Ferroli HXA SERIES User manual

HXA
AIR - WATER
HEAT PUMPS
FOR OUTDOOR I STALLATIO
TECH ICAL MA UAL
R410A

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TABLE OF CONTENT
GENERAL FEATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
GE ERAL I STRUCTIO S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
DECLARATIO OF CO FORMITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
U IT DATAPLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
U IT DESCRIPTIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
U IT IDE TIFICATIO CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
DESCRIPTIO OF COMPO E TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
CO TROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
OPTIO S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
TECHNICAL DATA AND PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TECH ICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
OMI AL PERFORMA CES - LOW TEMPERATURE PLA TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
OMI AL PERFORMA CES - MEDIUM TEMPERATURE PLA TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
HEATI G PERFORMA CES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
COOLI G PERFORMA CES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PLA T SIDE HYDRAULIC PERFORMA CES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
OPERATI G LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
OISE LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
OVERALL DIME SIO S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
MI IMUM OPERATI G AREA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

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Unit description
GENERAL FEATURE
Unit identification code
This series of air-water heat pumps satisfies the heating,
cooling and domestic hot water production requirements of
residential plants of small and medium size.
All the units are suitable for outdoor installation and can be
applied to fan coil plants, radiant floor plants and high effi-
ciency radiators plants.
The control system allows to manage not only the refrigerant
circuit but the whole plant with the possibility to choose diffe-
rent solutions both for the heating and cooling plant and for the
domestic hot water management. The possibility of solar
panels or other heating sources integration is also available.
The heating function optimizes the flow water temperature
according both to the ambient temperature and to the outdoor
temperature through climatic curves adaptable to the building
features. It’s possible to manage a storage tank and two inde-
pendent circuits (a direct one and a mixed one).
The domestic hot water management allows to control the
three way valve, the storage tank and the anti-legionella
cycles (if necessary).
The cooling function can be realized through “active cooling”
(refrigerant circuit inversion). When the unit is used in radiant
floor plants, to avoid condensate generation, a room humidity
sensor can be installed.
The internal programmer clock allows to define different
daily switching programs for heating, cooling and domestic hot
water production.
The refrigerant circuit, contained in a compartment protected
from the air flow to simplify the maintenance operations, is
equipped with rotary or scroll compressor (according to the
model) mounted on damper supports, brazed plate heat
exchanger, thermostatic expansion valve, reverse cycle valve,
axial fans with safety protection grilles, finned coil made of
copper pipes and aluminium louvered fins. The circuit is pro-
tected by high and low pressure switches and differential pres-
sure switch on the plate heat exchanger.
The plate heat exchanger and all the hydraulic pipes are ther-
mally insulated in order to avoid condensate generation and
to reduce thermal dispersions.
All three-phase power supply units are provided with a phase
presence and correct sequence controller device.
All the units are accurately built and individually tested in the
factory. Only electric and hydraulic connections are required
for installation.
The codes that identify the units and the meaning of the letters used are described below.
Power supply
1- 230V - 1 - 50 Hz
5- 400V - 3 - 50 Hz
Refrigerant type
0- R410A
Unit model
° compressors
VB - Base Version
Unit version
Unit type
IP - Units suitable for
hydronic plant installation
operating as reversible heat
pumps
HXA IP 7.1 VB AB 0 M 1
Operating range
M- Medium temperature.
The unit is suitable to pro-
duce water at medium tem-
perature
AB - Base setting up
Acoustic setting up

