CLIMAVENETA i-CXW Series Operating manual

USER AND INSTALLATION MANUAL
EN - CASSETTE FAN COILS
EN) Please carefully read this manual
before operating the appliance.
2019/04
MODELS
a-CXW
i-CXW

2EN
CONTENTS
Before starting the unit, read the instruction manual carefully.
Warning! Especially important and/or hazardous operations.
Operations that can be carried out by the user.
Operations that must only be carried out by an installer or authorised technician.
Fundamental safety rules 3
Using and keeping the manual 3
Scope 4
Unit identification 4
Constructional characteristics 5
Accessories 6
Controls 8
Air flow-rate management 10
Technical data 11
Weights and dimensions 15
General information on receiving the unit 15
General warnings 16
Operating limits 18
Disposal 18
Technical specifications 19
Installation 22
Mechanical installation 24
Water connections 27
Water-side pressure drop 31
Electrical connections 33
Electric coil 34
Installation with valves supplied by the installer 35
Wiring diagrams 36
Accessories 54
General installation instructions and maintenance plan 61
Cleaning, maintenance, spare parts 66
Troubleshooting 66
Maintenance 66
Faults and solutions 67
Declaration of conformity 68

3
EN
The appliance must not be used by children or by unfit
persons without suitable supervision.
This appliance is intended to be used by experienced
or trained users in shops, light industry and on farms,
or for commercial use by non-experts.
Do not touch the appliance with bare feet or with wet
or damp parts of the body.
Do not tamper with or modify safety or control devices
without authorisation and instructions from the manu-
facturer.
Do not pull, detach or twist the cables connected to
the unit, even if disconnected from the mains power
supply.
Do not spray or throw water directly on the appliance.
Never place anything through the air intake or supply
grills.
Do not remove any protective devices without having
first disconnected the appliance from the power sup-
ply.
Do not dispose of or leave within reach of children
packaging materials, as they may represent a hazard.
Do not install in an explosive or corrosive atmosphere,
in damp places, outdoors or in very dusty environ-
ments.
The appliance can be used by persons over the age
of eight, or with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, as
long as they have been given supervision or instruc-
tion concerning safe use of the appliance.
Children must not play with the appliance.
Cleaning and maintenance operations intended for
the user must not be carried out by children without
supervision.
Before performing any work, make sure that:
1 - The appliance is not powered on.
2 - Close the coil water supply valve and wait for it to
cool down.
3 - Near the appliance or appliances, in an easily
accessible position, install a safety switch that dis-
connects power to the unit.
During installation, maintenance and repairs, for safe-
ty reasons, always observe the following require-
ments:
• Always use work gloves.
• Do not expose the unit to flammable gases.
• Do not place objects on the grills.
• Be sure to connect the earth.
When transporting the unit, it can be lifted by one
operator (for weights less than 30 kg) or by two oper-
ators.
Lift it slowly, making sure it does not fall.
Do not place objects or the hands into the fans.
Do not remove the safety labels affixed inside the
appliance.
If these are illegible, request their replacement.
When replacing components, always request original
spare parts.
• This instruction manual is intended for the user of
the unit, the owner and the installer, and must be
available for reference at all times.
• The manual is intended for the user, maintenance
technician and installer of the unit.
• The instruction manual serves to describe the
intended use of the unit according to its design, its
technical features, and to provide instructions for
correct use, cleaning and adjustment; it also pro-
vides important instructions for maintenance, on any
residual risks and in any case on any operations
that need to be carried out with special care.
• This manual is considered a part of the unit and
must be KEPT FOR FUTURE REFERENCE, until
the unit is decommissioned and dismantled.
• The instruction manual must be available for ref-
erence at all times and kept in a sheltered and dry
place.
• If lost or damaged, the user can request a new man-
ual from the manufacturer or its dealer, specifying
the model of the unit and its serial number, shown
on the rating plate.
• This manual reflects the state-of-the-art at the time
of writing; the manufacturer reserves the right to
update subsequent products and manuals without
being required to update previous versions.
The manufacturer declines all liability in the event of:
- improper or incorrect use of the unit;
- use not in accordance with what is expressly speci-
fied in this publication;
- severe failings in routine and recommended mainte-
nance;
- modifications or any unauthorised work on the unit;
- use of non-original spare parts or not specific for the
model;
- total or partial failure to comply with the instructions;
- exceptional events.
FUNDAMENTAL SAFETY RULES
USING AND KEEPING THE MANUAL

4EN
BEFORE INSTALLING THE APPLIANCE, READ
THIS MANUAL CAREFULLY
• Cassette fan coils are intended for use in commer-
cial and residential environments fitted with false
ceilings.
• Cassette fan coils are built exclusively for heating,
filtration and cooling; they are not suitable for any
other use.
The Cassette fan coils cannot be used:
• for outdoor air-conditioning
• for installation in humid environments
• for installation in explosive atmospheres
• for installation in corrosive atmospheres
Check that the room where the appliance is
installed does not contain substances that gener-
ate corrosion on the aluminium fins.
• The appliances are supplied with hot/cold water,
depending on whether the room is to be heated or
cooled.
• This appliance is intended for use by experienced or
trained users in shops, light industry and on farms,
or or commercial use by non-experts.
• Children must be supervised to ensure they do not
play with the appliance.
• The manufacturer/dealer cannot be held liable for
any loss or damage due to incorrect installation,
operation or maintenance of the cassette fan coils or
due to failure to comply with the instructions provid-
ed in this user manual, or if the necessary inspec-
tions, repairs and maintenance are not performed.
The rating label showing the manufacturer's data
and the type of unit is affixed to each unit.
• The appliance is packed in cardboard boxes.
• Once the appliance has been unpacked, check that
there is no damage and that it corresponds to the
order.
• In the event of damage or if the appliance does not
correspond to the order, contact the dealer, specify-
ing the serial number and model.
• The manufacturer declines all liability for any dam-
age due to improper use.
SCOPE
UNIT IDENTIFICATION

