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Outdoor temperatures up to -20°C HSW production up to 80°C Up to class A Scroll compressors Axial fans Plates and finned condensing coils Indoor and outdoor installation Refrigerant R134a Refrigerant R410a
HEATING CAPACITY:from 6,8 kW up to 76,8 kW (application with radiant panels - TAE = 7°C; TWI/WO = 30°C/35°C)from 6,2 kW up to 73,5 kW (application with Fancoils - TAE = 7°C; TWI/WO = 40°C/45°C)
Air-water heat pumps at high temperature with double cascade cycle for heating and domestic hot water.
TECHNICAL BULLETINCod. BT-DUO-REV01-0217-UK
DUO
RESIDENTIAL & LIGHT COMMERCIALHEATINGHEATING
ii
DUOHEATINGHEATING
DESCRIPTION
Air-water heat pumps at high temperature with double cascade cycle with two scroll compressors running with combined refrigerants (R410a e R134a) to production:
■ hot water for winter space heating;■ hot sanitary water (h.s.w.).
The innovative technical solutions applied to DUO allow to overcome the operating limits of a traditional heat pump as well as an up-to-date one:
■ constant heating capacities even with a decrease of the outdoor temperature (-20°C;+20°C) in winter;
■ many designing options (up to 80°C) that allow:- hot water production at very high temperature on condenser to serve both civilian and process hot utilities;- hot water production at very high temperature on recuperator, to serve sanitary utilities;
■ high reliability and durability (reduction mechanical stress thanks to compression ratios lower than traditional heat pumps);
■ high energy efficiency (COP >4,2) and low emissions CO₂<50%).
HIGHLIGHTS
iii
DUOHEATINGHEATING
HIGHLIGHTS
CASCADE CYCLE
Electronic expansion valve
Te = evaporating temp. 23°C
Inverter scroll compressor
Inverter scroll compressor
Inverter fans
Hot sanitary water up to 80°C
Hot sanitary water production (middle seasons)
Outdoor air temp. up to 18°C
P
H
Electronic expansion valve
Tc = condensing temp. 85°C
Te = evaporating temp. -25°C
Hot water up to 80°C
Inverter scroll compressor
Inverter scroll compressor
Inverter fans
Hot sanitary water up to 80°C
Winter space heating and hot sanitary water production
Outdoor air temp. up to -20°C
P
H
Tc
Te
Te
iv
DUOHEATINGHEATING
HIGHLIGHTS
REINTEGRO ACQUA DI RETE / AUTOMATIC WATER FILLING
OPERATING MODES
DUO is a special unit equipped with two water circuits, one dedicated to winter space heating and the other one dedicated to the hot sanitary water production. It stands out for its innovative refrigerant circuit and advanced control system, which allow to satisfy all conditioning and sanitary needs of the plants in every season.
REINTEGRO ACQUA DI RETE / AUTOMATIC WATER FILLING
WINTER SPACE HEATING AND HOT SANITARY WATER PRODUCTION
During winter DUO provides hot water for heating or sanitary purposes (with higher priority for sanitary uses).
WINTER
REINTEGRO ACQUA DI RETE / AUTOMATIC WATER FILLING
WINTER SPACE HEATING
During winter DUO provides hot water for heating purposes.
WINTER
HOT SANITARY WATER PRODUCTION
During middle seasons DUO provides hot sanitary water.
MIDDLE SEASONS
v
DUOHEATINGHEATING
HIGHLIGHTS
CONSTANT HEATING CAPACITY DURING WINTER SPACE HEATING
The heating capacity of the DUO unit remains constant although with decreasing of the outdoor air temperature, ensuring a reli-able and efficient operation with great advantages in terms of energy consumption. The DUO unit is able to provide the heating capacity required by the plant even with outdoor temperature up to -20°C, while traditional heat pumps use to have problems working with outdoor temperature next to 0°C.
Critical operatingconditions
Outdoor temp. [°C] (dry bulb)
-20 -15 -10 -5 0 5 10 15 20
Hea
ting
capa
city
[kW
]
DUO 112 Z SW
Traditional heat pump
Duo vs traditional heat pump
HIGH ENERGY EFFICIENCY
The double-compression cycle can operate at the point of optimal operation of the compressor, or at the point of maximum isentropic efficiency regardless of the ambient air temperature, in contrast to the heat pump where the ratio isentropic compression increases with the outside temperature decreasing, making worse isentropic efficiency.
ISENTROPIC EFFICIENCY
Traditional heat pump
DUO
Max efficiency
Low efficiency
Compression ratio
ISEN
TRO
PIC
EFF
ICIE
NC
Y
vi
DUOHEATINGHEATING
HIGHLIGHTS
INVERTER Heat pumpTemperature set up
Heat pump
INVERTER
1°C
2°C
FULL INVERTER TECHNOLOGY
Very high energy efficiency and reliability:
• mechanicalstressreductionby30%;• startupcurrentreductionby50%;• compressionratioreductionby50%.
The inverter scroll compressors of latest generation allow to reach extreme working conditions, ensuring the highest efficiency perfor-mances.They also guarantee a very low-noise impact.FULL INVERTER circulators allow to optimize the start-up of the unit with very low outdoor temperature in heat pump operating mode.The modulation of the water flow rate allows to control the condens-ing temperature, optimizing defrost cycles; it allows also to acceler-ate the achievement of set point temperature and to facilitate the start-up after prolonged inactivity or with low temperature of the tank.The inverter circulators are equipped with brushless motors, so it is possible to obtain better performances than pumps equipped with on/off motors, but ensuring very high energy saving.
HIGH DURABILITY
In standard conditions, the normal life cycle for compressors is usually about 40000 h.By using inverter technology, DUO increases the compressors’ life cycle, which are subjected to less mechanical stress and less start and stop stress.
• Operatinghours>60000h;*• Lifecycleincreaseby50%.
* assignedinreportsbysupplierswhichareleadersinthepro-duction of latest generation scroll compressors.
Ope
rativ
e ho
urs
80000
60000
20000
0
40000
Traditional compressors DUO Compressors
60000 h
40000 h
Compressors life cycle
Comparison of CO₂ emissions into the atmosphere (DUO)
REDUCED EMISSIONS
The DUO solution provides a lower impact to the environment compared to the best fuel technology: given that today the cli-mate is more with combustion systems, ideally thinking of re-placing all combustion installations with multi-function units DUO, you drastically reduce emissions of greenhouse gases.In compliance with the SCHERPHA (research for sustainable heat and energy) within 2030 the annual carbon emissions produced by a traditional heating system of the EU could decrease from 8 to 1 CO₂ tons thanking to the use of multifunctional technology.
