Mitsubishi Electric EHST20 Series User manual

Cylinder unit
EHST20 series
EHPT20 series
ERST20 series
Hydrobox
EHSC series EHSD series
EHPX series ERSC series
ERSD series
MODE D'EMPLOI
Pour garantir une utilisation sûre et appropriée, lisez attentivement le présent mode d'emploi avant d'utiliser
l’ECODAN hydrobox duo et l’ECODAN hydrobox.
OPERATION MANUAL
For safe and correct use, please read this operation manual thoroughly before operating the cylinder unit and
the hydrobox.
FOR USER
POUR LES UTILISATEURS
English (EN)
Français (FR)

1
EN
Contents
1. Safety Precautions ........................................... 2
2. Introduction....................................................... 3
3. Your Heating System........................................ 5
4. Customising Settings for Your Home............. 7
5. Service and Maintenance............................... 14
6. Serial number.................................................. 15
Abbreviations and glossary
No. Abbreviations/Word Description
1 Compensation curve mode Space heating incorporating outdoor ambient temperature compensation
2 COP Coefcient of Performance the efciency of the heat pump
3 Cooling mode Space cooling through fan-coils or underoor cooling
4 Cylinder unit Indoor unvented DHW tank and component plumbing parts
5 DHW mode Domestic hot water heating mode for showers, sinks, etc.
6 Flow temperature Temperature at which water is delivered to the primary circuit
7 Freeze stat. function Heating control routine to prevent water pipes freezing
8 FTC Flow temperature controller, the circuit board in charge of controlling the system
9 Heating mode Space heating through radiators or Underoor heating
10 Hydrobox Indoor unit housing the component plumbing parts (NO DHW tank)
11 Legionella Bacteria potentially found in plumbing, showers and water tanks that may cause Legionnaires disease
12 LP mode Legionella prevention mode – a function on systems with water tanks to prevent the growth of legionella bacterium
13 Packaged model Plate heat exchanger (Refrigerant - Water) in the outdoor heat pump unit
14 PRV Pressure relief valve
15 Return temperature Temperature at which water is delivered from the primary circuit
16 Split model Plate heat exchanger (Refrigerant - Water) in the indoor unit
17 TRV Thermostatic radiator valve – a valve on the entrance or exit of the radiator panel to control the heat output
■ Heat pumps certication
The mark “NF heat pumps” is an independent certication program proving that heat pumps’ performances and production quality of the factory are
conformed with the certication reference NF-414. The combinations of indoor units and outdoor units, and their applications allowed to use the NF PAC
mark can be consulted on the website www.marque-nf.com

2
Safety Precautions
1
EN
Disposal of the Unit
Note: This symbol mark is for EU countries only.
This symbol mark is according to the directive 2012/19/EU
Article 14 Information for users and Annex IX, and/or to the
directive 2006/66/EC Article 20 Information for end-users and
Annex II.
Your Mitsubishi Electric heating system products have been man-
ufactured with high quality materials and components which can
be recycled and/or reused. The symbol in Figure 1.1 means that
electrical and electronic equipment, batteries and accumulators
at the end of their life, should be disposed of separately from your
household waste.
If a chemical symbol is printed beneath the symbol (Figure 1.1),
this chemical symbol means that the battery or accumulator con-
tains a heavy metal at a certain concentration. This is indicated as
follows;
Hg: mercury (0.0005%), Cd: cadmium (0.002%), Pb: lead (0.004%)
In the European Union there are separate collection systems for used electrical
and electronic products, batteries and accumulators.
Please dispose of this equipment, batteries and accumulators correctly at your lo-
cal community waste collection/recycling centre.
Contact your local Mitsubishi Electric dealer for country-specic details on
disposal.
Please, help us to conserve the environment we live in.
WARNING
• The unit should NOT be installed or serviced by the user. If installed incorrectly water leakage, electric shock and re may result.
• NEVER block discharges from emergency valves.
• Do not operate the unit without emergency valves and thermostatic cut-outs being operational. If in doubt contact your installer.
• Do not stand on or lean on unit.
• Do not place objects on top or below the unit and observe service space requirements when placing objects next to the unit.
• Do not touch the unit or controller with wet hands as electric shock may result.
• Do not remove the panels of the unit or try to force objects inside the unit’s casing.
• Do not touch protruding pipework as it may be very hot and cause burns to the body.
• Should the unit start vibrating or making abnormal noises stop operation, isolate from the power supply and contact the installer.
• Should the unit start to produce any burning smells stop operation, isolate from the power supply and contact the installer.
• Should water be visibly being discharged through the tundish stop operation, isolate from the power supply and contact the installer.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• In the case of a refrigeration leak, stop the operation of the unit, thoroughly ventilate the room and contact the installer.
• If power supply cable is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.
• Do not place containers with liquids on top of the unit. If they leak or spill the unit may be damaged and re could occur.
• When installing, relocating, or servicing the cylinder unit and the hydrobox, use only the specied refrigerant (R410A) to charge the refrigerant lines. Do
not mix it with any other refrigerant and do not allow air to remain in the lines. If air is mixed with the refrigerant, then it can be the cause of abnormal
high pressure in the refrigerant line, and may result in an explosion and other hazards.
The use of any refrigerant other than that specied for the system will cause mechanical failure or system malfunction or unit breakdown. In the worst
case, this could lead to a serious impediment to securing product safety.
• In heating mode, to avoid the heat emitters being damaged by excessively hot water, set the target ow temperature to a minimum of 2ºC below the
maximum allowable temperature of all the heat emitters. For Zone2, set the target ow temperature to a minimum of 5ºC below the maximum allowable
ow temperature of all the heat emitters in Zone2 circuit.
• This appliance is primarily intended for domestic use. For commercial applications this appliance is intended to be used by expert or trained users in
shops, in light industry and on farms, or for commercial use by lay persons.
CAUTION
• Do not use sharp objects to press the buttons of the main remote controller as this will cause damage to the buttons.
• If power to unit is to be turned off for a long time, the water should be drained.
• Do not place a container etc. lled with water on the top panel.
<Figure 1.1>
• Follow the instructions provided in this manual and local regulations when using this unit.
► Before operating this unit it is important to read the safety precautions.
► The following safety points are provided to prevent injury to yourself and damage to the unit please adhere to them.
Used in this manual
WARNING:
Precautions listed under this title should be observed to prevent
injury or death to the user.
CAUTION:
Precautions listed under this title should be observed to prevent
damage to the unit.