5
EN
INTAKE GRILL AND AIR DISTRIBUTION
Intake grills, frame and manually adjustable distribu-
tion louvres on each side, made from synthetic materi-
al (ABS), colour white RAL 9003.
INTERNAL SUPPORT STRUCTURE
Made from galvanised sheet metal, class-M1 polyeth-
ylene closed-cell foam insulation on the inside surface
(10 mm thick) and anti-condensation barrier on the
outside surface.
CONTROL DEVICES
A box installed outside of the appliance houses the
electronic control board, pump management and
inverter board (for the i-CXW version). The connection
terminals are easily accessible.
FAN ASSEMBLY (a-CXW models)
The motor-fan assembly, suspended on vibration
dampers, features particularly silent operation.
Radial fan with single-side intake, designed to opti-
mise performance using specially-shaped airfoil
blades that reduce turbulence, increasing efficiency
and minimising noise. The fans are coupled to a sin-
gle-speed electric motor whose windings are designed
to optimise performance and limit energy consump-
tion. Single-phase motor, operating voltage 230 V /
50-60 Hz, class B insulation and built-in circuit break-
er. Fan speed is controlled using an autotransformer:
3 different output voltages are connected.
FAN ASSEMBLY (i-CXW models)
The motor-fan assembly, suspended on vibration
dampers, features particularly silent operation.
Radial fan with single-side intake, designed to opti-
mise performance using specially-shaped airfoil
blades that reduce turbulence, increasing efficiency
and minimising noise.
The fans are coupled to brushless, permanent magnet
synchronous EC motors, with three-phase power sup-
ply, controlled by a reconstructed current signal with a
sinusoidal waveform (BLAC). The inverter board that
controls operation of the motors is powered at 230
volts, single-phase, and uses a switching system to
generate a three-phase power supply with modulated
frequency and waveform. The unit thus requires a sin-
gle-phase power supply, with voltage of 230 V / 50 Hz.
HEAT EXCHANGER COIL (a-CXW models)
Made up of copper pipes and suitably-shaped alumini-
um fins, joined to the pipes by mechanical flaring.
The heat exchanger is not suitable for use in corrosive
atmospheres or in environments where aluminium
may be subject to corrosion.
HEAT EXCHANGER COIL (i-CXW models)
Made up of copper pipes and suitably-shaped alu-
minium fins, joined to the pipes by mechanical flaring.
Available with 2 or 3 rows in the version for two-pipe
systems, and 2+1 rows for four-pipe systems (the hot
row is the one on the inside).
For 4-pipe systems, two different series are availa-
ble: the i-CXW 0504 and 0804 series, with priority to
heating, and the i-CXW 0604, 0704, 1104 series, with
priority to cooling.
The heat exchanger is not suitable for use in corrosive
atmospheres or in environments where aluminium
may be subject to corrosion.
CONDENSATE COLLECTION PAN
Made from ABS welded to high density polystyrene
foam, with specially-shaped preformed openings to
optimise air flow. DIN 4102 flammability class B1.
Additional drain pan supplied standard with the units.
CONDENSATE DRAIN PUMP
Centrifugal pump with 650 mm available pressure
head, controlled directly by the electronic board and
combined with a float system to control condensate
level and activate alarms.
FILTER
Regenerable, washable synthetic filter with easy
access.
VALVE ASSEMBLY
Two or three-way ON-OFF 230 V valves, complete
with fittings, pre-installed.
CONSTRUCTIONAL CHARACTERISTICS

6EN
METAL INTAKE GRILL
RAL 9003 metal intake grill, Coanda effect in cooling
mode, adaptable to standard false ceilings (in the
600x600 mm version) and without overlapping parts.
ACCESSORIES
Metal grill
(dimensions)
A
(mm)
B
(mm)
C
(mm)
600x600 574 599 34.5
800x800 845 880 45.5
VALVE ASSEMBLY
Two or three-way ON-OFF 230 V valves, complete
with fittings, supplied separately.
BUILT-IN ELECTRIC HEATER
The units in the 2-pipe configuration can be fitted as
standard with a built-in electric heater. The heater is
managed as an alternative to the hot water coil valve.
The heaters are immersion heaters installed inside the
coil. The electric heaters fitted on the appliances are
230 Volt, single-phase (separate power supply).
Note: performance in cooling mode of units with elec-
tric heaters is 95% of the values shown.
BUILT-IN POWER BOARD (HB/i-HB)
All units can be fitted as standard with HB (a-CXW)
and iHB (i-CXW) power boards. The HB/i-HB power
board manages the fan speed and operation of the
on-off valves; communication between the user inter-
face (EKW and iKW controllers). For units equipped
with the HB/i-HB board, local Master-Slave network
installations are possible, with a two-wire connection
(the board comes with dipswitches for setting the
address in multiple installations and for system config-
uration), as well as installation in centralised hydronic
management systems compatible with the Modbus
protocol (in combination with the RS485 expansion
card accessory).
RS485 EXPANSION CARD FOR HB/iHB
The HB/i-HB power board can be fitted with a specific
RS485 expansion card for integrating the unit into
BMS supervisor systems using the MODBUS RTU
Master protocol. The control unit is not required for
management in centralised systems.
SPEED SELECTOR KIT FOR a-CXW
(without HB / i-HB card)
Receiving speed selector: allows the connection in
parallel of several units to a single thermostat (MTW
or ATW type). Each unit must be equipped with 1
selector.

7
EN
ACCESSORIES
PRIMARY AIR CONNECTION
The a-CXW and i-CXW cassette fan coils can mix primary air (coming from an air handling system) with recirculat-
ed air. The maximum amount of air is equal to 20% of fan coil flow-rate at medium speed.
AIR DISTRIBUTION FLANGE
Two air supply outlets are provided on the side for additional air distribution over a larger distance and in adjacent
rooms, using the special fitting accessory. Total air flow-rate does not change.
NOTE: the primary air must be suitably filtered.
AIR
DISTRIBUTION
PRIMARY AIR INTAKE
RECIRCULATED
AIR
RECIRCULATED
AIR
Primary air
duct connection
Air distribution
flange
AIR
DISTRIBUTION
PRIMARY AIR INTAKE
RECIRCULATED
AIR
RECIRCULATED
AIR
Primary air
duct connection
Air distribution
flange