GENERAL FEATURE
Description of components
External structure. Basement, supporting structure and late-
ral panels are made of galvanized and painted sheet-steel
(colour RAL 7035) to guarantee good resistance to atmo-
spheric agents. Accessibility to internal parts is possible remo-
ving the frontal panel. For extraordinary manteinances also
the rear panel can be removed.
Refrigerant circuit. It is contained inside a compartment
separated from the air flow to simplify maintenance and con-
trol operations.
The hermetic rotary or scroll (according to the model) com-
pressor (1) is mounted on damper supports and is protected
against overtemperatures and overcurrents. It is equipped
with an electrcal heater, that is activated when the compres-
sor turns off, to keep the compressor crankcase oil tempera-
ture high enough to prevent migration of the refrigerant during
winter stops and to evaporate any liquid present in the crank-
case, in order to prevent possible liquid rushes on starting.
The plant side heat exchanger (2) is a brazed stainless steel
plate heat exchanger, properly insulated to avoid condensate
generation and to minimize thermal losses, and protected by
a differential pressure switch that detects whatever water flow
lack.
The source side heat exchanger (3) is a finned coil realized
with grooved copper pipes and aluminium fins with notched
profile to increase the heat exchange coefficient. A tray is
obtained in the basement to collect the condensate generated
in heating mode.
The expansion device (4), a thermostatic expansion valve
with external equalizer, allows the unit to adjust itself to the dif-
ferent operating conditions keeping steady the set superhea-
ting.
The refrigerant circuit of each unit contains moreover solid
core hermetic filter dryer (5) to restrain impurity and moistu-
re residuals that could be present in the circuit, high and low
pressure switches in order to assure the compressor to ope-
rate inside the permitted limits, 4 way reverse cycle valve (6)
to allow operating mode change reversing the refrigerant flow,
liquid receiver (7) to compensate the different refrigerant
charge required in heating and in cooling mode and pressure
connections SAE 5/16” - U F 1/2” - 20 equipped with pin,
gasket and blind nut, as required for the use of R410A refri-
gerant (they allow the complete check of the refrigerant circuit:
compressor inlet pressure, compressor outlet pressure and
thermostatic expansion valve upstream pressure).
The axial fans (8) are contained in a sheet nozzle and are
equipped with a safety grille.
Hydraulic circuit. All the pipes are thermally insulated to
avoid condensate generation and minimize thermal losses.
The circuit can be equipped with a standard or a high head cir-
culation pump (option). In that case the circuit is also equip-
ped with expansion vessel and air vents.
Electrical panel. It contains all the power, control and security
components necessary to guarantee the unit to work properly.
The unit is managed by a microprocessor controller to
which all the electrical loads and the control devices are con-
nected. The user interface, to be placed indoor, allows to view
and to modify, if necessary, all the parameters of the unit.
All the units are supplied with an outdoor temperature sen-
sor, to be installed outside, in order to realize the climatic con-
trol.
6
4
3
2
1
8
7
5
6

7
GENERAL FEATURE
Control system
FS
The controller is able to manage up to two zones in heating
(one by means of a mixed circuit and the other by means of a
direct circuit) and one zone in cooling (by means of a mixed
circuit).
It’s possible to realize more complex plants connecting to the
heat pump controller further expansion modules in order to
extend without limits the number of zones to be managed.
For each zone the following parameters can be set :
- set point
- daily or weekly operating time table
- climatic control curve
- room control sensor : it can be in common with the other
zones or independent (in that case it’s necessary to install
an additional room thermostat)
The microprocessor controller is able to manage not only the
unit itself but also all that components of the plant which allow
to realize a complete system.
The main functions of the control system are :
- room temperature control according to the outdoor tempe-
rature (climatic control)
- domestic hot water production (management of 3 way
valve, storage tank, anti legionella cycles)
- management of a heating and/or cooling mixed circuit
(pump and 3 way mixing valve)
- management of a heating direct circuit (only pump)
- management of a storage tank for heating and/or cooling
- management of electrical heaters for heating and dome-
stic hot water (3 steps logic)
- solar panels integration
- room humidity control for cooling with radiant systems
- internal programmer clock (for heating, cooling and dome-
stic hot water)
- digital input for electrical energy low tariff
- alarm memory management and diagnostic
- compressor and pump operating hour counter
- possibility to manage more units in cascade (maximum 16)
Besides the user interface of the unit to be placed indoor,
wired or wireless remote thermostats are available which
allow to control all
the operating para-
meters of the unit
and to acquire the
temperature in the
different zones in
order to realize a
more precise and
comfortable con-
trol.
The unit controller
is able to manage
a lot of different
plant solutions
enabling automati-
cally the necessary
control algorythms
according to the
components which
have been connec-
ted. The manage-
ment of such components is possible through additional
expansion modules which communicate with the unit by
means of an internal bus and provide all the inputs and out-
puts required to fulfil a complete system.
Room temperature
20.5 C
18:28

