emmeti Mirai SMI EH0614DC Guide

INSTALLATION AND USE MANUAL
GB
MIRAI - SMI
System Manager Integrated
EH0614DC - EH1014DC - EH1314DC - EH1614DC

2
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We would like to thank you for the trust you have shown in purchasing
this product. This manual contains the product's technical specifications
and all information you need for correct use. We kindly ask that you read
this manual carefully.
The information contained in this document can be modified without any
prior notice for technical and/or commercial reasons; therefore we cannot
be held responsible for possible errors or inaccuracies contained herein.
Warning!
Store the manual in a dry place to avoid deterioration, thus enhancing
future reference.

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INDEX
1. Product Presentation ............ 4
1.1 Principal Characteristics
1.2 Cutting-Edge Technology
1.3 Ease of Installation and Maintenance
1.4 Accessories
1.5 Principal Components
1.6 Conformity to European Directives
2. Warnings ................................... 6
2.1 Attention and dangers
3. Technical Specifications .............. 8
3.1 Capacity and head helpful
3.2 Operating range
4. Movement and Transport...... 11
4.1 Identification packaging
4.2 Movement units
4.3 Removing the unit
5. Installation ............................... 13
5.1 Installation Warnings
5.2 Choice of Installation Location
5.3 Unit Dimensions
5.4 Minimum Functional Space
5.5 Condensate Drainage Pipes
5.6 Water Connections
5.7 Electronic Connection
5.8 Installation check and test operation
6. THERMOREGULATOR “SMART MT” .. 23
6.1 Screen and keyboard operation
7. List of “SMART MT” parameters... 26
8. Operating logics ....................... 34
8.1 On/Off Status of Heat Pump:
8.2 Circulator Activation
8.3 Cooling/Heating operation MODE
8.4 Limit of frequency “NIGHT MODE”
8.5 Set point 2 Activation
8.6 Logic of the climatic curves
8.7 Inverter frequency modulation
8.8 Outdoor air temperature sensor
8.9 Storage DHW heating
8.10 DHW Integral Electrical Resistance
8.11 Dehumidifier Management
8.12 Room Thermostat Outlet
8.13 Comfort/Summer Modes Time-Frames
8.14 Additional generator
8.15 0-10 Valve (Heating System)
8.16 Anti-Freeze Protection
9. Service and Maintenance.......... 40
9.1 Cleaning the heat pump
9.2 Water Condensate Drainage Check
9.3 Trouble-Shooting
9.4 SMART-MT Alarm Codes
9.5 Alarm errors on the PCB Main Display
10. Wiring diagrams ...................... 49
11. Disposal .................................. 52
11.1 Environmental safeguard information!
11.2 Disposal rules for the old air conditioner
11.3 Disposal rules of the new air conditioner packaging
Warranty ..................................... 53

