AERMEC HMI-BHP User manual
22/08 – 6228081_04
Translation of Original instructions
www.aermec.com
User manual
2020-02-20 08:52
0.0°C 0.0°C
+
-
25°C
HMI - BHP
This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the envi-
ronment or human health from uncontrolled disposal of Waste Electrical and Electronic Equipment (WEEE), please return the device using appropriate
collection systems, or contact the retailer where the product was purchased. Please contact your local authority for further details. Illegal dumping of
the product by the user entails the application of administrative sanctions provided by law.
All specications are subject to change without prior notice. Although every eort has been made to ensure accuracy, Aermec shall not be held liable for any errors or
omissions.
SAFETY CERTIFICATIONS
Dear Customer,
Thank you for wanting to learn about a product Aermec. This product is the result of many years of experience and in-depth engineering research, and it is
built using top quality materials and advanced technologies.
The manual you are about to read is meant to present the product and help you select the unit that best meets the needs of your system.
However, please note that for a more accurate selection, you can also use the Magellano selection program, available on our website.
Aermec Aermec, always attentive to the continuous changes in the market and its regulations, reserves the right to make all the changes deemed necessary
for improving the product, including technical data.
Thank you again.
AERMEC S.p.A.
3
TABLE OF CONTENTS
1. User interface .......................................................................................p.5
Main Page (Home) .................................................................................p.5
2. Structure of the menus...................................................................p.6
Functions...................................................................................................p.6
Parameters................................................................................................p.6
View.............................................................................................................p.6
Commission (Function)........................................................................p.7
Commission (Parameter).....................................................................p.7
General.......................................................................................................p.7
3. Basic functions.....................................................................................p.8
Switching the unit on and o (On/O)..........................................p.8
Selecting a menu....................................................................................p.8
4. Function menu ....................................................................................p.9
Navigating the menu............................................................................p.9
Setting the operating mode (Mode)...............................................p.9
Activating the function for fast domestic hot water
production (Fast hot water)................................................................p.9
Setting the priority between cooling and domestic hot
water production (Cool+hot water)................................................p.9
Set the priority between heating and domestic hot water
production (Heat+hot water) ......................................................... p.10
Setting the noise reduction function (Quiet mode)............... p.10
Setting the automatic setting compensation on the basis
of external air (Weather depend).................................................. p.10
Setting a timer for programmed switch-on and/or switch-
o (Weekly timer)................................................................................ p.11
Enabling the Holiday Program function used for the
weekly timer (Holiday release)....................................................... p.12
Enabling/disabling the anti-legionella cycle (Disinfection)
................................................................................................................... p.12
Setting a timed switch-on/switch-o (Clock timer) ............... p.12
Setting programmed setting changes on system water
delivery (Temp. timer) ....................................................................... p.13
Enabling emergency operation for heating or DHW
(Emergen. mode)................................................................................. p.14
Setting the winter period absence function (Holiday
mode) ...................................................................................................... p.14
Setting the daily timer programming (Preset mode)............. p.15
Deleting current errors (Error reset) ............................................. p.15
WiFi connection reset function (WiFi reset)............................... p.15
Loading the default settings (Reset)............................................ p.15
5. Parameter menu.............................................................................. p.16
Navigating the menu......................................................................... p.16
Setting the temperature set-points used by the unit in
the various modes (WOT-Cool~ ΔT-hot water)......................... p.16
6. View menu .......................................................................................... p.17
Navigating the menu......................................................................... p.17
Viewing the status of the unit components (Status).............. p.17
Viewing the status of the unit parameters (Parameter) ........ p.18
Viewing the active errors on the unit (Error)............................. p.18
Viewing the error log (Error log).................................................... p.18
Viewing software information (Version)..................................... p.18
7. Commission menu.......................................................................... p.19
Navigating the menu......................................................................... p.19
Setting the control logic (Ctrl.state) ............................................ p.19
Setting the status of the 2-way valve in cooling mode
(Cool 2-Way valve)............................................................................... p.19
Setting the status of the 2-way valve in heating mode
(Heat 2-Way valve) .............................................................................. p.20
Setting solar system integration (Solar setting)....................... p.20
Set the installation of a compatible Aermec accessory
tank (DHW tank) .................................................................................. p.20
Setting the use of an external thermostat (Thermostat)...... p.20
Setting an additional heat source (Other thermal)................. p.20
Setting an additional heater (Optional E-heater).................... p.21
Setting the installation of the remote room temperature
4
probe (Ambient sensor).................................................................... p.22
Setting the air purging function (Air removal)......................... p.22
Setting the pre-heating procedure for radiant panels
(Floor debug)........................................................................................ p.22
Activating the defrost cycle (Manual defrost)........................... p.22
Activating mode forcing (Force mode) ....................................... p.23
Activating auxiliary device management (Gate-Ctrl) ............ p.23
Setting of max. absorption (A/P limit)......................................... p.23
Setting the serial address of the unit (Address) ....................... p.23
Setting the refrigerant recovery function (Refri. recovery)
................................................................................................................... p.23
Set the management logic for the compatible Aermec
accessory tank heater (elec. tank heater) ................................... p.24
Set the memory contact function (Memory contact)............ p.24
Setting the maximum temperature for the DHW storage
tank via heat pump only (T HP max)............................................ p.24
Setting the cooling operating time (Cool run time)............... p.24
Setting the heating operating time (Heat run time).............. p.24
8. Main menu.......................................................................................... p.25
Navigating the menu......................................................................... p.25
Setting the unit of measurement (Temp. unit)........................ p.25
Activating/deactivating the memory (On/o memory)....... p.25
Activating/deactivating the sound (Beeper)............................. p.25
Setting the display lighting (Back light)...................................... p.25
Setting the system date and time (Time&Date)....................... p.25
Selecting the system language (Language).............................. p.26
Activating the WiFi (WiFi)................................................................. p.26
ModBus RS485 connection.............................................................. p.26
9. Alarm codes........................................................................................ p.27
5
1 USER INTERFACE
1.1 MAIN PAGE (HOME)
2020-02-20 08:52 0.0°C 0.0°C
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-25°C
After startup, the main page (Home) appears on the display.