-50%
Boiler + chiller unit DUO System0
40
20
30
10
50
60
70
80
90
100
AN
NU
AL
EMIS
SIO
NS
OF
CO₂ K
G %
vii
DUOHEATINGHEATING
HIGHLIGHTS
DIGITAL DEFROST TECHNOLOGY
In the electronic control system has been implemented a new in-novative digital defrosting technology able to reduce to zero the production of negative energy towards the plant during defrosting, when a heat pump normally uses to switch the cycle in chiller mode producing cold water.DIGITAL DEFROST is a digital self-adaptive defrosting system able to prevent the production of frost that works only in case of effective presence of frost on the coils’ fins.In particular, the system operates by modulating the compressors’ inverter frequency according to the outdoor temperature, raising the evaporating temperature above the defrost limit. The unit is subjected to a significantly reduced number of defrost cycles. The reduction of mechanical stress, due to the cycle inversions dur-ing heating mode, implies an increase in the life cycle of the unit, as well as improving the comfort felt by the user.
Trend of compressor frequency (Frequency)
15
-5
10 2 3 4 5 6 7 8 9 10 11 12
DEFROST limit
Tev [°C]
40%
100%
Frequency modulation [min]
-30°C-25°C
-20°C
-8°C
-2°C
7°CEvaporatingtemperature
Outdoor temp.
-20°C 7°C
Optimal working area
Probable frost presence area
Ice presence area
Possible working areas
ADJUSTABLE SET POINTS FOR ANY URER
The advanced electronic of DUO allows you to manage both refrigeration cycles in an inter-active way through a full inverter technology applied to compressors, electronic expansion valves and circulators. It also allows you to set different and completely independent set points for HSW and heating purposes. Finally it easily handles the digital defrost system. This provides high adaptability to any type of plant or installation need.
DYNAMIC SET POINT
The DYNAMIC SET POINT allows to optimize the heat load provided to the users during the entire period of operation of the unit.Depending on the heat load , the control set point fits always guaranteeing an optimal tem-perature of the feed water to the terminals of the plant, providing only the necessary ther-mal energy as a function of the outside air temperature.
In fact if the outdoor temperature increases, through the function DSP it is possible:
• toincreasethesetpointincaseitisnecessarytocontainpowerconsumptionsanditisneeded to ensure a difference between the indoor and outdoor temperature such avoid lack of comfort due to the excessive changes of temperature;
• toreducethesetpointincaseitisrequiredtocompensateinsuchawaytheexcessofthermal load; of course this is a function to be used with precaution because it generates higher power consumption.
set pointacs
set pointhsw
set pointutenze
invernaliset point
winter heating
65°CCOP = 2,9
35°CCOP = 4,3
0°C 20°C 40°C 60°C 80°C
viii
DUOHEATINGHEATING
HIGHLIGHTS
HIGH WATER OUT TEMPERATURE
The bacterium Legionella has the maximum growth with a water temperature between 25°C and 42°C.DUO allows to reach water temperatures up to 80°C: this temperature is also high enough for the instantaneous elimination of the dangerous bacterium.The system is also capable of triggering an anti-legionella cycle individually as needed.
HEATING CAPACITY: DUO 112 Z SM VS TRADITIONAL HEAT PUMP
The heating capacity of single stage heat pumps has significant decay, in particular with extreme outdoor temperature. In fact the operating range of the units is very limited already with outdoor temperature at 0°C. Comparing the different units, at the same operating conditions, is possible to observe the superiority of DUO that provides much higher heating capacity.The innovation of DUO avoids the decreasing of heating capacity thanks to the cycle with compressor at R410a (outdoor unit) that allows, modulating the power, to the cycle with compressor at R134a (indoor unit) to evaporate at the best conditions in constant way, ensuring hot water production up to 80°C.
(1) DUO 112 Z SW: Constant heating capacity with decreasing of outdoor temperature with hot water production at T=35°C.(2) DUO 112 Z SW: Constant heating capacity with decreasing of outdoor temperature with hot water production at T=45°C.(3) Traditional heat pump: Heating capacity decreases with decreasing of outdoor temperature with hot water production at T=35°C.(4) Traditional heat pump: Heating capacity decreases with decreasing of outdoor temperature with hot water production at T=45°C.
ix
DUOHEATINGHEATING
VERSIONE SPLITVERSIONE SPLIT
HIGHLIGHTS
COP: DUO 112 Z SW VS TRADITIONAL HEAT PUMP
The COP of single stage heat pumps decrease with decreasing of outdoor temperature, reaching very low values, starting from 0°C.In DUO COP decreases less quickly and allows the correct operating mode, also with outdoor temperature up to -20°C, ensuring the hot water production up to 80°C.
(1) DUO 112 Z SW: COP in function of outdoor temperature with hot water production at T=35°C.(2) DUO 112 Z SW: COP in function of outdoor temperature with hot water production at T=45°C.(3) Traditional heat pump: COP in function of outdoor temperature with hot water production at T=35°C.(4) Traditional heat pump: COP in function of outdoor temperature with hot water production at T=45°C.
The wide range of versions available for DUO allows to grasp all the opportunities coming from the market, responding better to the different installation requirements.
RANGE AND VERSIONS
Not reversible heat pump for space heating
and HSW production
Not reversible heat pump for space
heating
1
DUOHEATINGHEATING
Index
Product coding
Example of typical identification code: DUO 145 Z SR
DUO products coding is straightforward and follows the same coding used by Thermocold for other units:
1
DUO
45 Z SR
Basic versionSR: not reversible heat pump for heating, split version.SW: not reversible heat pump for heating and HSW Production, split version.
Compressor typeIt indicates the type of compressor installed on the machine, on DUO hermetic scroll compressors are used; they are very reliable and have reduced sound emissions.
Heating capacityIt is the field which indicates the nominal heating capacity of the units expressed in kW (conditions Tae=7°C; T (production hot water)=40°C/45°C).
Number of refrigerant circuitIt is the field which indicates the number of refrigerating circuits with which each cycle is realized; DUO has an innovative refrigerating circuit whose number of components for each function has been minimized.