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1. PRODUCT PRESENTATION
1.1 Principal Characteristics
• The reversible-cycle heat, water and air pumps have been designed for
domestic use and include inverter technology.
• MIRAI-SMI heat pumps are well known for their reliability (Made in
Japan) and relative energy efficiency. Partial-charge efficiency allows
for a high seasonal output level, along with the relevant savings in
air-conditioning.
• This cutting-edge technology guarantees an optimal comfort level for
users, both in terms of water temperature control as well as in terms of
extremely low noise levels. In fact, the required temperature is rapidly
reached without any fluctuations. The units are therefore capable of
providing optimal levels of comfort in both summer and winter modes.
• MIRAI-SMI heat pumps can operate in extreme temperatures.
1.2 Cutting-Edge Technology
• The large batteries are very efficient
• The twin rotary compressors (with inverter function) offer greater reli-
ability, lower energy consumption and are vibration-free in all opera-
tive conditions.
• The impulse modulating valve is a high-quality bi-directional balancing
device which optimises the unit and stops the refrigerant in circulation
from overheating by preventing the liquid from returning towards the
compressor. This device adds to the high performance and reliability
of the system.
• The adjustable-speed ventilators are equipped with patented rotor
blades and characterised by an innovative profile designed to guaran-
tee optimal air distribution and exceptionally low noise levels.
• The electronic control system is equipped with sensors located in key
positions of the cooling circuit to electronically detect the operating
status of the system. In fact, two micro-regulators receive impulses
from these sensors and process them using specific developed algo-
rithms to optimise the flow of the coolant and the functionality of the
most important components, that is to say the compressor, the ventila-
tor motors and the impulse modulating valve.
1.3 Ease of Installation and Maintenance
• By simply removing the cover on the electric panel, you can access
the electrical connections and the control/parameter setting devices.
• By removing the side panel, you can access the cooling circuit, the
hydraulic unit and the PCB (MAIN).
• The advanced design of the cooling circuit and the selection of compo-
nents render the unit exceptionally compact; it is easy to move even in
areas containing
narrow doorways.
1.4 Accessories
- Instructions Manual
- L-shaped condensate drainage fitting
Air intake, located on the left side
and on the rear
Terminal Block
Cable gland
Air delivery
Cover electrical
panel
PCB MAIN
Manometer
Air vent valve
Safety valve
PCB Terminal Block
Terminal Block
Compressor
Pump
1.5 Principal Components Model EH0614DC
Air intake, located on the left side
and on the rear
Terminal Block
Cable gland
Air delivery
Cover electrical
panel
PCB MAIN
Manometer
Air vent valve
Safety valve
PCB Terminal Block
Terminal Block
Compressor
Pump

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1. PRODUCT PRESENTATION
Air intake, located
on the left side and on the rear
Air
delivery
Cover
electric
panel
Terminal block
Cable gland
Access
manometric
PCB MAIN
SMART - MT
PCB Terminal Block
Terminal Block
Air vent valve
Manometer
Pump
Compressor
Safety valve
Heat Exchanger
Model EH1614DC and EH1314DC
Model EH1014DC
Air intake is situated
on the left hand side and at the back.
Air
Delivery
Electrical
Panel
Cover
Safety Valve
"SMART-MT"
PCB Terminal Block
Terminal Board
PCB Main (Display)
Inter cooler
Water Inlet Connection
Compressor
Pump
Gauge
Air vent valve
Water Outlet Connection
PCB MAIN
1.6 Conformity to European Directives
2004/108/EC (electromagnetic compatibility).
2006/95/EC (low voltage).
2012/19/EC WEEE (disposal of electrical and electronic equipment).
2011/65/EU RoHS (restriction of the use of pollutant substances in electrical and electronic equipment).
ECC/97/23 (pressurised systems).

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2. WARNINGS
MEANING OF SYMBOLS
Indicates a hazardous situation, be very careful
indicates a prohibited action.
Indicates that important instructions must be follo-
wed.
Indicates a part which must be grounded.
2.1 Attention and dangers
Before using the air conditioner please read carefully the instructions ma-
nual. Producer decline every responsibility for any damage caused by the
non-observing of the following warnings.
When this manual has been read, please make sure that further unit users
will read it as well.
User has to keep this manual close to hand and has to give it to those who
repair and move the unit. Furthermore when there is an owner change,
please let the manual at disposal of the new user. Please make sure that
the following important safe information are strictly observed.
Unit is not intended to be used by persons with reduced physical, sensory or mental abilities, or with lack of experience or acknowledge
(children included) unless they had the possibility to benefit of some monitoring or using instructions through a person responsible for their
safety. Children have to be monitored to be sure they do not play with the unit.
This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack
of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved. children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without super-
vision. caution: do not expose the electronics of your charging and drying stand or the battery charger. There are no user serviceable parts insi-
de. Tefer servicing to qualified service personnel. please ensure voltage rating for enclosed battery charger matches standard outlet voltage.
Do not place animals or plants in the normal air flow of the unit.
-
CAUTION
Divieto Divieto
Divieto
Divieto Divieto
Divieto
Alta temperatura
Applicazione
rigorosa
Do not install the air conditioner in rooms where gas leakages or
other flammable substances could occur near the units.
Maintenance operations must be carried out exclusively by
qualified technicians.
Check the good condition of the installation media. Avoid blocking the air entry and outlet grids.
This could reduce performance or cause damage to the air
conditioner.
Do not install the air conditioner near sources emitting excessive
vapours (moisture, oils, etc.).