From this page it will be possible to:
— select one of the menus available to the user;
— turn on / o the unit;
— display information regarding the operating mode, any active errors, in addition
to the system date and time;
— set the work set and operating mode for the unit.
NB: after 10 minutes of inactivity, the system will automatically return to the main
page.
Depending on status and active mode, one or more icons may be displayed at the
top of the screen:
Icon Meaning
HEATING mode active
COOLING mode active
Domestic hot water mode active
Indicates the measured external temperature
Based on the type of regulation specied on the “Control temp.”Page (Paragraph 7.2Setting the control logic (Ctrl.state)p.19):
Room temperature;
System delivery temperature;
This icon indicates that an alarm is currently in progress
This icon may indicate that:
External contact;
Anti-legionella cycle failed;
while several keys are available at the bottom of the display:
Button Function
Key to return to the menu selection window
Key to change the operating mode between heating and cooling
Key to enable domestic hot water production (which will add to the operating mode already set)
Button to turn the unit on or o; the color of the button will indicate the status of the unit:
Green: unit on;
White: unit o;
6
2 STRUCTURE OF THE MENUS
2.1 FUNCTIONS
Page Content Paragraph
1
Mode
4.2Setting the operating mode (Mode)p.9
Fast hot water
4.3 Activating the function for fast domestic hot water production
(Fast hot water)p.9
Cool+hot water
4.4Setting the priority between cooling and domestic hot water pro-
duction (Cool+hot water)p.9
Heat+hot water
4.5Set the priority between heating and domestic hot water produc-
tion (Heat+hot water)p.10
Quiet mode
4.6Setting the noise reduction function (Quiet mode)p.10
2
Energy-saving mode
4.7Setting the automatic setting compensation on the basis of exter-
nal air (Weather depend)p.10
Weekly timer
4.8 Setting a timer for programmed switch-on and/or switch-o
(Weekly timer)p.11
Holiday release
4.9Enabling the Holiday Program function used for the weekly timer
(Holiday release)p.12
Disinfection
4.10 Enabling/disabling the anti-legionella cycle (Disinfec-
tion)p.12
Timer
4.11Setting a timed switch-on/switch-o (Clock timer)p.12
3
Temp. timer
4.12Setting programmed setting changes on system water delivery
(Temp. timer)p.13
Emergen. mode
4.13Enabling emergency operation for heating or DHW (Emergen.
mode)p.14
Holiday mode
4.14 Setting the winter period absence function (Holiday
mode)p.14
Preset mode
4.15Setting the daily timer programming (Preset mode)p.15
Error reset
4.16Deleting current errors (Error reset)p.15
4WiFi reset
4.17WiFi connection reset function (WiFi reset)p.15
Reset
4.18Loading the default settings (Reset)p.15
2.2 PARAMETERS
Page Content Paragraph
1
WOT-Cool
5.2Setting the temperature set-points used by the unit in the various
modes (WOT-Cool~ T-hot water)p.16
WOT-heat
RT-Cool
RT-Heat
T-tank ctrl.
2
T-room temp
T-Cool
T-Heat
T-hot water
2.3 VIEW
Page Content Paragraph
1
Status
6.2Viewing the status of the unit components (Status)p.17
Parameters
6.3Viewing the status of the unit parameters (Parameter)p.18
Error
6.4Viewing the active errors on the unit (Error)p.18
Error log
6.5Viewing the error log (Error log)p.18
Version
6.6Viewing software information (Version)p.18
7
2.4 COMMISSION (FUNCTION)
Page Content Paragraph
1
Ctrl.state
7.2Setting the control logic (Ctrl.state)p.19
Cool 2-Way valve
7.3Setting the status of the 2-way valve in cooling mode (Cool 2-Way
valve)p.19
Heat 2-Way valve
7.4Setting the status of the 2-way valve in heating mode (Heat 2-Way
valve)p.20
Solar setting
7.5Setting solar system integration (Solar setting)p.20
Water tank
7.6Set the installation of a compatible Aermec accessory tank (DHW
tank)p.20
2
Thermostat
7.7Setting the use of an external thermostat (Thermostat)p.20
Other thermal
7.8Setting an additional heat source (Other thermal)p.20
Optional E-heater
7.9Setting an additional heater (Optional E-heater)p.21
Ambient sensor
7.10Setting the installation of the remote room temperature probe
(Ambient sensor)p.22
Air removal
7.11Setting the air purging function (Air removal)p.22
3
Floor debug
7.12Setting the pre-heating procedure for radiant panels (Floor de-
bug)p.22
Manual defrosting
7.13Activating the defrost cycle (Manual defrost)p.22
Force mode
7.14Activating mode forcing (Force mode)p.23
External contact
7.15Activating auxiliary device management (Gate-Ctrl)p.23
Current limit
7.16Setting of max. absorption (A/P limit)p.23
4
Address
7.17Setting the serial address of the unit (Address)p.23
Refri. recovery
7.18Setting the refrigerant recovery function (Refri. recovery)p.23
Tank heater
7.19Set the management logic for the compatible Aermec accessory
tank heater (elec. tank heater)p.24
Memory contact
7.20Set the memory contact function (Memory contact)p.24
2.5 COMMISSION (PARAMETER)
Page Content Paragraph
1
T HP max
7.21Setting the maximum temperature for the DHW storage tank via
heat pump only (T HP max)p.24
Cool run time
7.22Setting the cooling operating time (Cool run time)p.24
Heat run time
7.23Setting the heating operating time (Heat run time)p.24
2.6 GENERAL
Page Content Paragraph
1
Temp. unit
8.2Setting the unit of measurement (Temp. unit)p.25
On/o memory
8.3Activating/deactivating the memory (On/o memory)p.25
Beeper
8.4Activating/deactivating the sound (Beeper)p.25
Back light
8.5Setting the display lighting (Back light)p.25
Time&Date
8.6Setting the system date and time (Time&Date)p.25
2Language
8.7Selecting the system language (Language)p.26
WiFi
8.8Activating the WiFi (WiFi)p.26
8
3 BASIC FUNCTIONS
3.1 SWITCHING THE UNIT ON AND OFF (ON/OFF)
16:41
2017-05-04 Fri.
