Ferroli KSR Installation And Operation Manual

KSR

AIR - WATER
HEAT PUMPS
FOR SPLITTED 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

3

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

TECHNICAL DATA AND PERFORMANCES                                                              11

Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

NOMINAL performances - Base acoustic setting up (AB) - Radiant plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

NOMINAL performances - Base acoustic setting up (AB) - Standard plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

NOMINAL performances - Low noise acoustic setting up (AS) - Radiant plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

NOMINAL performances - Low noise acoustic setting up (AS) - Standard plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

HEATING performances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

COOLING performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Plant side hydraulic performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Domestic hot water side hydraulic performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Operating limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Noise levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Overall dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Minimum operating area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

CONNECTIONS                                                                                    23

Hydraulic connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Refrigerant connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

RECEIVING AND POSITIONING                                                                       29

Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

START UP                                                                                         30

Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CONTROL SYSTEM                                                                                 31

Control system configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Heating and cooling circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Control system devices installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Wireless devices connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Control system using . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Control system programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Remote thermostat programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Remote control (wired o wireless) programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Functions available for the use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Alarms table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Controller technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Sensors features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

MAINTENANCE                                                                                    48

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

SAFETY AND POLLUTION                                                                           49

General considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Refrigerant safety card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

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 must be installed partially outdoor and partially indoor and 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 A35W18
E - Capacity in heating (heat pump) at the condition A7W35
F - Power input in cooling at the condition A35W18
G - Power input in heating (heat pump) at the condition A7W35
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

5

IP 71 VB AB 0 M 1

GENERAL FEATURES

Unit description

This series of air-water heat pumps satises the heating, cooling
and domestic hot water production requirements of residential
plants of small and medium size.
All the units are suitable for splitted installation (indoor unit and
outdoor unit connected through refrigerant pipes) and can be
applied to fan coil plants, radiant oor plants and high efciency
radiators plants.
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 do­mestic hot water management. The possibility of solar panels or
other heating sources integration is also available.
The heating function optimizes the ow 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 independent
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 oor
plants, to avoid condensate generation, 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 heat pump is composed by an indoor unit (motocondensing
unit) containing the hydraulic circuit, the electrical board, the
compressor and a part of the refrigerant circuit and an outdoor
unit (remote evaporator).

The refrigerant circuit, contained in an extractable box to simplify
the maintenance operations, is equipped with rotary compres­sor mounted on damper supports, brazed plate heat exchanger,
thermostatic expansion valve and reverse cycle valve and liquid
receiver.
The circuit is protected by high and low pressure switches and
ow switches on the plate heat exchanger.
The plate heat exchanger and all the hydraulic pipes are ther­mally insulated to avoid condensate generation and to reduce
thermal losses.
The outdoor structure of the indoor unit and the refrigerant cir­cuit box are both thermally and acoustically insulated in order to
create a double wall against sound propagation and to allow the
installation in domestic places.
To avoid vibration propagation towards the hydraulic circuit the
refrigerant circuit box is placed on damper supports and the con­nection pipes are exible.
The outdoor unit is composed by nned coil made of copper
pipes and aluminium louvered fins and axial fan with safety pro­tection grilles. The fan, supplied with DC motor and electronic ro­tational speed control, guarantees high efficiency and low noise
in all the operating conditions.
All the units are supplied with an outdoor temperature sensor in
order to realize the climatic control.
All the units are accurately built and individually tested in the
factory. Only electric, hydraulic and refrigerant (between indoor
and outdoor units) 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

IP - Units suitable for hydronic plant
installation operating as reversible heat
pumps

Power supply

1 - 230V - 1 - 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
AS - Low noise setting up

Unit version

VB - Base version

N° compressors

Unit model

KSR

6

GENERAL FEATURES

Description of components

Indoor unit structure Basement, lateral panels and frontal

panel, are completely 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 and the upper panel. For extraordinary
manteinances also the rear panel can be removed.

Outdoor unit structure Basement, supporting structure and
lateral panels are made of galvanized and painted sheet-steel to
guarantee good resistance to atmospheric agents. Accessibility
to internal parts is possible removing the frontal panel. For
extraordinary manteinances also the other panels can be
removed.