Product coding 1Technical features 2Technical data 4Performance tables 9Operating limits 10Inverter pumps flow rate pressure characteristics 11Correction tables 14Plant scheme with accessories 15General arrangement drawings and weights 17
2
DUOHEATINGHEATING
SCROLL COMPRESSORS
The units have hermetic scroll compressors, characterized by high performances, reduced vibrations and little sound emissions.During operation it’s developed a more uniform compression and pulsation, there are no alternative movements of pistons accompanied by masses or vibration forces to benefit the low noise making unnecessary both pulsation dampeners and the isolation of compressor with headphones or in isolated compartments.High COP values are guaranteed by high volumetric efficiency. During operation The compressor maintains a supply of power output with limited variations, it guaranteed continuous operation of the compressor, with limited number of stat and stops than the other type of com-pressors.The inverter technology, applied to last generation compressors, allows to control and to adapt the speed of the compressor in relation to the set-point. Reached the required temperature, it is kept constant modulating the power delivered to a minimum, ensuring much higher energy saving.For this reason, it is possible to save energy, faster in achieving the desired set-point and a better and more protracted control of relative humidity in the room.The temperature of the gas flow is significantly lower thanks to the limited internal heat of the gas aspirated it allows you to work with pres-sures condensation reduced with more comfort and much long life cycle of the compressor.
The electric inverter motor, cooled by the refrigerant inlet, it is equipped with internal thermal protection.
CASING
Painted galvanized steel cabinet to the machine that gives a high resistance to corrosion. The front panel is easily removable for access to all internal components and to allow maintenance operations, but with extreme ease.
FINNED BLOCK EXCHANGER
The DUO units are equipped with heat exchanger coil with inner grooved copper tubes and aluminum . that allows for greater heat exchange capacity in the same area.
CONDENSER/EVAPORATOR FANS SECTION
The units are equipped with condensing section of axial fans, statically and dynamically, driven by electric motors with continuous speed vari-ation and with a closed internal thermal protection.The continuously variable speed can significantly reduce the power drawn by the fans, resulting more energy savings.When the unit will have to dispose of an air flow less than the maximum (for example in heat pump operating mode) the fan reduces its speed of rotation.
PLATE HEAT EXCHANGERS
Heat exchangers, water direct expansion type brazed plate in AISI 316, externally insulated with anti-cell closed with antifreeze heater switch and differential pressure. The double thermodynamic cycle is developed through the gas – gas exchanger. This constructive solution, developed by Thermocold, allows to obtain much high performances through an optimized heat change for refrigerants R134a and R410a. It allows to split the compression and it allow to obtain constant heating capacities and produces hot water up to 80°C.
REFRIGERANT CIRCUIT
The refrigeration circuit of both units is made entirely of copper and includes:
• electronicexpansionvalve;• highandlowpressureshut-off.valvesontheline;• shut-offvalveonliquidline;• refrigerantcharge;• liquidreceiver;• fourwayvalveforreversingthecycle;• safetyvalvelowpressure;• liquidlinesolenoidvalve;• pressuretransducers;• filterdrier;• plateevaporatorwithhighefficiency;• connectionvalves.
ELECTRIC CONTROL PANEL AND POWER
Electric board made in accordance with standards CEI 44-5/IEC 204-2 including:
• contactorsforcompressorandfans;• fusesforthecompressor;
Technical features
3
DUOHEATINGHEATING
• fusesforthefanmotors;• fusesforcontrolcircuit;• invertercompressor;• electricalfans(outdoorunit);• continuouscondensingcontrol.
The control interface provides:
• monitoringofanalogicalstatusvariablesofthesystem;• monitoringofthestatusoftheactuators;• readingalarmcode;• activationofthemachineinthedesiredcycle;• changingofoperatingparametersofthemachine(withvariouslevelsdependingonthepasswordentered);• changingofdefrostingtiming(onlyforaircooledheatpumps);• changingofactivationlimitforantifreezeheater;• dynamicsetpointinfunctionofoutdoortemperature.
WATER CIRCUIT (only indoor unit)
• airconditioningsysteminverterwaterpump;• hswinverterpump(onlySWversions);• automaticreliefvalve;• hswandairconditioningsystemexpansiontank.
ACCESSORIES ON REQUEST
• Snowcap(S).• Completeantiintrusiongrilles(M).• Remotecontroldisplay(S).• Automaticwaterfilling(S).• Waterstrainer(S).• Flowswitch(S).• OilseparatorforSPLITversionwithrefrigerantconnectiondistanceover12meters(M).• Rubberantivibrationmounts(S).
NOTA: (S) Loose; (M) Mounted.
Technical features
REFERENCE STANDARD
THE PRESSURE EQUIPMENT DIRECTIVE (97/23/EC)UNI EN ISO 3744 ACOUSTIC REGULATIONUNI-EN-ISO 9001:2008: QUALITY MANAGEMENT SYSTEMS LOW VOLTAGE DIRECTIVE (LVD) 2006/95/EC.MACHINERY DIRECTIVE 2006/42/ECDIRECTIVE FOR ELECTROMAGNETIC COMPATIBILITY 2004/108/CECEI-EN 60204-1 DIRECTIVE (CEI44-5; CEI EN 62061) MACHINERY SAFETY – ELECTRIC MACHINERY – EQUIPMENTSERP DIRECTIVE (ENERGY-RELATED-PRODUCTS ECODESIGN 2009/125/CE)UNI EN 14511-1-2-3-4 TESTING CONDITIONS.
4
DUOHEATINGHEATING
CONDITIONSVers.
MODELS
TAE TWC TWS TWE 112 Z 125 Z 145 Z 170 Z
FANCOILS
WINTER SPACE HEATING
HEATING CAPACITY 7/6,2 40/45
SRSW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 7/6,2 40/45 kW 3,25 6,53 11,75 18,85
TOTAL POWER INPUT 7/6,2 40/45 kW 3,73 7,11 13,10 20,09
COP 7/6,2 40/45 3,40 3,60 3,50 3,66
HEAT EXCHANGER WATER FLOW RATE 7/6,2 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 40/45 kPa 6,1 8,2 7,1 8,2
WINTER SPACE HEATING + HSW
HEATING CAPACITY HSW 7/6,2 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 7/6,2 40/45 kW 3,25 6,53 11,75 18,85
TOTAL POWER INPUT 7/6,2 40/45 kW 3,73 7,11 13,10 20,09
COP 7/6,2 40/45 3,40 3,60 3,50 3,66
HEAT EXCHANGER WATER FLOW RATE 7/6,2 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 40/45 kPa 6,1 8,2 7,1 8,2
MIDDLE SEASONS HSW
HEATING CAPACITY HSW 15/10,8 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 15/10,8 40/45 kW 2,88 6,15 10,40 16,67
TOTAL POWER INPUT 15/10,8 40/45 kW 3,24 6,67 11,44 17,72
COP 15/10,8 40/45 3,92 3,84 4,01 4,15
HEAT EXCHANGER WATER FLOW RATE 15/10,8 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 15/10,8 40/45 kPa 6,1 8,2 7,1 8,2
TAE = Outdoor air temperature [°C] (dry bulb/wet bulb)TWC = Condenser water temperature [°C] (winter space heating)TWS = Recovery water temperature [°C] (h.s.w.)