Function Parameter View Commission General
To switch the unit on or o, press the ag shown in the gure; once this is done, the
system will ask for conrmation of the switching on or o through another window
where the on/o command can be conrmed or cancelled.
Note:
1. Once the voltage supply has been connected for the rst start-up, this function
will be set on “O”;
2. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure.
3.2 SELECTING A MENU
16:41
2017-05-04 Fri.
Function Parameter View Commission General
To enter one of the menus available to the user; click on the corresponding icon;
on entering them, each menu (depending on the one selected) will allow you to
browse the various pages or enter other sub-menus linked to specic functions.
Press the HOME icon to return to the main page.
9
4 FUNCTION MENU
4.1 NAVIGATING THE MENU
1 2
3 4
Function (1/4)
Mode: Cool
Fast hot water: O
Cool + hot water: Hot water
Heat + hot water: Hot water
Quiet mode: O
This menu is used to set operating functions for the unit. The following keys are
used to navigate this menu:
1. Move back to the previous page;
2. Move on to the next page;
3. Go back to the higher level menu;
4. Go back to the main page;
To access a function, click on the text of that function.
Note:
— While navigating the menu pages, the current page of the selected menu will
be displayed in the header (i.e. in the darker upper area);
— Any functions not available will be highlighted by the letters “NA”.
4.2 SETTING THE OPERATING MODE (MODE)
Mode
Heat Heat + Hot water
Hot water Cool
Cool + hot water
OK Cancel
After accessing the“Mode”function, you can choose one of the modes available by
clicking directly on the text that identies it and then conrming with the ”OK”key.
Note:
1. Before changing the operating mode, the unit must be OFF, otherwise a mes-
sage will warn you to turn the unit o before changing the mode;
2. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, the only modes
available will be HEATING and COOLING;
3. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
4. The default value for this parameter is: “Heat“.
4.3 ACTIVATING THE FUNCTION FOR FAST DOMESTIC HOT
WATER PRODUCTION (FAST HOT WATER)
Fast hot water
On
O
OK Cancel
After accessing the “Fast hot water” function, you can choose whether to activate
- along with the unit compressor - the electric heater inserted in the compatible
Aermec accessory tank (specic for this model) for the production of domestic hot
water. To activate this function, click directly on “ON”and then conrm with “OK”.
Note:
1. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, this function
will not be available;
2. To ensure even better energy saving, it is advisable to disable this function;
3. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
4. The default value for this parameter is: “O“.
4.4 SETTING THE PRIORITY BETWEEN COOLING AND
DOMESTIC HOT WATER PRODUCTION (COOL+HOT
WATER)
Cool + hot water
Hot water
Cool
OK Cancel
After accessing the“Cool+hot water”function, you can select“Cool”to force the unit
to rst of all satisfy the system terminal side; by selecting “Hot water”, priority is giv-
en to domestic hot water production. Select the priority, then press“OK”to conrm.
Note:
1. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, this function
will not be available;
2. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
3. The default value for this parameter is: “Cool”.
10
4.5 SET THE PRIORITY BETWEEN HEATING AND DOMESTIC
HOT WATER PRODUCTION (HEAT+HOT WATER)
Heat + hot water
Hot water
Heat
OK Cancel
After accessing the “Heat+hot water” function, you can select “Heat” to force the
unit to rst of all satisfy the system terminal side; by selecting “Hot water”, priority
is given to domestic hot water production. Select the priority, then press “OK” to
conrm.
Note:
1. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, this function
will not be available;
2. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
3. The default value for this parameter is: “Heat“.
4.6 SETTING THE NOISE REDUCTION FUNCTION (QUIET
MODE)
00 00
01 01
02 02
23 59
22 58
Quiet mode
Quiet mode: Timer
Start Timer: 00:00
End Timer: 00:00
After accessing the“Quiet mode” function by clicking on the label, you can change
the value to be assigned to the function. The possible values are:
— “On” = Function active;
— “O” = Function not active;
— “Clock timer” = Function active but in accordance with the time settings pro-
vided;
If you select “Clock timer”, two keys will appear. Use them to set the start and end
of the “Quiet mode” activation period. To set the values, press the time label in
question and set the hours and minutes by sliding the value up or down with your
ngertip (the value highlighted in blue in the middle of the selection window), as
shown in the gure:
00 00
01 01
02 02
23 59
22 58
Quiet mode
Quiet mode: Timer
Start Timer: 00:00
End Timer: 00:00
Note:
1. Every time you press on the label, the value will change. Once you have select-
ed the required value, press the icon to save and implement the setting;
2. The function can still be set if the unit is O, but it will only be implemented if
the unit is activated;
3. When the function is set to “On”, it will automatically be set to “O” if the unit
is switched o manually, whereas the setting will remain valid until the end of
the selected period if the function value is set to “Clock timer”;
4. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
5. The default value for this parameter is: “O“.
4.7 SETTING THE AUTOMATIC SETTING COMPENSATION
ON THE BASIS OF EXTERNAL AIR (WEATHER DEPEND)
1 2
3 4
Weather depend (1/3)
Weather depend: O
Upper AT Heat: 25°C
Lower AT Heat: -20°C
Upper WT Heat: 55°C
Lower WT Heat: 40°C
After accessing the“Weather depend”function, you can set all the parameters relat-
ed to osetting work set-points in accordance with variations in outside air temper-
ature. The following keys are used to navigate this menu:
1. Move back to the previous page;
2. Move on to the next page;
3. Go back to the higher level menu;
4. Go back to the main page (Home).
To activate this function, click on the “Weather depend“ label (the rst item on the
rst page of the function). Select“On”and then conrm with “OK”.
