Tecnoclima BESST Series Manual

TECHNICAL INFORMATION ASSEMBLY, USE AND
MAINTENANCE INSTRUCTIONS
Reversible heat pumps
BESST - BESST/R SERIES

2
Dear Customer,
We thank you for preferring one of our machines, an innovative, modern and high-quality product which will ensure you
wellness, noiselessness and safety for a long time, especially if you rely on TECHNOCLIMA Technical Support Service
which is specifically instructed and trained to maintain your unit at the maximum efficiency level with lower operating costs
and which has
original spare parts available in case of need.
This instruction manual contains important indications and suggestions which must be followed for a simpler installation and
the best possible use of the unit.
Thank you once again,
Tecnoclima S.p.A
CONFORMITY
Reversible heat pumps:
• Machinery Directive 98/37/CEE;
• Low Voltage Directive 73/23/CEE;
• Pressure Equipment Directive 97/23/EEC. Module A1
• Electromagnetic Compatibility Directive 89/336/EEC.
RANGE
This manual makes reference to the TYPES of module. The following table shows the TYPES and their matching
COMMERCIAL NAMES.
TYPE MODEL CODE
1 BESST 11 3TRITFR006
2 BESST 12 3TRITFR008
3 BESST 21 3TRITFR009
4 BESST 22 3TRITFS015
5 BESST 31 3TRITFS018
6 BESST 32 3TRITFS020
7 BESST 41 3TRITFS027
8 BESST 42 3TRITFS036
9 BESST/R 11 3TRITFL006
10 BESST/R 12 3TRITFL008
11 BESST/R 21 3TRITFL009
12 BESST/R 22 3TRITFM015
13 BESST/R 31 3TRITFM018
14 BESST/R 32 3TRITFM020
15 BESST/R 41 3TRITFM027
16 BESST/R 42 3TRITFM036
WARRANTY
The unit is covered by a SPECIFIC WARRANTY, taking effect from the purchase date which must be proved by the user.
Should he not be able to prove it, the warranty will take effect from the appliance manufacture date. The warranty conditions
are detailed in the WARRANTY CERTIFICATE provided with the equipment.
MAKE SURE this instruction manual IS ALWAYS KEPT TOGETHER WITH THE APPLIANCE, so that the user, installer
and maintenance qualified personnel can refer to it.
If you sell or transfer the appliance to another proprietor or if you move and leave the appliance, make sure that the
instruction manual always accompanies the unit, so that the new proprietor and/or installer can refer to it.
This manual comprises 40 pages.

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TABLE OF CONTENTS
GENERAL
CONFORMITY................................................................................................................................................................... 2
RANGE............................................................................................................................................................................... 2
WARRANTY....................................................................................................................................................................... 2
GENERAL DIRECTIONS................................................................................................................................................... 4
FUNDAMENTAL SAFETY RULES..................................................................................................................................... 5
EQUIPMENT DESCRIPTION............................................................................................................................................. 6
TECHNICAL DATA - WEIGHTS......................................................................................................................................... 7
ELECTRIC BOARD AND MULTIFILAR WIRING DIAGRAM.............................................................................................. 9
COOLING CIRCUIT......................................................................................................................................................... 14
ACCESSORIES ............................................................................................................................................................... 15
CONTROL PANEL........................................................................................................................................................... 15
FAULT INDICATIONS...................................................................................................................................................... 17
SYSTEM MANAGER
SWITCHING ON AND OFF.............................................................................................................................................. 17
INACTIVITY FOR A LONG PERIOD INACTIVITY FOR A LONG PERIOD...................................................................... 19
CL CLE CLEANING ......................................................................................................................................................... 19
MAINTENANCE............................................................................................................................................................... 19
USEFUL INFORMATION................................................................................................................................................. 19
INSTALLER
UPON RECEIVING THE PRODUCT ............................................................................................................................... 20
HANDLING AND TRANSPORT....................................................................................................................................... 20
LOCATION....................................................................................................................................................................... 21
HYDRAULIC CONNECTIONS......................................................................................................................................... 22
DIMENSIONS................................................................................................................................................................... 23
ELECTRICAL CONNECTIONS........................................................................................................................................ 25
ENABLING THE “SO” AND “SEI” CONTROLS”............................................................................................................... 29
FILLING AND EMPTYING THE SYSTEM........................................................................................................................ 29
RECOMMENDED WORKING CONDITIONS................................................................................................................... 30
WORKING LIMITS........................................................................................................................................................... 30
PREPARETION
PREPARATION FOR FIRST COMMISSIONING............................................................................................................. 31
FIRST COMMISSIONING................................................................................................................................................ 31
SWITCHING THE EQUIPMENT ON AND OFF ............................................................................................................... 32
DEFROSTING CONTROL ............................................................................................................................................... 35
CHECKS DURING AND AFTER THE FIRST COMMISSIONING.................................................................................... 35
INACTIVITY FOR A LONG PERIOD................................................................................................................................ 35
ORDINARY MAINTENANCE ........................................................................................................................................... 35
EXTRAORDINARY MAINTENANCE ............................................................................................................................... 36
COMPRESSOR ............................................................................................................................................................... 36
CONTROL AND DISPLAY PARAMETERS...................................................................................................................... 36
TROUBLESHOOTING..................................................................................................................................................... 38
Symbols with the following meanings are used in some parts of the manual:
CAUTION = For actions requiring special care and adequate training.
FORBIDDEN = For actions which SHOULD NEVER be done.