8EN
MTW wall mounted thermostat
• 3 Fan speed selector, 3 mode selector (OFF/COOL-
ING/HEATING). Thermostat with set point regulation
(temperature indication for MTW only).
• ON/OFF valve unit control in cooling/heating opera-
tion (for 2 pipes installation), ON/OFF second valve
unit control (heating operation for 4 pipes installa-
tion).
• Remote room air temperature probe in MT (on-board
sensor in MTW). Remote water temperature probe.
• HOT START function (heating mode only). Periodic
ventilation (MT only - always active). Blue LED indi-
cates system’s turning-on.
ATW wall mounted thermostat
• Mode button (OFF/COOLING/HEATING/AUTO) and
fan speed button (Max/Med/Min/AUTO).
• Thermostat with set point regulation (temperature
indication for ATW only).
• Main and additional coil valves ON/OFF control in
cooling/heating operation (for 2 or 4 pipes installa-
tion).
• Electric heater control in 2 pipes systems (ATW only).
Control of traditional or PWM modulating valve units.
• Remote room air temperature probe in AT (on-board
sensor in ATW) and remote water temperature probe.
• Digital input configurable as: window contact, econo-
my, heating or cooling remote changeover.
• Periodic ventilation set (AT only).
• Configuration dip switch. TTL serial port with Modbus
RTU protocol for installation in BMS systems (Bus-
Adapter required).
• HOT START function (heating mode only). TOO
COOL function (cooling mode only).
• Blue LEDs indicates system’s turning-on, mode and
fan speed.
CONTROLS
MODELS a-CXW i-CXW
MT/MTW ✔
AT/ATW ✔
AT-EC/ATW-EC ✔
EK/EKW ✔ *✔ *
iK/iKW ✔ *✔ *
IR REMOTE CONTROL ✔ *✔ *
* with HB/iHB power board
ATW-EC wall mounted thermostat
• Mode button (OFF/COOLING/HEATING/AUTO) and
fan speed button (Max/Med/Min/AUTO).
• Thermostat with set point regulation (temperature
indication for ATW only).
• Main and additional coil valves ON/OFF control in
cooling/heating operation (for 2 or 4 pipes installa-
tion). Electric heater control in 2 pipes systems (ATW
only).
• Remote room air temperature probe in AT-EC
(on-board sensor in ATW-EC) and remote water tem-
perature probe.
• Proportional control 0-10Vdc of the fan speed.
• Digital input configurable as: window contact, econo-
my, heating or cooling remote changeover.
• Periodic ventilation set. HOT START function (heat-
ing mode only). TOO COOL function (cooling mode
only).
• Blue LEDs indicates system’s turning-on, mode and
fan speed.
• 230V~ or 24V~ 50-60Hz power supply.
The ATW-EC thermostat cannot be connected in BMS
centralized management system

9
EN
EKW wall mounted thermostat
(available in coupling with HB or i-HB power board)
• Mode button (OFF/COOLING/HEATING/AUTO) and
fan speed button (Max/Med/Min/AUTO).
• Thermostat with set point regulation (temperature
indication for EKW only).
• Main and additional coil valves control in cooling/
heating operation (for 2 or 4 pipes installation). Man-
agement of traditional ON/OFF valve unit or mod-
ulating valve unit 0-10V or 3 points. Electric heater
control in 2 pipes systems.
• Remote room air temperature probe in EK (on-board
sensor in EKW).
• Periodic ventilation set. HOT START function (heat-
ing mode only). TOO COOL function (cooling mode
only).
• Blue LEDs indicates system’s turning-on, mode and
fan speed.
• Modbus protocol for installation in BMS (e.g. Idrore-
lax) in coupling with Modbus RTU option.
iKW wall mounted programmable thermostat with
LCD screen
(available in coupling with HB o i-HB power board)
• Interface with LCD screen.
• Mode button (OFF/COOLING/HEATING/AUTO/
MANUAL/VENTILATION) and fan speed button
(AUTO or 6 step).
• Set-point management button.
• Manual operation or with weekly programming (up
to 4 time-schedules) configurable by the user.
• Main and additional coil valves control in cooling/
heating operation (for 2 or 4 pipes installation). Man-
agement of traditional ON/OFF valve unit or mod-
ulating valve unit 0-10V or 3 points. Electric heater
control in 2 pipes systems.
• Parameters configurable directly by user.
• Modbus protocol for installation in BMS (e.g. Idrore-
lax) in coupling with Modbus RTU option.
• Installation and management of Master-Slave sys-
tem up to 8 fan-coil units.Easy installation thanks to
2 wires connection with (i)HB power board.
IR Remote control
(available in coupling with HB or i-HB power board)
• Set-point regulation, operating mode (OFF/COOL-
ING/HEATING/AUTO /VENTILATION) and fan
speed control (Max, Med, Min, AUTO).
• Installation and management of Master-Slave sys-
tem up to 8 fan-coil units. Easy installation thanks to
2 wires connection with (i)HB power board.
• Periodic ventilation set. HOT START function (heat-
ing mode only). TOO COOL function (cooling mode
only).
• Digital input configurable as: economy contact, heat-
ing or cooling remote changeover, ON/OFF.
CONTROLS

10 EN
AIR FLOW-RATE MANAGEMENT
The air throw specified in the tables must be considered a maximum value only, as it may vary significantly depend-
ing on the size of the room where the appliance is installed, and the arrangement of the furniture in the room. Use-
ful air throw L refers to the distance between the appliance and the point where the air speed is 0.2 m/sec; if the
louvre is at a 30° angle (recommended in cooling mode), the so-called “Coanda” effect occurs, as illustrated in the
first diagram, while at a 45° angle (recommended in heating mode), air flow is downwards, as illustrated in the sec-
ond diagram.
NOTE: For sizing in heating mode, pay special attention to buildings where the floor temperature is very low (for
example, below 5°C); in these situations, the floor may cool the air above it down to low temperatures that counter-
act the uniform distribution of warm air leaving the appliance, thus reducing the delivery value shown in the table.
Size 402/4-502/4 602/4 702/4 802/4 1102/4 1202/4
Speed 123123123123123123
L (m) 3.0 3.5 3.8 3.0 3.8 4.5 3.5 4.2 5.0 3.2 3.7 4.3 3.4 4.0 5.0 3.4 4.6 5.5
Size 402/4-502/4 602/4 702/4 802/4 1102/4 1202/4
Speed 123123123123123123
L (m) 3.3 3.9 3.8 3.3 4.2 4.8 3.9 4.5 5.2 3.5 4.1 4.8 3.8 4.6 5.4 3.8 5.1 5.8
H (m) 2.2 2.6 2.8 2.2 2.8 3.2 2.6 3.0 3.4 2.2 2.6 3.0 2.4 2.8 3.4 2.4 3.1 3.6
B (m) 2.5 2.9 3.1 2.5 3.1 3.6 2.9 3.4 3.9 2.7 3.2 3.8 3.0 3.6 4.2 3.0 4.0 4.6