Weather depend
On
O
OK Cancel
Subsequently, the values for the various parameters that make up climatic curves
will be set; these parameters represent the curves that the system will use to
change the set automatically on the delivery temperature or the ambient air tem-
perature (if an air-based control has been set, using the specic accessory air probe)
to both hot and cold:
Lower AT Upper AT
Upper WT
Upper RT
Lower WT
Lower RT
To set values for each parameter to create the climatic curves, click on the label of
the parameter in question and set the desired value using the "+" or "-" keys to en-
11
ter a value within the permitted range. After setting the value, press“OK”to conrm
and return to the higher level;
+- 25°C
Upper AT Heat
Range: 10~37°C Default: 25°C
OK Cancel
Note:
1. The climatic curve can be applied to both the delivery temperature (water
adjustment) and the ambient air (only if the specic air probe supplied has
been installed); you are advised, however, to use the check on the delivery
temperature;
2. The climatic curves can only be applied to heating and cooling, not to domestic
hot water production;
3. The function remains active even when the unit has been switched o. To de-
activate it, set“Weather depend: O manually.”;
4. In the “View” menu, you can see the target value of the climatic curve;
5. The function can still be set if the unit is OFF, but it will only be implemented
if the unit is activated;
6. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
7. The default value for this function is“O”.
4.8 SETTING A TIMER FOR PROGRAMMED SWITCH-ON
AND/OR SWITCH-OFF (WEEKLY TIMER)
Weekly timer
Weekly timer: On
Mon: Valid Tue: Invalid
Wed: Invalid Thur: Invalid
Fri: Invalid Sat: Holiday
Sun: Holiday
After accessing the“Weekly timer” function, you can set up to three time bands for
each single day of the week; during these time bands, the unit will work with the
current mode and set-point. Alternatively, you can assign the“Holiday”value to one
day or more; if the specic“Holiday program“ function is enabled, an operating set-
point of 30°C will be automatically set if you use the check on the delivery water,
or 10°C if you use the ambient air check (installing the specic air probe accessory).
Mon
Mon: Valid
Period 1: Invalid
Period 2: Invalid
Period 3: Invalid
Clicking on the label for one of the days of the week allows access to the page for
that day, where you can assign a value to the day, including:
— “With”= if the Weekly Timer is active, the system will perform the programmed
access as specied in the data for periods 1, 2 and 3;
— “Without” = the Weekly Timer is also active, this day will not be considered;
— “Holiday“ = if the “Holiday release” is active, during this day the set will be kept
at 30°C (for water control) or 10°C (for air control);
00 00
01 01
02 02
23 59
22 58
Period 1
Period 1: Valid
Start Timer: 00:00
End Timer: 00:00
00 00
01 01
02 02
23 59
22 58
Period 1
Period 1: Valid
Start Timer: 00:00
End Timer: 00:00
By clicking on the label for one of the periods during the selected day, you can
access the period settings page. The possible period settings are:
— “With” = the period describes a time band when the unit is to be used;; in this
case, the labels relating to the start and end times for the period will also be
displayed (which will be set rst by clicking on the time label to be set and then
sliding your ngertip over the time values until you select the ones required;
lastly, press the top right button to save the data entered);
— “Without” = the period will not be used;
Note:
— Every time you press on the label, the value will change. Once you have selected
the required value, press the icon to save and implement the setting;
— To make the time settings specied on various days of the week eective, the
Weekly Timer must be set to “On” (by clicking on the Weekly Timer label itself);
— The“With” setting for one or more days of the week validates the specied time
settings only if the Weekly Timer is “On”;
— You can set up to three time bands (periods) for each day; their start and end
times must be coherent (the start of one period must be later than the end of
the previous one);
— If one day or more has been set as “Holiday”, you must activate the “Holiday
release” function (explained in the next paragraph);
— If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored in
the memory and automatically reset after any possible voltage failure;
— The default value for this function is“O”.
12
4.9 ENABLING THE HOLIDAY PROGRAM FUNCTION USED
FOR THE WEEKLY TIMER (HOLIDAY RELEASE)
Holiday release
On
O
OK Cancel
After accessing the “Holiday release” function, you can enable or disable this pro-
gram if applied as a daily setting on one or more days of the weekly timer. Select
the setting, then press“OK”to conrm.
Note:
1. If one day or more is set on“Holiday” in the weekly timer, this function must be
“On” if you want the program specied in the timer to be respected;
2. The default value for this function is“O”.
4.10 ENABLING/DISABLING THE ANTI-LEGIONELLA CYCLE
(DISINFECTION)
After accessing the “Disinfection” function, you can enable or disable this function,
as well as choose the time and day to run it and the temperature to be used:
00 00
01 01
02 02
23 59
22 58
Disinfection
Disinfection: O
Set clock: 23:00
Set temp.: 70°C
Set day: Mon.
WARNING: if the unit is used for domestic hot water production, the Disin-
fection MUST necessarily be used.
Disinfection
Disinfection: O
Set clock: 23:00
Set temp.: 70°C
Set day: Mon.
Min: 40 Max: 70 X
0
1 2 3
4 5 6
7 8
0 -
9OK
Disinfection
Disinfection: O
Set clock: 23:00
Set temp.: 70°C
Set day: Mon.
00 00
01 01
02 02
23 59
22 58
Click on the label relating to the set-point value for the anti-legionella cycle. This
will draw up a numerical keypad, that you can use to alter the set-point (within
the permitted ranges). Bear in mind that to ensure the eectiveness of the cycle,
it will be maintained for a certain duration which will increase when the set value
is decreased.