2 kW
3 kW
1 kW
4. Evaporator
(Outdoor unit air heat exchanger)
Low temperature renewable heat
energy taken from the environment
Electrical energy
input
Heat energy output
2. Condenser
(Plate heat exchanger)
1. Compressor
3. Expansion valve
3
Introduction
2
EN
Schematic of package cylinder system
Overview of the System
The Mitsubishi Electric Air to Water (ATW) heat pump system consists of the fol-
lowing components; outdoor heat pump unit and indoor cylinder unit or hydrobox
incorporating main remote controller.
How the Heat Pump Works
Space heating and DHW
Heat pumps take electric energy and low grade heat energy from the outdoor air
to heat refrigerant which in turn heats water for domestic use and space heating.
The efciency of a heat pump is known as the Coefcient of Performance or COP
this is the ratio of heat delivered to power consumed.
The operation of a heat pump is similar to a refrigerator in reverse. This process
is known as the vapour-compression cycle and the following is a more detailed
explanation.
The rst phase begins with the refrigerant being cold and low pressure.
1. The refrigerant within the circuit is compressed as it passes through the com-
pressor. It becomes a hot highly pressurised gas. The temperature also rises
typically to 60°C.
2. The hot refrigerant gas is then condensed as it passes across one side of a
plate heat exchanger. Heat from the refrigerant gas is transferred to the cooler
side (water side) of the heat exchanger. As the temperature of the refrigerant
decreases its state changes from a gas to a liquid.
3. Now as a cold liquid it still has a high pressure. To reduce the pressure the liq-
uid passes through an expansion valve. The pressure drops but the refrigerant
remains a cold liquid.
4. The nal stage of the cycle is when the refrigerant passes into the evaporator
and evaporates. It is at this point when some of the free heat energy in the out-
side air is absorbed by the refrigerant.
It is only the refrigerant that passes through this cycle; the water is heated as it
travels through the plate heat exchanger. The heat energy from the refrigerant
passes through the plate heat exchanger to the cooler water which increases in
temperature. This heated water enters the primary circuit and is circulated and
used to serve the space heating system and indirectly heat the contents of the
DHW tank (if present).
The purpose of this user manual is to inform users how their air source heat
pump heating system works, how to run the system at its most efcient and how
to change settings on the main remote controller.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction con-
cerning the use of the appliance by a person responsible for their safety.
Children should be supervised to ensure they do not play with the appli-
ance.
This user manual should be kept with the unit or in an accessible place for
future reference.

20°C
4
Introduction
2
EN
Room temp. sensor
Return temp. sensor
Flow temp. sensor
Ambient
temp.
sensor
FTC
Economical Best Practice
Air source heat pumps can provide both hot water (providing a suitable DHW tank
is used) and space heating all year. The system is different to a conventional fossil
fuel heating and hot water system. The efciency of a heat pump is shown by its
coefcient of performance as explained in the introduction. The following points
should be noted to achieve the most efcient and economical operation of your
heating system.
Important points about heat pump systems
• Domestic hot water and legionella functions are only available on cylinder units
or hydroboxes plumbed to an appropriate storage DHW tank.
• In normal operation simultaneous DHW and space heating is unadvisable.
However during periods of extremely low outdoor ambient temperature, the im-
mersion heater (if present) can be used for DHW whilst the heat pump contin-
ues to provide space heating. Please be aware that the immersion heater, used
alone, is not an efcient method to heat the whole DHW tank. Therefore it
should only be used as a back up in normal operation.
• The hot water produced by the heat pump is typically at a lower temperature
than a fossil fuel boiler.
Implications
• If the heat pump is being used for DHW the time at which tank heat up occurs
should be scheduled using the SCHEDULE function (see page 12). Ideally
this should be during the night time when little space heating is required and
economy electricity tariffs can be taken advantage of.
• In most situations space heating is best performed using the room tempera-
ture mode. This enables the heat pump to analyse current room temperature
and react to changes in a controlled manner utilising the specialised Mitsubi-
shi Electric controls.
• Using the SCHEDULE and HOLIDAY functions prevent unnecessary Space
or DHW heating when the property is known to be unoccupied for instance
during the working day.
• Due to lower ow temperatures, heat pump heating systems should be used
with large surface area radiators or under-oor heating. This will provide a
steady heat to the room whilst improving efciency and so lowering running
costs of the system as the heat pump does not have to produce water at very
high ow temperatures.
Overview of Controls
Built into the cylinder unit and hydrobox is the Flow Temperature Controller(FTC).
This device controls the function of both the outdoor heat pump unit and the cyl-
inder unit or hydrobox. The advanced technology means that by using an FTC
controlled heat pump you can not only make savings compared to traditional fos-
sil fuel type heating systems but also compared to many other heat pumps on the
market.
As explained in the earlier section, ‘How the Heat Pump Works,’ heat pumps are
most efficient when providing low flow temperature water. The FTC advanced
technology enables the room temperature to be kept at the desired level whilst
utilising the lowest possible ow temperature from the heat pump.
In room temp. (Auto adaptation) mode the controller uses temperature sensors
around the heating system to monitor space and ow temperatures. This data
is regularly updated and compared to previous data by the controller to predict
changes in room temperature and adjust the temperature of water owing to the
space heating circuit accordingly. By monitoring not only the outdoor ambient, but
the room and heating circuit water temperatures, the heating is more consistent
and sudden spikes in required heat output are reduced. This results in a lower
overall ow temperature being required.