GENERAL FEATURE
Options
Plant side
flow rate
management
tandard pump Allows the circulation of the water on the plant side.
High head pump Allows the circulation of the water on the plant side and guarantees a higher
available static head.
Integrative electrical heaters Integrate or replace the heating power supplied by the heat pump and are
managed by the unit controller with a 3 step logic.
oft starter Reduces the compressor start current.
The controller flexibility and the big number of options
available allow to get, for each model, a lot of diffe-
rent configurations that integrate inside the heat
pump many components of the plant and allow to
realize compact and tested installations.
In order to select the right configuration it is neces-
sary to define the type of plant to which the heat
pump will be connected, both for what concerning the
heating and cooling circuits, and for what concerning
the domestic hot water management.
Reversible heat pump (IP) without options
Option “Plant side flow rate management”
Pump (standard or high head)
Option “Integrative electrical heaters”
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GENERAL FEATURE
Accessories
Rubber vibration dampers Allow to reduce the transmission to the unit support plane of the mechanical vibrations generated by the com-
pressor and by the fans in their normal operating mode.
Coil protection grille Protects the external surface of the finned coil.
Remote thermostat Allows operating mode selection and set point adjustment. The on board temperature sensor can be used in
order to realize a climatic control.
Remote control
(wired or wireless)
Replicates all the control and visualization functionalities of the controller installed on the unit. The on board
temperature sensor can be used in order to realize a climatic control.
Wireless transmitter Connected to the unit controller, allows to communicate with wireless remote control and wireless outdoor
temperature sensor.
Wireless repeater Extends wireless operating range.
Wireless adaptor for out-
door temperature sensor Allows to transform the wired outdoor temperature sensor, standard for all the units, in a wireless sensor.
Condensate sensor In cooling mode it allows the minimum flow temperature control when condensate generation occurs.
Room hygrostat In cooling mode it allows the minimum flow temperature control according to the room humidity.
Room humidity sensor
(with or without display)
In cooling mode it allows the minimum flow temperature control according to the room dew point, calculated
from the measured room humidity.
Transformer
230V / 24V - 3VA It assures the correct power supply for the condensate sensor and for the room humidity sensor.

TECHNICAL DATA AND PERFORMANCE
10
Technical data
Frame 1 2 3
Model 7.1 8.1 10.1 12.1 15.1 18.1 U.M.
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50
400 - 3 - 50
230 - 1 - 50
400 - 3 - 50 400 - 3 - 50 400 - 3 - 50 V-ph-Hz
Refrigerant
Type R410A R410A R410A R410A R410A R410A -
Compressor
Type rotary rotary scroll scroll scroll scroll -
Quantity 1 1 1 1 1 1 n°
Power steps 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 %
Oil charge 1,13 1,13 1,20 1,80 1,80 1,80 kg
Plant side heat exchanger
Type stainless steel
brazed plates
stainless steel
brazed plates
stainless steel
brazed plates
stainless steel
brazed plates
stainless steel
brazed plates
stainless steel
brazed plates -
Quantity 1 1 1 1 1 1 n°
Water volume 0,53 0,53 0,53 0,53 0,67 0,84 l
ource side heat exchanger
Type finned
coil
finned
coil
finned
coil
finned
coil
finned
coil
finned
coil -
Quantity 1 1 1 1 1 1 n°
Frontal surface 0,60 0,60 0,77 0,77 0,98 0,98 m2
Fans
Type axial axial axial axial axial axial -
Quantity 1 1 1 1 2 2 n°
Diameter 450 450 500 500 500 500 mm
Maximum rotational speed 900 900 900 900 900 900 rpm
Toatal installed power 0,15 0,15 0,21 0,21 0,42 0,42 kW
Plant side hydraulic circuit
Expansion vessel volume 10 10 10 10 10 10 l
Plant pump - standard (option)
Type 3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
multi stage
pump
multi stage
pump -
Quantity 1 1 1 1 1 1 n°
Installed power 0,15 0,15 0,15 0,15 0,25 0,25 kW
Plant pump - high head (option)
Type 3 speed
glandless pump
3 speed
glandless pump
multi stage
pump
multi stage
pump
multi stage
pump
multi stage
pump -
Quantity 1 1 1 1 1 1 n°
Installed power 0,20 0,20 0,25 0,25 0,35 0,35 kW
Integrative electrical heaters (option)
Total installed power 6,6 6,6 6,6 6,6 6,6 6,6 kW
Power steps 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 %