11
EN
TECHNICAL SPECIFICATIONS
a-CXW 2-pipe system
1 Room temperature 27°C d.b. / 18.9°C w.b.; Chilled water (in/out) 7°C/12°C.
2 Room temperature 20°C d.b.; Hot water (in/out) 45°C/40°C.
3 Sound pressure level in an essentially free field on a reflecting floor, 1 m in front of the fans and 1 m above the floor.
Non-binding value obtained from the sound power level.
4 Sound power based on measurements performed in accordance with ISO 3741 and Eurovent 8/2.
5 Unit in standard configuration and construction, without optional accessories.
6 Values refer to EN 14511
7 Values refer to [REGULATION (EU) No. 2016/2281]
Certified data in EUROVENT
a-CXW 402 502 602 702 802 1102 1202
ELECTRICAL DATA
Power supply V/ph/Hz 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50
2 PIPES SYSTEM CONFIGURATION
ENERGY EFFICIENCY
COOLING (EN14511 VALUE)
FCEER (1)(6) kW/kW 48 72 81 77 113 113 101
FCEER Class E D C D C C C
HEATING ONLY (EN14511 VALUE)
FCCOP (2)(6) kW/kW 54 74 79 78 117 108 102
FCCOP Class E D D D C C C
PERFORMANCE
MIN SPEED
Fan Power Input -1 W 25 25 25 32 33 42 42
Air flow rate -1 m³/h 310 310 320 430 630 710 710
Total capacity in cooling mode -1 kW 1,51 1,85 1,85 2,36 4,14 4,52 4,52
Total Net Cooling Capacity (1)(6)(7) kW 1,25 1,82 2,23 2,91 4,18 5,27 5,27
Sensible capacity in cooling mode -1 kW 1,01 1,35 1,58 2,08 3,03 3,46 3,71
Net sensible cooling capacity (1)(6)(7) kW 0,99 1,33 1,56 2,05 3 3,42 3,67
Net latent power in cooling (1)(6)(7) kW 0,26 0,49 0,67 0,86 1,18 1,86 1,6
Max water flow -1 m³/h 0,06 0,09 0,11 0,14 0,2 0,25 0,25
Pressure Drop in cooling mode -1 kPa 4,3 4,8 4,5 7,3 10,5 9,1 11,1
Total capacity (heating mode) -2 kW 1,35 1,82 2,1 2,82 4,24 4,88 5,08
Total Net Heating Capacity (2)(6) kW 1,37 1,85 2,12 2,85 4,27 4,92 5,12
Water flow in heating mode -2 m³/h 0,07 0,09 0,1 0,14 0,2 0,24 0,25
Pressure drop in heating mode -2 kPa 4,9 4,2 3,6 6,1 9,7 7,1 7,6
Sound Pressure -3 dB(A) 24 24 24 32 24 25 25
Sound Power (4)(7) dB(A) 33 33 33 41 33 34 34
MED SPEED
Fan Power Input -1 W 32 32 44 57 48 63 95
Air flow rate -1 m³/h 420 420 500 610 820 970 1280
Total capacity in cooling mode -1 kW 1,63 2,34 3,34 3,87 4,91 6,78 8,45
Total Net Cooling Capacity (1)(6)(7) kW 1,6 2,31 3,3 3,82 4,87 6,72 8,36
Sensible capacity in cooling mode -1 kW 1,32 1,75 2,39 2,81 3,58 4,48 6,1
Net sensible cooling capacity (1)(6)(7) kW 1,29 1,72 2,35 2,75 3,53 4,41 6,01
Net latent power in cooling (1)(6)(7) kW 0,31 0,59 0,95 1,06 1,33 2,31 2,35
Max water flow -1 m³/h 0,08 0,11 0,16 0,19 0,23 0,32 0,4
Pressure Drop in cooling mode -1 kPa 6,9 7,4 9,3 12,1 14 14,2 25,7
Total capacity (heating mode) -2 kW 1,77 2,39 3,24 3,79 4,98 6,34 8,45
Total Net Heating Capacity (2)(6) kW 1,8 2,42 3,28 3,85 5,03 6,41 8,55
Water flow in heating mode -2 m³/h 0,09 0,12 0,16 0,18 0,24 0,31 0,41
Pressure drop in heating mode -2 kPa 8,1 6,8 7,8 10,3 12,8 11,2 19,3
Sound Pressure -3 dB(A) 31 31 36 40 31 31 39
Sound Power (4)(7) dB(A) 40 40 45 49 40 40 48
MAX SPEED
Fan Power Input -1 W 57 44 68 90 77 120 170
Air flow rate -1 m³/h 610 520 710 880 1140 1500 1820
Total capacity in cooling mode -1 kW 1,98 2,68 4,33 5,02 6,15 9,5 11,1
Total Net Cooling Capacity (1)(6)(7) kW 1,92 2,64 4,27 4,93 6,08 9,39 10,9
Sensible capacity in cooling mode -1 kW 1,64 2,04 3,18 3,74 4,59 6,47 8,25
Net sensible cooling capacity (1)(6)(7) kW 1,58 2 3,11 3,65 4,52 6,35 8,08
Net latent power in cooling (1)(6)(7) kW 0,34 0,64 1,15 1,28 1,56 3,03 2,83
Max water flow -1 m³/h 0,09 0,13 0,21 0,24 0,29 0,45 0,53
Pressure Drop in cooling mode -1 kPa 9,8 9,5 14,9 19,4 21 26,2 41,9
Total capacity (heating mode) -2 kW 2,18 2,76 4,3 5,06 6,42 9,12 11,5
Total Net Heating Capacity (2)(6) kW 2,24 2,8 4,37 5,15 6,5 9,24 11,7
Water flow in heating mode -2 m³/h 0,11 0,13 0,21 0,24 0,31 0,44 0,56
Pressure drop in heating mode -2 kPa 11,9 8,7 12,7 17,1 19,9 21,3 33,8
Sound Pressure -3 dB(A) 40 36 44 50 39 44 49
Sound Power (4)(7) dB(A) 49 45 53 59 48 53 58
SIZE AND WEIGHT
A -5 mm 575 575 575 575 820 820 820
B -5 mm 575 575 575 575 820 820 820
H -5 mm 275 275 275 275 303 303 303
Operating weight -5 kg 22 22 24 24 36 39 39