Note:
1. Every time you press on the label, the value will change. Once you have select-
ed the required value, press the icon to save and implement the setting;
2. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, this function
will not be available;
3. This function can only be activated if the unit is switched o;
4. This function cannot be activated simultaneously with:“Emergen. mode”,“Hol-
iday mode“, “Floor debug“, “Manual defrost“, “Refri. recovery“;
5. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
6. If the anti-legionella cycle is not completed, the unit will produce a message on
the screen to indicate the anomaly. This message can be reset by pressing“OK”;
7. An anti-legionella cycle will automatically be interrupted by any possible com-
munication error or an error linked to the storage tank accessory;
8. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
9. The default value for this function is“O”.
4.11 SETTING A TIMED SWITCH-ON/SWITCH-OFF (CLOCK
TIMER)
Clock timer
Clock timer: O
Mode: Heat
Period: 00:00~00:00
T water tank: 50°C
WOT Heat: 45°C
00 00
01 01
02 02
23 59
22 58
After accessing the“Clock timer” function, you will be able to set all the parameters
needed for a timed start of the unit:
— “Clock timer” = enable or disable the timer;
— “Mode“ = select the mode to be used during the time band (each click changes
the mode);
— “Period“ = access this page to set the start and end time for the time band;
— “T-tank ctrl.“ = set (if the mode so envisages) the set for the domestic hot water
production storage tank;
— “WOT-heat“ = set the value (if envisaged) for the water production set-point
(terminal system side);
13
00 00
01 01
02 02
23 59
22 58
Clock timer
Start timer: 00:00
End timer: 00:00
Click on the“Period”label to open the page with the timer start and end time labels;
set by rst of all clicking on the label of the time you want to set, then sliding your
ngertip over the time values until you select those required. Lastly, press the top
right button to save the data entered.
Click on the labels for parameters with numeric values to be inserted to display a
numeric keypad (with an indication of the range of permitted values) which you can
use to enter the required values:
Clock timer
Clock timer: O
Mode: Heat
Period: 00:00~00:00
T water tank: 50°C
WOT Heat: 45°C
00 00
01 01
02 02
23 59
22 58
Min: 20 Max: 60 X
0
1 2 3
4 5 6
7 8
0 -
9OK
Clock timer
Clock timer: O
Mode: Heat
Period: 00:00~00:00
T water tank: 50°C
WOT Heat: 45°C
Note:
1. If the requested mode is“Hot water”, the “WOT-Cool” or“WOT-heat“ parameter
will not be displayed;
2. Every time you press on the label, the value will change. Once you have select-
ed the required value, press the icon to save and implement the setting;
3. If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) is not installed and correctly set, the references
to hot water production will not be available;
4. If the weekly timer and the standard timer are set at the same time, the weekly
timer takes priority;
5. The timer start must always be prior to the timer end, otherwise the period
will not be valid;
6. The timer for hot water production will only be available if the operating mode
envisages hot water production;
7. The timer function will only work once. If you want to use it again, you must
re-set it;
8. The timer is deactivated if the unit is manually switched on before the timer
start time;
9. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
10. The default value for this function is“O”.
4.12 SETTING PROGRAMMED SETTING CHANGES ON
SYSTEM WATER DELIVERY (TEMP. TIMER)
00 00
01 01
02 02
23 59
22 58
Temp. timer
Temp. timer: O
Period 1: 00:00
WT heat 1: 45°C
Period 2: 00:00
WT heat 2: 45°C
After accessing the “Temp. timer” function, you can set programmed variations of
the water delivery set-point (this set-point will depend on the currently active oper-
ating mode). The function can be activated or deactivated by clicking on the“Temp.
timer”label; click on the“Period 1”label to specify the time at which the water deliv-
ery set-point is to be changed, setting it to the value specied in the “WOT-heat 1”
parameter (which when clicked will display a numeric keypad to change its value).
Set “Period 2” with related “WOT-heat 2” in the same way.
Click on the labels for the delivery temperature parameters to display a numeric
keypad (with an indication of the range of permitted values) which you can use to
enter the required values:
Temp. timer
Temp. timer: O
Period 1: 00:00
WT heat 1: 45°C
Period 2: 00:00
WT heat 2: 45°C
Min: 25 Max: 60 X
0
1 2 3
4 5 6
7 8
0 -
9OK
Temp. timer
Temp. timer: O
Period 1: 00:00
WT heat 1: 45°C
Period 2: 00:00
WT heat 2: 45°C
Note:
1. Press the icon to save and implement the setting;
2. This function is not available if DHW mode is set;
3. To activate this function, the unit must be enabled;
4. The time bands apply to the current day only;
5. If“Weekly timer”,“Preset mode“,“Clock timer”,“Temp. timer“ are set at the same
time, priority is given to the last one of these to be set;
6. The setting is only valid if the unit is“On”;
7. Depending on the operating mode dened (heating or cooling), the relative
set-points will be used;
8. If the start time of “Period 2” is the same as that of “Period 1”, the rst will be
implemented;
9. The time bands are based on the timer inside the unit;
10. During hot water production mode, this function is not available;
14
11. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
12. The default value for this function is“O”.
4.13 ENABLING EMERGENCY OPERATION FOR HEATING OR
DHW (EMERGEN. MODE)
Emergen. mode
On
O
OK Cancel
If the compatible Aermec accessory tank for this model (refer to the installation
manual for more information) - and/or an additional heat source (paragraph
"7.7 Setting the use of an external thermostat (Thermostat) p. 20") or electric
heater (paragraph "7.8Setting an additional heat source (Other thermal)p.20")
- is installed and correctly set on the system, you can enable the“Emergency mode”
function which excludes the heat pump for hot water (domestic or system) pro-
duction, using only the electric heater of the storage tank and/or the additional
heat source (or electric heater) to meet the requests. After accessing the “Emergen.
mode” function, you can enable or disable this program; you must then press “OK”
to conrm.