4
IDENTIFICATION
The unit can be identified through:
- - Rating plate
It bears the technical and performance data of the equipment.
Should this plate be damaged or mislaid, ask your local Technical Support Service for a duplicate.
Tampering with the rating plate, removing it or whatever else does not allow a sure identification of the product hinder
any installation or maintenance interventions.
GENERAL DIRECTIONS
After unpacking the appliance, check it for integrity and completeness. Should the content not match your order, please contact the retailer
who sold the equipment.
The equipment must be installed by a qualified company which, at the end of the work, must provide the proprietor with a declaration of
conformity stating that the installation complies with the best practice and the applicable national and local regulations, as well as the
indications of this instruction manual.
These appliances were made for room air heating and/or conditioning and must be destined for this use consistently with their performance
characteristics.
The manufacturer does not assume any contractual or extra-contractual liability for damages caused to people, animals or things by
installation, adjustment and maintenance errors or improper use.
In case of water leakage, turn OFF the main system circuit breaker and close the water taps.
Immediately call the Technical Support Service or professionally qualified personnel and do not personally intervene on the equipment.
The appliance contains refrigerant gas R 410A; act carefully in order not to damage the gas circuit and the finned coil. In case of refrigerant
leakage, turn OFF the main system circuit breaker. Immediately call the Technical Support Service or professionally qualified personnel and
do not personally intervene on the equipment.
The appliances must be exclusively equipped with original accessories. The manufacturer is not responsible for any damages resulting from
the improper use of the appliance and the use of non-original accessories and materials.
The references to laws, regulations, directives and technical standards mentioned in this manual have a mere informational purpose and are
valid at the printing date of the same. The manufacturer cannot be bound towards third parties on account of new regulations or
amendments to those already in force.
The installations to be made (gas piping, electric power supply, etc.) must be adequately fixed and avoid the risk of stumbling.
The manufacturer is responsible for the conformity of his product to the laws, directives and standards which were in force at the time of
marketing.
The knowledge and observance of regulations and standards about the system designing, installation, operation and maintenance are at the
exclusive charge of the designer, installer and user according to their spheres of competence.