12 EN
TECHNICAL SPECIFICATIONS
a-CXW 4-pipe system
1 Room temperature 27°C d.b. / 18.9°C w.b.; Chilled water (in/out) 7°C/12°C.
2 Room temperature 20°C d.b.; Hot water (in/out) 45°C/40°C.
3 Sound pressure level in an essentially free field on a reflecting floor, 1 m in front of the fans and 1 m above the floor.
Non-binding value obtained from the sound power level.
4 Sound power based on measurements performed in accordance with ISO 3741 and Eurovent 8/2.
5 Unit in standard configuration and construction, without optional accessories.
6 Values refer to EN 14511
7 Values refer to [REGULATION (EU) No. 2016/2281]
Certified data in EUROVENT
a-CXW 404 504 604 704 804 1104 1204
ELECTRICAL DATA
Power supply V/ph/Hz 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50
2 PIPES SYSTEM CONFIGURATION
ENERGY EFFICIENCY
COOLING (EN14511 VALUE)
FCEER (1)(6) kW/kW 58 72 65 61 113 95 84
FCEER Class D D D D C C C
HEATING ONLY (EN14511 VALUE)
FCCOP (2)(6) kW/kW 67 83 77 70 145 122 109
FCCOP Class E D D D C C C
PERFORMANCE
MIN SPEED
Fan Power Input -1 W 25 25 25 32 33 42 42
Air flow rate -1 m³/h 310 310 320 430 630 710 710
Total capacity in cooling mode -1 kW 1,51 1,85 1,85 2,36 4,14 4,52 4,52
Total Net Cooling Capacity (1)(6)(7) kW 1,49 1,83 1,83 2,33 4,11 4,48 4,48
Sensible capacity in cooling mode -1 kW 1,16 1,35 1,34 1,75 2,96 3,25 3,25
Net sensible cooling capacity (1)(6)(7) kW 1,14 1,33 1,32 1,72 2,93 3,21 3,21
Net latent power in cooling (1)(6)(7) kW 0,35 0,5 0,51 0,61 1,18 1,27 1,27
Max water flow -1 m³/h 0,07 0,09 0,09 0,11 0,2 0,22 0,22
Pressure Drop in cooling mode -1 kPa 6 4,8 3,2 4,9 10,2 6,8 8,3
Total capacity (heating mode) -2 kW 1,69 2,11 2,11 2,58 5,18 5,65 5,65
Total Net Heating Capacity (2)(6) kW 1,72 2,13 2,13 2,61 5,21 5,69 5,69
Water flow in heating mode -2 m³/h 0,04 0,05 0,05 0,06 0,13 0,14 0,14
Pressure drop in heating mode -2 kPa 5,2 4,8 4 5,7 8,6 7,7 9,7
Sound Pressure -3 dB(A) 24 24 24 32 24 25 25
Sound Power (4)(7) dB(A) 33 33 33 41 33 34 34
MED SPEED
Fan Power Input -1 W 32 32 44 57 48 63 95
Air flow rate -1 m³/h 420 420 500 610 820 970 1280
Total capacity in cooling mode -1 kW 1,96 2,36 2,65 3,02 5,03 5,66 6,93
Total Net Cooling Capacity (1)(6)(7) kW 1,93 2,33 2,61 2,97 4,99 5,6 6,84
Sensible capacity in cooling mode -1 kW 1,55 1,71 1,98 2,29 3,65 4,15 5,19
Net sensible cooling capacity (1)(6)(7) kW 1,52 1,68 1,94 2,23 3,6 4,09 5,1
Net latent power in cooling (1)(6)(7) kW 0,41 0,65 0,67 0,73 1,38 1,51 1,74
Max water flow -1 m³/h 0,09 0,11 0,13 0,14 0,24 0,27 0,33
Pressure Drop in cooling mode -1 kPa 9,6 7,5 6,1 7,7 14,6 10,2 17,9
Total capacity (heating mode) -2 kW 2,2 2,63 3 3,27 6,28 7,09 8,7
Total Net Heating Capacity (2)(6) kW 2,23 2,66 3,04 3,33 6,33 7,15 8,8
Water flow in heating mode -2 m³/h 0,05 0,06 0,07 0,08 0,15 0,17 0,21
Pressure drop in heating mode -2 kPa 8,3 7,1 7,4 8,7 12 11,4 20,8
Sound Pressure -3 dB(A) 31 31 36 40 31 31 39
Sound Power (4)(7) dB(A) 40 40 45 49 40 40 48
MAX SPEED
Fan Power Input -1 W 57 44 68 90 77 120 170
Air flow rate -1 m³/h 610 520 710 880 1140 1500 1820
Total capacity in cooling mode -1 kW 2,33 2,7 3,34 3,81 6,33 7,71 8,9
Total Net Cooling Capacity (1)(6)(7) kW 2,27 2,66 3,28 3,73 6,26 7,6 8,73
Sensible capacity in cooling mode -1 kW 1,9 1,98 2,56 2,97 4,69 5,83 6,85
Net sensible cooling capacity (1)(6)(7) kW 1,84 1,94 2,49 2,88 4,61 5,71 6,68
Net latent power in cooling (1)(6)(7) kW 0,43 0,72 0,78 0,84 1,64 1,88 2,05
Max water flow -1 m³/h 0,11 0,13 0,16 0,18 0,3 0,37 0,43
Pressure Drop in cooling mode -1 kPa 13,2 9,6 9,3 11,7 22,2 17,9 28,2
Total capacity (heating mode) -2 kW 2,6 3 3,79 4,1 7,94 9,54 10,9
Total Net Heating Capacity (2)(6) kW 2,66 3,04 3,85 4,19 8,02 9,66 11,1
Water flow in heating mode -2 m³/h 0,06 0,07 0,09 0,1 0,19 0,23 0,27
Pressure drop in heating mode -2 kPa 11,1 8,9 11,2 12,9 18 19,2 31,2
Sound Pressure -3 dB(A) 40 36 44 50 39 44 49
Sound Power (4)(7) dB(A) 49 45 53 59 48 53 58
SIZE AND WEIGHT
A -5 mm 575 575 575 575 820 820 820
B -5 mm 575 575 575 575 820 820 820
H -5 mm 275 275 275 275 303 303 303
Operating weight -5 kg 22 22 24 24 36 39 39