5
Your Heating System
3
EN
Product Specication (1/2)
*1 The environment must be frost-free. *2 Cooling mode is not available in low outdoor temperature. *3 For the model without both booster heater and immersion heater, the maximum allowable hot water temperature is [Maximum outlet water of outdoor unit - 3°C].
For the maximum outlet water of outdoor unit, refer to outdoor unit data book.
*4 Tested under BS7206 conditions. *5 Do not t immersion heaters without thermal cut-out.
Cylinder unit
Model name EHST20C-
VM2C
EHST20C-
VM6C
EHST20C-
YM9C
EHST20C-
TM9C
EHST20C-
VM2EC
EHST20C-
VM6EC
EHST20C-
YM9EC
EHST20C-
MEC
EHST20D-
VM2C(2)
EHST20D-
MEC
EHST20D-
MHC
EHST20D-
VM2EC
EHST20D-
YM9C
Modes Heating ONLY Nominal domestic hot water volume 200L Overall unit dimensions 1600 × 595 × 680 mm (Height × Width × Depth) Weight (empty) 110 kg 111 kg 112 kg 112 kg 104 kg 105 kg 106 kg 103 kg 103 kg 96 kg 103 kg 97 kg 105 kg
Weight (full) 320 kg 321 kg 322 kg 322 kg 314 kg 315 kg 316 kg 313 kg 312 kg 305 kg 312 kg 306 kg 314 kg
Plate heat exchanger
Target temperature range
Flow temperature Heating 25 - 60°C
Cooling —
Room tempera- ture
Heating 10 - 30 °C Cooling —
Guaranteed operating range
Ambient *1 0 - 35°C ( 80 %RH)
Outdoor temperature
Heating See outdoor unit spec table. Cooling —
DHW tank performance
Maximum allowable hot water temperature 70°C *3 70°C *3 70°C
Time to raise DHW tank temp. 15 - 65 °C *4 22.75 min Time to reheat 70% of DHW tank to 65 °C *4 17.17 min
Unvented expansion vessel (Primary heating)
Nominal value 12 L — 12 L — 12 L — 12 L
Charge pressure 0.1 MPa (1 bar) —
0.1 MPa (1 bar)
—
0.1 MPa (1 bar)
—
0.1 MPa (1 bar)
Electrical data
Control board Power supply
(Phase, voltage, frequency) ~/N, 230 V, 50 Hz
Booster heater
Power supply (Phase, voltage, frequency)
~/N, 230 V,
50 Hz
~/N, 230 V,
50 Hz
3~, 400 V,
50 Hz
3~, 230 V,
50 Hz
~/N, 230 V,
50 Hz
~/N, 230 V,
50 Hz
3~, 400 V,
50 Hz —~/N, 230 V,
50 Hz — — ~/N, 230 V,
50 Hz
3~, 400 V,
50 Hz
Capacity 2kW 2kW+4kW 3kW+6kW 3kW+6kW 2kW 2kW+4kW 3kW+6kW — 2kW — — 2kW 3kW+6kW
Current 9 A 26 A 13A 23A 9 A 26 A 13A — 9 A — — 9 A 13A
Immersion heater *5
Power supply (Phase, voltage, frequency)
—~/N, 230 V,
50 Hz —
Capacity — 3kW — Current — 13A —
Cylinder unit
Model name ERST20C-
MEC
ERST20C-
VM2C
ERST20D-
MEC
ERST20D-
VM2C(2)
EHPT20X-
VM2C(2)
EHPT20X-
VM6C
EHPT20X-
YM9C
EHPT20X-
TM9C
EHPT20X-
MHCW
EHST20C-
MHCW
EHST20D-
MHCW
Modes Heating and Cooling Heating ONLY Nominal domestic hot water volume 200L Overall unit dimensions 1600 × 595 × 680 mm (Height × Width × Depth) Weight (empty) 103 kg 110 kg 96 kg 103 kg 98 kg 99 kg 100 kg 100 kg 98 kg 110 kg 103 kg
Weight (full) 313 kg 320 kg 305 kg 312 kg 307 kg 308 kg 309 kg 309 kg 307 kg 320 kg 312 kg
Plate heat exchanger —————
Target temperature range
Flow temperature Heating 25 - 60°C
Cooling 5 - 25°C —
Room temperature
Heating 10 - 30 °C Cooling NOT available —
Guaranteed operating range
Ambient *1 0 - 35°C ( 80 %RH)
Outdoor temperature
Heating See outdoor unit spec table. Cooling See outdoor unit spec table. (min. 10°C) *2 —
DHW tank performance
Maximum allowable hot water temperature *3 70°C *3 70°C
Time to raise DHW tank temp. 15 - 65 °C *4 22.75 min Time to reheat 70% of DHW tank to 65 °C *4 17.17 min
Unvented expansion vessel (Primary heating)
Nominal value — 12 L — 12 L Charge pressure — 0.1 MPa (1 bar) — 0.1 MPa (1 bar)
Electrical data
Control board Power supply
(Phase, voltage, frequency)
~/N, 230 V, 50 Hz
Booster heater
Power supply
(Phase, voltage, frequency)
—~/N, 230 V,
50 Hz —~/N, 230 V,
50 Hz
~/N, 230 V,
50 Hz
~/N, 230 V,
50 Hz
3~, 400 V,
50 Hz
3~, 230 V,
50 Hz ———
Capacity
—
2kW
—
2kW 2kW 2kW+4kW 3kW+6kW 3kW+6kW —
— —
Current
—
9 A
—
9 A 9 A 26 A 13A 23A —
— —
Immersion heater *5
Power supply
(Phase, voltage, frequency)
—
~/N, 230 V,
50 Hz
Capacity
—
3kW
Current
—
13A

6
Your Heating System
3
EN
Hydrobox
Model name EHSD-
MEC
EHSD-
MC
EHSD-
VM2C
EHSD-
YM9C
EHSC-
MEC
EHSC-
VM2C
EHSC-
VM2EC
EHSC-
VM6C
EHSC-
VM6EC
EHSC-
YM9C
EHSC-
YM9EC
EHSC-
TM9C
ERSD-
VM2C
ERSC-
MEC
ERSC-
VM2C
EHPX-
VM2C
EHPX-
VM6C
EHPX-
YM9C
Modes Heating ONLY Heating and Cooling
Heating ONLY
Overall unit dimensions 800×530×360 mm (Height×Width×Depth) Weight (empty) 38 kg 43 kg 44 kg 45 kg 42 kg 48 kg 43 kg 49 kg 44 kg 49 kg 44 kg 49 kg 45 kg 43 kg 49 kg 37 kg 38 kg 38 kg
Weight (full) 44 kg 49 kg 50 kg 51 kg 49 kg 55 kg 50 kg 56 kg 51 kg 56 kg 51 kg 56 kg 51 kg 50 kg 56 kg 42 kg 43 kg 43 kg
Plate heat exchanger ———
Target temperature range
Flow temperature
Heating 25 - 60°C Cooling — 5 - 25°C —
Room temperature
Heating 10 - 30°C Cooling — NOT available —
Guaranteed operating range
Ambient *1 0 - 35°C ( 80%RH) Outdoor temperature
Heating See outdoor unit spec table. Cooling — See outdoor unit spec table
(min. 10°C).*2 —
Unvented expansion vessel (Primary heating)
Nominal volume — 10 L — 10 L — 10 L — 10 L — 10 L — 10 L
Charge pressure — 0.1 MPa
(1 bar) —0.1 MPa
(1 bar) —0.1 MPa
(1 bar) —0.1 MPa
(1 bar) —0.1 MPa
(1 bar) —0.1 MPa
(1 bar)
Electrical data
Control board
Power supply (Phase, voltage, frequency)
~/N, 230V, 50 Hz
Booster heater
Power supply (Phase, voltage, frequency)
— —
~/N, 230V,
50Hz
3~, 400V,
50Hz —
~/N, 230V,
50Hz
~/N, 230V,
50Hz
~/N, 230V,
50Hz
~/N, 230V,
50Hz
3~, 400V,
50Hz
3~, 400V,
50Hz
3~, 230V,
50Hz
~/N, 230V,
50Hz
—
~/N, 230V,
50Hz
~/N, 230V,
50Hz
~/N, 230V,
50Hz
3~, 400V,
50Hz
Capacity — — 2kW 3kW +
6kW — 2kW 2kW 2kW +
4kW
2kW +
4kW
3kW +
6kW
3kW +
6kW
3kW +
6kW 2kW — 2kW 2kW 2kW +
4kW
3kW +
6kW
Current — — 9A 13A — 9A 9A 26A 26A 13A 13A 23A 9A — 9A 9A 26A 13A
*1 The environment must be frost-free. *2 Cooling mode is not available in low outdoor temperature.
Product Specication (2/2)