GENERAL TECHNICAL DATA
Technical data
5
DUOHEATINGHEATING
CONDITIONSVers.
MODELS
TAE TWC TWS TWE 112 Z 125 Z 145 Z 170 Z
RADIANT PANELS
WINTER SPACE HEATING
HEATING CAPACITY 7/6,2 30/35
SRSW
kW 13,55 26,68 47,85 76,84
COMPRESSOR POWER INPUT 7/6,2 30/35 kW 2,85 5,74 10,31 16,54
TOTAL POWER INPUT 7/6,2 30/35 kW 3,30 6,35 11,39 17,87
COP 7/6,2 30/35 4,10 4,20 4,20 4,30
HEAT EXCHANGER WATER FLOW RATE 7/6,2 30/35 m³/h 2,3 4,6 8,2 13,2
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 30/35 kPa 7,0 8,9 7,7 9,0
WINTER SPACE HEATING + HSW
HEATING CAPACITY HSW 7/6,2 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 7/6,2 40/45 kW 3,25 6,53 11,75 18,85
TOTAL POWER INPUT 7/6,2 40/45 kW 3,73 7,11 13,10 20,09
COP 7/6,2 40/45 3,40 3,60 3,50 3,66
HEAT EXCHANGER WATER FLOW RATE 7/6,2 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 40/45 kPa 6,1 8,2 7,1 8,2
MIDDLE SEASONS HSW
HEATING CAPACITY HSW 15/10,8 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 15/10,8 40/45 kW 2,88 6,15 10,40 16,67
TOTAL POWER INPUT 15/10,8 40/45 kW 3,24 6,67 11,44 17,72
COP 15/10,8 40/45 3,92 3,84 4,01 4,15
HEAT EXCHANGER WATER FLOW RATE 15/10,8 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 15/10,8 40/45 kPa 6,1 8,2 7,1 8,2
GENERAL TECHNICAL DATA
Technical data
TAE = Outdoor air temperature [°C] (dry bulb/wet bulb)TWC = Condenser water temperature [°C] (winter space heating)TWS = Recovery water temperature [°C] (h.s.w.)
6
DUOHEATINGHEATING
CONDITIONSVers.
MODELS
TAE TWC TWS TWE 112 Z 125 Z 145 Z 170 Z
MEDIUM TEMPERATURE RADIATORS
WINTER SPACE HEATING
HEATING CAPACITY 7/6,2 55/65
SRSW
kW 11,98 23,96 43,15 69,21
COMPRESSOR POWER INPUT 7/6,2 55/65 kW 3,92 8,18 14,14 22,72
TOTAL POWER INPUT 7/6,2 55/65 kW 4,28 8,87 15,41 23,95
COP 7/6,2 55/65 2,80 2,70 2,80 2,89
HEAT EXCHANGER WATER FLOW RATE 7/6,2 55/65 m³/h 1,0 2,1 3,7 6,0
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 55/65 kPa 1,4 1,8 1,6 1,8
WINTER SPACE HEATING + HSW
HEATING CAPACITY HSW 7/6,2 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 7/6,2 40/45 kW 3,25 6,53 11,75 18,85
TOTAL POWER INPUT 7/6,2 40/45 kW 3,73 7,11 13,10 20,09
COP 7/6,2 40/45 3,40 3,60 3,50 3,66
HEAT EXCHANGER WATER FLOW RATE 7/6,2 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 40/45 kPa 7,2 9,0 14,2 8,2
MIDDLE SEASONS HSW
HEATING CAPACITY HSW 15/10,8 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 15/10,8 40/45 kW 2,88 6,15 10,40 16,67
TOTAL POWER INPUT 15/10,8 40/45 kW 3,24 6,67 11,44 17,72
COP 15/10,8 40/45 3,92 3,84 4,01 4,15
HEAT EXCHANGER WATER FLOW RATE 15/10,8 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 15/10,8 40/45 kPa 7,2 9,0 14,2 8,2
HIGH TEMPERATURE RADIATORS
WINTER SPACE HEATING
HEATING CAPACITY 7/6,2 70/80
SRSW
kW 10,58 21,17 38,03 60,72
COMPRESSOR POWER INPUT 7/6,2 70/80 kW 4,61 9,36 15,65 24,97
TOTAL POWER INPUT 7/6,2 70/80 kW 5,04 9,97 16,87 26,17
COP 7/6,2 70/80 2,10 2,12 2,25 2,32
HEAT EXCHANGER WATER FLOW RATE 7/6,2 70/80 m³/h 0,9 1,8 3,3 5,2
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 70/80 kPa 1,1 1,4 1,2 1,4
WINTER SPACE HEATING + HSW
HEATING CAPACITY HSW 7/6,2 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 7/6,2 40/45 kW 3,25 6,53 11,75 18,85
TOTAL POWER INPUT 7/6,2 40/45 kW 3,73 7,11 13,10 20,09
COP 7/6,2 40/45 3,40 3,60 3,50 3,66
HEAT EXCHANGER WATER FLOW RATE 7/6,2 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 7/6,2 40/45 kPa 7,2 9,0 14,2 8,2
MIDDLE SEASONS HSW
HEATING CAPACITY HSW 15/10,8 40/45
SW
kW 12,68 25,58 45,86 73,54
COMPRESSOR POWER INPUT 15/10,8 40/45 kW 2,88 6,15 10,40 16,67
TOTAL POWER INPUT 15/10,8 40/45 kW 3,24 6,67 11,44 17,72
COP 15/10,8 40/45 3,92 3,84 4,01 4,15
HEAT EXCHANGER WATER FLOW RATE 15/10,8 40/45 m³/h 2,2 4,4 7,9 12,6
HEAT EXCHANGER WATER PRESSURE DROP 15/10,8 40/45 kPa 7,2 9,0 14,2 8,2
GENERAL TECHNICAL DATA
Technical data
TAE = Outdoor air temperature [°C] (dry bulb/wet bulb)TWC = Condenser water temperature [°C] (winter space heating)TWS = Recovery water temperature [°C] (h.s.w.)
7
DUOHEATINGHEATING
CONDITIONSVers.
