirement: 325 kW (peak)Purpose: energy saving through replacement of the old boiler
System data
Baxi commercial boilersbuild greener community
19
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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Building
Student accomodation (330 rooms)
Use
College dorm and Teachers’ offices
Location
Melbourne (Australia)
Importer: HYDROHEAT SUPPLIES PTY LTDProject: arch. Joseph ReedHeating power requirement : 600 kW (peak)Heat generator: 4 x BAXI POWER HT 1.1500Thermal plant: dedicated site in the buildingHeating/DHW production: heating onlyHeating terminals: radiators
System data
Ormond College - Studentaccommodation
21
Ormond College occupies 10 acres of land adjoining the
University of Melbourne. The land was allocated to the
Presbyterian Church by the University in 1853 for the
establishment of a residential college ‘of and within the
University of Melbourne’, and under the auspices of the
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
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
set at 21° C with a night set back. The system starts operating
on the 1th of May and switches off on the 1st of November
(Southern Hemisphere). All radiators have a thermostatic head
except for the common hallways. It is a very simple but reliable
system.
22
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.
23
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24
Building
Four Restaurants – Castle
Location
Prague, Letenské sady (Czech Republic)
New system: heating system renovation in 2006
Purpose: energy saving and the old system exceeded the emissions limitHeat generator: 3 x BAXI LUNA HT 1.650Thermal plant: dedicated site on the top of the buildingSystem: heating onlyZone: a mixing zone and an air conditioning zone
System data
Castle in Letná Park
25
26
Building
Commercial building
Location
Cegled (Hungary)
Levels
3 levels of 220 m2 each
Boiler: Luna HT Residential 1.450 and biomass (pellet) boilerTank: DHW double coil UB 300 DC storage tank
Low temperature zones: 3 High temperature zone: 1Fan coil heating circuit : 1
Solar system:Solar collectors: 18 SB 25 collectorsInstallation: flat roof installation with 45° slope, vertical mounting, facing SouthSolar tank: 2 single coil UBPU 1500 storage tanksSolar circulation group: 2 solar circulation group, one of them with Comfort controller
System data
Hungarian Partner’s premises
27
The building has 3 levels, each of them is 220 m2, of which
actually 2 floors are used. Length of the building is 21 metre
and faces to south-west direction. Other side of the building
is built next to the warehouse. It’s made of burnt bricks
(Wienerberger Porotherm 30 cm + heat insulation 15 cm).
The calculated heat loss is 30kW. The used temperature
step is 40/30˚C. The first floor level houses the commercial
department (sales, purchasers, storekeepers). On the second
floor level are placed the accounting, executive offices.
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
working hours of the Comfort controller for DHW storage tank
is 2578 hours (max temperature 72°C), for the puffer tanks is
2250 hours. (collector max temperature is 110,4°C.)
The heating system consists of 3 heating zones (one for
each floor), and many heating/cooling zones nearly equal
to the number of rooms. Each one of the 3 heating zones
are controlled by temperature regulator for mixing systems
(RVA46 controller), while the ceiling heating/cooling zones are
controlled with regulators, which can be turned to heating/
cooling mode. The cooling system can reach 15°C-18°C cold
water, in summer.
The wood boiler directly charges the UBPU 1500 puffer
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).
Gas boiler strategy:
There is a boiler interface for climatic regulators (OCI 420)
in the gas boiler’s control panel, to receive exact heating
value needs. The gas boiler starts working if the storage tank
heating value is not enough to fulfil the heating requirements
28
which is calculated by a controller linked to temperature
regulator for mixing systems (RVA 46) by DATA bus
connection (MD-DB port).
28
29
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30
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
Building
Sport center – Ice rink
Location
Appiano sulla Strada del Vino (BZ) – Italy
Project: Ladurner G. ThermotechnikInstallation: Frei & RunggaldierCommissioning: City of Appiano Sulla Strada del Vino (BZ)
Heat generator: 3 x BAXI POWER HT 1.1500Maximum output: 450 kW (150 kWx3)Minimum output: 40,4 kWAverage efficiency (DIN 4702-T8): 109,8% (one boiler)NOx class: 5Kind of fuel: Natural gas
System data
Heat below 0°C
30
31
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).
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
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
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
32
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.