Refrigerant circuit All the components of the refrigerant circuit,
except the finned coil, are contained inside an extractable box
placed in the indoor unit to simplify the maintenance operations.
The box is placed on rubber vibration dampers and is connected
to the hydraulic circuit through flexible pipes in order to avoid
the propagation of the vibrations generated by the compressor
outside the unit. The hermetic rotary compressor (1) is mounted
on damper supports and is protected against overtemperatures
and overcurrents. The heat exchangers on the plant side (2) is
a brazed stainless steel plate heat exchanger, properly insulated
to avoid condensate generation and to minimize thermal losses,
and protected by a flow switch that detects whatever water
flow lack. The source side heat exchanger (3) is a finned coil
realized with grooved copper pipes and hydrophilic aluminium
fins with waved profile to increase the heat exchange coefficient.
A tray is placed under the coil to collect the condensate generated
in heating mode. The expansion device (4), an electronic
expansion valve, 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,
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.

The axial fan (8) is equipped with an high efficiency electronically
commutated (EC) motor, is contained ia a sheet nozzle and is
equipped with a safety grille.

Hydraulic circuit All the pipes are thermally insulated to avoid
condensate generation and minimize thermal losses. The circuit
is equipped with a three speed glandless pump, expansion
vessel, safety valve, pressure gauge 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 connected.
The user interface, placed on the frontal panel of the unit, 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.

1

7

2

6

4

5

7

GENERAL FEATURES

Control system

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
temperature (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

- 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 standard user interface present on all the units,
wired 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
solutions 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 full a complete system.

FS

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)

8

GENERAL FEATURES

Options

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 buffer tank connections"

Reversible heat pump (IP) without options Option “Integrative electrical heaters”

Domestic hot water
production

3 way valve

Allow to divert the hot water produced by the heat pump from the heating circuit
to the domestic hot water circuit.

3 way valve with
primary heat exchanger

The hot water is diverted by the three way valve on an internal heat exchanger.
An internal pump assures a correct domestic hot water ow through the other
side of the heat exchanger.

3 way valve with secondary heat
exchanger
(for integrated tank)

The hot water is diverted by the three way valve in a tank integrated in the unit
(accessory). The domestic hot water is generated istantaneously by means of an
internal heat exchanger and a modulating pump.

Acoustic
setting up

AS - Low noise setting up

Allow to reduce the noise level of the outdoor unit modifying the rotational speed
of the fan.

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.

Soft starter Reduces the compressor start current.

Plant buffer tank connections

The hot or cold water produced by the heat pump is used to heat or cool a buffer
tank integrated in the unit (accessory) assuring a higher thermal inertia for the
plant.

In this configuration the heat pump can
heat or cool a buffer tank that increases
the thermal inertia of the plant and
operates as hydraulic separator.

NB If the integrated tank is used as
buffer tank for the plant, it can not be
used as tank for the domestic hot water
production (see option "3 way valve and
secondary heat exchanger").

FS





FS





9

GENERAL FEATURES

In this configuration the heat pump can
be coupled to a domestic hot water
tank equipped with a coil designed for
a maximum water temperature between
55°C and 60°C.

The anti legionella cycles have to be
performed by means of electrical heaters
placed on the heat pump outlet (see
option “Integrative electrical heaters”) or
directly inside the tank.

In this configuration the heat pump can
be coupled to a domestic hot water tank
without coil.

The anti legionella cycles have to be
performed by means of electrical heaters
placed on the heat pump outlet (see
option “Integrative electrical heaters”) or
directly inside the tank.

In this configuration the heat pump can
produce instantaneously the domestic
hot water using the hot water stored
in the tank integrated in the unit (see
accessory “Integrated tank”).

The temperature of the domestic hot
water at the unit outlet is adjusted
modulating the speed of the pump on
the primary side.

The anti legionella cycles are not
necessary.

Option “Domestic hot water production”

3 way valve

3 way valve with primary heat exchanger

3 way valve with secondary heat exchanger

FS









FS









FS

FS









4

3

10

GENERAL FEATURES

Accessories

Rubber vibration dampers
(for indoor unit)

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.

Rubber vibration dampers
(for outdoor unit)

Allow to reduce the transmission to the unit support plane of the mechanical vibrations generated by the fans in
their normal operating mode.

Coil protection grille
(for outdoor unit)

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
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.

Integrated tank

Integrated tank, to be installed under the unit. It can be used as storage tank for domestic hot water production
(coupled with units with option "Domestic hot water production" : "3 way valve and secondary heat exchanger") or
as buffer tank for the plant (coupled with units with option "Plant buffer tank connections".
Inside the tank a coil for solar panels integration is contained.

Pipes for solar panels
connection

Allow to move the connections of the solar integration coil, available on the tank (accessory), directly on the upper
side of the unit.