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The manufacture is not held responsible for the non-observance of the instructions contained in this manual, for the consequences of any
unexpected operation or for any translations from which wrong interpretations may arise.
This appliance must be installed in accordance with the applicable national and local regulations and must be only used in a sufficiently
ventilated environment. Carefully read the instructions before installing and operating this equipment.
Should the unit be connected in parallel to a boiler, close the chiller cocks during the boiler operation.
The temperature of the circulating water inside the chiller should never exceed 60°C.
If you are not going to use the equipment for a long time, please do the following:
– Turn OFF the main system circuit breaker
– Close the water taps
– If there is danger of freezing, make sure an antifreeze liquid has been added to the system, otherwise empty the system.
This instruction manual is an integral part of the appliance, therefore it must be kept with care and ALWAYS accompany the appliance if it is
transferred to another proprietor or user or moved to another system.. Should this manual be damaged or mislaid, ask your local Technical
Support Service for a new copy.
The repair or maintenance work must be carried out by the Technical Support Service or qualified personnel according to the prescriptions of
this manual. Do not alter or tamper with the appliance as this may lead to dangerous situations, and the manufacturer of the appliance will
not be held responsible for any damages caused.
Under adverse visibility conditions, use lighting devices enabling a perfect vision of all parts and components.
The refrigerant fluid contained in the refrigerating circuit is R-410A and it is not classified as dangerous in accordance with directive
1999/45/EC and relevant amendments.
Avoid high steam concentrations which may cause headache, vertigo, somnolence, nausea and other troubles.
In case of skin contact with the liquid, there is a residual risk of freezing through fast evaporation. Seek medical advice.
In case of inhalation, breath fresh air. Administer oxygen if breathing is difficult. Seek medical advice.
In case of eye contact, immediately flush with running water for at least 15 minutes. Seek medical advice.
The refrigerant fluid must be disposed of through authorized waste-disposal companies. In any case, the fluid must be recovered in proper
storage tanks.
FUNDAMENTAL SAFETY RULES
We remind you that the use of products using electric power, gas or gas oil entails the observance of some fundamental safety
rules, like the following:
The use of the appliance by children and unattended disabled people is prohibited.
Do not touch the appliance while barefoot and with wet or humid body parts.
Do not perform any cleaning or maintenance before disconnecting the appliance from the mains (by turning OFF the main system circuit
breaker).
The safety and setting devices should not be altered without the appliance manufacturer’s consent and indications.
Do not pull, tear or twist the electrical cables on the appliance, although this is disconnected from the mains.
Do not insert sharp objects through the air intake and supply grilles.
Do not open the equipment’s internal part access doors without first turning off the main system circuit breaker.
Do not abandon or leave to the children’s reach the packing material (cardboard, iron bands, plastic bags, etc.) as this is a potential source
of danger.
Do not install the appliance in environments with an aggressive atmosphere.
Do not place any objects onto the equipment, nor slide them through the grille.
Do not use any adapters, multiple-outlet sockets or extensions for the electrical connection of the appliance.
Do not distribute this product in different countries, since it must be modified as to technical documentation and layout.
Do not perform any maintenance before disconnecting the appliance from the mains (by turning OFF the main all-pole system circuit
breaker).

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EQUIPMENT DESCRIPTION
The units are divided into two families:
–HEAT PUMPS, BESST series: some available with single-
phase power supply, others with three-phase power
supply, capable of producing both hot water for heating
and cold water for cooling household, residential and
industrial environments.
–HEAT PUMPS, BESST/R series: also available with three-
and single-phase power supply, capable of producing both
hot water for heating and cold water for cooling household,
residential and industrial environments and provided with
supplementary electrical resistor for correct operation
even under very critical weather conditions.
They are used in combination with terminal or fan-coil units in small
and medium-large systems.
They are designed for outdoor installation and the used materials
have been selected to meet this special requirement.
They use a scroll-type rotating compressor, mounted on
antivibration supports inside an adequate compartment, and
electronically-controlled variable-speed helical fans, which
ensure particularly noiseless operation. For three-phase
versions, a phase monitor is standard supplied to check the
proper compressor rotation.
The AISI 318 stainless steel plate heat exchanger, on utility end,
is insulated with an anti-condensation coating and complete with
a flow controller.
The units are equipped with various safety devices, such as
pressure-switches, hydrometer, sensors, specific automatic
switches and phase monitor (only for three-phase units). An
electronic, microprocessor-controlled equipment supervises the
operation. They are also provided with an inertial storage tank
which is integrated into the unit as a standard.
1 Electric board
2 Control panel
3 Magnetothermal switch
4 Cycle reversing valve
5 Dehydration filter
6 Flow controller
7 Summer thermostatic valve
8 Winter thermostatic valve
9 Scroll compressor
19 Hydraulic kit
11 Pump
12 Helical fan
13 Electrical resistor (only BESST/R)