MODELS
TAE TWC TWS TWE 112 Z 125 Z 145 Z 170 Z
COMPRESSORS
COMPRESSORS NUMBER
SRSW
2 2 2 2
REFRIGERANT CIRCUITS 1 1 1 1
REGULATION STEPLESS INVERTER REGULATION
REFRIGERANT CHARGE kg 1,90 3,70 6,30 3,20
OIL CHARGE l 1,80 1,80 1,80 1,80
FANS
FANS NUMBER
SRSW
2 1 2 2
AIR FLOW m3/h 15.000 17.000 34.000 34.000
TOTAL POWER INPUT kW 0,86 1,23 2,46 2,46
TOTAL POWER INPUT IN HEAT PUMP MODE kW 0,43 0,61 1,22 1,22
PHSW FLOW RATE
ISTANTANEOUS HSW FLOW RATE - DELTA T 65°C: Tin 15°C - Tout 80°C 7/6,2
SW
l/min 5,05 10,11 18,17 29,01
ISTANTANEOUS HSW FLOW RATE - DELTA T 45°C Tin 15°C - Tout 65°C 7/6,2 l/min 5,17 10,33 18,61 29,85
ISTANTANEOUS HSW FLOW RATE - DELTA T 30°C Tin 15°C - Tout 45°C 7/6,2 l/min 5,77 11,64 20,87 35,14
TANKS (accessories)
MINIMUM CLIMATIZATION USERS WATER TANK CAPACITY l 80,00 150,00 250,00 600,00
MINIMUM SANITARY USERS WATER TANK CAPACITY l 80,00 150,00 250,00 600,00
TIME FOR SANITARY WATER TANK REGENERATION FROM 30°C TO 80°C 7/6,2
SW
min 26 25 23 34
TIME FOR SANITARY WATER TANK REGENERATION FROM 30°C TO 65°C 7/6,2 min 18 17 16 23
TIME FOR SANITARY WATER TANK REGENERATION FROM 30°C TO 45°C 7/6,2 min 7 6 6 9
ACOUSTIC DATA
INDOOR UNIT
SOUND PRESSURE LEVEL (1) SRSW
dB (A) 51 48 55 53
SOUND POWER LEVEL dB (A) 73 70 77 82
OUTDOOR UNIT
SOUND PRESSURE LEVEL (1) SRSW
dB (A) 57 62 63 56
SOUND POWER LEVEL dB (A) 79 84 85 85
TAE = Outdoor air temperature [°C] (dry bulb/wet bulb)TWC = Condenser water temperature [°C] (winter space heating)TWS = Recovery water temperature [°C] (h.s.w.)(1) calculated according to ISO 3744 at 5 m from the unit
GENERAL TECHNICAL DATA
Technical data
8
DUOHEATINGHEATING
Technical data
Electrical data referred to 230V / 1PH / 50HZ (112 kW) and 400V - 3PH+N-50Hz (125-145-170 kW). Maximum operating admitted conditions: 10%. Maximum phase unbalance: 3%.I.U. indoor unit.O.U. outdoor unit.(1) maximum operating admitted conditions by the compressors manufacturer.(2) data referred to the biggest compressor for units with different compressors.F.L.I. full load electrical power.F.L.A. full load operating current.L.R.A. compressor motor locked rotor current (direct starting).S.A. sum of LRA of the most powerful compressor, FLA of other compressor and fans current.E.P. electrical power.O.C. operating current.
SR version
Mod.
NOMINAL VALUESOutdoor air temperature 7°C,water condenser temperature in/out 40/45°C MAX VALUES (1) O.U. MAX VALUES (1) I.U.
Compressors (2) Fans TOTAL TOTAL TOTAL
F.L.I. F.L.A. E.P. O.C. F.L.I. F.L.A. F.L.I. F.L.A. S.A. F.L.I. F.L.A. S.A.
kW A kW A kW A kW A A kW A A
112 Z 3,3 5,7 0,5 1,0 3,7 6,6 6,2 15,3 19,6 5,6 12,4 64,0
125 Z 6,5 11,4 0,6 1,2 7,1 12,6 16,6 33,0 41,7 7,4 17,6 98,0
145 Z 11,8 20,6 1,4 2,7 13,1 23,3 21,7 44,0 55,7 13,4 28,0 145,0
170 Z 18,9 33,0 1,2 2,5 20,1 35,5 25,2 64,0 80,2 19,7 39,2 215,0
ELECTRICAL DATA - HEATING MODE
ELECTRICAL DATA - HEATING MODE AND HSW PRODUCTION
SW version
Mod.
NOMINAL VALUESOutdoor air temperature 7°C, water condenser temperature in/out 40/45°C MAX VALUES (1) O.U. MAX VALUES (1) I.U.
Compressors (2) Fans TOTAL TOTAL TOTAL
F.L.I. F.L.A. E.P. O.C. F.L.I. F.L.A. F.L.I. F.L.A. S.A. F.L.I. F.L.A. S.A.
kW A kW A kW A kW A A kW A A
112 Z 3,3 5,7 0,5 1,0 3,7 6,6 6,2 15,3 19,6 5,6 12,4 64,0
125 Z 6,5 11,4 0,6 1,2 7,1 12,6 16,6 33,0 41,7 7,4 17,6 98,0
145 Z 11,8 20,6 1,4 2,7 13,1 23,3 21,7 44,0 55,7 13,4 28,0 145,0
170 Z 18,9 33,0 1,2 2,5 20,1 35,5 25,2 64,0 80,2 19,7 39,2 215,0
9
DUOHEATINGHEATING
Mod.