13
EN
TECHNICAL SPECIFICATIONS
i-CXW 2-pipe system
1 Room temperature 27°C d.b. / 18.9°C w.b.; Chilled water (in/out) 7°C/12°C.
2 Room temperature 20°C d.b.; Hot water (in/out) 45°C/40°C.
3 Sound pressure level in an essentially free field on a reflecting floor, 1 m in front of the fans and 1 m above the floor.
Non-binding value obtained from the sound power level.
4 Sound power based on measurements performed in accordance with ISO 3741 and Eurovent 8/2.
5 Unit in standard configuration and construction, without optional accessories.
6 Values refer to EN 14511
7 Values refer to [REGULATION (EU) No. 2016/2281]
Certified data in EUROVENT
i-CXW 502 602 702 802 1102
ELECTRICAL DATA
Power supply V/ph/Hz 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50
2 PIPES SYSTEM CONFIGURATION
ENERGY EFFICIENCY
COOLING (EN14511 VALUE)
FCEER (1)(6) kW/kW 307 319 219 346 292
FCEER Class A A A A A
HEATING ONLY (EN14511 VALUE)
FCCOP (2)(6) kW/kW 316 314 222 360 284
FCCOP Class A A B A A
PERFORMANCE
MIN SPEED
Fan Power Input -1 W 5,37 5,72 6,57 9,96 10,7
Air flow rate -1 m³/h 310 310 360 630 710
Total capacity in cooling mode -1 kW 1,84 2,24 2,55 4,2 5,28
Total Net Cooling Capacity (1)(6)(7) kW 1,84 2,24 2,54 4,19 5,27
Sensible capacity in cooling mode -1 kW 1,35 1,57 1,8 3,03 3,69
Net sensible cooling capacity (1)(6)(7) kW 1,34 1,56 1,79 3,02 3,68
Net latent power in cooling (1)(6)(7) kW 0,49 0,67 0,75 1,17 1,59
Max water flow -1 m³/h 0,09 0,11 0,12 0,2 0,25
Pressure Drop in cooling mode -1 kPa 4,8 4,5 5,7 10,5 9
Total capacity (heating mode) -2 kW 1,85 2,12 2,46 4,26 4,89
Total Net Heating Capacity (2)(6) kW 1,86 2,13 2,47 4,27 4,9
Water flow in heating mode -2 m³/h 0,09 0,1 0,12 0,21 0,24
Pressure drop in heating mode -2 kPa 4,4 3,7 4,8 9,8 7,1
Sound Pressure -3 dB(A) 24 24 28 24 25
Sound Power (4)(7) dB(A) 33 33 37 33 34
MED SPEED
Fan Power Input -1 W 7,54 10,3 21,9 17,2 31,3
Air flow rate -1 m³/h 380 445 610 870 1130
Total capacity in cooling mode -1 kW 2,16 3,05 3,87 5,14 7,71
Total Net Cooling Capacity (1)(6)(7) kW 2,15 3,04 3,85 5,13 7,68
Sensible capacity in cooling mode -1 kW 1,61 2,17 2,81 3,76 5,53
Net sensible cooling capacity (1)(6)(7) kW 1,6 2,16 2,79 3,74 5,5
Net latent power in cooling (1)(6)(7) kW 0,55 0,88 1,06 1,38 2,18
Max water flow -1 m³/h 0,1 0,15 0,19 0,25 0,37
Pressure Drop in cooling mode -1 kPa 6,4 7,9 12,1 15,2 17,9
Total capacity (heating mode) -2 kW 2,21 2,97 3,83 5,29 7,31
Total Net Heating Capacity (2)(6) kW 2,22 2,98 3,85 5,31 7,34
Water flow in heating mode -2 m³/h 0,11 0,14 0,18 0,26 0,35
Pressure drop in heating mode -2 kPa 5,9 6,7 10,5 14,2 14,4
Sound Pressure -3 dB(A) 30 34 41 30 38
Sound Power (4)(7) dB(A) 39 43 50 39 47
MAX SPEED
Fan Power Input -1 W 16,1 31,1 61,7 33 108
Air flow rate -1 m³/h 535 710 880 1165 1770
Total capacity in cooling mode -1 kW 2,74 4,33 5,02 6,33 10,8
Total Net Cooling Capacity (1)(6)(7) kW 2,73 4,3 4,96 6,3 10,7
Sensible capacity in cooling mode -1 kW 2,09 3,18 3,74 4,72 7,94
Net sensible cooling capacity (1)(6)(7) kW 2,07 3,15 3,68 4,69 7,83
Net latent power in cooling (1)(6)(7) kW 0,65 1,15 1,28 1,61 2,87
Max water flow -1 m³/h 0,13 0,21 0,24 0,3 0,52
Pressure Drop in cooling mode -1 kPa 9,9 14,9 19,4 22,2 33
Total capacity (heating mode) -2 kW 2,85 4,33 5,09 6,67 10,5
Total Net Heating Capacity (2)(6) kW 2,87 4,36 5,15 6,7 10,6
Water flow in heating mode -2 m³/h 0,14 0,21 0,25 0,32 0,51
Pressure drop in heating mode -2 kPa 9,2 12,9 17,3 21,3 27,2
Sound Pressure -3 dB(A) 38 45 51 39 48
Sound Power (4)(7) dB(A) 47 54 60 48 57
SIZE AND WEIGHT
A -5 mm 575 575 575 820 820
B -5 mm 575 575 575 820 820
H -5 mm 275 275 275 303 303
Operating weight -5 kg 22 24 24 36 39