Note:
1. Emergency mode can only be activated when the unit is OFF, or if the com-
pressor displays an error and, despite a reset, the error resumes and persists
for at least 3 minutes;
2. Emergency mode can only be activated in heating (DHW or Heating, but not
simultaneously);
3. Emergency mode cannot be activated without the installation (and activation)
of the electric heater on the storage tank and/or the additional heat source or
electric heater;
4. The use of Emergency mode (in Heating) will be blocked if the “HP-Water
Switch“, “Auxi. heater 1”, “Auxi. heater 2“, “Temp AHLW“ errors appear;
5. The use of Emergency mode (in DHW) will be blocked if the “Auxi. WTH“ error
appears;
6. None of the functions linked to the timers will be available during Emergency
mode;
7. The thermostat cannot be used in Emergency mode;
8. After a voltage failure, Emergency mode returns to the OFF status;
9. Certain functions are not available in Emergency mode so, if you attempt to
activate them, the system will tell you to disable Emergency mode rst;
10. The default value for this function is“O”.
4.14 SETTING THE WINTER PERIOD ABSENCE FUNCTION
(HOLIDAY MODE)
Holiday mode
On
O
OK Cancel
You can use the weekly timer to assign the “Holiday” program to at least one day
of the week. On those days, the unit will work in heating mode, maintaining a 30°C
set-point on delivery water (or 10°C if the check is based on the ambient air). To
enable the implementation of the Holiday Program (if set on the weekly timer), you
must activate this function.
After accessing the “Holiday mode” function, you can choose one of the modes
available by clicking directly on the text that identies it and then conrming with
the ”OK”key.
Note:
1. Before changing the operating mode, the unit must be OFF, otherwise a mes-
sage will warn you to turn the unit o before changing the mode;
2. During the use of Holiday mode (as set in the weekly timer), the operating
mode will be automatically set on “Heating” and the On/O command from
the panel cannot be used;
3. None of the functions linked to the timers will be available during Holiday
mode;
4. Certain functions are not available in Emergency mode so, if you attempt to
activate them, the system will tell you to disable Emergency mode rst;
5. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
6. The default value for this function is“O”.
15
4.15 SETTING THE DAILY TIMER PROGRAMMING (PRESET
MODE)
Preset mode
Period 1: Valid
Period 2: Invalid
Period 3: Invalid
Period 4: Invalid
This function is used to set one to four daily periods, whose commands will then
be executed every day. After accessing the “Preset mode” function, you can press
the key for each period to activate or deactivate an individual period, choose the
operating mode to be used, the temperature set-point for processed water, and the
start and end times of the period itself.
Preset mode
Period 1: Valid
Mode: Heat
WOT Heat: 45°C
Start timer: 00:00
End timer: 00:00
Clicking on the "Period" label will open the page with the labels relating to period
activation, the mode to be used during the period, the water delivery temperature
and the start and end times. Click on each of these to set the appropriate value
(each data item may draw up additional windows for selecting or entering the re-
quired values). Lastly, press the top right button to save the data entered.
Note:
1. If the compatible Aermec accessory tank for this model (refer to the installa-
tion manual for more information) is not installed and correctly set, the“DHW”
function will not be available;
2. If timer programming with the Weekly timer and other settings with Preset
mode have been entered simultaneously, the latter will take priority;
3. Up to four time bands can be set for each day, but their start and end times
must coherent (the beginning of one period must be later than the end of the
previous period);
4. If the unit is switched on manually, the period timer programs will not be
implemented;
5. If the relative function is activated (paragraph "8.3Activating/deactivating the
memory (On/o memory)p.25"), the value of this parameter will be stored
in the memory and automatically reset after any possible voltage failure;
6. The default value for this function is“O”.
4.16 DELETING CURRENT ERRORS (ERROR RESET)
This function is used to reset any errors active on the system. This operation must
only be performed after having resolved the alarm condition signalled. To reset the
alarms, press on the function label and then conrm with“OK” in the dialogue box;
Note: this function can only be performed if the unit is switched o.
4.17 WIFI CONNECTION RESET FUNCTION (WIFI RESET)
This function is used to reset the WiFi connection, eliminating any conicts.
4.18 LOADING THE DEFAULT SETTINGS (RESET)
This function is used to load the default values (values pre-set in the factory) for all
functions by resetting the changes made by the user.
Note:
1. This function can only be performed if the unit is switched o;
2. This function interacts with the “Temp. timer“, “Clock timer“, “Preset mode“,
“Weekly timer“ and “Weather depend”functions.
16
5 PARAMETER MENU
5.1 NAVIGATING THE MENU
1 2
3 4
Parameter (1/2)
WOT Cool: 18°C
WOT Heat: 20°C
RT Cool: 24°C
RT Heat: 20°C
T water tank: 50°C
This menu is used to set the machine adjustment values. The following keys are
used to navigate this menu:
1. Move back to the previous page;
2. Move on to the next page;
3. Go back to the higher level menu;
4. Go back to the main page (Home).
To access a function, click on the text of that function.
NOTE: while navigating the menu pages, the current page of the selected menu will
be displayed in the header (i.e. in the darker upper area).
5.2 SETTING THE TEMPERATURE SET-POINTS USED BY THE
UNIT IN THE VARIOUS MODES (WOT-COOL~ ΔT-HOT
WATER)
+- 18°C
OK Cancel
WOT Cool
Range: 7~25°C Default: 18°C
The windows of this menu are used to set the values used as a work set for the
various modes. The way in which the values are modied and saved is the same for
all of them: click on the label of the chosen parameter and set the required value
using the "+" or "-" keys, inserting a value within the permitted range. After setting
the value, press“OK”to conrm and return to the higher level.