TWinC30 °C 40 °C 45 °C 55 °C 60 °C 70 °C
∆T ∆T ∆T ∆T ∆T ∆T
TWoutC 35 °C 45 °C 55 °C 65 °C 70 °C 80 °C
TAE Pt Pac Patot COP Pt Pac Patot COP Pt Pac Patot COP Pt Pac Patot COP Pt Pac Patot COP Pt Pac Patot COP
112 Z
-20,00/-20,27
13,55
4,39 5,03 2,69
12,68
4,64 5,29 2,40
12,68
4,84 5,48 2,31
11,98
5,01 5,66 2,12
11,52
5,06 5,70 2,02
10,58
5,15 5,79 1,83
-15,00/-15,5 4,08 4,68 2,89 4,36 4,96 2,55 4,59 5,19 2,44 4,79 5,40 2,22 4,85 5,46 2,11 4,98 5,58 1,90
-7,00/-8,08 3,70 4,24 3,19 4,02 4,56 2,78 4,29 4,83 2,63 4,53 5,07 2,37 4,61 5,15 2,24 4,77 5,31 1,99
-5,00/-5,40 3,58 4,10 3,30 3,91 4,43 2,86 4,18 4,71 2,69 4,44 4,96 2,41 4,53 5,05 2,28 4,70 5,23 2,03
0,00/-0,53 3,27 3,76 3,60 3,63 4,12 3,08 3,94 4,42 2,87 4,22 4,71 2,55 4,37 4,85 2,37 4,66 5,15 2,06
3,00/2,35 3,09 3,55 3,81 3,47 3,93 3,23 3,79 4,25 2,98 4,09 4,55 2,63 4,27 4,73 2,43 4,64 5,10 2,08
7,00/6,20 2,85 3,28 4,13 3,25 3,68 3,45 3,60 4,03 3,15 3,92 4,35 2,75 4,15 4,58 2,52 4,61 5,03 2,10
10,00/8,20 2,67 3,08 4,40 3,09 3,49 3,63 3,45 3,86 3,29 3,91 4,31 2,78 4,13 4,54 2,54 4,58 4,98 2,12
15,00/10,80 2,44 2,80 4,83 2,88 3,24 3,91 3,40 3,76 3,37 3,89 4,26 2,81 4,11 4,47 2,57 4,54 4,90 2,16
20,00/15,09 2,09 2,42 5,60 2,61 2,93 4,32 3,35 3,67 3,45 3,88 4,20 2,85 4,08 4,41 2,61 4,50 4,82 2,19
125 Z
-20,00/-20,27
26,68
8,83 9,75 2,74
25,58
9,33 10,25 2,50
25,59
9,77 10,69 2,39
23,96
10,08 11,00 2,18
23,03
10,17 11,09 2,08
21,17
10,36 11,28 1,88
-15,00/-15,5 8,18 9,04 2,95 8,76 9,63 2,66 9,25 10,12 2,53 9,63 10,50 2,28 9,75 10,62 2,17 9,99 10,86 1,95
-7,00/-8,08 7,44 8,21 3,25 8,08 8,85 2,89 8,64 9,42 2,72 9,09 9,87 2,43 9,26 10,03 2,30 9,58 10,36 2,04
-5,00/-5,40 7,19 7,94 3,36 7,85 8,60 2,97 8,44 9,19 2,78 8,92 9,67 2,48 9,10 9,85 2,34 9,45 10,20 2,08
0,00/-0,53 6,58 7,27 3,67 7,31 8,00 3,20 7,94 8,64 2,96 8,49 9,18 2,61 8,80 9,49 2,43 9,41 10,11 2,09
3,00/2,35 6,22 6,88 3,88 6,97 7,63 3,35 7,65 8,31 3,08 8,23 8,88 2,70 8,62 9,27 2,48 9,39 10,05 2,11
7,00/6,20 5,74 6,35 4,20 6,53 7,14 3,58 7,26 7,87 3,25 8,18 8,79 2,73 8,57 9,18 2,51 9,36 9,97 2,12
10,00/8,20 5,38 5,95 4,48 6,21 6,78 3,77 7,22 7,79 3,28 8,14 8,71 2,75 8,54 9,11 2,53 9,34 9,92 2,13
15,00/10,80 4,91 5,43 4,92 6,15 6,67 3,84 7,15 7,67 3,34 8,07 8,59 2,79 8,48 9,00 2,56 9,30 9,82 2,16
20,00/15,09 4,90 5,36 4,98 6,09 6,55 3,91 7,08 7,54 3,39 8,00 8,47 2,83 8,42 8,89 2,59 9,27 9,73 2,18
145 Z
-20,00/-20,27
47,85
14,77 16,61 2,88
45,86
15,91 17,76 2,58
45,94
17,34 19,19 2,39
43,15
18,09 19,94 2,16
41,45
18,26 20,10 2,06
38,03
18,59 20,44 1,86
-15,00/-15,5 14,21 15,94 3,00 15,73 17,46 2,63 16,56 18,29 2,51 17,30 19,03 2,27 17,53 19,26 2,15 17,98 19,71 1,93
-7,00/-8,08 13,37 14,92 3,21 14,52 16,07 2,85 15,51 17,06 2,69 16,34 17,89 2,41 16,64 18,19 2,28 17,24 18,79 2,02
-5,00/-5,40 12,92 14,42 3,32 14,12 15,62 2,94 15,14 16,64 2,76 16,02 17,52 2,46 16,35 17,85 2,32 16,99 18,49 2,06
0,00/-0,53 11,81 13,19 3,63 13,12 14,51 3,16 14,25 15,64 2,94 15,24 16,63 2,60 15,63 17,01 2,44 16,39 17,78 2,14
3,00/2,35 11,18 12,49 3,83 12,51 13,83 3,32 13,73 15,05 3,05 14,76 16,08 2,68 15,19 16,50 2,51 16,03 17,35 2,19
7,00/6,20 10,31 11,53 4,15 11,75 12,97 3,54 12,98 14,21 3,23 14,14 15,37 2,81 14,65 15,87 2,61 15,65 16,88 2,25
10,00/8,20 9,66 10,81 4,42 11,16 12,31 3,73 12,50 13,66 3,36 13,69 14,85 2,91 14,34 15,50 2,67 15,64 16,79 2,27
15,00/10,80 8,82 9,85 4,86 10,40 11,43 4,01 11,82 12,85 3,57 13,10 14,14 3,05 13,94 14,98 2,77 15,61 16,65 2,28
20,00/15,09 7,56 8,48 5,64 9,26 10,18 4,51 10,80 11,72 3,92 13,05 13,97 3,09 13,90 14,82 2,80 15,58 16,50 2,30
170 Z
-20,00/-20,27
76,84
24,55 26,39 2,91
73,54
26,29 28,13 2,61
73,63
28,12 29,96 2,46
69,21
29,06 30,90 2,24
66,38
29,31 31,16 2,13
60,72
29,83 31,67 1,92
-15,00/-15,5 23,51 25,24 3,04 25,26 26,99 2,72 26,65 28,38 2,59 27,77 29,50 2,35 28,13 29,86 2,22 28,85 30,58 1,99
-7,00/-8,08 21,26 22,81 3,37 23,31 24,86 2,96 24,90 26,45 2,78 26,23 27,77 2,49 26,71 28,25 2,35 27,67 29,21 2,08
-5,00/-5,40 20,75 22,25 3,45 22,64 24,14 3,05 24,32 25,82 2,85 25,72 27,22 2,54 26,24 27,74 2,39 27,27 28,77 2,11
0,00/-0,53 18,98 20,37 3,77 21,06 22,45 3,28 22,88 24,26 3,03 24,46 25,84 2,68 25,08 26,46 2,51 26,31 27,69 2,19
3,00/2,35 17,91 19,23 4,00 20,11 21,43 3,43 22,01 23,33 3,16 23,71 25,03 2,77 24,38 25,70 2,58 25,73 27,04 2,25
7,00/6,20 16,54 17,77 4,33 18,85 20,07 3,66 20,90 22,12 3,33 22,72 23,94 2,89 23,47 24,69 2,69 24,97 26,19 2,32
10,00/8,20 15,50 16,66 4,61 17,89 19,05 3,86 20,07 21,23 3,47 21,99 23,14 2,99 22,80 23,95 2,77 24,41 25,56 2,38
15,00/10,80 14,14 15,18 5,06 16,67 17,71 4,15 18,97 20,01 3,68 21,02 22,06 3,14 21,90 22,94 2,89 23,66 24,70 2,46