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2. WARNINGS
MODE
ON / OFF
TIMER
ON / OFF
If you experience abnormal phenomena (eg a burning smell),
disconnect the power immediately and contact your dealer for
instructions on what to do. In this case, continue to use the air
conditioner may cause damage and create the risk of electric
shock and fire.
Spe-
gnere
Do not disassemble the unit grid.
The exposure of the fan is very dangerous as it could hurt people.
Do not place objects and not climb on
Do not pour or spray water on the air conditioner. Do not put your fingers or other objects into the sockets / outlets
and deflector swinging while the conditioner is in operation. The
high speed of the fan is very dangerous and can cause injury.
Before any maintenance remove the power supply from the air
conditioner.
Please use fuses with the right amperage only.
(Never use pieces of cable to make temporary replacements.
This might cause fires too, not just a damage.
Note for draining water
Alta temperatura
The maximum temperature for the water in the circulation is about
60 °C. Be careful to avoid burns when draining the water.
Connect the ground cable Use an exclusive power source for the heat pump to a circuit
breaker
GB
Divieto
1
2
MODE
ON / OFF
TIMER
ON / OFF
Attenzione
Esecuzione
Assoluta
Divieto Divieto
Divieto Divieto
Divieto
To avoid the possible freezing of water pipes.
Do not remove the power supply wing heat pump.
Be careful not to damage the power cord.
Hight temperature

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Technical Specifications
Models Ref. u.m. EH0614DC EH1014DC EH1314DC EH1614DC
APPLICATION USING AIR TERMINAL UNITS
Nominal Thermal Power
A7 W45
kW 6,40 9,75 13,30 16,00
Nominal Absorbed Power kW 1,99 2,83 3,76 4,70
COP 3,22 3,44 3,54 3,40
Nominal Thermal Power
A-7 W45
kW 3,70 5,90 9,10 10,60
Nominal Absorbed Power kW 1,76 2,79 4,08 4,83
COP 2,10 2,12 2,23 2,20
Nominal Cooling Power
A35 W7
kW 3,95 5,53 10,70 12,60
Nominal Absorbed Power kW 1,37 1,90 3,11 4,17
EER 2,88 2,91 3,44 3,02
ESEER 4,69 4,54 5,96 5,88
Pump - Available Pressure kPa 100 55 92 90
Noise Level dB(A) 60 62 63 63
Noise Pressure* dB(A) 38 40 41 41
APPLICATION USING HEATING PANELS
Nominal Thermal Power
A7 W35
kW 6,48 9,87 14,10 17,00
Nominal Absorbed Power kW 1,47 2,15 3,14 4,05
COP 4,40 4,58 4,49 4,20
Nominal Thermal Power
A-7 W35
kW 4,00 6,50 9,50 11,00
Nominal Absorbed Power kW 1,47 2,38 3,46 4,06
COP 2,72 2,73 2,74 2,71
Nominal Cooling Power
A35 W18
kW 5,30 7,30 14,20 16,20
Nominal Absorbed Power kW 1,32 2,02 3,05 3,98
EER 4,02 3,61 4,66 4,07
APPLICATION USING LOW-TEMPERATURE RADIATORS
Nominal Thermal Power
A7 W55
kW 5,90 9,30 12,50 14,00
Nominal Absorbed Power kW 2,31 3,26 4,38 5,01
COP 2,55 2,85 2,85 2,80
Nominal Thermal Power
A-7 W55
kW 3,10 5,40 8,70 9,20
Nominal Absorbed Power kW 1,83 3,11 4,75 4,96
COP 1,70 1,73 1,83 1,85
Electricity Supply 230V~ 50Hz
Maximum Power Absorbed kW 2,5 3,5 5,5 5,6
Maximum Current A11,2 18,3 25,3 25,3
Compressor Type Twin Rotary
R410 Refrigerant kg 1,05 1,60 2,99 2,99
Water Connections Ø3/4” 1” 1” 1/4 1” 1/4
Maximum Water Pressure bar 3,0 3,0 3,0 3,0
Width mm 850 874 1024 1024
Height mm 675 882 1420 1420
Depth mm 315 345 356 356
Weight kg 52 77 118 118
Data in relation to the following conditions:
A35 W18 Air: 35 °C - Water: 18/23 °C
A35 W7 Air: 35 °C - Water: 7/12 °C
A7 W35 Air: 7(6) °C - Water 30/35 °C
A7 W35 Air: -7(-8) °C - Water G/35 °C. G=water range the same as in condition A7 W35
A7 W35 Air: 7(6) °C - Water 40/45 °C
A7 W35 Air: -7(-8) °C - Water G/45 °C. G=water range the same as in condition A7 W35
A7 W35 Air: 7(6) °C - Water 47/55 °C
A7 W35 Air: 7(-8) °C - Water G/55 °C. G=water range the same as in condition A7 W35
(*) In an open area (Q = 2) 5 metres from the unit.
(European Seasonal Energy Efficiency Rating)
Performance in accordance with EN 14511:2011.
3. TECHNICAL SPECIFICATIONS