Note:
1. The windows show the possible range for the selected parameter at the top
left, whereas the value entered during the last modication is shown on the
right;
2. The following table lists all the parameters available, with their functions and
operating ranges;
3. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
Label Meaning Range
WOT-Cool Indicates the work set for cooling mode (used in control based on delivery water) 7~25°C
WOT-heat Indicates the operating set-point for heating mode (used in control based on delivery water) 20~60°C
RT-Cool Indicates the operating set-point for cooling mode (used in control based on ambient air) 18~30°C
RT-Heat Indicates the operating set-point for heating mode (used in control based on ambient air) 18~30°C
T-tank ctrl. Indicates the operating set-point for domestic hot water production (available only if the storage tank accessory is installed and
set) 40~80°C
T-room temp Indicates the value of T to be applied to the set-point when the control is based on ambient air 1~5°C
T-Cool Indicates the value of T to be applied to the set-point for cooling when the control is based on delivery water 2~10°C
T-Heat Indicates the value of T to be applied to the set-point for heating when the control is based on delivery water 2~10°C
T-hot water Indicates the value of T to be applied to domestic hot water production (available only if the storage tank accessory is installed
and set) 2~8°C
17
6 VIEW MENU
6.1 NAVIGATING THE MENU
1 2
VIEW
Status
Parameter
Error
Error log
Version
This menu is used possible to display a great deal of information related to machine
operation. Each label brings together a set of information so that the user can check
the status of the unit and any current errors or faults. The following keys are used
to navigate this menu:
1. Go back to the higher level menu;
2. Go back to the main page (Home).
To access a function, click on the text of that function.
6.2 VIEWING THE STATUS OF THE UNIT COMPONENTS (STATUS)
These pages display the status of the various components in the system. After ac-
cessing the "Status" function, you can browse the various pages using the buttons
on the left and right sides of the window. The following table shows the information
available, and the possible statuses.
NOTE: all information contained in this menu is "read only".
Label Meaning State
Compressor Indicates the current status of the compressor On
O
Fan Indicates the current status of the fan On
O
Unit status Indicates the status of the unit
Cooling
Heating
ACS
O
Circulator Indicates the current status of the fan On
O
Water tank Status of the electric heater in the DHW storage tank On
O
3-way valve 1 Not used --
3-way valve 2 Indicates the status of the 3-way valve on the system On
O
Crankc. heater Indicates the status of the compressor casing heater On
O
HP-heater 1 Indicates the status (for stage 1) of the optional electric heater, if installed (paragraph "7.9Setting an additional heater
(Optional E-heater)p.21")
On
O
HP-heater 2 Indicates the status (for stage 2) of the optional electric heater, if installed (paragraph "7.9Setting an additional heater
(Optional E-heater)p.21")
On
O
Chassis heater Indicates the status of the anti-freeze heater on the unit base On
O
Plate heater Indicates the status of the anti-freeze heater on the plate heat exchanger of the unit On
O
Defrost Indicates the current status of the defrosting cycle On
O
Oil return Indicates the current status of the oil return cycle On
O
Thermostat Indicates the current thermostat settings (paragraph "7.7Setting the use of an external thermostat (Thermostat)p.20")
O
Cooling
Heating
Other thermal Indicates the status of the additional heat source (paragraph "7.8Setting an additional heat source (Other thermal)p.20") On
O
2 way valve Indicates the status of the 2-way valve on the system On
O
HP-Antifree Indicates the status of the anti-freeze protection On
O
External contact Indicates the status of the external contact (paragraph "7.15Activating auxiliary device management (Gate-Ctrl)p.23") Card in
Card out
4-way valve Indicates the status of the 4-way valve on the unit On
O
Anti-legionella Indicates the current status of the anti-legionella cycle (paragraph "4.10Enabling/disabling the anti-legionella cycle
(Disinfection)p.12")
O
Progess
Done
Error
Flow switch Indicates the current status of the ow switch on the unit On
O
18
6.3 VIEWING THE STATUS OF THE UNIT PARAMETERS (PARAMETER)
These pages display the current values for the unit's operating parameters. After
accessing the "Parameters" function, you can browse the various pages using the
buttons on the left and right sides of the window. The following table shows the
information available.
NOTE: all information contained in this menu is "read only".
Label Meaning
T-outdoor Indicates the external air temperature detected by the unit
T-suction Indicates the temperature on the compressor inlet
T-discharge Indicates the compressor delivery temperature
T-Defrost Indicates the temperature for the defrosting cycle
T-water in PE Indicates the temperature of the water entering the plate heat exchanger
T-water out PE Indicates the temperature of the water leaving the plate heat exchanger
T-optional water sen. Indicates the temperature of the water leaving the optional heater (paragraph "7.9Setting an additional heater (Optional
E-heater)p.21")
T-tank ctrl. Indicates the temperature measured in the compatible Aermec accessory tank
T-economizer in Indicates the temperature on the economiser inlet
T-economizer out Indicates the temperature on the economiser outlet
T-oor debug Indicates the set temperature for radiant oor debug (paragraph "7.12Setting the pre-heating procedure for radiant panels
(Floor debug)p.22")
Debug time Indicates the set time for radiant oor debug (paragraph "7.12Setting the pre-heating procedure for radiant panels (Floor
debug)p.22")
T-gas pipe Indicates the temperature detected on the gas side of the cooling circuit
T-liquid pipe Indicates the temperature detected on the liquid side of the cooling circuit
T-auto mode Indicates the current set-point temperature, calculated using the climatic curve (paragraph "4.7Setting the automatic setting
compensation on the basis of external air (Weather depend)p.10")
T-remote room Indicates the room temperature detected by the probe (paragraph "7.10Setting the installation of the remote room
temperature probe (Ambient sensor)p.22")
Dis. pressure Indicates the compressor delivery pressure value
6.4 VIEWING THE ACTIVE ERRORS ON THE UNIT (ERROR)
These pages display the current errors and alarms active on the unit. After accessing
the "Error" function, you can browse any pages using the buttons on the left and
right sides of the window;
Note:
1. This function does not allow current errors to be reset; it only displays them;
2. For more information about the error codes, refer to chapter "9 Alarm
codesp.27";
3. There may be several pages, depending on the number of errors (up to 5 errors
per page).
6.5 VIEWING THE ERROR LOG (ERROR LOG)
These pages display the alarm log for the unit. After accessing the "Error" function,
you can browse any pages using the buttons on the left and right sides of the win-
dow;
Note:
1. There may be several pages, depending on the number of errors; the log lists
the last 20 errors;
2. For more information about the error codes, refer to chapter "9 Alarm
codesp.27";
6.6 VIEWING SOFTWARE INFORMATION (VERSION)
These pages display the version of the software installed on the unit.