20,00/15,09 12,14 13,06 5,89 14,85 15,78 4,66 17,33 18,26 4,03 19,59 20,51 3,37 20,58 21,50 3,09 22,56 23,48 2,59
HEATING PERFORMANCE IN WINTER SPACE HEATING AND HSW
Pt - Heating capacity [kW]PaC - Compressor power input [kW]Patot - Total power input [kW]TAE - Outdoor air temperature [°C] (dry bulb/wet bulb)TWoutC - Hot water out temperature [°C]TWinC - Hot water in temperature [°C]COP - Coefficient of Performance
Performance tables
10
DUOHEATINGHEATING
Operating limits
Version Operating ModeTa
Air conditioningheat exchanger
HSWheat exchanger
Tw out Tw out
Min Max Min Max Min Max
SR - SW Space heating -20 28 30 80 - -
SW Space heating and HSW production -20 28 30 80 30 80
SW HSW production -20 45 - - 30 80
Ta = Outdoor air temperature (°C)Tw out = Leaving water temperature from the heat exchanger (°C)
25
35
45
55
65
75
85
-20 -15 -10 -5 0 5 10 15 20 25 30
Leav
ing
hot w
ater
tem
per
atur
e (°
C)
Outdoor air temperature (°C)
80
Winter space heating and hsw production operating mode
11
DUOHEATINGHEATING
Inverter pumps flow rate pressure characteristics
AIR CONDITIONING SANITARY UTILITIES
The standard configuration of DUO is composed with inverter pumps. Here are shown the graphs to estimate the total prevalence in function of flow rate. It should be noted that the use of variable speed pumps is not intended to create plants with variable flow rate. In that case it should provide a secondary circuit, after the air condi-tioning tank, to change the flow rate of utilities of the plant (as you can see in the scheme).
BASIC VERSION MODELSSR - SW 112
The selected pumps, for which are showed the trends of prevalence in function of flow rate, ensure static prevalence until to tank of sani-tary utilities.
BASIC VERSION MODELSSW 112
AIR CONDITIONING
BASIC VERSION MODELSSR - SW 125
SANITARY UTILITIES
BASIC VERSION MODELSSW 125
0
1
2
3
4
5
6
7
8
9
0 1 2 3 4 5 6 7 8 9
Hea
d p
ress
ure
(m H
2O)
Q (m 3/h)
Max Frequency
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 11 12
Hea
d p
ress
ure
(m H
2O)
Q (m 3/h)
Max Frequency
12
DUOHEATINGHEATING
AIR CONDITIONING SANITARY UTILITIES
The trend of prevalence of inverter pump to manage great flow rates is represented with different curves, according the different percen-tual speeds of the pump. In this case, to manage a flow rate about 7,5 m3/h the pump ensures a total prevalence around 19 m and the speed is around 90% of the maximum.
BASIC VERSION MODELSSR - SW 145
BASIC VERSION MODELSSW 145
AIR CONDITIONING
BASIC VERSION MODELSSR - SW 170
SANITARY UTILITIES
BASIC VERSION MODELSSW 170
0
5
10
15
20
25
30
35
40
45
50
0 1 2 3 4 5 6 7 8 9 10 11 12
Hea
d p
ress
ure
(m. H
2O)
Q (m 3/h)
60%
70%
80%
100%
90%
Min. Frequency
0
5
10
15
20
25
30
35
40
45
50
55
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Hea
d p
ress
ure
(m.H
2O)
Q (m 3/h)
60%
70%
80%
100%
90%
Min. Frequency
Inverter pumps flow rate pressure characteristics
13
DUOHEATINGHEATING
Refrigerant pipings length
In the split versions of DUO the heating or cooling capacity is in function of the distance between indoor and outdoor units. In particular the heating or cooling capacity , according to the trend showed in the graph, decreases with increasing of the length of refrigerant pipings. In the graph it is possible to calculate the percentual decreasing (than nominal values).
92
93
94
95
96
97
98
99
100
5 7 9 11 13 15 17 19 21 23 25
Cap
acit
y [%
]
Outdoor - indoor distance [m]
14
DUOHEATINGHEATING
Correction tables
ETHYLENIC GLYCOL CORRECTION TABLE FOR PACKAGED VERSIONS
% Ethilene glicol weight 5% 10% 15% 20% 25% 30% 35% 40%Freezing temperature °C -2 -3,9 -6,5 -8,9 -11,8 -15,6 -19 -23,4
Suggested security limit °C 3 1 -1 -4 -6 -10 -14 -19
Cooling capacity coefficient - 0,995 0,99 0,985 0,981 0,977 0,974 0,971 0,968
Power input coefficient - 0,997 0,993 0,99 0,988 0,986 0,984 0,982 0,981
Flow rate coefficient - 1,003 1,01 1,02 1,033 1,05 1,072 1,095 1,124
Pressur dropo coefficient - 1,029 1,06 1,09 1,118 1,149 1,182 1,211 1,243
In order to calculate performance with glycoled solutions multiply main sizes by respective coefficients.
GLICOLE PERCENTAGE DEPENDING ON FREEZING TEMPERATURE FOR PACKAGED VERSIONS
% glycol according to the freezing temperatureFreezing temperature 0°C -5°C -10°C -15°C -20°C -25°C
% Ethilene glycol 5% 12% 20% 28% 35% 40%
SCALING CORRECTION TABLE FOR PACKAGED VERSIONS
mq °C/W Correction coefficient of cooling capacity Correction coefficient of power input0,44 1 1
0,88 0,97 0,99
1,76 0,94 0,98
In order to calculate performance with glycoled solutions multiply main sizes by respective coefficients.