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DESCTIPTION OF COMPONENTS GBGB 3. TECHNICAL SPECIFICATIONS
3.2 Operating range
0
15 20 25 30 35 40 45
5
10
15
20
25
10
65
60
55
50
45
40
35
30
25
20
15
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45
Outbound water temperature(°C)
External air temperature (°C)
External air temperature (°C)
HEATING
COOLING
Outbound water temperature(°C)
0
15 20 25 30 35 40 45
5
10
15
20
25
10
65
60
55
50
45
40
35
30
25
20
15
-25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45
Outbound water temperature(°C)
External air temperature (°C)
External air temperature (°C)
HEATING
COOLING
Outbound water temperature(°C)
3.1 Capacity and head helpful
Model EH0614DC
Model EH1014DC
Model EH1314DC - EH1614DC
Minimum flow

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4. MOVEMENT AND TRANSPORT
99803194R.A-06.2014
0724781200001
Model: EH0614DC-F
Identification code
Power supply: 230 V~ 50 Hz
Fontanafredda (PN) - ITALY
1
99803194R.A - 06.2014
0724781200001
Model: EH0614DC
Identification code
Power supply: 230 V~ 50 Hz
Fontanafredda (PN) - ITALY
1
CLIMA
CLIMA
Packing dimensions 1120x470x1610 Gross wight 131 Kg
Key to symbols on packaging:
Keep in an upright position
Fragile
Handle with care
Do not expose to humidity
Do not use straps or harnesses for move-
ment
Centre of gravity is on the right hand side
Do not crush
GOOD (indicates the quantity
and correct method for
overlapping)
99803194R.A -06.2014
0724781200001
Model: EH0614DC-F
Identification code
Power supply: 230 V~ 50 Hz
Fontanafredda (PN) - ITALY
1
99803194 R.A - 06.2014
0724781200001
Model: EH0614DC
Identification code
Power supply: 230 V~ 50 Hz
Fontanafredda (PN) - ITALY
1
CLIMA
CLIMA
Packing dimensions 1120x470x1610 Gross wight 131 Kg
Packing label (es. EH0614DC)
Model Model EH0614DC EH1014DC EH1314DC EH1614DC
Packing
dimensions
Dimension
packing 980 x 425 x 840 1040 x 550 x 1050 1120 x 470 x 1610 1120 x 470 x 1610
Gross weight Gross weight 62 Kg 90 Kg 131 Kg 131 Kg
1Stacking 1
= 1 unit
1
= 1 unit = 0 unit = 0 unit
4.1 Identification packaging

