Ferroli HXW LT User manual

HXW LT
WATER - WATER AND BRINE - WATER
HEAT PUMPS
FOR OUTDOOR OR INDOOR INSTALLATION
INSTALLATION AND OPERATION MANUAL
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The manufacturer declines all the responsabilities regarding inaccuracies contained in this manual, if due to printing or typing mi-
stakes. The manufacturer reserves the right to apply changes and improvements to the products at any time without notice.
Dear Customer,
Thank you for having purchased a FERROLI product. It is the result of many years of experiences and of particular research studies
and has been made with top quality materials and advanced technologies. The CE mark guarantees that the products satisfy all the
applicable European Directives.
The qualitative level is kept under constant control and FERROLI products therefore offer SAFETY, QUALITY and RELIABILITY.
Due to the continuous improvements in technologies and materials, the product specication as well as performances are subject to
variations without prior notice.
Thank you once again for your preference
FERROLI S.p.A

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TABLE OF CONTENTS
GENERAL FEATURES ...................................................................................4
General instructions ...................................................................................4
Declaration of conformity ...............................................................................4
Unit dataplate ........................................................................................4
Unit description .......................................................................................5
Unit identification code .................................................................................5
Description of components ..............................................................................6
Control system .......................................................................................7
Options .............................................................................................8
Accessories .........................................................................................9
TECHNICAL DATA AND PERFORMANCES ..................................................................10
Technical data........................................................................................10
NOMINAL performances - HIGH TEMPERATURE plants ......................................................11
NOMINAL performances - STANDARD plants ...............................................................12
NOMINAL performances - RADIANT plants .................................................................13
HEATING performances ................................................................................14
COOLING performances ...............................................................................15
Plant side hydraulic performances ........................................................................16
Source side hydraulic performances ......................................................................18
Operating limits.......................................................................................19
Electrical data ........................................................................................20
Noise levels .........................................................................................20
Weights.............................................................................................21
Overall dimensions ....................................................................................22
Minimum operating area ................................................................................22
CONNECTIONS.........................................................................................23
Hydraulic connections..................................................................................23
Electrical connections ..................................................................................24
RECEIVING AND POSITIONING ...........................................................................25
Receiving ...........................................................................................25
Positioning ..........................................................................................25
START UP .............................................................................................26
Start up .............................................................................................26
CONTROL SYSTEM .....................................................................................27
Control system configuration ............................................................................27
Heating and cooling circuits .............................................................................28
Control system devices installation........................................................................29
Wireless devices connection ............................................................................31
Control system using ..................................................................................32
Control system programming ............................................................................35
Menu structure .......................................................................................35
Remote thermostat programming .........................................................................37
Remote control (wired o wireless) programming .............................................................37
Functions available for the use ...........................................................................37
Inputs and outputs ....................................................................................39
Alarms..............................................................................................40
Alarms table .........................................................................................40
Controller technical data ................................................................................43
Sensors features......................................................................................44
MAINTENANCE.........................................................................................45
Maintenance .........................................................................................45
SAFETY AND POLLUTION................................................................................46
General considerations.................................................................................46
Refrigerant safety card .................................................................................46

4
GENERAL FEATURES
General instructions
Declaration of conformity
Unit dataplate
The figure shows the fields reported on the unit dataplate :
This manual and the wiring diagram supplied with the unit must be kept in a dry place for possible future consultation.
The manual provides information on installation and correct use and maintenance of the unit. Before carrying out installation,
please carefully read all the information contained in this manual, which describes the procedures necessary for correct
installation and use of the unit.
Follow carefully the instructions contained in this manual and respect the safety regulations in force. The unit must be installed
in conformity with the laws in force in the country of use. Unauthorized tampering with the electrical and mechanical equipment
INVALIDATES THE WARRANTY.
Check the electrical specifications given on the dataplate before making the electrical connections. Read the instructions given in the
specific section on electrical connections.
Deactivate the equipment in case of fault or poor operation.
If the unit requires fixing, contact only specialized service centers recognized by the manufacturer and use original spare parts.
The unit can be installed outdoor or indoor and must be connected to a hydronic cooling and/or heating system. Any use different from
that permitted or outside the operating limits indicated in this manual is prohibited (unless previously agreed with the firm).
The manufacturer declines any responsability for damage or injury due to non-compliance with the information given in this manual.
The firm declares that the present unit complies with the requirements of the following directives :
• Machinery directive (MD) 2006/42/EC
• Pressure equipment directive (PED) 97/23/EC
• Electromagnetic compatibility directive (EMC) 2004/108/EC
• Low voltage directive (LVD) 2006/95/EC
Codice
Code B1 Rev
Ferroli Spa
Via Ritonda 78/A
(VR) Italy
A- Trademark
B- Model
B1 - Code
C- Serial number
D- Capacity in cooling at the condition W30W18
E- Capacity in heating (heat pump) at the condition W10W35
F- Power input in cooling at the condition W30W18
G- Power input in heating (heat pump) at the condition W10W35
H- Reference standard
I- Power supply
L- Maximum absorbed current
M- Refrigerant type and charge weight
N- Unit weight
O- Sound pressure level at 1 metre
P- IP protection level
Q- Maximum pressure - high pressure side
R- Maximum pressure - low pressure side
S- PED certification body