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TECHNICAL DATA - WEIGHTS
BESST - BESST/R SERIES
Ref. UNI-EN 14511:2004 standard
TIPO 1/9 2/10 3/11 4/12 5/13 6/14 7/15 8/16
Heating capacity (1) kW 6,8 8,3 11,0 15,0 19,9 22,2 28,0 37,2
Power input (1) kW 1,74 2,11 2,81 3,61 4,28 4,83 6,48 8,44
Heating capacity (2) kW 5,9 7,2 9,5 13,0 16,6 18,9 23,8 31,7
Power input (2) kW 1,78 2,20 2,90 3,67 4,33 4,86 6,55 8,52
Heating capacity (3) kW 5,0 6,2 8,0 10,8 13,5 15,4 19,2 25,8
Power input (3) kW 1,79 2,26 2,97 3,73 4,36 4,88 6,66 8,63
Heating capacity (4) kW 6,6 8,1 10,6 14,4 18,4 21,0 26,4 34,8
Power input (4) kW 2,14 2,68 3,50 4,49 5,23 5,96 7,84 10,18
Heating capacity (5) kW 5,6 7,1 9,3 12,6 15,9 18,1 22,6 30,0
Power input (5) kW 2,16 2,77 3,60 4,60 5,26 5,99 8,00 10,33
Cooling capacity (6) kW 7,5 10,3 13,0 17,8 23,6 27,2 33,9 45,1
Power input (6) kW 1,80 2,28 2,93 3,89 4,96 5,67 7,04 9,05
Cooling capacity (7) kW 6,9 9,3 11,8 17,0 21,3 24,6 31,0 40,4
Power input (7) kW 2,00 2,72 3,46 4,56 5,78 6,60 8,13 10,51
Cooling capacity (8) kW 6,0 8,2 10,2 14,1 17,9 21,0 26,9 34,9
Power input (8) kW 1.76 2,34 3,01 3,93 5,03 5,69 7,05 9,19
Cooling capacity (9) kW 5,3 7,1 9,3 13,0 17,0 19,5 24,7 32,2
Power input (9) kW 2,04 2,81 3,58 4,65 5,85 6,66 8,22 10,71
Nominal water flow-rate
(10) m3/h 1,0 1,2 1,6 2,2 2,8 3,2 4,1 5,4
Water fitting diameter -
inches inches 3/4 3/4 1 1 1 1 1-1/4 1-1/4
Tank capacity - liters litres 16 16 36 36 57 57 70 70
Supporting resistor * kW 3,0 3,0 6,0 6,0 8,0 8,0 10,0 10,0
Supply voltage V/50Hz 230 ∼ 230 ∼ 230 ∼ 400 3N ∼ 400 3N ∼ 400 3N ∼ 400 3N ∼ 400 3N ∼
Protection degree IP 44 44 44 44 44 44 44 44
Helical fan N° 1 1 2 2 2 2 4 4
Nominal air flow-rate m3/h 3.300 3.250 6.500 6.500 8.000 8.000 14.000 13.600
Sound level (11) dB(A) 58,0 58,0 62,8 62,8 61,5 61,5 63,0 63,0
R410A refrigerant charge kg 1,7 1,9 2,7 3,1 4,9 5,5 8,2 9,6
Loadless weight kg 110 112 164 175 224 230 390 394
(1) outdoor air +7°C, water 35 – 30°C.
(2) outdoor air +0°C, water 35 – 30°C.
(3) outdoor air -7°C, water 35 – 30°C.
(4) outdoor air +7°C, water 45 – 40°C.
(5) outdoor air +0°C, water 45 – 40°C.
(6) outdoor air +30°C, water 18 – 23°C.
(7) outdoor air +35°C, water 18 – 23°C.
(8) outdoor air +30°C, water 7 – 12°C.
(9) outdoor air +35°C, water 7 – 12°C.
(10) ref. outdoor air 0°C, water 35-30°C
(11) Sound level measured under free-field conditions at 1.5 meters from fan front and 1.5 meters from the ground.
(*)only BESST/R version

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HYDRAULIC DATA
The following diagram shows the residual lifts with nominal water flow-rate ± 20%.
Do not work outside these curves
WATER FLOW RATE – LIFT DIAGRAM
WATER FLOW RATE m3/h
AVAILABLE LIFT kPa
Type 1-9
Type 2-10
Type 3-11
Type 5-13
T
yp
e 4-12
Type 6-14
Type 7-15
Type 8-16

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ELECTRIC BOARD AND MULTIFILAR WIRING DIAGRAM
The units are provided with an electric board consisting of the following components.
Factory-installed components
C
CM
CV1
F1
F2
F3
KM1
KM2
MI
Conn.A
Conn.B
P
PD
Tp
TR
Q1
Q2
SP3
ST1
ST2
ST4
PA
PB
VIC
Rp
Rc
Rs
R1 / R2
V1
(*)
Compressor
Run capacitor
Fan capacitor
Control protection fuse
Pump protection fuse
Resistor protection fuse
Compressor remote switch
Resistor remote switch
Control panel
Input terminal block
Load output terminal block
Circulating pump
Flow controller
Protection thermostat
Auxiliary circuit transformer
Automatic main breaker
Supporting resistor automatic switch
Pressure transducer
Exchanger inlet temperature probe
Exchanger outlet temperature probe
Outdoor air temperature probe
High pressure switch
Low pressure switch
Cycle reversing valve
Plate heat exchanger resistor
Compressor crankcase resistor
Supporting resistor
RP relay / Boiler contact auxiliary relay
Fan
(*) only for BESST/R version
Components to be assembled upon installation
(not supplied with the appliance)
Type 1, 2, 9, 10
AL
FL
SEI
SO
Remote alarm signaling system (12V DC output,
max 20 mA)
External flow switch
Remote SUMMER-WINTER switch
Remote ON-OFF switch
CONN A
230V 50Hz CONN B
AL-12V DC
CONN B
CONN A
CONN C
CONN C
CONN C