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DESCTIPTION OF COMPONENTS GBGB 4. MOVEMENT AND TRANSPORT
The units must be moved using a forklift truck.
If knives or cutters are used in the unwrapping process, please be careful
not to damage the casing around the unit.
After all packaging has been removed, check that the unit is in good
condition.
If in doubt, do not use the device and contact an authorised technician.
Warning!
Check that the units have not been damaged during transport.
In the case of a claim, contact the transport company to obtain a timely
declaration in relation to the damage and liability.
Before disposing of the packaging ensure that all accessories have been
removed.
4.2 Movement units
WARNING
Do not use the handles to lift the unit
4.2 Removing the unit
WARNING

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5. MOVEMENT AND TRANSPORT
Do not install the unit in an area prone to high
winds.
Choose a location which favours air circulation
and facilitates the discharge of condensate.
Be very wary of snow, including snow falling
from the roof, this could obstruct air circulation.
Choose a location where the noise and the air jet
does not cause damage or discomfort to persons,
animals or plants.
Ensure that you respect the "minimum functional
space".
If at all possible avoid direct contact with sun-
light, especially in the afternoon. If this is not
possible, install a suitable cover which does not
obstruct air circulation.
WARNING
5.1 Installation Warnings
The installation and maintenance of heat pumps must only be per-
formed by qualified technicians and authorised companies.
- Installation must only be carried out by qualified and authorised techni-
cians.
- Do not attempt to install the device on your own initiative.
- For repairs contact the Technical Support Team. Electrical repairs must be
carried out by qualified electricians.
- Unsatisfactory work may result in serious damage to the user.
- The list of technical support centres is available on the following website:
www.emmeti.com.
Correct installation guarantees efficient use.
Therefore, we ask you to carefully abide by the instructions in relation
to installation, connections and testing as they are documented in this
manual.
WARNING
Danger of cuts : use suitable gloves.
Please carry out all works in accordance with the norms governing
overground works.
5.2 Choice of Installation Location
• Install the unit in a stable location which can support the weight
and minimise the transmission of vibrations.
• Install the unit in a location where it will not be inclined more than 5°.
• Install the unit in a location where it is possible to protect it from grease
and rain.
• Do not install near to sources of heat, steam or inflammable gas.
• In the case of leakage, the coolant could form toxic gasses if it comes
into direct contact with open flames.
• Child-proof the area around the area, thus preventing access.

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DESCTIPTION OF COMPONENTS GBGB 5. INSTALLATION
3/4" Delivery Connection
327
57
388 54
30015.342
825 73
65916
580==
43
1418
205 205590
241000
657 120
6770
29
1313 330
356
881.5
110
180
6090
330
850
155 540 155
357
Model EH0614DC
Model EH1014DC
Model EH1314DC and EH1614DC
3/4" Return Connection
1" Delivery Connection
1" Return Connection
1" 1/4 Delivery Connection
1" 1/4 Return Connection
5.3 Unit Dimensions

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DESCTIPTION OF COMPONENTS GBGB 5. INSTALLATION
Fig. A
5.4 Minimum Functional Space
Model: EH1614DC - EH1314DC
mm003>
Over 600 mm
>100 mm
Over 100 mm
> 600 mm