F1 F2 F3 F4
7
Customising Settings for Your Home
4
EN
To change the settings of your heating/cooling system please use the main re-
mote controller located on the front panel of the cylinder unit or hydrobox. The
following is a guide to viewing the main settings. Should you require more infor-
mation please contact your installer or local Mitsubishi Electric dealer.
Cooling mode is available for ERS series only. However,
Cooling mode is not avail-
able when the indoor unit is connected to PUHZ-FRP.
Main remote controller
BC D
E
A
12 11 1 32
10
9
4
765
15 14
13
8
<Main remote controller parts>
Letter Name Function
A Screen Screen in which all information is displayed.
B Menu Access to system settings for initial set up and
modications.
C Back Return to previous menu.
DConrm Used to select or save. (Enter key)
E Power/Holiday If system is switched off pressing once will turn
system on. Pressing again when system is
switched on will enable Holiday Mode. Holding the
button down for 3 secs will turn the system off. (*1)
F1-4 Function keys Used to scroll through menu and adjust settings.
Function is determined by the menu screen visible
on screen A.
*1
When the system is switched off or the power supply is disconnected, the
cylinder unit protection functions (e.g. freeze stat. function) will NOT oper-
ate. Please beware that without these safety functions enabled the indoor
unit may potentially become exposed to damage.
<Main screen icons>
Icon Description
1 Legionella
prevention
When this icon is displayed ‘Legionella prevention
mode’ is active.
2 Heat pump ‘Heat pump’ is running.
Defrosting
Emergency heating
3 Electric heater When this icon is displayed the ‘Electric heaters’
(booster or immersion heater) are in use.
4 Target
temperature
Target ow temperature
Target room temperature
Compensation curve
5 OPTION Pressing the function button below this icon will dis-
play the option screen.
6 + Increase desired temperature.
7 - Decrease desired temperature.
8 Z1 Z2 Pressing the function button below this icon switch-
es between Zone1 and Zone2.
Information Pressing the function button below this icon displays
the information screen.
9 Space heating
(cooling) mode
Heating mode
Zone1 or Zone2
Cooling mode
Zone1 or Zone2
10 DHW mode Normal or ECO mode
11 Holiday mode
When this icon is displayed ‘Holiday mode’ activated.
12 Timer
Prohibited
Server control
Stand-by
Stand-by (*2)
Stop
Operating
13 Current
temperature
Current room temperature
Current water temperature of DHW tank
14 The Menu button is locked or the switching of the
operation modes between DHW and Heating opera-
tions are disabled in the Option screen. (*3)
15
SD memory card (NOT for the user) is inserted.
*2 This unit is in Stand-by whilst other indoor unit(s) is in operation by
priority.
*3 To lock or unlock the Menu, press the BACK and CONFIRM keys
simultaneously for 3 seconds.
Main screen

8
Customising Settings for Your Home
4
EN
Icon Description
Hot water (DHW)
Heating/Cooling
Schedule timer
Holiday mode
Initial settings
Service
Home screen
Option screen
Main settings menu screen
General Operation
In general operation the screen displayed on the main remote controller will be
shown as in the gure on the right.
This screen shows the target temperature, space heating mode, DHW mode (if
DHW tank is present in system), any additional heat sources being used, holiday
mode, and the date and time.
You should use the function buttons to access more information. When this
screen is displayed pressing F1 will display the current status and pressing F4
will take the user to the option menu screen.
<Option screen>
This screen shows the main operating modes of the system.
Use function buttons to switch between Operating (►), Prohibited ( ) and Timer
() for DHW and space heating/cooling, or detailed information on energy or
capacity.
The option screen allows quick setting of the following;
• Forced DHW (if DHW tank present) — to turn ON/OFF press F1
• DHW operating mode (if DHW tank present) — to change mode press F2
• Space heating/cooling operating mode — to change mode press F3
• Energy monitor
Following accumulated energy values are displayed.
: Consumed electrical energy in total (month-to-date)
: Delivered heat energy in total (month-to-date)
To monitor the energy values in each operation mode for [month-to-date/ last
month/ the month before last/ year-to-date/ last year], press F4 to access to
the Energy monitor menu.
Note:
If a certain accuracy is required for the monitoring, the method to display
captured data from external energy meter(s) should be set up. Contact your
installer for further details.
Main Settings Menu
To access the main settings menu press button B ‘MENU’
The following menus will be displayed;
• DHW (Cylinder unit or hydrobox plus locally supplied DHW tank)
• Heating/Cooling
• Schedule timer
• Holiday mode
• Initial settings
• Service (Password protected)
Initial Settings
1. From the main settings menu use F2 and F3 buttons to highlight ‘Initial set-
tings’ icon and select by pressing CONFIRM.
2. Use F1 and F2 buttons to scroll through the menu list. When the required title
is highlighted then press CONFIRM to edit.
3. Use the relevant function buttons to edit each initial setting then press CON-
FIRM to save the setting.
Initial settings that can be edited are
●Date/Time *Be sure to set it to the local standard time.
●Language
●Summer time
●Temp. display
●Contact number
●Time display
●°C/°F
●Room sensor settings
To return to the main settings menu press the BACK button.

9
Customising Settings for Your Home
4
EN
<Room sensor settings>
For room sensor settings it is important to choose the correct room sensor de-
pending on the heating mode the system will operate in.
1. From the Initial settings menu select Room sensor settings.
Time/Zone schedule setting screen
2. When 2-zone temperature control is active and wireless remote controllers are
available, from Room RC zone select screen, select zone No. to assign to
each remote controller.
3. From Sensor setting screen, select a room sensor to be used for monitoring
the room temperature from Zone1 and Zone2 separately.
Control option
("Remote Controller Options"
(Installation manual))
Corresponding initial settings room sensor
Zone1 Zone2
A Room RC1-8 (one each
for Zone1 and Zone2)
*
B TH1 *
C Main remote controller *
D * *
* Not specied ( if a eld-supplied room thermostat is used)
Room RC1-8 (one each for Zone1 and Zone2) (if a wireless remote controller
is used as a room thermostat)
4. From Sensor setting screen, select Time/Zone to make it possible to use differ-
ent room sensors according to the time schedule set in the Select Time/Zone
menu. The room sensors can be switched up to 4 times within 24 hours.