Refrigerant circuit box If a failure occurs inside the refrigerant circuit, it permits to restart the heat pump very quickly.

11

TECHNICAL DATA AND PERFORMANCES

Frame

1

Model

31 41 51 71 91

U.M.

Power supply

230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz

Technical data

Refrigerant

Type

R410A -

Compressor

Type

rotary -

Quantity

1 1 1 1 1 n°

Power steps

0 - 100 0 - 100 0 - 100 0 - 100 0 - 100 %

Oil charge

0,35 0,43 0,67 1,13 1,13 kg

Plant side heat exchanger

Type

stainless stee brazed plates -

Quantity

1 1 1 1 1 n°

Water volume

0,53 0,53 0,53 0,67 0,84 l

Fans

Type

axial with high efficiency EC motor -

Quantity

1 1 1 1 1 n°

Diameter

450 450 450 500 500 mm

Maximum rotational speed

900 900 900 900 900 rpm

Total installed power

0,15 0,15 0,15 0,21 0,21 kW

Source side heat exchanger

Type

finned coil -

Quantity

1 1 1 1 1 n°

Frontal surface

0,44 0,44 0,44 0,44 0,44 m

2

Plant side hydraulic circuit

Safety valve set point

3 3 3 3 3 bar

Expansion vessel volume

10 10 10 10 10 l

Plant side pump

Type

3 speed glandless pump -

Quantity

1 1 1 1 1 n°

Installed power

0,14 0,14 0,14 0,14 0,14 kW

Integrated tank (accessory)

Volume

120 120 120 120 120 -

Solar coil surface

1,1 1,1 1,1 1,1 1,1 m

2

Integrative electrical heaters (option)

Total installed power

9,0 9,0 9,0 9,0 9,0 kW

Power steps

0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100 0 - 33 - 66 - 100

%

12

TECHNICAL DATA AND PERFORMANCES

Frame

1

Model

31 41 51 71 91

U.M.

Power supply

230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz

NOMINAL performances - Base acoustic setting up (AB) - Radiant plants

NOMINAL performances - Base acoustic setting up (AB) - Standard plants

Data declared according to EN 14511 The values are referred to units without options or accessories.

Data declared according to EN 14511 The values are referred to units without options or accessories.

IP

Heating A7W35 ( source : air in 7°C d.b. 6°C w.b. / plant : water in 30°C out 35°C )

Heating capacity 2,42 3,85 5,24 6,87 8,37

kW

Power input 0,85 1,35 1,88 2,44 3,00

kW

COP 2,85 2,85 2,79 2,82 2,79

-

Water flow rate plant side 417 664 905 1186 1447

l/h

Available static head plant side 60 54 47 43 40

kPa

Heating A2W35 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 30°C out 35°C )

Heating capacity 1,99 3,15 4,33 5,65 6,90

kW

Power input 0,55 0,88 1,23 1,59 1,96

kW

COP 3,62 3,58 3,52 3,55 3,52

-

Water flow rate plant side 345 545 748 977 1193

l/h

Available static head plant side 62 57 51 48 46

kPa

Cooling A35W18 ( source : air in 35°C d.b. / plant : water in 23°C out 18°C )

Cooling capacity 2,52 4,00 5,46 7,14 8,72

kW

Power input 0,79 1,25 1,74 2,27 2,78

kW

EER 3,19 3,20 3,14 3,15 3,14

-

Water flow rate plant side 435 690 943 1235 1507

l/h

Available static head plant side 60 53 45 41 38

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 2,35 3,72 5,11 6,67 8,15

kW

Power input 0,68 1,09 1,51 1,96 2,42

kW

COP 3,46 3,41 3,38 3,40 3,37

-

Water flow rate plant side 409 647 887 1158 1413

l/h

Available static head plant side 60 54 47 43 41

kPa

Heating A2W45 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 40°C out 45°C )

Heating capacity 1,94 3,08 4,22 5,52 6,73

kW

Power input 0,68 1,08 1,50 1,95 2,39

kW

COP 2,85 2,85 2,81 2,83 2,82

-

Water flow rate plant side 337 535 732 958 1168

l/h

Available static head plant side 62 57 52 49 47

kPa

Cooling A35W7 ( source : air in 35°C d.b. / plant : water in 12°C out 7°C )

Cooling capacity 1,94 3,08 4,20 5,50 6,71

kW

Power input 0,73 1,16 1,61 2,09 2,57

kW

EER 2,66 2,66 2,61 2,63 2,61

-

Water flow rate plant side 333 529 722 945 1153

l/h

Available static head plant side 62 58 52 50 48

kPa

Frame

1

Model

31 41 51 71 91

U.M.