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5. INSTALLATION
ATTENTION
Can be observe the regulations in force at the place of installation of the
unit in respect of:
- The design, installation, testing and maintenance of the system (eg. UNI
EN 806 and UNI 9182: 2014),
- The treatment of the water used to feed the plant (eg. UNI 8065: 1989),
- The quality of water intended for human consumption (eg. Legislative
Decree February 2, 2011, n. 31).
Do not use corrosive water, containing deposits, debris chlorine or demi-
neralized water.
To avoid corrosion of the heat exchanger of the heat pump, the water pre-
loading must respect the limits of the table alongside described.
5.6 Water Connections
Example schema for systems with heating system
floor. With cooling fan.
pH 7.5 ÷ 9.0
SO4-- < 70 ppm
HCO3-/SO4-- > 1.0 ppm
total hardness 4.0 ÷ 8.5 dH
CI- < 50 ppm
PO43- < 2.0 ppm
NH3 < 0.5 ppm
Fe+++ < 0.2 ppm
Mn++ < 0.05 ppm
CO2< 5 ppm
H2S < 50 ppb
Temperaturae < 65 °C
Oxygen content < 0.1 ppm
Alkalinity (HCO3) 70 ÷ 300 ppm
Electrical conductivity 10 ÷ 500 μS/cm
Nitrato (NO3) < 100 ppm
1Circulation Pump MIRAI-SMI
2Fan Coil SILENCE
4 Radiant system
5 Three-way diverter valve Check Valve
6“Euro” DHW Accumulator
7Electrothermal head CONTROL T
8Overpressure valve
9Air vent valve
System Drainage/Filler Valve
ETW 50 buffer tank
Kit expansion vessel
Filter
 Shutoff Valve
Non-return valve
Flexible anti-vibration
Flowmeter system
Do not use the heat pump to treat water used for industrial purposes, water from swimming pools or domestic water.
In all of the above cases use an intermediate inter cooler.
• The minimum water level is 50 litres.
• You must install an adequately sized expansion tank, (the unit is not equipped with one), to ensure a maximum level of pressure, lower than 3 bar in accord-
ance with the maximum temperature in heating mode.
In case you have not reasonably certain water quality within the table at
left or you have doubts about the presence of different materials that could
cause over time a gradual corrosion of the heat exchanger, it is always good
practice to insert an intermediate heat exchanger for inspection and in suita-
ble material to withstand these components.