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IH 12.1 VB AB 0 M 1
GENERAL FEATURES
Unit description
This series of water-water heat pumps satises the heating,
cooling and domestic hot water production requirements of resi-
dential plants of small and medium size.
All the units are suitable for outdoor or indoor installation and
can be applied to fan coil plants, radiant oor plants and high
efciency radiators plants.
As source both water (from well, river, lake…) or brine solutions
(from geothermic probes) can be used.
The control system allows to manage not only the refrigerant
circuit but the whole plant with the possibility to choose different
solutions both for the heating and cooling plant and for the do-
mestic hot water management. The possibility of solar panels or
other heating sources integration is also available.
The heating function optimizes the ow water temperature ac-
cording both to the ambient temperature and to the outdoor tem-
perature through climatic curves adaptable to the building featu-
res. It’s possible to manage a storage tank and two independent
circuits (a direct one and a mixed one).
The domestic hot water management allows to control the th-
ree way valve, the storage tank and the anti-legionella cycles (if
necessary).
The cooling function can be realized through “passive cooling”
(free cooling), through “active cooling” (refrigerant circuit inver-
sion) or through both systems actuated in sequence. When the
unit is used in radiant oor plants, to avoid condensate genera-
tion, a room humidity sensor can be installed.
The internal programmer clock allows to dene different daily
switching programs for heating, cooling and domestic hot water
production.
The refrigerant circuit is equipped with scroll compressor
mounted on damper supports, brazed plate heat exchangers,
thermostatic expansion valve and reverse cycle valve (for re-
versible units). The circuit is protected by high and low pressure
switches and ow switches on both the exchangers.
The outdoor structure is thermally and acoustically insulated
in order to reduce sound propagation and to allow the installa-
tion in domestic places.
All the hydraulic pipes are thermally insulated to avoid conden-
sate generation.
The three phase electrical power supply heat pumps are sup-
plied with phase sequence and voltage controller integrated in-
side the unit controller.
All the units are accurately built and individually tested in the
factory. Only electric and hydraulic connections are required for
installation.
Unit identification code
The codes that identify the units and the meaning of the letters used are described below.
Unit type
IH - Units suitable for hydronic plant in-
stallation operating as heat pumps
IP - Units suitable for hydronic plant
installation operating as reversible heat
pumps
Power supply
1- 230V - 1 - 50 Hz
5- 400V - 3N - 50 Hz
Operating range
M - Medium temperature.
The unit is suitable to produce
water at medium temperature
Refrigerant type
0 - R410A
Acoustic setting up
AB - Base setting up
Unit version
VB - Base version
N° compressors
Unit model
HXW LT

6
GENERAL FEATURES
Description of components
External structure. Basement, lateral panels and upper panel,
are thermally and acoustically insulated in order to minimize
thermal losses and noise emissions in the surroundings.
Accessibility to internal parts is possible removing the frontal
panel, the upper panel and the electrical board panel. For
extraordinary manteinances also the lateral panel can be
removed.
Refrigerant circuit. It is contained inside a compartment
separated from the hydraulic circuit to simplify maintenance and
control operations.
The hermetic scroll compressor (1) is mounted on damper
supports and is protected against overtemperatures and
overcurrents.
The heat exchangers on the plant side (2) and on the source
side (3) are realized with brazed stainless steel plates, properly
insulated to avoid condensate generation and to minimize
thermal losses, and protected by a flow switch that detects
whatever water flow lack.
The expansion device (4), a thermostatic expansion valve with
external equalizer, allows the unit to adjust itself to the different
operating conditions keeping steady the set superheating.
The refrigerant circuit of each unit contains moreover solid
core hermetic filter dryer (5) to restrain impurity and moisture
residuals that could be present in the circuit, high and low
pressure switches in order to assure the compressor to
operate inside the permitted limits, 4 way reverse cycle valve
(6) to allow operating mode change reversing the refrigerant
flow (only for reversible heat pumps), pressure connections
SAE 5/16” - UNF 1/2” - 20 equipped with pin, gasket and blind
nut, as required for the use of R410A refrigerant (they allow
the complete check of the refrigerant circuit : compressor inlet
pressure, compressor outlet pressure, thermostatic expansion
valve upstream pressure and pressure drops accross the filter).
All the pipes of the refrigerant circuit are properly insulated to
avoid condensate generation and to minimize thermal losses.
Hydraulic circuit. All the pipes are thermally insulated to avoid
condensate generation and minimize thermal losses. The
hydraulic circuit on the plant side is equipped with expansion
vessel, safety valve and manometer and can be equipped with
a standard, high head or modulating circulation pump (option).
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 connected.
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 sensor,
to be installed outside, in order to realize the climatic control.
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3
4
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GENERAL FEATURES
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 temperatu-
re (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 domestic
hot water (3 steps logic)
- solar panels integration
- supplementary heat sources integration
- room humidity control for cooling with radiant systems
- internal programmer clock (for heating, cooling and domestic
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, wi-
red or wireless remote thermostats are available which allow to
control all the operating parameters of the unit and to acquire
the temperature in the different zones in order to realize a more
precise and comfortable control.
The unit controller is able to manage a lot of different plant so-
lutions enabling automatically the necessary control algorythms
according to the components which have been connected. The
management 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 outputs required
to fulfil a complete system.
Room temperature
20.5 C
18:28
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)
Control system