10
Customising Settings for Your Home
4
EN
DHW tank temp.
DHW max.
temp.
DHW max.
temp. drop Start
DHW max.
operation time
DHW mode
restriction DHW mode
Time
Stop
Stop Restart
DHW max.
temp.
DHW max.
temp. drop
DHW tank temp.
Stop
Start
Restart
Time
DHW mode DHW mode
Domestic Hot Water (DHW)/Legionella Prevention
The domestic hot water and legionella prevention menus control the operation of
DHW tank heat ups.
<DHW mode settings>
1. Highlight the hot water icon and press CONFIRM.
2. Use button F1 to switch between Normal and ECO heating modes.
3. To edit the mode, press down the MENU button for 3 seconds, then select “hot
water”.
4. Press F2 key to display the HOTWATER (DHW) SETTING menu.
5. Use F2 and F3 keys to scroll through the menu selecting each component in
turn by pressing CONFIRM. See the table below for description of each setting.
6. Enter the desired number using the function keys and press CONFIRM.
Menu subtitle Function Range Unit Default value
DHW max. temp. Desired temperature of stored hot water 40 - 60 °C 50
DHW max. temperature
drop
Difference in temperature between DHW max. temp. and the temperature at which DHW mode restarts 5 - 30 °C 10
DHW max. operation time Max. time allowed for stored water heating DHW mode 30 - 120 min 60
DHW mode restriction The time period after DHW mode when space heating has priority over DHW mode temporarily pre-
venting further stored water heating
(Only when DHW max. operation time has passed.)
30 - 120 min 30
If you wish to make changes contact installer.
Explanation of DHW operation
• When the DHW tank temperature drops from “DHW max. temp.” by more than
the “DHW max. temperature drop” (set by installer), DHW mode operates and
the ow from the primary heating/cooling circuit is diverted to heat the water in
the DHW tank.
• When the temperature of the stored water reaches the ‘DHW max. temp.’ set by
the installer or if the ‘DHW max. operation time’ set by the installer is exceeded
DHW mode ceases to operate.
• Whilst DHW mode is in operation primary hot water is not directed to the space
heating/cooling circuit.
• Directly after DHW max. operation time ‘DHW mode restriction’ will routinely
operate. The duration of this feature is set by the installer and during its opera-
tion, DHW mode can not (normally) be reactivated, allowing time for the system
to deliver primary hot water to the space heating/cooling if required. However,
if at this time there is no current demand for space heating/cooling, the system
will automatically resume DHW mode. This will continue until it receives a de-
mand for space heating.
• After the ‘DHW mode restriction’ operation the DHW mode can operate again
and DHW tank heating will continue according to system demand.
<Eco mode>
DHW mode can run in either ‘Normal’ or ‘Eco’ mode. Normal mode will heat the
water in the DHW tank more quickly using the full power of the heat pump. Eco
mode takes a little longer to heat the water in the DHW tank but the energy used
is reduced. This is because heat pump operation is restricted using signals from
the FTC based on measured DHW tank temperature.
Note: The actual energy saved in Eco mode will vary according to outdoor
ambient temperature.
Return to the DHW/legionella prevention menu.
Legionella Prevention Mode settings (LP mode)
1. Use button F3 to choose legionella mode active YES/NO.
2. To edit the legionella function, press down the MENU button for 3 seconds
and select “hot water”, then press F4 key.
3. Use F1 and F2 keys to scroll through the menu selecting each subtitle in turn
by pressing CONFIRM. See the table below for description of each setting.
4. Enter the desired number using the function keys and press CONFIRM.
During Legionella Prevention Mode the temperature of the stored water is in-
creased above 60°C to inhibit legionella bacterium growth. It is strongly recom-
mended that this is done at regular intervals. Please check local regulations for
the recommended frequency of heat ups.
Note: When failures occur on the hydrobox, the LP mode may not function
normally.
Menu subtitle Function Range Unit Default value
Hot water temp. Desired temp of stored hot water 60–70 °C 65
Frequency Time between LP mode DHW tank heat ups 1–30 day 15
Start time Time when LP mode will begin 0:00–23:00 - 03:00
Max. operation time Maximum time allowed for LP mode DHW tank heat 1–5 hour 3
Duration of max. temp. The time period after LP mode max. water temp. has been reached 1–120 min 30
If you wish to make changes contact installer.

11
Customising Settings for Your Home
4
EN
DHW tank temp. Stop
Restart
Stop
Time
Start
Stop temp.
Legionella
hot water temp.
LP mode LP mode
Restart temp.
Space
heating/
cooling
Duration of Max. temp.
Mode
nish
(LP mode: Legionella Prevention mode)
Heating/Cooling
The heating/cooling menus deal with space heating/cooling using normally either
a radiator, fan-coil, or underoor heating/cooling system depending on the instal-
lation.
There are 3 heating modes
●Heating room temp. (Auto adaptation) ( )
● Heating ow temp. ( )
●Heating compensation curve ( )
●Cooling ow temp. ( )
<Room temp. (Auto adaptation) mode>
This mode is explained in detail in ‘Overview of Controls’ Section (page 4).
<Flow temp. mode>
The temperature of the water owing to the heating circuit is set by the installer
to best suit the space heating/cooling system design, and user’s desired require-
ments.
Explanation of compensation curve
During late spring and summer usually the demand for space heating is reduced.
To prevent the heat pump from producing excessive ow temperatures for the
primary circuit the compensation curve mode can be used to maximise efciency
and reduce running costs.
The compensation curve is used to restrict the ow temperature of the primary
space heating circuit dependent on the outdoor temperature. The FTC uses in-
formation from both an outdoor temperature sensor and a temperature sensor
on the primary circuit supply to ensure the heat pump is not producing excessive
ow temperatures if the weather conditions do not require it.
Your installer will set the parameters of the graph depending on local conditions
and type of space heating used in your home. It should not be necessary for you
to alter these settings. If however you nd that over a reasonable operating pe-
riod the space heating is not heating or is overheating your home, please contact
your installer so they can check your system for any problems and update these
settings if necessary.
Explanation of Legionella Prevention Mode operation
• At the time entered by the installer ‘Start time’ ow of useful heat from the sys-
tem is diverted to heat the water in the DHW tank.
• When the temperature of the stored water exceeds the ‘Hot Water temp.’ set by
the installer (above 65°C) primary circuit water is no longer diverted to heat the
DHW tank.
• Whilst LP mode is in operation hot water is not directed to the space heating
/cooling circuit.
• Directly after LP mode operation ‘Duration of max. temp.’ will operate. The du-
ration of this feature is set by the installer and during its operation stored water
temperature will be monitored.
• If stored water temperature should drop to LP restart temp., LP mode will re-
start and primary water ow from the heat source(s) will be directed to the DHW
tank to boost the temperature. Once the set time for Duration of Max. temp. has
passed LP mode will not recur for the set interval (set by installer).
• It is the responsibility of the installer to ensure the settings for legionella preven-
tion are compliant with local and national guidelines.
Please note that LP mode uses the assistance of electric heaters (if present)
to supplement the energy input of the heat pump. Heating water for long
periods of time is not efcient and will increase running costs. The installer
should give careful consideration to the necessity of legionella prevention
treatment whilst not wasting energy by heating the stored water for excessive
time periods. The end user should understand the importance of this feature.
ALWAYS COMPLY WITH LOCAL AND NATIONAL GUIDANCE FOR YOUR
COUNTRY REGARDING LEGIONELLA PREVENTION.
Forced DHW
The forced DHW function is used to force the system to operate in DHW mode. In
normal operation the water in the DHW tank will be heated either to the set tem-
perature or for the maximum DHW time, whichever occurs rst. However should
there be a high demand for hot water ‘Forced DHW’ function can be used to pre-
vent the system from routinely switching to space heating/cooling and continue to
provide DHW tank heating.
Forced DHW operation is activated by pressing button F1 and Back button in the
‘Option Screen’. After DHW operation nishes, the system will automatically re-
turn to normal operation. To cancel forced DHW operation hold down button F1 in
the ‘Option Screen’.
: Flow temp.
: Outdoor ambient temp.