14 EN
TECHNICAL SPECIFICATIONS
i-CXW 4-pipe system
1 Room temperature 27°C d.b. / 18.9°C w.b.; Chilled water (in/out) 7°C/12°C.
2 Room temperature 20°C d.b.; Hot water (in/out) 45°C/40°C.
3 Sound pressure level in an essentially free field on a reflecting floor, 1 m in front of the fans and 1 m above the floor.
Non-binding value obtained from the sound power level.
4 Sound power based on measurements performed in accordance with ISO 3741 and Eurovent 8/2.
5 Unit in standard configuration and construction, without optional accessories.
6 Values refer to EN 14511
7 Values refer to [REGULATION (EU) No. 2016/2281]
Certified data in EUROVENT
i-CXW 504 604 704 804 1104
ELECTRICAL DATA
Power supply V/ph/Hz 230/1/50 230/1/50 230/1/50 230/1/50 230/1/50
2 PIPES SYSTEM CONFIGURATION
ENERGY EFFICIENCY
COOLING (EN14511 VALUE)
FCEER (1)(6) kW/kW 309 295 202 354 273
FCEER Class A A A A A
HEATING ONLY (EN14511 VALUE)
FCCOP (2)(6) kW/kW 362 244 164 454 254
FCCOP Class A B B A B
PERFORMANCE
MIN SPEED
Fan Power Input -1 W 5,37 5,72 6,57 9,96 10,7
Air flow rate -1 m³/h 310 310 360 630 710
Total capacity in cooling mode -1 kW 1,85 2,09 2,37 4,29 4,97
Total Net Cooling Capacity (1)(6)(7) kW 1,85 2,09 2,36 4,28 4,96
Sensible capacity in cooling mode -1 kW 1,34 1,49 1,7 3,08 3,51
Net sensible cooling capacity (1)(6)(7) kW 1,33 1,48 1,69 3,07 3,5
Net latent power in cooling (1)(6)(7) kW 0,51 0,6 0,67 1,21 1,46
Max water flow -1 m³/h 0,09 0,1 0,11 0,21 0,24
Pressure Drop in cooling mode -1 kPa 4,8 3,9 5 10,9 8,1
Total capacity (heating mode) -2 kW 2,13 1,73 1,92 5,4 4,57
Total Net Heating Capacity (2)(6) kW 2,14 1,74 1,92 5,41 4,58
Water flow in heating mode -2 m³/h 0,05 0,04 0,05 0,13 0,11
Pressure drop in heating mode -2 kPa 4,9 2,8 3,4 9,2 5,3
Sound Pressure -3 dB(A) 24 24 28 24 25
Sound Power (4)(7) dB(A) 33 33 37 33 34
MED SPEED
Fan Power Input -1 W 7,54 10,3 21,9 17,2 31,3
Air flow rate -1 m³/h 380 445 610 870 1130
Total capacity in cooling mode -1 kW 2,17 2,82 3,53 5,27 7,16
Total Net Cooling Capacity (1)(6)(7) kW 2,16 2,81 3,51 5,26 7,13
Sensible capacity in cooling mode -1 kW 1,6 2,04 2,62 3,83 5,2
Net sensible cooling capacity (1)(6)(7) kW 1,59 2,03 2,6 3,81 5,17
Net latent power in cooling (1)(6)(7) kW 0,57 0,78 0,91 1,44 1,96
Max water flow -1 m³/h 0,1 0,13 0,17 0,25 0,34
Pressure Drop in cooling mode -1 kPa 6,4 6,8 10,2 15,9 15,6
Total capacity (heating mode) -2 kW 2,5 2,19 2,64 6,64 6,24
Total Net Heating Capacity (2)(6) kW 2,51 2,2 2,66 6,66 6,27
Water flow in heating mode -2 m³/h 0,06 0,05 0,06 0,16 0,15
Pressure drop in heating mode -2 kPa 6,5 4,3 6 13,2 9,1
Sound Pressure -3 dB(A) 30 34 41 30 38
Sound Power (4)(7) dB(A) 39 43 50 39 47
MAX SPEED
Fan Power Input -1 W 16,1 31,1 61,7 33 108
Air flow rate -1 m³/h 535 710 880 1165 1770
Total capacity in cooling mode -1 kW 2,76 3,93 4,53 6,51 9,86
Total Net Cooling Capacity (1)(6)(7) kW 2,75 3,9 4,47 6,48 9,76
Sensible capacity in cooling mode -1 kW 2,08 2,95 3,46 4,83 7,4
Net sensible cooling capacity (1)(6)(7) kW 2,06 2,92 3,4 4,8 7,29
Net latent power in cooling (1)(6)(7) kW 0,68 0,98 1,07 1,68 2,46
Max water flow -1 m³/h 0,13 0,19 0,22 0,31 0,47
Pressure Drop in cooling mode -1 kPa 10 12,5 16,1 23,3 28
Total capacity (heating mode) -2 kW 3,16 2,88 3,23 8,21 8,22
Total Net Heating Capacity (2)(6) kW 3,18 2,91 3,29 8,24 8,33
Water flow in heating mode -2 m³/h 0,08 0,07 0,08 0,2 0,2
Pressure drop in heating mode -2 kPa 9,8 6,9 8,5 19 14,8
Sound Pressure -3 dB(A) 38 45 51 39 48
Sound Power (4)(7) dB(A) 47 54 60 48 57
SIZE AND WEIGHT
A -5 mm 575 575 575 820 820
B -5 mm 575 575 575 820 820
H -5 mm 275 275 275 303 303
Operating weight -5 kg 22 24 24 36 39

15
EN
WEIGHTS AND DIMENSIONS
Model
a-CXW Model i-CXW Weight of packaged unit kg Weight of unpackaged unit kg A mm B mm C mm
0402 28 22
790 350 790
0502 0502
0404
30 24
0504 0504
0602 / 0604 0602 / 0604
0702 / 0704 0702 / 0704
0802 0802 44 36
1050 400 1050
0804 0804
47 391102 / 1104 1102 / 1104
1202 / 1204
Units with mounted valves 950 x 800 x 400mm (402/704); 1200 x 1000 x 400 (802/1204)
Model
a-CXW Model i-CXW Weight of packaged unit kg Weight of unpackaged unit kg A mm B mm
0402
6 3 750 150
0502 0502
0404
0504 0504
0602 / 0604 0602 / 0604
0702 / 0704 0702 / 0704
0802 0802
10 6 1000 200
0804 0804
1102 / 1104 1102 / 1104
1202 / 1204
APPLIANCE
CEILING BOX
The cassette fan coil comprises the following parts:
• Appliance
• Condensate drain pan, including assembly acces-
sories
• Ceiling mounting box + 4 x M5x50mm screws + 4
washers
• Mounting brackets + 16 x 3.9x9.5mm screws
• Valves and pipes (optional)
• Control switches and thermostats, as specified
(optional)
• Instruction and maintenance booklet
GENERAL INFORMATION ON RECEIVING THE UNIT

16 EN
THIS USER MANUAL SHOULD BE READ CARE-
FULLY, TO ENSURE YOUR SAFETY AND TO
AVOID DAMAGE TO THE CASSETTE FAN COIL.
A-weighted sound pressure level < 70 dB(A)
The following is extremely important with regards to
the operations involving:
Handling, storage, installation, maintenance, oper-
ation, work on the electrical system, work on the
refrigeration system
• All personnel must be properly trained or instructed.
• Responsibilities of all personnel must be clearly
defined.
• All work on the electrical system must be performed
by or under the supervision of qualified electricians.
• All work on the water circuit must be carried out by
qualified installers or by trained personnel.
Assembly, disassembly, installation, work on the elec-
trical system, commissioning and maintenance of the
cassette fan coil for false ceiling installation must be
performed in compliance with the health and safety
laws, rules, regulations, codes and standards in force,
and with the latest technology.
These may include regulations, rules, codes and
standards on refrigeration systems, pressure vessels,
electrical systems and lifting equipment.
The wiring diagrams included in this manual do not
take into account earthing or other types of electrical
protection required by local laws, regulations, codes
and standards or by the local electricity supplier.
Scope and qualifications
This manual covers:
• Transport, handling and storage
• Installation
• Work on the electrical system
• Commissioning and maintenance
• Disposal
Any repairs or maintenance on the appliance must be
carried out by specialised and qualified personnel.
The manufacturer is not liable for damage due to
modifications or tampering with the appliance.
Any modifications or additions to the fan coil that may
compromise its safety, including the addition and
adjustment of safety devices and valves, requires the
manufacturer’s approval.
Installation work on the electrical systems and repairs
must be carried out by qualified and experienced per-
sonnel, who are aware of:
• health and safety rules and regulations;
• accident-prevention rules and regulations;
• relevant codes and standards.
Such skilled workers must fully understand their work
and be able to identify and avoid potential risks.
Transport, handling, commissioning and maintenance
must be performed by specialist personnel or persons
who have received the necessary training and instruc-
tions regarding the type of work and the risks deriving
from failure to comply with safety regulations.
GENERAL WARNINGS