33
1 F
loor
sta
ndin
g co
nden
sing
boi
ler P
OW
ER
HT
1.15
002
Boi
ler-
man
ifold
s co
nnec
tion
kit
3 S
econ
d pu
mp
hydr
aulic
con
nect
ion
4 F
low
man
ifold
DN
80 P
N16
5 R
etur
n m
anifo
ld D
N80
PN
166
Saf
ety
devi
ce IS
PE
SL
7 R
etur
n se
nsor
8 F
low
sen
sor
9 H
ydra
ulic
sep
arat
or10
Filt
er11
Con
trolle
r12
Ext
ensi
on m
odul
es fo
r the
man
agem
ent o
f mix
ing
zone
s13
Out
door
sen
sor
1
2 3
5 4
6
9
10
7
8
13
11
12
1 1
2 3
2 3
34
Importer: CimGas dooHeating power requirement: 510 kW (peak)Heating Generator: 6 x Luna HT 1.850Thermal Plant: 2 dedicated indipendent rooms in the basementHeating Terminals: radiators
System data
Serbian Embassy in Hungary
Building
Serbian Embassy in Hungary
Location
Budapest (Hungary)
Use
Diplomatic representation
Levels
4
35
36
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
Project and installation: GABIP S.n.c.Commissioning: Valdadige Costruzioni S.p.A.
Heat generator: modular condensing generator (GMC) for outdoor installationStairwell A BAXI GMC 3 – 2x45 / 90 kW condensing modular generatorsStairwell B BAXI GMC 3 – 2x45 / 90 kW condensing modular generatorsStairwell C BAXI GMC 3 – 2x45 / 90 kW condensing modular generatorsStairwell D BAXI GMC 3 – 2x85 / 170 kW condensing modular generators
Solar system: solar collectors and double coil tank for DHW productionStairwell A 8 collectors SB 25 with 1 double coil UB 1500 DCStairwell B 6 collectors SB 25 with 1 double coil UB 1000 DCStairwell C 8 collectors SB 25 with 1 double coil UB 1500 DCStairwell 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
System data
Baxi integrated conditioning
37
The complex “Le Residenze” is a new building designed with
high quality standards, located in the historic center of Busto
Arsizio.
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
permits to optimize the annual generation performances,
using the heat pump both for cooling and heating, in this
case, it works only this outdoor temperatures higher than
6°C, with working conditions which allow a high COP. The
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.
The GMC outdoor installations allow to exploit the whole
surface of the building.
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 flats are supplied with underfloor heating systems, while
fan coils are installed in false ceiling for summer cooling.
Diverter valves change from summer to winter mode. In
commercial premises, wall mounted fan coils serves both for
heating and cooling.
3838
Supp
orti
antiv
ibra
nti
DN
80
DN
100
TAR
30 W
SAUT
ER
DN
100
idra
ulic
oD
isgi
unto
reD
N10
0D
N10
0
DN
100
O
Espulsi
one fum
i
Regola
re il dif
ferenzia
le a 6°C
Commu
tazion
e auto
matica
calda
ia - po
mpa d
i calore
Gas
O
TT
Ø 5" Ø
5"
8
1
2255
6
6 81221
112
1
1Ø 1
/2"
T5
T5
T5
T5
T
rubine
ttodi s
carico
Ø 35
Ø 35
T
220 V
N° 16
PANN
ELLI SO
LARI
IMPIAN
TO DI
RISCA
LDAME
NTO
DN
100
TT
5
Ø 1½"
Ø 3"
Ø 3"
Ø 4"
Ø 4"
DN
80
Ø 4"
Ø 4"
Ø 4"
Ø 4"
Ø 4"
Ø 4"
Ø 1½"
N° 2 C
ALDAIE
CALDA
IA LUN
A RES
IDENT
IAL 1.8
50CA
LDAIA L
UNA R
ESIDE
NTIAL
1.850
scarico
conde
nsa
POTEN
ZA FR
IGORIF
ERA :
115 kW
34
5
7 7
13
88
9
2 2
9
78
78
88
22
10
811
14
15
Ø 35
Ø 35
1920
21 2223
24
PRED
ISPOS
IZIONE
AREO
TERMO
L E G
E N
D
1 2 3 5 6
BUTT
ERFL
Y SH
UT-O
FF V
ALVE
S7
ELEC
TRIC
AUT
OMAT
IC S
AUTE
R VA
LVES
8
MAN
UAL R
OTAR
Y SH
UT O
FF V
ALVE
9 10
ANTI
-SHO
CK JO
INTS
MAN
OMET
ER 0
-6 b
ar
THER
MOM
ETER
0-1
20°C
CHEC
K VA
LVE
1520
00 LT
STO
RAGE
TANK
16
HEAT
ING
SYST
EM FL
OW/R
ETUR
N
COLD
WAT
ERHO
T WAT
ERHO
T WAT
ER R
ECIR
CULA
TION
NATU
RAL G
ASEL
ECTR
IC SY
STEM
N.B.