12
Customising Settings for Your Home
4
EN
Holiday Mode
Holiday mode can be used to keep the system running at lower ow temperatures
and thus reduced power usage whilst the property is unoccupied. Holiday mode
can run either ow temp., room temp., heating, compensation curve heating and
DHW all at reduced ow temperatures to save energy if the occupier is absent.
From the main menu screen press button E should be pressed. Be careful not to
hold down button E for too long as this will turn off the controller and system.
Once the holiday mode activation screen is displayed you can activate/deactivate
and select the duration that you would like holiday mode to run for.
●Press button F1 to activate or deactivate holiday mode.
●Use buttons F2, F3 and F4 to input the date which you would like holiday
mode to activate or deactivate holiday mode for space heating.
<Editing holiday mode>
Refer to the menu tree in “Main remote controller” of Installation Manual.
Should you require the Holiday mode settings e.g. the ow temp., room temp. to
be altered you should contact your installer.
Schedule timer
Scheduled timer can be set in two ways, for example; one for summer and the
other for winter. (Refer to as “Schedule 1” and “Schedule 2” respectively.) Once
the term (months) for the Schedule 2 is specied, rest of the term will be speci-
ed as Schedule 1. In each Schedule, an operational pattern of modes (Heating/
Cooling/DHW) can be set. If no operational pattern is set for Schedule2, only the
pattern for Schedule 1 will be valid. If Schedule 2 is set to full-year (i.e. March to
Feb.), only the operational pattern for Schedule 2 will be valid.
The schedule timer is activated or deactivated in the option screen. (See
‘General Operation’ section)
<Setting the Schedule period>
1. From the main settings menu use F2 and F3 to highlight the schedule icon
then press CONFIRM.
2. The Schedule period preview screen is displayed.
3. To change the Schedule period, press F4. button.
4. The time bar edit screen is displayed.
5. Use F2/F3 button to point at a starting month of the Schedule2, then press
CONFIRM.
6. Use F2/F3 button to point at an ending month of the Schedule2, then press
CONFIRM.
7. Press F4 to save settings.
<Setting the Schedule timer>
1. From the main settings menu use F2 and F3 to highlight the schedule icon
then press CONFIRM.
2.
From the schedule 2 period preview screen use F1 and F2 to scroll through the
selecting each subtitle in turn by pressing CONFIRM.
3. The schedule timer sub menu will be displayed. The icons show the following
modes;
• Heating
• Cooling
• DHW
4. Use F2 and F3 buttons to move between mode icons press CONFIRM to be
shown the PREVIEW screen for each mode.
The preview screen allows you to view the current settings. In 2-zone heating/
cooling operation, press F1 to switch between Zone1 and Zone2. Days of the
week are displayed across the top of the screen. Where day appears underlined
the settings are the same for all those days underlined.
Hours of the day and night are represented as a bar across the main part of the
screen. Where the bar is solid black, space heating/cooling and DHW (whichever
is selected) is allowed.
Schedule1 mode select screen
Schedule2 period preview screen

13
Customising Settings for Your Home
4
EN
Preview screen
Day of week select screen
Service Menu
The service menu is password protected to prevent accidental changes being
made to the operation settings, by unauthorised/unqualied persons.
Time of period setting screen 1
Time of period setting screen 2
5. In the preview menu screen press F4 button.
6. First select the days of the week you wish to schedule.
7. Press F2/F3 buttons to move between days and F1 to check or uncheck the
box.
8. When you have selected the days press CONFIRM.
9. The time bar edit screen will be displayed.
10.Use buttons F2/F3 to move to the point at which you do not want the selected
mode to be active press CONFIRM to start.
11.Use F3 button to set the required time of inactivity then press CONFIRM.
12.You can add up to 4 periods of inactivity within a 24 hour interval.
13.Press F4 to save settings.
When scheduling heating, button F1 changes the scheduled variable between
time and temperature. This enables a lower temperature to be set for a number of
hours e.g. a lower temperature may be required at night when the occupants are
sleeping.
Note:
• The schedule timer for space heating/cooling and DHW are set in the
same way. However for DHW only time can be used as scheduling vari-
able.
• A small rubbish bin character is also displayed choosing this icon will
delete the last unsaved action.
• It is necessary to use the SAVE function F4 button to save settings. CON-
FIRM does NOT act as SAVE for this menu.

14
Service and Maintenance
5
EN
Troubleshooting
The following table is to be used as a guide to possible problems. It is not exhaustive and all problems should be investigated by the installer or another competent person.
Users should not attempt to repair the system themselves.
At no time should the system be operating with the safety devices by-passed or plugged.
Fault symptom Possible cause Solution
Cold water at taps
(systems with DHW tank)
Scheduled control off period Check schedule settings and change if necessary.
All hot water from DHW tank used Ensure DHW mode is operating and wait for DHW tank to re-heat.
Heat pump or electric heaters not working Contact installer.
Heating system does not get up
to set temperature.
Prohibit, schedule or holiday mode selected Check settings and change as appropriate.
Incorrectly sized radiators Contact installer.
The room in which the temperature sensor is located is at
a different temperature to the rest of the house.
Reposition the temperature sensor to a more suitable room.
Battery problem *wireless control only Check the battery power and replace if at.
The cooling system does not
cool down to the set tempera-
ture. (ONLY for ERSC(D) and
ERST20C(D) models)
When the water in the circulation circuit is unduly hot,
Cooling mode starts with a delay for the protection of the
outdoor unit.
Normal operation
When the outdoor ambient temperature is signicantly low,
Cooling mode does not start running to avoid freezing of
the water pipes.
If the freeze stat. function is not necessary, contact installer to change the
settings.
After DHW operation room tem-
perature rises a little.
At the end of the DHW mode operation the 3-way valve
diverts hot water away from the DHW tank into space
heating circuit. This is done to prevent the cylinder unit
components from overheating. The amount of hot water
directed into the space heating circuit is dependent on the
type of system and the pipe run between the plate heat
exchanger and the cylinder unit.
Normal operation no action necessary.
Heating emitter is hot in the DHW
mode. (The room temperature
rises.)
The 3-way valve may have foreign objects in it, or hot wa-
ter may ow to the heating side due to malfunctions.
Contact installer.
Schedule function inhibits the
system from operating but the
outdoor unit operates.
Freeze stat. function is active. Normal operation no action necessary.
Pump runs without reason for
short time.
Pump jam prevention mechanism to inhibit the build up of
scale.
Normal operation no action necessary.
Mechanical noise heard coming
from cylinder unit
Heaters switching on/off Normal operation no action required.
3-way valve changing position between DHW and heating
mode.
Normal operation no action necessary.
Noisy pipework Air trapped in the system Try bleeding radiators (if present) If the symptoms persist contact installer.
Loose pipework Contact installer.
Water discharges from one of the
relief valves
The system has overheated or overpressurised Switch off power to the heat pump and any immersion heaters then con-
tact installer.
Small amounts of water drip from
one of the relief valves.
Dirt may be preventing a tight seal in the valve Twist the valve cap in the direction indicted until a click is heard. This will
release a small amount of water ushing dirt from the valve. Be very care-
ful the water released will be hot. Should the valve continue to drip contact
installer as the rubber seal may be damaged and need replacing.
An error code appears in the
main remote controller display.
The indoor or outdoor unit is reporting an abnormal condi-
tion
Make a note of the error code number and contact installer.
Heat pump is forced to turn ON
and OFF.
Smart grid ready input (IN11 and IN12) is used, and
switch-on and off commands are input.
Normal operation no action necessary.
<Power failure>
All setting will be saved for 1 week with no power, after 1 week Date/Time ONLY will be saved.
Maintenance
Maintenance to the cylinder unit and hydrobox should be carried out annually by a competent person only. Users should not try to service or replace parts of the cylinder unit
or hydrobox themselves. Failure to observe this instruction could result in injury to the user, damage to the unit and the product warranty becoming invalid.
In addition to annual servicing it is necessary to replace or inspect some parts after a certain period of system operation. Please see tables below for detailed instructions.
Replacement and inspection of parts should always be done by a competent person with relevant training and qualications.
Parts which require regular replacement
Parts Replace every Possible failures
Pressure relief valve (PRV)
Air vent (Auto/Manual)
Drain cock (Primary/Sanitary circuit)
Manometer
Inlet control group (ICG)*
6 years Water leakage
*OPTIONAL PARTS for UK
Parts which require regular inspection
Parts Check every Possible failures
Immersion heater 2 years
Earth leakage causing
circuit breaker to activate
(Heater is always OFF)
Water circulation pump 20,000 hrs (3 years) Water circulation pump
failure
Parts which must NOT be reused when servicing
* O-ring
* Gasket
Note: Always replace the gasket for pump with a new one at each regular
maintenance (every 20,000 hours of use or every 3 years).