Power supply

230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz

13

TECHNICAL DATA AND PERFORMANCES

Frame

1

Model

31 41 51 71 91

U.M.

Power supply

230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz

NOMINAL performances - Low noise acoustic setting up (AS) - Radiant plants

NOMINAL performances - Low noise acoustic setting up (AS) - Standard plants

Data declared according to EN 14511 The values are referred to units without options or accessories.

Data declared according to EN 14511 The values are referred to units without options or accessories.

IP

Heating A7W35 ( source : air in 7°C d.b. 6°C w.b. / plant : water in 30°C out 35°C )

Heating capacity 2,28 3,61 4,95 6,47 7,90

kW

Power input 0,54 0,86 1,20 1,56 1,92

kW

COP 4,22 4,20 4,13 4,15 4,11

-

Water flow rate plant side 395 625 855 1119 1366

l/h

Available static head plant side 61 55 48 44 42

kPa

Heating A2W35 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 30°C out 35°C )

Heating capacity 1,89 3,00 4,11 5,37 6,56

kW

Power input 0,53 0,85 1,19 1,54 1,90

kW

COP 3,57 3,53 3,45 3,49 3,45

-

Water flow rate plant side 327 519 710 928 1134

l/h

Available static head plant side 62 58 53 50 48

kPa

Cooling A35W18 ( source : air in 35°C d.b. / plant : water in 23°C out 18°C )

Cooling capacity 2,42 3,85 5,24 6,87 8,37

kW

Power input 0,85 1,35 1,88 2,44 3,00

kW

EER 2,85 2,85 2,79 2,82 2,79

-

Water flow rate plant side 417 664 905 1186 1447

l/h

Available static head plant side 60 54 47 43 40

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 2,23 3,54 4,85 6,34 7,74

kW

Power input 0,66 1,05 1,46 1,90 2,34

kW

COP 3,38 3,37 3,32 3,34 3,31

-

Water flow rate plant side 388 615 841 1101 1344

l/h

Available static head plant side 60 55 48 45 42

kPa

Heating A2W45 ( source : air in 2°C d.b. 1°C w.b. / plant : water in 40°C out 45°C )

Heating capacity 1,85 2,92 4,00 5,24 6,40

kW

Power input 0,65 1,04 1,44 1,89 2,32

kW

COP 2,85 2,81 2,78 2,77 2,76

-

Water flow rate plant side 322 508 695 909 1111

l/h

Available static head plant side 62 58 53 50 48

kPa

Cooling A35W7 ( source : air in 35°C d.b. / plant : water in 12°C out 7°C )

Cooling capacity 1,86 2,96 4,04 5,28 6,44

kW

Power input 0,79 1,25 1,73 2,26 2,77

kW

EER 2,35 2,37 2,34 2,34 2,32

-

Water flow rate plant side 319 508 693 908 1107

l/h

Available static head plant side 62 58 53 50 49

kPa

Frame

1

Model

31 41 51 71 91

U.M.

Power supply

230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 230 - 1 - 50 V-ph-Hz

14

TECHNICAL DATA AND PERFORMANCES

HEATING performances

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
operating 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

Outlet temperature

plant side :

A = 55°C

B = 45°C

C = 35°C

D = 25°C

Heating capacity

Inlet air temperature w.b. [°C]

Inlet air temperature w.b. [°C] Inlet air temperature w.b. [°C]

Power input COP

D

C

B

A

A

B

C

D

A

B

C

D

15

TECHNICAL DATA AND PERFORMANCES

COOLING performances

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
operating 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

Cooling capacity

Inlet air temperature w.b. [°C]

Inlet air temperature d.b. [°C] Inlet air temperature d.b. [°C]

Power input EER

A

B

C

D

A

B

C

D

A

B

C

D

16

TECHNICAL DATA AND PERFORMANCES

Plant side hydraulic performances

A = unit with option “Domestic hot water production” : “3 way valve”

B = unit with option “Integrative electrical heaters”

The graphs are referred to units operating with water at the temperature of 10°C (density 1000 kg/m3).

Flow rate [ l/h ]

Pressure drops [ kPa ]

B

A

Available static head - unit without options

Flow rate [ l/h ]

Available static head [ kPa ]

7.1

3.1

4.1

5.1

9.1

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