10
Factory-installed components
C
CM
CV1/2
F1
F2
F3
KM1
KM2
KM3
MI
Conn.A
Conn.B
P
PD
Tp
TR
Q1
Q2
SP3
ST1
ST2
ST4
PA
PB
VIC
Rp
Rc
Rs
R1 / R2
V1/2
(*)
Compressor
Run capacitor
Fan 1/2 capacitor
Control protection fuse
Pump protection fuse
Resistor protection fuse
Compressor remote switch
Resistor remote switch
Pump remote switch
Control panel
Input terminal block
Load output terminal block
Pump/ Circulating pump
Flow controller
Protection thermostat
Auxiliary circuit transformer
Automatic main breaker
Supporting resistor automatic switch
Pressure transducer
Exchanger inlet temperature probe
Exchanger outlet temperature probe
Outdoor air temperature probe
High pressure switch
Low pressure switch
Cycle reversing valve
Plate heat exchanger electrical resistor
Compressor crankcase resistor
Supporting resistor
RP relay / Boiler contact auxiliary relay
Fan 1/2
Only for BESST/R series
Components to be assembled upon installation
(not supplied with the appliance)
Type 3 and 11
AL
FL
SEI
SO
Remote alarm signaling system ((12V DC output,
max 20 mA)
External flow switch
Remote SUMMER-WINTER switch
Remote ON-OFF switch
CONN A
CONN B
CONN B
CONN A
CONN C
CONN C
CONN C

11
Factory-installed components
C
CV1/2
F1
F2
F3
KM1
KM2
KM3
MI
Conn.A
Conn.B
P
PD
Tp
TR
Q1
Q2
S1
SP3
ST1
ST2
ST4
PA
PB
VIC
Rp
Rc
Rs
R1 / R2
V1/2
(*)
Compressor
Fan 1/2 capacitor
Control protection fuse
Pump protection fuse
Resistor protection fuse
Compressor remote switch
Resistor remote switch
Pump remote switch
Control panel
Input terminal block
Load output terminal block
Pump/Circulating pump
Flow controller
Protection thermostat
Auxiliary circuit transformer
Automatic main breaker
Supporting resistor automatic switch
Phase sequence relay
Pressure transducer
Exchanger inlet temperature probe
Exchanger outlet temperature probe
High pressure switch
Low pressure switch
Cycle reversing valve
Plate heat exchanger electrical resistor
Compressor crankcase resistor
Supporting resistor
RP relay / Boiler contact auxiliary relay
Condensation fans 1/2
Only for BESST/R series
Components to be assembled upon installation
(not supplied with the appliance))
Type 4 and 12
AL
FL
SEI
SO
Remote alarm signaling system (12V DC output,
max 20 mA)
Secondary flow switch
Remote SUMMER-WINTER switch
Remote ON-OFF switch
400V 50HZ 3N
CONN A
CONN B
CONN B
CONN A
CONN C
CONN C
Rs

12
Factory-installed components
C
CV1/2
F1
F2
F3
KM1
KM2
KM3
MI
MV
Conn.A
Conn.B
P
PD
Tp
TR
Q1
Q2
S1
SP3
ST1
ST2
ST4
PA
PB
VIC
Rp
Rc
Rs
R1
V1/2
(*)
Compressor
Fan 1/2 capacitor
Control protection fuse
Pump protection fuse
Resistor protection fuse
Compressor remote switch
Resistor remote switch
Pump remote switch
Control panel
Fan modulation board
Input terminal block
Load output terminal block
Pump
Flow controller
Protection thermostat
Auxiliary circuit transformer
Automatic main breaker
Supporting resistor automatic switch
Phase sequence relay
Pressure transducer
Exchanger inlet temperature probe
Exchanger outlet temperature probe
Outdoor air temperature probe
High pressure switch
Low pressure switch
Cycle reversing valve
Plate heat exchanger electrical resistor
Compressor crankcase resistor
Supporting resistor
Boiler contact auxiliary relay
Condensation fans 1/2
Only for BESST/R series
Components to be assembled upon installation
(not supplied with the appliance)
Type 5, 6, and 13, 14
AL
FL
SEI
SO
Remote alarm signaling system (12V DC output,
max 20 mA)
Secondary flow switch
Remote SUMMER-WINTER switch
Remote ON-OFF switch
CONN A
CONN B
CONN C
CONN C
CONN C
400V 3N - 50HZ
CONN A