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GENERAL FEATURES
Options
Not reversible heat pump (IH) without options Reversible heat pump (IP) without options
Plant side
ow rate
management
Pump
(standard, high head or modulating)
Allows the circulation of the water on the plant side.
With the modulating pump is possible to control the ow rate in order to keep
constant the temperature difference between inlet and outlet.
Soft 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 different 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 necessary 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.
Option “Plant side flow rate management”
Pump (standard or high head or modulating)

9
GENERAL FEATURES
Accessories
Rubber vibration dampers Allow to reduce the transmission to the unit support plane of the mechanical vibrations generated by the compressor
and by the pumps in their normal operating mode.
Plant tank Allows to increase the thermal inertia of the plant and to guarantee a higher stability of the water sent
to the hydronic distribution circuits.
Remote thermostat
(wired or wireless)
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.
LPB bus interface Connected to the unit controller, allows to communicate on the LPB bus, required for the cascade management.
Wireless transmitter Connected to the unit controller, allows to communicate with the wireless remote control and the wireless outdoor
temperature sensor.
BSB wireless transmitter Connected to the communication bus (BSB) of the unit controller, allows to communicate with the wireless remote
control and the wireless outdoor temperature sensor.
Wireless repeater Extends wireless operating range.
Wireless adaptor for
outdoor 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 ow temperature control when condensate generation occurs.
Room hygrostat In cooling mode it allows the minimum ow temperature control according to the room humidity.
Room humidity sensor
(with or without display)
In cooling mode it allows the minimum ow 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.
1
2
3
4
Tank in the ow
The tank allows to increase the thermal inertia of the system.
The distribution circuits must be designed taking into account
the minimum water ow rate to be guaranteed through the heat
pump and the required available static heads.
The heat pump control is based on the return temperature which
is steadily monitored keeping always running the heat pump cir-
culation pump.
Primary - secondary tank
The tank, besides increasing the thermal inertia of the system,
operates also as hydraulic separator allowing an optimized ma-
nagement of the distribution circuits of the plant.
The heat pump control is based on the tank temperature and the
heat pump circulation pump is activated only when necessary.
1
2
3
4
HEAT
PUMP PLANT
HEAT
PUMP PLANT
ACCESSORY : Plant tank
The tank is equipped with 4 hydraulic ttings and can therefore be congured either as tank in the ow or as primary-secondary tank
modifying the connection pipes with the heat pump.

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Technical data
GENERAL FEATURES
Frame 1
Model 12.1 14.1 17.1 20.1 23.1 27.1 U.M.
Power supply 230 - 1 - 50
400 - 3N - 50
230 - 1 - 50
400 - 3N - 50
230 - 1 - 50
400 - 3N - 50 400 - 3N - 50 400 - 3N - 50 400 - 3N - 50 V-ph-Hz
Refrigerant
Type R410A R410A R410A R410A R410A R410A -
Compressor
Type scroll scroll scroll scroll scroll scroll -
Quantity 111111n°
Power steps 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 %
Oil charge 0,75 1,20 1,80 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 111111n°
Water volume 1,90 1,90 2,56 2,56 3,33 3,33 l
Source 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 111111n°
Water volume 2,56 2,56 3,33 3,33 4,18 4,18 l
Plant side hydraulic circuit
Safety valve set point 333333bar
Expansion vessel volume 555555l
Plant side pump - standard (option)
Type 3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump -
Quantity 111111n°
Installed power 0,21 0,21 0,21 0,21 0,21 0,21 kW
Plant side pump - high heaed (option)
Type 3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump
3 speed
glandless pump -
Quantity 111111n°
Installed power 0,41 0,41 0,41 0,41 0,41 0,41 kW
Plant side pump - modulating (option)
Type inverter
glandless pump
inverter
glandless pump
inverter
glandless pump
inverter
glandless pump
inverter
glandless pump
inverter
glandless pump -
Quantity 111111n°
Installed power 0,14 0,14 0,14 0,14 0,14 0,14 kW
Plant tank (accessory)
Volume 90 90 90 90 90 90 l