19
7 COMMISSION MENU
7.1 NAVIGATING THE MENU
WARNING: these functions and parameters must only be set and/or mod-
ied by authorised personnel with the necessary technical skills to install
and maintain these units. Incorrect settings may lead to malfunctioning or
damage to the unit and the system!
Commission
Function Param.
This menu is used to make the settings needed for correct unit operation: the logics,
the components installed on the system and the accessories envisaged for each
installation will be set using the functions in this menu.
The information in the menu is sub-divided into two large macro groups:
— “Function“ (containing the settings and any functions needed for unit opera-
tion);
— “Parameter“ (containing the general operating parameters);
1 2
3 4
Function (1/4)
Ctrl. state: T water out
Cool 2 way valve: On
Heat 2 way valve: O
Solar setting: Without
Water tank: With
1 2
3 4
Parameter (1/1)
T HP max: 50°C
Cool run time: 5 min
Heat run time: 3 min
To navigate the“Function”or “Parameter“ sub-menu, use the following keys:
1. Move back to the previous page;
2. Move on to the next page;
3. Go back to the higher level menu;
4. Go back to the main page;
To access a function, click on the text of that function.
NOTE: if the relative function is activated (paragraph "8.3Activating/deactivating
the memory (On/o memory)p.25"), the value of these parameters will be stored
in the memory and automatically reset after any possible voltage failure.
7.2 SETTING THE CONTROL LOGIC (CTRL.STATE)
Ctrl. state
T room
T water out
OK Cancel
After accessing the “Ctrl.state” function, you can choose whether to base the unit
control logic on the processed water temperature or on the ambient air temper-
ature (if the air probe accessory is installed and correctly set). Select the required
logic, then press“OK”to conrm.
NOTE:
1. If the ambient air probe accessory is not installed (and correctly set), you can
only choose “T-water out”;
2. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
7.3 SETTING THE STATUS OF THE 2-WAY VALVE IN
COOLING MODE (COOL 2-WAY VALVE)
Cool 2 way valve
On
O
OK Cancel
After accessing the“Cool 2-Way valve”function, you can set the status of the 2-way
valve in cooling mode (for more information about the assembly and use of the
2-way valve, refer to the installation manual). Select the required logic, then press
“OK”to conrm.
NOTE:
1. If you select the “O” status, the valve will be CLOSED in cooling mode; it will
be OPEN if you select “On”;
2. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
20
7.4 SETTING THE STATUS OF THE 2-WAY VALVE IN
HEATING MODE (HEAT 2-WAY VALVE)
On
O
OK Cancel
Heat 2 way valve
After accessing the“Heat 2-Way valve”function, you can set the status of the 2-way
valve in heating mode (for more information about the assembly and use of the
2-way valve, refer to the installation manual). Select the required logic, then press
“OK”to conrm.
NOTE:
1. If you select the “O” status, the valve will be CLOSED in heating mode; it will
be OPEN if you select “On”;
2. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
7.5 SETTING SOLAR SYSTEM INTEGRATION (SOLAR
SETTING)
Function currently NOT AVAILABLE.
WARNING: this function is not currently available, so its setting must nec-
essarily be “Without”.
7.6 SET THE INSTALLATION OF A COMPATIBLE AERMEC
ACCESSORY TANK (DHW TANK)
Water tank
With
Without
OK Cancel
After accessing the "Water tank" function, you can specify whether the DHW stor-
age tank accessory is installed in the system (for more information about the as-
sembly and use of the DHW storage tank accessory, refer to the installation manu-
al). Make your selection, then press“OK” to conrm.
NOTE:
1. If the compatible Aermec accessory tank is not installed, operating modes in-
volving DHW production will NOT be available.
2. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
7.7 SETTING THE USE OF AN EXTERNAL THERMOSTAT
(THERMOSTAT)
Thermostat
Air
Air + hot water
Without
OK Cancel
After accessing the "Thermostat" function, you can specify which type of manage-
ment to apply to a hypothetical external thermostat (for more information about
the assembly and use of an external thermostat, refer to the installation manual).
Make your selection, then press“OK” to conrm.
NOTE:
1. The available options depend on the settings associated with the production
of domestic hot water (presence of a compatible Aermec accessory tank, etc.);
2. To change the thermostat settings, the unit must be switched O;
3. If the “Floor debug” or “Emergen. mode“ function is active, the external ther-
mostat cannot be used;
4. If the use of an external thermostat is activated, the commands for changing
the operating mode or for switching the unit on/o from the control panel will
not be available;
5. If the external thermostat is set for “Cool+hot water”, and the unit is “O” be-
cause of the thermostat, any requests from the DHW side will be met automat-
ically by the unit, even though the display does not show the “On” status (but
you can still see the values in the parameters menu while the unit is working);
6. To pass from one setting value to the other, rst of all select “Without“;
7. If a unit on which the thermostat has been installed and set is disabled, the unit
will automatically be switched O;
8. If the relative function is activated (paragraph "8.3 Activating/deactivating
the memory (On/o memory) p. 25"), the value of these parameters will
be stored in the memory and automatically reset after any possible voltage
failure.
7.8 SETTING AN ADDITIONAL HEAT SOURCE (OTHER
THERMAL)
Other thermal
Other thermal: With
T Other switch on: -20°C
Logic: 1
After accessing the "Additional heat source" function, you can activate or deactivate
the substitute heat source and set the outdoor temperature threshold below which
it will be activated in place of the heat pump; you can also dene the logic for man-
aging the substitution. The available logic items are:
Logic 1
With this logic, the 2-way valve is managed on the basis of the control panel set-
tings; the operating modes will therefore be managed when the temperature
measured by the outside air probe is lower than the "Additional heat source temp."
parameter:
— Heating: the unit (and its circulator) will not be active, the 3-way valve will be
blocked on the system side, and the additional heat source will be activated;
once the set value has been reached, the additional heat source will be deacti-
vated and the unit will activate its circulator.
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