11
TECHNICAL DATA AND PERFORMANCE
IP
Heating A7W35 ( source : air in 7°C d.b. 6°C w.b. / plant : water in 30°C out 35°C )
Heating capacity 6,92 8,03 10,2 11,9 15,7 18,6 kW
Power input 1,87 2,28 2,86 3,39 4,27 5,28 kW
COP 3,70 3,52 3,57 3,51 3,68 3,52 -
Water flow rate plant side 1183 1371 1731 2023 2674 3171 l/h
Pressure drops plant side 19 25 36 47 50 46 kPa
Heating A2W35 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 30°C out 35°C )
Heating capacity 5,74 6,66 8,42 9,84 13,0 15,5 kW
Power input 1,84 2,25 2,81 3,32 4,18 5,18 kW
COP 3,12 2,96 3,00 2,96 3,11 2,99 -
Water flow rate plant side 982 1138 1437 1678 2211 2640 l/h
Pressure drops plant side 14 18 27 34 36 34 kPa
Cooling A35W18 ( source : air in 35°C d.b. / plant : water in 23°C out 18°C )
Cooling capacity 7,34 8,50 10,7 12,5 16,6 19,6 kW
Power input 2,39 2,91 3,64 4,31 5,45 6,74 kW
EER 3,07 2,92 2,94 2,90 3,05 2,91 -
Water flow rate plant side 1266 1467 1855 2164 2868 3400 l/h
Pressure drops plant side 22 28 41 52 56 51 kPa
IP
Heating A7W45 ( source : air in 7°C d.b. 6°C w.b. / plant : water in 40°C out 45°C )
Heating capacity 6,78 7,87 9,95 11,7 15,4 18,2 kW
Power input 2,22 2,71 3,38 4,01 5,06 6,25 kW
COP 3,05 2,90 2,94 2,92 3,04 2,91 -
Water flow rate plant side 1154 1339 1690 1981 2612 3090 l/h
Pressure drops plant side 18 24 35 45 48 43 kPa
Heating A2W45 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 40°C out 45°C )
Heating capacity 5,60 6,50 8,21 9,61 12,7 15,1 kW
Power input 2,19 2,68 3,33 3,94 4,97 6,16 kW
COP 2,56 2,43 2,47 2,44 2,56 2,45 -
Water flow rate plant side 954 1106 1397 1632 2151 2561 l/h
Pressure drops plant side 13 17 25 33 35 32 kPa
Cooling A35W7 ( source : air in 35°C d.b. / plant : water in 12°C out 7°C )
Cooling capacity 6,12 7,10 8,95 10,4 13,8 16,4 kW
Power input 2,31 2,81 3,51 4,15 5,24 6,49 kW
EER 2,65 2,53 2,55 2,51 2,63 2,53 -
Water flow rate plant side 1054 1222 1543 1802 2385 2831 l/h
Pressure drops plant side 16 20 30 39 42 38 kPa
NOMINAL performances - low temperature plants
NOMINAL performances - medium temperature plants
Data declared according to EN 14511. The values are referred to units without options or accessories.
Frame 1 2 3
Model 7.1 8.1 10.1 12.1 15.1 18.1 U.M.
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50
400 - 3 - 50
230 - 1 - 50
400 - 3 - 50 400 - 3 - 50 400 - 3 - 50 V-ph-Hz
Frame 1 2 3
Model 7.1 8.1 10.1 12.1 15.1 18.1 U.M.
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50
400 - 3 - 50
230 - 1 - 50
400 - 3 - 50 400 - 3 - 50 400 - 3 - 50 V-ph-Hz

0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
-15 -10 -5 0 5 10 15 20
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
-15 -10 -5 0 5 10 15 20
TECHNICAL DATA AND PERFORMANCE
12
The graphs allow to get the corrective factors to be
applied to the nominal performances in order to
obtain the real performances in the selected opera-
ting conditions.
The reference nominal condition is :
A7W35
source : air in 7°C d.b. 6°C w.b.
plant : water in 30°C out 35°C
HEATING performances
Outlet temperature
plant side :
A = 55°C
B = 45°C
C = 35°C
D = 25°C
Heating capacity
Inlet air temperature w.b. [°C]
Power input
Inlet air temperature w.b. [°C]
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
-15 -10 -5 0 5 10 15 20
COP
Inlet air temperature w.b. [°C]
C
B
D
A
B
C
A
D
CB DA