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5. INSTALLATION
Concentration of Anti-Freeze in the System
Correction Factors
% of inhibited propylene glycol 10% 20% 30% 40%
Freezing Temperature* -4 °C -9 °C -15 °C -23 °C
Capacity 0,996 0,991 0,983 0,974
Absorbed Power 0,990 0,978 0,964 1,008
Loss of Charge 1,003 1,010 1,020 1,033
Note: (*) Note: the temperature values are indicative. Always refer to the temperatures listed for the specific product.
Pipe Isolation
The entire hydraulic circuit, including the piping, must be isolated to prevent con-
densation during in cooling mode and also to prevent the reduction of the cooling
and heating capacities.
If the temperature of the outdoor water exceeds 30 °C and humidity is above 80%,
the thickness of the materials used must be at least 20 mm to avoid condensation
on the surface of the sealant.
Ensure that all pipes are isolated to prevent the water from freezing.
Filling
Before filling the unit with water please check the following:
• Water pressure before filling must be 1.5 bar.
• Ensure that you have a discharge outlet which is compatible with the pressure
adjustment valve and ensure that water does not come into contact with the
electrical components.
• Air discharge outlets must be positioned at the highest pints in the system. The
air pressure discharge outlets must be located in easily accessible areas, so that
they can be created with ease. An automatic air pressure valve is included with
the unit. Check that the air pressure valve is not too tight, this ensures that air
can be discharged into the water circuit.
• Check that the components installed in the plumbing are capable of sustaining
the water pressure.
• Do not use zinc plated components in the hydraulic circuit. Excessive corrosion of
these components could ensue.
Water filling and air discharge into the hydraulic system
1) Connect the water supply to a discharge/filling valve.
2) Fill the hydraulic circuit with water until the gauge displays a 2.0 bar pressure
level.
3) Turn on the circulator to expel the air from the system.
When you press PUMP SW on the PCB display, the water pump begins to circu-
late the water.
Each digital segment on the right of the PCB screen will light up when the pump
is working.
The pump shuts down automatically after 10 minutes. If you were unable to
expel the air from the system, press PUMP SW again after it has stopped. If you
want to turn the pump off before automatic shut down, just press PUMP SW
again.
Note
• During the filling operation, it might not be possible to expel all the air from
the system. The remaining air is removed via the automatic air pressure
discharge valves during the initial hours of service. It may be necessary to
top up the water after this.
• The water pressure indicated on the gauge varies according to the water
temperature, that is to say a higher temperature means a higher level of
pressure.
Moreover, water pressure must remain above 0.3 bar to prevent air entering
the circuit.
• The unit can discharge a little of the excess water via the pressure adjust-
ment valve.
Preventing the pump from seizing up
If after a long period of inactivity, the rotor shaft should seize up, you should
act as follows:
- Turn off the power
- Remove the front panel
- Unscrew the protection cap on the shaft at the back of the pump
- Insert a Phillips screwdriver in the grooving and turn the rotor shaft
- Replace the protection cap
- Replace the front panel
- Turn the power back on
PUMP SW
Water connections must be performed according to the diagram and the instruc-
tions supplied by the system designer and by respecting the water inlets and outlets
on the pump.
The hydraulic circuit must be created according to the following recommendations:
• It is advisable to install shut-off valves which allow you to isolate the
most important components in the system.
All valves (they can be spherical, globe or butterfly), must be measured in such a
way as to prevent leaks as much as possible when they are open.
• Drainage outlets must be located at the lowest points on the system.
• Air pressure release outlets must be located at the highest points on the system.
• All piping must be isolated and adequately supported.
• The presence of solid particles in the water obstructs the inter cooler. The inter
cooler inlet must be protected using an extractable wire filter. The filter must
have a mesh calibre of at least 10/cm2.
• After installation and each repair operation, it is necessary to clean the entire
system carefully, paying special attention to the filter.
• Is there an automatic frost protection, which provides:
- Activation of the circulating pump with outside temperature below 4 ° C
- Start the compressor with water temperature below 2 ° C.
To enable this protection move in On the dip switch No. 1, on the PDB DISPLAY.
• If the unit has been installed in areas prone to sub-zero temperatures,
where there is a risk that the electricity supply can be cut off from the
pump, you must mix the water with an adequate amount of inhibited
mono propylene glycol.
• In the case of a first time installation or circuit drainage, you must purge the enti-
re system. In order to ensure that the unit functions to the best of its capabilities,
always check that the liquid is clear, free from any visible impurities and that
water hardness is lower than 20° f after each cleaning operation.
Hydraulic Circuit Connection
The presence of air, humidity or dust in the circuit could cause problems. Always
keep the following in mind when connecting the hydraulic circuit:
• Only use clean piping.
• Cover the end of a pipe when inserting it through a wall, thus avoiding
dust and dirt.
• Use a good sealant to secure connections. Connections must be adequately
secured in order to sustain system pressures and temperatures.
Tightening Coupler
15 to 30 N.m. (150 a 350) kgf cm.
• The unit must only be used in a closed water system. The application in an open
water circuit can cause excessive corrosion of water pipes.
OFF ON
1 2 3 4

17
GBGB
5. INSTALLATION
By removing the cover of the electric panel, you can access the electri-
cal supply terminal board of the heat pump and and the PCB TERMINAL
BLOCK.
(N)(L)
Supply Cable
Terminal Board
Electric Cable Press
Electric Cable Press
Cable Tie Ring
Earthing Cable
Electric Cable Press
Electric Cable Press
Ensure that you that electricity supply line is protected by a differential
magneto thermal switch.
Use cables which contain contain wires with greater dimensions to those
listed in the table below.
Model Supply Cable (mm2)Capacity of differential magneto thermal switch
(A)
EH1614DC 6 32
EH1314DC 6 32
EH1014DC 4 20
EH0614DC 2,5 16
The cable must conform with IEC Norm: 60245 IEC57 (H05RN-F)
• I Connections must be carried out by qualified technicians in accord-
ance with the regulations governing the type of installation location
for the unit.
• Connection must follow an careful inspection of the compatibility of the
electricity supply line and characteristics of the unit.
• A bipolar, (differential) switch must be placed on the supply line, which
includes a 3 mm gap between the contacts in each pole, with minimum
threshold of 30 but.
10 mm 30 mm
Differential Switch /
Magneto thermal
Distribution
Panel
5.7 Electricity Connection
WARNING
Before performing any work on the unit, ensure that the electricity supply
has been turned off. Never touch electrical components immediately after
removing the power supply, wait at least 5 minutes.
Connect the Earthing Cable
The earthing cable must not be connected to the piping, the
gas supply, lightening rods or telephone lines; incorrect earth-
ing can cause electrical discharge and damage to the unit.
Fuse 10A
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Control
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Cool/Head
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
Low Temp.
Valve
Gray Y
Black G0
Red G
1 KOhm
Air Ext. S.
In W. S.
Out W. S.
CRONO-TH
Dehumidifier
3-Way Sanitary
Pump 2
Gas Boiler