15
Serial number
6
EN
■ The serial number is indicated on the SPEC NAME PLATE.
Year of manufacture (western calendar) : 2014 4, 2015 5
Month of manufacture: A (1), B (2), C (3), D (4), E (5), F (6), G (7), H (8), J (9), K (10), L (11), M (12)
Sequential number for each unit: 00001–99999

16
[Notes]
EN

1
FR
Table des matières
1. Mesures de précaution .................................... 2
2. Introduction....................................................... 3
3. Votre système de chauffage ............................ 5
4. Personnalisation des réglages pour votre
foyer................................................................... 7
5. Entretien et maintenance............................... 14
Abréviations et glossaire
N° Abréviations/Mot Description
1 Mode Courbe Loi d'eau Chauffage incorporant la Loi d'eau de la température extérieure
2 COP Coefcient de performance indiquant le rendement de la pompe à chaleur
3 Mode de refroidissement Climatisation des locaux par ventilo-convecteur ou refroidissement sous plancher
4 Mode ECS Mode de chauffage eau chaude sanitaire pour les douches, les éviers etc
5 Débit Volume d’eau par minutes passant dans les tuyaux du circuit de chauffage ou d’eau sanitaire.
6 Fonction antigel Routine de contrôle du chauffage pour éviter le gel des canalisations d'eau
7 FTC Régulateur de température de départ d'eau, carte de circuit imprimé chargée de contrôler le système
8 Mode de chauffage Chauffage par radiateurs ou plancher chauffant
9 Ecodan hydrobox Modules hydrauliques chauffage seul
10 Ecodan hydrobox duo Module hydraulique double service (chauffage + eau chaude sanitaire)
11 Legionelle Bactérie susceptible de se trouver dans les tuyauteries, les douches et les ballons d'eau et pouvant provoquer la maladie du légionnaire
12 Mode CT Mode choc thermique: fonction disponible sur les systèmes équipés de ballon d'eau an d'éviter la croissance de la bactérie legionelle
13 Modèle Package Échangeur à plaques (uide frigorigène - eau) dans l'unité extérieure de la pompe à chaleur
14 PRV Soupape de sécurité
15 Température de retour Température à laquelle est délivrée l'eau à partir du circuit primaire
16 Modèle Split Échangeur à plaque (uide frigorigène - eau) dans le module hydraulique
17 VTR Vanne thermostatique de radiateur : vanne sur l'entrée ou la sortie du panneau de radiateur pour contrôler l'émission de chaleur
18 MR Télécommande principale
19 R1-8 Télécommande sans l
20 T1 Sonde de température laire
*module hydraulique
ECODAN hydrobox* duo & ECODAN hydrobox*
■ Certication des pompes à chaleur
La marque “NF pompe à chaleur” est une certication indépendante prouvant que les performances des pompes à chaleur et la qualité de production de l’usine
sont conformes au référentiel NF-414. Les combinaisons unités intérieures et unités extérieures, ainsi que leurs applications autorisées à utiliser la marque NF
PAC peuvent être consultées sur le site web www.marque-nf.com

2
Mesures de précaution
1
FR
AVERTISSEMENT
• CetappareilnedoitPASêtreinstallénifairel'objetdemaintenanceparl'utilisateur.S'iln'estpascorrectementinstallé,desfuitesd'eau,deschocs
électriques ou un incendie pourraient en résulter.
• NebloquezJAMAISlessoupapesd'urgence.
• N'utilisezpasl'appareilsansquelessoupapesd'urgenceetlesprotectionthermostatiquessoientopérationnelles.Encasdedoute,contactezvotre
installateur.
• Nepasmonteretnepass'allongersurl'appareil.
• Neplacezpasd'objetenhautouendessousdel'appareiletrespectezlesexigencesenmatièred'espacementdemaintenancelorsquevousdisposez
desobjetsàproximitédel'appareil.
• Netouchezpasàl'appareilniàlatélécommandeaveclesmainshumidescarunchocélectriquepourraitenrésulter.
• Neretirezpaslespanneauxdel'appareiletn'essayezpasd'introduiredeforcedesobjetsdanslecarterdel'appareil.
• Netouchezpaslatuyauteriesaillantecarellepourraitêtretrèschaudeetprovoquerdesbrûlurescorporelles.
• Sil'appareilcommenceàvibrerouàgénérerdesbruitsanormaux,interrompezlefonctionnement,isolezl'alimentationetcontactezl'installateur.
• Sil'appareilcommenceàgénérerdesodeursdebrûlé,interrompezlefonctionnement,isolezl'alimentationetcontactezl'installateur.
• Sidel'eauestvisiblementévacuéeparl'entonnoir,interrompezlefonctionnement,isolezl'alimentationetcontactezl'installateur.
• Cetappareiln'estpasdestinéàuneutilisationpardespersonnes(ycomprislesenfants)physiquement,sensoriellementoumentalementhandicapées,
oumanquantd'expérienceetdeconnaissances,àmoinsqu'ellesnesoientlasurveillanceouqu'ellesn'exécutentlesinstructionsd'utilisationde
l'appareilfourniesparunepersonneresponsabledeleursécurité.
• Lesenfantsdoiventfairel'objetd'unesurveillanceandes'assurerqu'ilsnejouentpasavecl'appareil.
• Encasdefuiteduuidefrigorigène,interrompezlefonctionnementdel'appareil,ventilezintensémentlapièceetcontactezl'installateur.
• Silecâbled'alimentationestendommagé,ildoitêtreremplacéparlefabricant,sonagentd'entretienoudespersonnesdequalicationsimilairean
d'évitertoutrisque.
• Neplacezpasdecontainerscontenantdesliquidesenhautdel’Ecodanhydroboxduo.S’ilsfuientouserenversentsurl’Ecodanhydroboxduo,cela
risqued’endommagerl’unitéoudeprovoquerunincendie.
• Lorsquevousinstallez,déplacezoueffectuezl’entretiendel’Ecodanhydroboxduo,utilisezexclusivementleuidefrigorigènespécié(R410A)pour
remplirlesconduitesdeuidefrigorigène.Nelemélangezavecaucunautreuidefrigorigèneetempêchezl’airderesterdanslesconduites.Sidel’air
estmélangéavecleuidefrigorigène,celapeutprovoquerunesurpressionanormaledanslaconduitedeuidesfrigorigènesetrisqued’entraînerune
explosionoud’autressituationsdangereuses.
L’utilisationd’unuidefrigorigènedifférentdeceluispéciédanslesystèmeprovoqueraunedéfaillancemécanique,undysfonctionnementdusystème
oulapannedel’unité.Danslepiredescas,celapeutconduireàunsérieuxobstacledanslagarantiedesécuritéduproduit.
• Enmodedechauffage,and'éviterquelesémetteursdechaleursoientendommagésparuneeauexcessivementchaude,réglezlatempératurede
départd'eausurunevaleurminimalede2°Cendessousdelatempératuremaximaleadmissibledetouslesémetteursdechaleur.PourlaZone2,
réglezlatempératurededépartd'eausurunevaleurminimalede5ºCendessousdelatempératurededépartd'eaumaximaleadmissibledetousles
émetteursdechaleurducircuitdelaZone2.
• Cetappareilestprincipalementdestinéàuneutilisationdomestique.Pourlesapplicationscommerciales,cetappareilestdestinéàêtreutilisépardes
utilisateursexpertsouformésdansdesmagasins,dansl’industrielégèreetdansdesexploitationsagricoles,oudanslecadred’uneutilisationcom-
merciale par des non-spécialistes.
ATTENTION
• N'utilisezpasd'objetpointupourappuyersurlesboutonsdelatélécommandeprincipalecarcelalesendommagerait.
• Sil'alimentationdel'appareildoitêtrecoupéependantunepériodeprolongée,l'eaudoitêtreévacuée.
• Neplacezpasdeconteneurouautresrécipientsremplisd'eauenhautdupanneau.
• Suivezlesinstructionsfourniesdansleprésentmanueletlesréglementationslocaleslorsquevousutilisezcetappareil.
<Figure 1.1>
►Ilestimportantdelirelesmesuresdesécuritéavantd'utilisercetappareil.
► Lespointsdesécuritésuivantssontfournisand'éviterquevousvousblessiezouquevousn'endommagiezl'appareil.Veuillezvousyconformer.
Utilisé dans ce manuel
AVERTISSEMENT :
Lesprécautionsrépertoriéesdanscetitredoiventêtrerespectées
pourévitertouteblessuredel'utilisateurousondécès.
ATTENTION :
Lesprécautionsrépertoriéesdanscetitredoiventêtre
respectéespourévitertoutdommagedel'appareil.
Eliminationdel’unité
Ce symbole concerne uniquement les pays européens.
Cesymboleestconformeàladirective2012/19/EU,article14
surl'informationdesutilisateursetàl'annexeIX,et/ou
àladirective2006/66/EC,article20surl'informationdes
utilisateursnauxetàl'annexeII.
Vos systèmes de chauffage Mitsubishi Electric sont fabriqués
avec des composants et des matières de haute qualité qui
peuvent être recyclés et/ou réutilisés. Le symbole de la gure 1.1
signie que les appareils électriques et électroniques, les piles
et les accumulateurs, lorsqu'ils sont en n de vie, ne doivent pas
être jetés avec vos déchets ménagers.
Lorsqu'un symbole chimique est ajouté sous ce symbole
(Figure 1.1), cela signie que les piles ou les accumulateurs
contiennent une certaine concentration de métal lourd. L'indication
est la suivante ;
Hg : mercure (0,0005 %), Cd : cadmium (0,002 %), Pb : plomb
(0,004 %)
Certains pays de l'Union européenne disposent de leurs propres systèmes de
collecte des produits électriques et électroniques, piles et accumulateurs usagés.
Veuillez jeter ces appareils, piles et accumulateurs correctement auprès de votre
centre de recyclage/collecte des déchets local.
Pourplusd'informationssurl'éliminationdesdéchetspropreàvotrepays,
contactezvotrerevendeurMitsubishiElectriclocal.
Aidez-nous à préserver notre environnement.