15
DUOHEATINGHEATING
In the following water system is not included the use of booster pumps after the tank.M
UN
ITA'E
STE
RN
AU
NITA'
INTE
RN
A
T
T
T
T
RE
C
EW
R
IND
OO
RU
NIT
OU
TDO
OR
UN
IT
DEH
UM
IDIFIER
DE
UM
UD
IFICA
TOR
E
T
P1 PRIM
ARY PU
MP
P2 SO
LAR TH
ERMA
L PUM
PSC
D
RAIN
AG
ESF
VENT VA
LVESV
SAFETY VA
LVEG
R FILLIN
G G
ROU
PF
STEEL MESH
STRAIN
ERR
SHU
TT OFF VA
LVE
M
3 WAY M
IXIN
G VA
LVET
TEMPERATU
RE PROBE
EWR
EVAPO
RATOR/CO
ND
ENSER
REC
RECOVERY
SR SA
NITA
RY WATER TA
NK
SU
CLIM
ATIZATION
WATER TA
NK
ET EX
PAN
SION
VESSEL
Plant scheme with accessories
16
DUOHEATINGHEATING
The following water system involves the use of booster pumps after the tank and it allows to realize a variable flow rate plant.
Plant scheme with accessories
T
M
UN
ITA'E
STE
RN
AU
NITA'
INTE
RN
A
T
T
T
M
T
T
T
RE
C
EW
R
IND
OO
RU
NIT
OU
TDO
OR
UN
IT
DE
HU
MID
IFIERD
EU
MU
DIFIC
ATO
RE
P1 PRIM
ARY PU
MP
P2 SECO
ND
ARY PU
MP
P3 REC
IRCU
LATION
PUM
PP4
SOLA
R THERM
AL PU
MP
SC
DRA
INA
GE
SF VEN
T VALVE
SV SA
FETY VALVE
GR
FILLING
GRO
UP
F STEEL M
ESH STRA
INER
VR C
HEC
K VALVE
R SH
UTT O
FF VALVE
M
3 WAY M
IXIN
G VA
LVET
TEMPERATU
RE PROBE
EWR
EVAPO
RATOR/CO
ND
ENSER
REC
RECOVERY
SR A
CS SA
NITA
RY WATER TA
NK
SU
CLIM
ATIZATION
WATER TA
NK
ET EX
PAN
SION
VESSEL
17
DUOHEATINGHEATING
General arrangement drawings and weights
SPLIT VERSION - INDOOR UNITS
8
56
2
1
4
3
753
43.5
43.5
519
51.5
9
52.5649
606
1340
7
112 Z ÷ 125 Z
➀ Water inlet for air conditioning➁ Water outlet for air conditioning➂ Inlettosanitarycircuit*➃ Outlettosanitarycircuit*➄ Liquid line
➅ Gas line➆ Equalizer line➇ Power supply➈ Holes for antivibration absorbers Ø 8* onlyforSW
Model 112 Z 125 ZSR kg 200 270SW kg 220 300
18
DUOHEATINGHEATING
General arrangement drawings and weights23
704
23
1301240130
750
9
8
2
1
1600
1500
3
65
4
7
SPLIT VERSION - INDOOR UNITS
145 Z ÷ 170 Z
➀ Water inlet for air conditioning➁ Water outlet for air conditioning➂ Inlettosanitarycircuit*➃ Outlettosanitarycircuit*➄ Liquid line
➅ Gas line➆ Equalizer line➇ Power supply➈ Holes for antivibration absorbers Ø 8* onlyforSW
Model 145 Z 170 ZSR kg 495 655SW kg 550 750
19
DUOHEATINGHEATING
General arrangement drawings and weights
SPLIT VERSION - OUTDOOR UNITS
300
1550 590
510
300
300
1595
1635
40940300 3002 1
3
4
112 Z
➀ Gas line➁ Liquid line➂ Equalizer line➃ Holes for antivibration absorbers
Model 112 ZSR kg 370SW kg 370
20
DUOHEATINGHEATING
Disegni dimensionali e pesi
SPLIT VERSION - OUTDOOR UNITS
1990
500 500
500
1009
1100
407
876
995
23
1
1100
1309
4
125 Z
General arrangement drawings and weights
➀ Gas line➁ Liquid line➂ Equalizer line➃ Holes for antivibration absorbers
Model 125 ZSR kg 430SW kg 430
21
DUOHEATINGHEATING
Disegni dimensionali e pesi
SPLIT VERSION - OUTDOOR UNITS
General arrangement drawings and weights
➀ Gas line➁ Liquid line➂ Equalizer line➃ Holes for antivibration absorbers
2198
2421
2090
1100
1000
500
500
500
400
1028 1056
876
23
1
4
Model 145 Z 170 ZSR kg 660 820SW kg 660 820
145 Z - 170Z
22
DUOHEATINGHEATING
VERSION CONNECTION 112 Z 125 Z 145 Z 170 Z
SR AIR CONDITIONING 1"½ 1"½ 2"½ 2"½
SWAIR CONDITIONING 1”½ 1”½ 2”½ 2”½
HSW 1”½ 1”½ 2”½ 2”½
General arrangement drawings and weights
WATER CONNECTIONS
VERSION CONNECTIONU.I./U.E.
112 Z 125 Z 145 Z 170 Z
SRDELIVERY 12 12 22 28
LIQUID 10 12 16 22
SWDELIVERY 12 12 22 28
LIQUID 10 12 16 22
REFRIGERANT CONNECTIONS - SPLIT VERSIONS
The values in the above table are expressed in millimeters.
CONNECTIONS SCHEME
1
2
LINEA DI ASPIRAZIONE SUCTION LINE
LINEA DEL LIQUIDOLIQUID LINE
3 LINEA DI EQUALIZZAZIONEEQUALIZATION LINE
1
23
SCHEMA CONNESSIONE DUO VERSIONI SM - SH
SIFONI SOLO PER LA LINEA DI ASPIRAZIONE
1
2
LINEA DI MANDATA DISCHARGE LINE
LINEA DEL LIQUIDOLIQUID LINE
1
2
SCHEMA CONNESSIONE DUO VERSIONI SW - SR
SIFONI SOLO PER LA LINEA DI MANDATASIPHON ONLY FOR DISCHARGE LINESIPHON ONLY FOR SUCTION LINE
VERSIONS SW/SR
23
DUOHEATINGHEATING
General arrangement drawings and weights
LIFTING SCHEMES
112 Z ÷ 125 Z
145 Z ÷ 170 Z
INDOOR UNITS
24
DUOHEATINGHEATING
112 Z
125 Z
General arrangement drawings and weights
LIFTING SCHEMES OUTDOOR UNITS
25
DUOHEATINGHEATING
145 Z ÷ 170 Z
General arrangement drawings and weights
LIFTING SCHEMES OUTDOOR UNITS
26
DUOHEATINGHEATING
NOTETechnical data and dimensions are not binding. Thermocold Costruzioni S.r.l. reserves the right to make necessary changes without notice.
Cod. BT-DUO-REV02-0217-UK
DUO
RESIDENTIAL & LIGHT COMMERCIALHEATINGHEATING