PIPE
S AN
D JO
INTS
OF
THE
SOLA
R SY
STEM
MUS
T BE
MADE
OF
COPP
ER O
R ST
AINL
ESS
STEE
L
17
AUTO
MAT
IC F
ILLI
NG G
ROUP
WIT
H M
ANOM
ETER
HEAT
ING
SYST
EM TW
IN PU
MP W
ILO TO
P SD
40/10
DM
FLOW
RAT
E 140
00 lt/
h HEA
D 3 m
t4
TANK
CIR
CUIT
TWIN
PUMP
WILO
TOP S
D 40
/7 DM
FL
OW R
ATE 4
000 l
t/h H
EAD
5 mt.
VARI
ABLE
SPEE
D TW
IN PU
MP W
ILO ST
RATO
S D 80
/1-12
FLOW
RAT
E 29.0
00 lt/
h HEA
D 7 m
t.11
FILT
ER12
200
LT E
XPAN
SION
VES
SEL
13BA
XI O
UTDO
OR S
ENSO
R14
35 LT
DHW
EXP
ANSI
ON V
ESSE
L SA
FETY
VAL
VE
18HO
T WAT
ER R
ECIR
CULA
TING
PUMP
WILO
TOP Z
40/7
DM
19BA
XI S
OLAR
CIR
CULA
TING
GRO
UP20
SOLA
R CI
RCUI
T EX
PANS
ION
VESS
EL21
SOLA
R CO
NTRO
LLER
22SO
LAR
SYST
EM TA
NK S
ENSO
R 23
BOIL
ER R
EGUL
ATOR
TANK
SEN
SOR
243
WAY
SOL
AR S
YSTE
M D
IVER
TER
VALV
E25
26
26
1617
6
Ø 1"
1
26
Ø 2"
1
127
48°C
1
TENER
E CHIU
SA
ACQU
A CALD
AALL
E UTEN
ZE
RICIRC
OLO
ACQU
A CALD
A
ACQU
A FRE
DDA
ADDO
LCITA
1Ø 2
"Ø 2
"Ø 2
"
Ø 1"
Ø 1"
Ø 2"
Ø 2"
Ø 2"
118
1
Ø 2"
26BA
LLST
OP C
HECK
SHU
T-OF
F VA
LVE
27TH
ERM
OSTA
TIC
MIX
ER C
ALEF
FI L
EGIO
MIX
Ø 1
¼
BY-PAS
S
HOT
WAT
ER P
IPES
INSU
LATI
ONTH
ICKN
ESS
DIAM
ETER
THIC
KNES
SØ
4"Ø
3"Ø
2"Ø
1½"
Ø 1¼
"
60 m
m.
55 m
m.
50 m
m.
40 m
m.
40 m
m.
Ø 1"
30 m
m.
Ø 3/
4"30
mm
.
THER
MAL
CON
DUCT
IVIT
Y 0,
040
W/m
°C
Ø 2½"
8
DN80
DN80D
N10
0
DN
100
TT
1920
Ø 35
Ø 35
28BY
-PAS
S DI
FFER
ENTI
AL V
ALVE
Ø 1
¼
2828
28
Ø 28
Ø 28
11
Ø 1/2"
Ø 1/2"
Ø 1/2"
Ø 1/2"
25
FUEL
SHU
IT-O
FF V
ALVE
Ø 1/2"
39
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)
4040
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 boardWith the same interface it is possible to enter the different accounting and configuration tools
Support menu always availableDuring 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 awayEvery registered user has an own space, where to find, modify and print the existing projects with all the related information
Installation examples always updatedA type of installation is chosen to begin the project. The list of examples is constantly updated with the new products and installation schemes
Easy navigationNavigation 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)
More details before confirmingInside 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
41
Solar Wizard (soon available)Baxi tool to design your solar systems
Climatic data for each siteMore 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 iconsDuring 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 panelsThe 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 installationTo 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 systemGiving 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
4242
DHW specificationsThe user can choose the building (according to UNI/TS) and the DHW consumption
DHW consumptionSolar Wizard, according to UNI/TS 11300-2, accounts the need of thermal energy for DHW production
Energy over needA graph shows energy over needs, which can be correct by adjusting the data selections (ex. numbers of collectors, solar tank, …)
A complete estimateAt the end of the configuration, it is possible to choose optional accessories and then to print the complete estimate
Detailed analysis of the needs on a monthly baseFor a further examination, it is possible to analyze the efficiency of the solar system, also on a monthly base
Solar Wizard (soon available)Baxi tool to design your solar systems
DHW subsetsThe 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
43
QualityEnvironment
Safety
Quality
Environment
Safetyare Baxi strategic aims and
the awarded certifications
ensure compliance with the
specific regulations
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)
36061 BASSANO DEL GRAPPA (VI) - ITALY
Via Trozzetti, 20
www.baxi.it