2 kW
3 kW
1 kW
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Introduction
2
FR
Schéma de l'ensemble Ecodan hydrobox duo
4. Évaporateur
(Échangeur de chaleur à air avec unité extérieure)
Énergie thermique renouvelable à faible
température prise dans l'environnement
Entrée d'énergie
électrique
Sortie d'énergie thermique
2. Condenseur
(Échangeur à plaque)
1. Compresseur
3. Détendeur
Ce mode d'emploi a pour but d'informer les utilisateurs sur le fonctionnement du
système de chauffage de la pompe à chaleur, l'utilisation optimale du système et
la modication des réglages de la télécommande principale.
Cetteunitén'estpasconçuepourêtreutilisépardespersonnes(ycompris
desenfants)ayantdesdéciencesphysiques,sensoriellesoumentales,
oudotéesd'uneexpérienceetdeconnaissancesinsufsantes,saufsi
ellessontsurveilléesparouontreçudesinstructionsd'unepersonne
responsabledeleursécuritépourutiliserl'unité.
Lesenfantsdoiventêtresurveilléspours'assurerqu'ilsnejouentpasavec
l'unité.
Cemoded'emploidoitêtreconservéavecl'unitéoudansunendroit
accessiblepourpouvoirs'yréférerrapidement.
Présentation générale du système
La pompe à chaleur Air/Eau Ecodan de Mitsubishi Electric se compose des élé-
ments suivants : une unité extérieure et une unité intérieure Ecodan hydrobox
(duo) intégrant de série une télécommande principale graphique.
Principedefonctionnementdelapompeàchaleur
Chauffage et eau chaude
Les pompes à chaleur utilisent l'énergie électrique et une faible énergie thermique
provenant de l'air extérieur pour chauffer un uide frigorigène qui, à son tour,
réchauffe l'eau pour une utilisation domestique et le chauffage. L'efcacité d'une
pompe à chaleur s'exprime sous la forme d'un coefcient de performance (COP)
déni comme étant le rapport entre la chaleur délivrée et la puissance consommée.
Le fonctionnement d'une pompe à chaleur est semblable à celui d'un réfrigérateur
fonctionnant en sens inverse. Ce processus est connu sous le nom de cycle à
compression de vapeur, et les éléments suivants en donnent une explication plus détaillée.
La première phase commence lorsque le uide frigorigène est froid et à basse
pression.
1. Le uide frigorigène dans le circuit est comprimé lorsqu'il passe dans le
compresseur. Il se transforme en gaz chaud à haute pression. La température
augmente également généralement jusqu'à 60 °C.
2. Le gaz chaud du uide frigorigène est alors condensé lorsqu'il passe sur une
face d'un échangeur à plaque. La chaleur du gaz du uide frigorigène est
transférée vers le côté plus froid (côté eau) de l'échangeur de chaleur. Au fur
et à mesure que la température du uide frigorigène diminue, celui-ci passe de
l'état gazeux à l'état liquide.
3. Il se présente maintenant sous la forme d'un liquide froid ayant encore une
pression élevée. Pour diminuer la pression, le liquide passe à travers un
détendeur. La pression chute, mais le uide frigorigène reste à l'état liquide
froid.
4. L'étape nale du cycle intervient lorsque le uide frigorigène passe dans
l'évaporateur et s'évapore. C'est à ce moment qu'une partie de l'énergie
thermique libre de l'air extérieur est absorbée par le uide frigorigène.
Seul le fluide frigorigène effectue tout ce cycle ; l'eau est chauffée lorsqu'elle
passe dans l'échangeur à plaque. L'énergie thermique provenant du uide frigo-
rigène est transmise, par le biais de l'échangeur à plaque, à l'eau froide, ce qui
augmente la température de celle-ci. Cette eau réchauffée entre dans le circuit
primaire et est mise en circulation et utilisée pour alimenter le système de chauf-
fage et chauffer indirectement le contenu du ballon d'ECS (le cas échéant).