18
GBGB
5. INSTALLATION
How to Connect the Wiring to the Terminal
Be very careful when performing wiring work.
When flaying the covering on a main wire, use an appropriate tool such
as a wire stripper.
(1) Use terminal crimp boots with isolating sleeves to perform the connec-
tion to the terminal board, as shown in the following illustration.
(2) Secure the crimp boots to the cables, using an appropriate tool, in
order to ensure that the cables do not slacken.
Screw with special washer
Screw with special washer
Terminal Crimp Boot
Cable
Terminal Crimp Boot
Terminal Board
Cable
(3) Use specific cables, connect them safely and secure them without
applying pressure to the terminals..
(4) Use the correct screwdriver to secure the screws on the terminal. Do
not use a damaged screwdriver, otherwise the heads of the screws
could become damaged and prevent tightening.
(5) Do not tighten the screws excessively, otherwise the screws could break.
Terminal Crimp Boot
Sleeve
10 mm
30 mm
Tightening Coupler
M3 Screw from 0.3 to 0.6 N.m (3 to 6 kg f.cm)
M4 Screw from 1.2 to 1.8 N.m (12 to 18 kg f.cm)
WARNING
• Faulty cabling could affect functionality as well as causing damage to
the PCB board.
• Tighten each screw sufficiently.
• Check that it is inserted correctly by pulling the cable slightly.
• The flaying on the connection cable must be at least 10 mm. If it is
shorter than this a faulty contact could ensue.
If it is longer there is a risk of short-circuit.
• Use terminal crimp boots and tighten the screws to the specified tighten-
ing coupler otherwise overheating may ensue, this could cause serious
damage to the inside of the unit.
• When connecting the supply cable, ensure that the electrical supply
phase corresponds to the terminal board phase.
WARNING
• The nominal voltage for this product is 230 V ~ 50 Hz.
• Before turning the unit on, check that the voltage value reads somewhere
between 207 V ~ and 253 V ~.
• In the case that the voltage is lower than this range and there is some
difficulty in starting the heat pump, contact your energy provider, so
that they can increase the voltage level.

19
GBGB
5. INSTALLATION
Connections on the internal PCB-Terminal Block
Fuse 10A
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Control
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Cool/Head
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
Low Temp.
Valve
Gray Y
Black G0
Red G
1 KOhm
Air Ext. S.
In W. S.
Out W. S.
CRONO-TH
Dehumidifier
3-Way Sanitary
Pump 2
Gas Boiler

20
GBGB
5. INSTALLATION
Fuse 10A
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Control
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
A
1
2
3
4
5
6
Temp. Water
Supply System
Outdoor
Temp.
Sanitary Tank
Water Sensor
IN
COM
12V
7
8
9
Dew Point
Sensor
Remote
On/Off
10
11
Night
Mode
12
Remote
Cool/Head
13
14
+
Set Point 2
-
Out Signal
0-10V
26
27
Power Supply
24V 3VA
C
D
E
Room
Thermostat
Elec. heat
Sanitary
Pump 1
L
K
J
F
Input
Pump1-2
Ext. Heat
Source
L
I
Out Pump 2
H
G
3W. V. Sanitary
Dehumidifier
-
+
G
12V
Sig.
GND
LAN
RS485
Low Temp.
Valve
Gray Y
Black G0
Red G
1 KOhm
Air Ext. S.
In W. S.
Out W. S.
CRONO-TH
Dehumidifier
3-Way Sanitary
Pump 2
Gas Boiler
Connections on the external PCB-Terminal Block