13
Factory-installed components
C
CV1/2/3/4
F1
F2
F3
KM1
KM2
KM3
MI
MV
Conn.A
Conn.B
P
PD
Tp
TR
Q1
Q2
S1
SP3
ST1
ST2
ST4
PA
PB
VIC
Rp
Rc
Rs
R1
V1/2/3/4
(*)
Compressor
Fan 1/2/3/4 capacitor
Control protection fuse
Pump protection fuse
Resistor protection fuse
Compressor remote switch
Resistor remote switch
Pump remote switch
Control panel
Fan modulation board
Input terminal block
Load output terminal block
Pump
Flow controller
Protection thermostat
Auxiliary circuit transformer
Automatic main breaker
Supporting resistor automatic switch
Phase sequence relay
Pressure transducer
Exchanger inlet temperature probe
Exchanger outlet temperature probe
Outdoor air temperature probe
High pressure switch
Low pressure switch
Cycle reversing valve
Plate heat exchanger electrical resistor
Compressor crankcase resistor
Supporting resistor
Boiler contact auxiliary relay
Condensation fans 1/2/3/4
Only for BESST/R series
Components to be assembled upon installation
(not supplied with the appliance)
Type 7, 8 and 15, 16
AL
FL
SEI
SO
Remote alarm signaling system (12V DC output,
max 20 mA)
Secondary flow switch
Remote SUMMER-WINTER switch
Remote ON-OFF switch
CONN A
CONN B
CONN C
CONN C
CONN C
400V 3N - 50HZ CONN B
CONN A

14
COOLING CIRCUIT
HEAT PUMP
In Winter cycle
1
2
15
54
7136
33
9
81114
10
16
12
In Summer cycle
1
2
15
1114
10
16
54
7136
33
12
9
8
COMPONENTS:
1
2
3
4
5
6
7
8
Fan
Finned coil (condenser)
Check valve
Thermostatic valve (Summer cycle)
Thermostatic valve (Winter cycle)
Filter
Liquid indicator
Flow controller
9
10
11
12
13
14
15
16
Plate heat exchanger
Cycle reversing valve
High pressure safety switch
Compressor
Liquid receiver
Low pressure safety switch
Pressure transducer
Safety valve

15
ACCESSORIES
Below is a list of available accessories to be separately ordered.
ACCESSORY CODE
Remote control kit 4TRRT02
Antivibration mount kit 4TRAV01
Soft start kit 4TRRS01
Enclosure kit 4TRKP01 - 4TRKP02 - 4TRKP03 - 4TRKP04
SUPPORTING RESISTOR.
The control panel enables all necessary settings for the heat pump operation and displaying of main
parameters and alarms.
It is located on the electric board front, inside the equipment, and can be accessed through a small door on the inspection panel.
CONTROL PANEL
The control panel enables all necessary settings for the heat pump operation and displaying of main
parameters and alarms.
It is located on the electric board front, inside the equipment, and can be accessed through a small door on the inspection panel.
Display:
During normal operation, it shows the return water temperature from the system.
It can also show the values of all set parameters and the codes of any alarms.
Alarm icon Mode (Heat; Cool…) icons Economy icon
(configurable) Clock icon
Displayed quantity measure
unit
Resource (compressor, fans…) icon Menu navigation icon