13
TECHNICAL DATA AND PERFORMANCE
COOLING performances
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
15 20 25 30 35 40 45 50
Cooling capacity
Inlet air temperature d.b. [°C]
0,5
0,6
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
15 20 25 30 35 40 45 50
Power input
Inlet air temperature d.b. [°C]
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
15 20 25 30 35 40 45 50
EER
Inlet air temperature d.b. [°C]
The graphs allow to get the corrective factors to be
applied to the nominal performances in order to
obtain the real performances in the selected opera-
ting conditions.
The reference nominal condition is :
A35W7
source : air in 35°C d.b.
plant : water in 12°C out 7°C
Outlet temperature
plant side :
A = 24°C
B = 18°C
C = 12°C
D = 7°C
C
B
D
A
C
B
D
A
CB DA

TECHNICAL DATA AND PERFORMANCE
14
0
10
20
30
40
50
60
0 500 1000 1500 2000 2500 3000 3500 4000
Flow rate [ l/h ]
Pressure drops [ kPa ]
12.1
15.1
10.1
18.1
8.1
Pressure drops - unit without options
0
10
20
30
40
50
60
0 500 1000 1500 2000 2500 3000 3500 4000
Flow rate [ l/h ]
Pressure drops [ kPa ]
Pressure drops to be added - unit with option “Integrative electrical heaters”
7.1
Plant side hydraulic performances
The graphs are referred to units operating with water at the temperature of 10°C (density 1000 kg/m3).

15
TECHNICAL DATA AND PERFORMANCE
0
20
40
60
80
100
120
140
160
180
0 500 1000 1500 2000 2500 3000 3500 4000
Flow rate [ l/h ]
Available static head [ kPa ]
Available static head - unit with option “Plant side flow rate management” : “ tandard pump”
0
20
40
60
80
100
120
140
160
180
0 500 1000 1500 2000 2500 3000 3500 4000
Flow rate [ l/h ]
Available static head [ kPa ]
Available static head - unit with option “Plant side flow rate management” : “High head pump”
10.1
12.1
18.1
15.1
8.1
7.1
18.1
15.1
12.1
10.1
8.1
7.1
The graphs are referred to units operating with water at the temperature of 10°C (density 1000 kg/m3).

TECHNICAL DATA AND PERFORMANCE
16
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50
The graphs reported below show the operating area inside which the correct working of the unit is guaranteed.
HEATING
Inlet air temperature d.b. [°C]
Outlet temperature - plant side [°C]
Operating limits
-5
0
5
10
15
20
25
30
35
40
45
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50
COOLING
Inlet air temperature d.b. [°C]
Outlet temperature - plant side [°C]
Temperature difference between unit inlet and outlet Plant side
∆T max Maximum value 11 °C
∆T min Minimum value 3 °C