17
EN
For installation:
WARNING
Remove the fan block before installation (600x600
sizes only)
• Near the appliance or appliances, in an easily
accessible position, install a safety switch that dis-
connects power to the unit.
• Be sure to connect the earth.
• Do not install in an explosive or corrosive atmos-
phere, in damp places, outdoors or in very dusty
environments.
• The space above the false ceiling must be dry and
adequately protected against the ingress of mois-
ture.
• In the event of installation with an outside air intake
damper, be aware of winter frost that can may break
the coil tubes.
During installation, for safety reasons, always observe
the following requirements:
• The unit must always be handled by two people.
• Handle the fan coils by holding them only at the
appropriate points.
• Hoists and lifting equipment must have a sufficient
capacity.
• Do not use faulty hoists and lifting equipment.
• Ropes, straps and similar lifting devices must not be
knotted or come into contact with sharp edges.
• Forklifts, hoists and cranes must have a sufficient
capacity.
• No loads should be suspended above people.
The following are also recommended:
• The operating pressure and temperature should
never exceed the specified pressure and tempera-
ture (see the label).
• The air intake and supply openings should never be
obstructed or blocked!
For maintenance and repairs:
• When replacing components, always request origi-
nal spare parts.
• Always use work gloves.
• Do not carry out any work or maintenance without
having first disconnected the appliance from the
power supply.
• Do not remove any protective devices without hav-
ing first disconnected the appliance from the power
supply.
WARNING! DANGEROUS VOLTAGE.
Do not perform any kind of operation before
disconnecting the power supply.
WAIT AT LEAST 3 MINUTES to allow the
capacitor to discharge.
• Make sure the fan has stopped.
• During repairs and maintenance, close the valves
on the supply and return circuits and any other
on-off valve.
• Do not modify safety or control devices without
GENERAL WARNINGS

18 EN
The fundamental data concerning the fan coil and the
heat exchanger are as follows:
Fan coil and heat exchanger:
• Maximum heat transfer fluid temperature: max 80°C
• Minimum cooling fluid temperature: min 5°C
• Maximum operating pressure: 1000 kPa (10 bars)
• Power supply a-CXW 230V/1/50-60 Hz
• Power supply i-CXW 230V/1/50 Hz
• Power consumption: see the rating plate
The technical data for the valves with thermoelectric
actuators are as follows:
Valves with thermoelectric actuator:
• Power supply voltage: 230V~50/60Hz
• VA rating/protection: 5 VA/IP 44
• Closing time: 180 secs.
• Maximum glycol content in the water: 50%
Other technical data
All other important technical data (dimensions,
weights, connections, noise, etc.) are provided in oth-
er parts of this manual, in the separate technical docu-
mentation or in the technical leaflet.
OPERATING LIMITS
• Product disposal: comply with the environmental
regulations in force.
• Disposal of waste electrical and electronic
equipment (WEEE) pursuant to European Direc-
tive 2012/19/EU. (Applicable in countries with
separate waste collection systems)
The symbol placed on the product or in the documen-
tation states that, at the end of its working life, the
products must not be disposed as normal municipal
solid waste.
The crossed-out wheelie bin symbol is shown on all
of the products to remind users of the requirements of
separate waste disposal.
DISPOSAL
authorisation and instructions from the manufactur-
er.
• If the heat exchanger tubes are improperly handled,
the hot heat transfer fluid that may escape can
cause burns.
• All panels and covers removed for maintenance or
repairs must be replaced after the work has been
completed.
For use:
• Never place anything through the air intake or sup-
ply grills.
• In particularly cold climates, drain the water from the
system if not used for long periods.
GENERAL WARNINGS

19
EN
TECHNICAL SPECIFICATIONS
a-CXW 0402-0404-0502-0504-0602-0604-0702-0704
i-CXW 0502-0504-0602-0604-0702-0704
a-CXW 0802-0804-1102-1104-1202-1204
i-CXW 0802-0804-1102-1104
402÷704 = 270*
802÷1204 = 303*
* APPLIANCE ** CEILING BOX
26**
2-pipe system
3 - Hot/cold water inlet 1/2”
4 - Hot/cold water outlet 1/2”
4-pipe system
1 - Hot water inlet 1/2”
2 - Hot water outlet 1/2”
3 - Cold water inlet 1/2”
4 - Cold water outlet 1/2”
2-pipe system
3 - Hot/cold water inlet 3/4”
4 - Hot/cold water outlet 3/4”
4-pipe system
1 - Hot water inlet 1/2”
2 - Hot water outlet 1/2”
3 - Cold water inlet 3/4”
4 - Cold water outlet 3/4”

20 EN
TECHNICAL SPECIFICATIONS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
2-way valve
3-way valve
2-way valve
3-way valve
3/4" GAS
IN
OUT
OUT
IN
OUT
IN
OUT
IN
CW / LPHW
CW / LPHW
LPHW
CW
LPHW
CW
4 PIPES
2 PIPES
200
200200
107
228
40 58
73 34
228
258
40 58
228
107
40 58
175
258
228
3473
40 58
200
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
3/4" GAS
2-way valve
3-way valve
2-way valve
3-way valve
3/4" GAS
IN
OUT
OUT
IN
OUT
IN
OUT
IN
CW / LPHW
CW / LPHW
LPHW
CW
LPHW
CW
4 PIPES
2 PIPES
200
200200
107
228
40 58
73 34
228
258
40 58
228
107
40 58
175
258
228
3473
40 58
200
OVERALL DIMENSIONS
VALVES 0402-0502-0602-0702
OVERALL DIMENSIONS
VALVES 0404-0504-0604-0704