16
SET used for:
•access to machine status menu
•access to menu subfolders
•access to parameter value
•confirmation of parameter value and/or exit
•pressing and holding the key gives access to the essential display selection menu (if the key is
•configured for this function); the available options can be displayed with the up and down keys (depending on the machine configuration)
and pressing the SET key confirms the selection made.
UP used for:
• scrolling up the displayed folders and parameters
• increase of parameter value (if in parameter value change mode)
• pressing and holding the key gives access to the manual defrosting feature (if the key is configured for this feature), from essential display
only.
DOWN used for:
•scrolling down the displayed folders and parameters
•decrease of parameter value (if in parameter value change mode).
•Pressing and holding the key switches on/off the essential display device (if the key is configured for this feature)
ESC used for:
Exit from menu, parameter list, parameter value without saving it, and return to previous level. Pressing and holding the key from the
essential display (if the key is configured for this feature) gives access to the operating mode change folder; the available modes can be
displayed with the UP and DOWN keys (depending on the machine configuration), while pressing the SET button confirms the selection
made.
Simultaneously pressing SET +ESC gives access to the Parameters, Functions, Password folders, etc.
Simultaneously pressing UP +DOWN resets any alarms
Keys Press and immediately release Symbol printed on
front frame Press and hold (if key is
properly configured)
Scroll menu items, increase parameter
values Request for manual defrosting
Scroll menu items, decreases
parameter values Device switch on/off (and
vice-versa)
Manual alarm reset
Acces to machine status menu (set
point, AI,DI,DO, compl.hours,pump
hours,etc.)access to menu subfolders,
access to parameter value, confirmation
of parameter value
disp
Access to essential
display configuration
folder
Exit from menu, parameter list,
parameter value and return to upper
level
Access to operation mode
(Heat/Cool/Std-by)
selection folder
Access to programming menu

17
FAULT INDICATIONS
In case of abnormal operation of the equipment, alphanumerical
codes alternating with the system
return temperature are displayed on the control panel display.
Some alarms are automatically reset, whereas others can only be
reset by the manufacturer’s Technical Support Service.
MANUAL FAULT RESET
To reset a fault alarm after removing the cause which triggered it:
Simultaneously press UP and DOWN to reset the
alarms
DESCRIPTION INDICATION RESET
High pressure Er01 manual
Low pressure Er05 manual
Flow controller Er20 manual
Water circuit antifreeze Er30 automatic
High water temperature (over 60° C) Er35 automatic
Faulty-clock error Er45
Not-set clock error Er46
Inlet temperature probe Er60 automatic
Outlet temperature probe Er61 automatic
Outside temperature probe fault Er68 automatic
Condensation pressure probe Er75 automatic
Configuration error Er80 automatic
Compressor work hours exceeded Er81 manual
Pump work hours exceeded Er85 manual
Alarm history records exceeded Er90 manual
SWITCHING ON AND OFF
After the first commissioning by the manufacturer’s Technical Support Service, the unit is set for “automatic” operation and no further
interventions are required.
Therefore, the system manager must SWITCH ON or OFF the unit from the control panel or the
remote switch (if present).
To access the control panel, open the relevant door and do the
following:
- Remove the lock screw
- Simultaneously press the (A) points and lift the door
After operating the control panel:
- Close the door and replace the lock screw.
After powering on the unit, the OFF indication is displayed. Press the key to bring the machine to stand-by mode, from this
moment the pump should activate and the system return water temperature appear on the display. At this point, act as follows:
Switching on
To select the operating mode, press and hold the key until
“HEAT”,“COOL” or “STBY” ” is displayed, depending on the
controller’s current operation status.
Select with UP or DOWN the HEAT mode and
confirm with the SET key.

18
Heating (WINTER CYCLE))
Selecting HEAT the symbol lights up
Cooling (SUMMER CYCLE)
Selecting COOL the symbol lights up.
Switching off the heating/cooling modes
Hold for some seconds until COOL” or HEAT (cycle on) is displayed. Select with the key STBY and confirm with SET
; the symbol lights up.
The switching between Heating and Cooling modes, on
heat pump models, should be made by the
manufacturer’s Technical Support Service.
It is recommended to switch the operating mode only once
a day.
OPERATIONS MADE BY THE ON-OFF AND “SEI” SUMMER-
WINTER REMOTE SWITCHES (IF PRESENT)
Switching on the cooling mode
- Turn OFF the “SEI” SUMMER-WINTER remote switch
- Turn ON the “SO” ON-OFF remote switch
The indicator LED lights up on the control panel.
Switching off the cooling mode
- Turn OFF the “SO” ON-OFF remote switch.
The OFF indication starts flashing on the CONTROL
PANEL.
Switching on the heating mode
- Turn ON the “SEI” SUMMER-WINTER remote switch
- Turn ON the “SO” ON-OFF remote switch”.
The indicator LED lights up on the control panel..
Switching off the heating mode
Turn OFF the “SO” ON-OFF remote switch
The OFF indication starts flashing on the CONTROL
PANEL.
In case of power failure for more than four hours, after
restoring the unit, keep it powered but switched off for at
least eight hours..