17
TECHNICAL DATA AND PERFORMANCE
Electrical data
Noise levels
Reference conditions
Performances referred to units operating in heating mode at nominal conditions A7W35.
Unit placed in free field on reflecting surface (directional factor equal to 2).
The sound power level is measured according to ISO 3744 standard.
The sound pressure level is calculated according to ISO 3744 and is referred to a distance of 1 meter from the external surface of the unit.
Model
ound power levels [dB]
by octave bands [Hz]
ound power
level
ound pressure
level at 1 m
63 125 250 500 1000 2000 4000 8000 [dB] [dB(A)] [dB(A)]
7.1 74,6 72,5 70,8 67,1 63,6 59,4 53,7 46,2 78 69 55
8.1 74,6 72,5 70,8 67,1 63,6 59,4 53,7 46,2 78 69 55
10.1 77,4 75,3 73,6 69,9 66,4 62,2 56,5 49,0 81 72 57
12.1 77,4 75,3 73,6 69,9 66,4 62,2 56,5 49,0 81 72 57
15.1 79,5 77,4 75,7 72,0 68,5 64,3 58,6 51,1 83 74 59
18.1 79,5 77,4 75,7 72,0 68,5 64,3 58,6 51,1 83 74 59
Frame 123
Model 7.1 8.1 10.1 12.1 15.1 18.1 U.M.
Unit
Integrative electrical heaters (option)
Plant side pump - standard (option)
Plant side pump - high head (option)
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 - - V-ph-Hz
F.L.A. Maximum total current input 13,4 17,1 22,0 24,8 - - A
F.L.I. Maximum total power input 2,9 3,7 4,7 5,3 - - kW
M.I.C.
Maximum total start current 82 112 141 174 - - A
Maximum total start current
with soft starter (option) 41 43 49 59 - - A
Power supply - - 400 -3 - 50 400 -3 - 50 400 -3 - 50 400 -3 - 50 V-ph-Hz
F.L.A. Maximum total current input - - 8,1 9,0 11,1 13,9 A
F.L.I. Maximum total power input - - 4,7 5,3 6,2 8,0 kW
M.I.C.
Maximum total start current - - 54 69 87 106 A
Maximum total start current
with soft starter (option) - - 33 40 48 55 A
Power supply
230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50
V-ph-Hz
400 -3 - 50 400 -3 - 50 400 -3 - 50 400 -3 - 50 400 -3 - 50 400 -3 - 50
F.L.A.
Maximum total current input
( 230V - 1 - 50Hz ) 28,7 28,7 28,7 28,7 28,7 28,7 A
Maximum total current input
( 400V - 3 - 50Hz ) 9,5 9,5 9,5 9,5 9,5 9,5 A
F.L.I. Maximum total power input 6,6 6,6 6,6 6,6 6,6 6,6 kW
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz
F.L.A. Maximum total current input 0,8 0,8 0,8 0,8 1,3 1,3 A
F.L.I. Maximum total power input 0,15 0,15 0,15 0,15 0,25 0,25 kW
Power supply 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz
F.L.A. Maximum total current input 1,0 1,0 1,3 1,3 1,8 1,8 A
F.L.I. Maximum total power input 0,20 0,20 0,25 0,25 0,35 0,35 kW

TECHNICAL DATA AND PERFORMANCE
18
Weights
Components weights
Transport weights
Operating weights
Frame 1 2 3
Model 7.1 8.1 10.1 12.1 15.1 18.1 U.M.
Unit without options 88 95 107 125 141 150 kg
Options
Plant side flow rate
management
Standard pump 6 6 6 6 13 13 kg
High head pump 8 8 13 13 14 14 kg
Integrative electrical heaters 4 4 4 4 4 4 kg
Unit without options 96 103 116 134 151 160 kg
Options
Plant side flow rate
management
Standard pump 6 6 6 6 13 13 kg
High head pump 8 8 13 13 14 14 kg
Integrative electrical heaters 4 4 4 4 4 4 kg
Unit without options 89 96 108 126 143 152 kg
Options
Plant side flow rate
management
Standard pump 7 7 7 7 14 14 kg
High head pump 9 9 14 14 15 15 kg
Integrative electrical heaters 5 5 5 5 5 5 kg
Rispect the free area around the unit as shown in figure in order
to guarantee a good accessibility and facilitate maintenance and
control operations.
Minimum operating area
Overall dimensions
BC
A
A 400 mm
B 600 mm
C 200 mm
1 Plant return
2Plant return with “Plant side flow rate management” option :
“Standard pump” or “High head pump”
3 Plant flow
4 Plant flow with “Integrative electrical heaters” option
D 60
E
F
G 269
52
L
356
97
56 994
H
102 710
394 179
Frame 1 Frame 2 Frame 3
-Standard
pump
High head
pump -
1 1” M 1” M 1” M
2 1” M 1” M 1” M
3 1” M 1” M 1” M
4 1” M 1” M 1” M
D 509 mm 759 mm 1059 mm
E 535 mm 646 mm 946 mm
F 177 mm 427 mm 727 mm
G 569 mm 819 mm 1119 mm
L 155 mm 155 mm 97 mm 97 mm
H 903 mm 1153 mm 1453 mm
1
3
2
4
1
3
2
4

19
The manufacturer declines all the responsabilities regarding inaccuracies contained in this manual, if due to printing or typing mistakes.
The manufacturer reserves the right to apply changes and improvements to the products at any time and without notice.

Ferroli spa ¬37047 San Bonifacio (Verona) Italy¬Via Ritonda 78/A
tel. [phone] ¬fax [phone] ¬www.ferroli.it
3QE26662