19
In case of power failure for less than four hours, after
restoring the unit, keep it powered but switched off for the
same number of hours the power failed It is recommended to switch the operating mode only once a
day.
INACTIVITY FOR A LONG PERIOD INACTIVITY FOR A LONG PERIOD
If you are not going to use the equipment for a long time, please
do the following:
– Switch off the equipment, whatever its operating mode, using
the control panel
– Turn OFF the remote switch (if present)
After switching off the equipment:
– Switch off the internal terminal units by turning off the switch
of each appliance
– Turn OFF the main system circuit breaker
– Close the water taps
To put the equipment back into operation after a long
downtime, ask for the intervention of the manufacturer’s
Technical Support Service .
Should the unit be connected in parallel to a boiler, close
the equipment cocks during the boiler operation. The
temperature of the circulating water inside the heat pump
should never exceed 60°C.
If the outside temperature can drop below zero, there is a
danger of freezing.
The hydraulic system MUST BE DRAINED or an
antifreeze liquid (such as ethylene glycol) must be added
to it according to the doses recommended by the liquid’s
manufacturer. Please, contact the manufacturer’s
Technical Support Service on the matter.
CL CLE CLEANING
The only cleaning operation which the user must perform
concerns the chiller external panels which must be only cleaned
using a cloth dampened with water and soap. In the event of
resisting stains, dampen the cloth with a 50% mix of water and
denaturated alcohol or with specific products. After the cleaning,
carefully dry the surfaces.
Do not use sponges impregnated with abrasive products or
powder detergents
Do not perform any cleaning or maintenance before
disconnecting the appliance from the mains (by turning OFF
the main system circuit breaker)
MAINTENANCE
Periodical maintenance is essential to keep the equipment effective,
safe and reliable over time.
It can be done, every six months for some interventions and
every year for others, by the manufacturer’s Technical Support
Service which is technically skilled and trained and provided
with genuine spare parts, if necessary..
For equipment installed near the sea, maintenance intervals
must be cut by half.
Do not perform any maintenance before disconnecting the
appliance from the mains (by turning OFF the main all-pole
system circuit breaker).
USEFUL INFORMATION
Seller:…………………………………………………………..
Street …………………………………………………………………...
Phone.
…………………………………………………………………..
Installer: ………………………………………………………...
Mr. …………………………………………………………………..
Street ……………………………………………………………………
Phone.
……………………………………………………………………
Technical Support Service: ……………………………………….
Mr.…………………………………………………………………………..
Street…………………………………………………………………………...
Phone.……………………………………………………………………………
DATE INTERVENTION

20
UPON RECEIVING THE PRODUCT
Check if the received product is intact and whether the packing
list matches the labels on the package. Should the content not
match your order, please contact the retailer who sold the
equipment and the carrier. The units are supplied in a single
package on a wooden pallet, protected by a cardboard
wrapping, and they are accompanied by::
– instruction manual
– warranty certificate
– labels with barcodes
The instruction manual is an integral part of the equipment,
therefore we recommend you to read it and keep it with care.
.
It is recommended to remove the wrapping only when the
equipment has been positioned in the installation site.
Do not abandon the packing material or leave it to the
children’s reach, as this is a potential source of danger
HANDLING AND TRANSPORT
Handling and transport must be always carried out with the
equipment in horizontal position. If a lift truck is used, fork the
appliance on the bottom, opening wide the truck forks to the
maximum extent. If a crane is used, slide the ropes into the
upper part of the wooden base, taking care not to put pressure
on the equipment.
It is recommended to remove the wrapping only when the
equipment has been positioned in the installation site..
Once the wrapping has been removed, the units can be
handled by inserting two metal tubes (max. diameter: 33 mm,
min. thickness: 3.2 mm) into the holes provided in the base and
using adequate lifting devices.
The equipment weight is unbalanced toward the
compressor end (electric board end).
During the transport, the unit must be maintained in
vertical position only.
The appliance must be handled by qualified personnel,
adequately equipped with devices sized for the appliance
weight and dimensions
Dimension / Type 1, 2, 9, 10 3, 4, 11, 12 5, 6, 13, 14 7, 8, 15, 16
L 1140 1340 1600 1990 mm
H 950 1150 1450 1650 mm
D 480 540 580 670 mm