Use manual
System controller
for modulating absorption methane condensing heat pump +
renewable aerothermal energy K18
Revision: A
Code: D-LBR771
This manual has been drawn up and printed by Robur S.p.A.; whole or partial reproduction of this manual is
prohibited.
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aected.
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data and contents of this manual without prior notice.
Use manual – System controller
3
INDEX OF CONTENTS
1 PREFACE �����������������������������������������������������������4
2 WARNINGS AND GENERAL INFORMATION
��������������������������������������������������������������������������� 4
2.1 Warnings .................................................................................4
2.2 General information ............................................................4
3 USER INSTRUCTIONS: QAA75�611 ROOM
UNIT ������������������������������������������������������������������6
3.1 Legend of commands ........................................................6
3.2 Display symbols .................................................................... 6
3.3 Selecting the heating mode ............................................7
3.4 Modifying the room temperature setpoint ................ 7
3.5 Occupancy button ...............................................................8
3.6 Selecting the DHW mode .................................................8
3.7 Information display .............................................................8
4 USER INSTRUCTIONS: QAA55�110 ROOM
UNIT ������������������������������������������������������������������9
4.1 Legend of commands ........................................................9
4.2 Display symbols .................................................................... 9
4.3 Selecting the heating mode ......................................... 10
4.4 Modifying the room temperature setpoint ............. 11
4.5 Occupancy button ............................................................ 11
5 PARAMETERS AND SETTINGS ���������������������11
5.1 Programming ..................................................................... 11
5.2 Language ............................................................................. 13
5.3 Date and time ..................................................................... 13
5.4 Time programs ................................................................... 13
5.5 Holiday programs ............................................................. 15
5.6 Heating circuit settings ................................................... 16
5.7 DHW system settings ....................................................... 17
6 ERRORS ����������������������������������������������������������18
6.1 Error list ................................................................................. 18
6.2 System controller error handling ................................ 19
6.3 K18 error handling ............................................................ 19
1 Preface
4
1 PREFACE
This User Handbook is a guide to the use and conguration of
the K18 system controller. The system controller consists of an
electrical enclosure (CSK18), generally installed in a machine
room, with an included room unit, and at most two other op-
tional room units which can be added to improve comfort con-
trol when the heating system consists of two or three separate
heating circuits, or two or three zone valves.
This handbook assumes that you are familiar with the
products Robur and information contained in the
equipment's respective installation, user and mainte-
nance manuals.
This manual is specically intended for:
▶
for end users for the operation of the appliance according to
their own requirements;
▶
for installers of the water and electrical circuits, as a supple-
ment to the K18 system controller installation manual (and
the KECSK18 system controller expansion kit installation
manual, if applicable).
Glossary
DHW domestic hot water.
HC heating circuit
HC1 or C1 Heating circuit 1 (with/without mixer valve)
HC2 or C2 Heating circuit 2 (with/without mixer valve)
HC3 or C3 Heating circuit 3 (without mixer valve)
References
Further information can be found in the following documents:
K18 system controller installation manual (D-LBR770).
KECSK18 system controller expansion kit installation
manual (D-LBR772).
K18 installation, user and maintenance manual
(D-LBR687).
The icons in the edge of the manual have the following meanings:
Danger symbol
Warning
Note
Start of procedure
Reference to another part of the handbook or other
manual/handbook
2 WARNINGS AND GENERAL INFORMATION
2�1 WARNINGS
This manual is an integral and essential part of the product and
must be delivered to the user together with the appliance.
Safety
The appliance must only be used for the purposes for
which it has been designed. Any other use is considered
inappropriate and therefore dangerous. The manufac-
turer does not accept any contractual or extra-contrac-
tual liability for any damage caused by improper use of
the appliance.
Failure to observe the above instructions can compro-
mise the safety of the appliance and voids the Robur
warranty
Do not operate the appliance if any dangers are present:
mains power problems; parts of the appliance ooded
or damaged in any way; control and safety equipment
tampered with or malfunctioning. In these cases, con-
tact a professional technician for assistance.
Packaging (plastic bags, polystyrene foam, etc.) must be
kept out of the reach of children, as they are potentially
dangerous.
2�2 GENERAL INFORMATION
Fig. 2.1 p. 5 shows the equipment of the K18 system
controller.
2 Warnings and general information
Use manual – System controller
5
Figure 2�1 – K18 system controller components
LEGEND
A QAC34 external temperature sensor
B CSK18 enclosure
C Room unit 1 (QAA75.611)
D Room unit 2 (Optional - QAA55.110, shown, or QAA75.611)
E Room unit 3 (Optional - QAA55.110, shown, or QAA75.611)
P K18 fault reset button
3 User instructions: QAA75.611 room unit
6
3 USER INSTRUCTIONS: QAA75�611 ROOM UNIT
3�1 LEGEND OF COMMANDS
Figure 3�1 – QAA75.611 room unit
Description of QAA75.611 room unit controls
3�2 DISPLAY SYMBOLS
Table 3�1 – Symbols shown on the display
Current heating mode: Comfort setpoint
Current heating mode: Reduced setpoint
Current heating mode: Anti-icing protection setpoint
Processing – please wait
Holiday program active
Indicates that the data on the display refer to heating circuit 1, 2 or 3, depending on the digit to the left or right of the symbol.
Special mode / Maintenance
Error message
Protection mode
INFO Info level active
PROG Programming active
ECO Heating system inactive, summer mode
Indicates that the heat pump is running
Indicates that the supplementary heater (e.g. boiler) is running
LEGEND
A - DHW function control
B - Heating mode selection
C - Information
D - Conrm setting
F - Not used
G - Modify room comfort setpoint - Browse and set
parameters
H - Cancel parameter setting - Quit menu
L - Occupancy button
3 User instructions: QAA75.611 room unit
Use manual – System controller
7
Figure 3�2 – Display
When it powers on, the display shows all segments for a few seconds
3�3 SELECTING THE HEATING MODE
Press, multiple times
if necessary, key B (g. 3.1 p. 6) to select the heating mode.
The selected mode displays with a hyphen under the respective
symbol.
If multiple heating circuits are present (two or three),
congured with a single room unit (factory setting),
when you rst press the button you are prompted to
select which circuit you wish to congure; if so:
1. Turn knob G (g. 3.1 p.6) to select heating circuit
1, 2 or 3.
2. Press OK (D in g. 3.1p.6) to conrm.
3. Press, multiple times if necessary, key B (g.
3.1p.6) to set the heating mode.
Automatic mode
Automatic mode maintains the room temperature at the com-
fort or reduced level, depending on the time program.
Characteristics of automatic mode:
▶
Comfort or reduced heating mode, depending on time pro-
gramming.
▶
Anti-icing protection functions active.
▶
Automatic summer/winter mode switching (ECO functions)
and 24 hour daily heating limit enabled.
▶
Current heating mode (depending on time program):
Comfort
▶
Current heating mode (depending on time program):
Reduced
▶
or
continuous mode
Continuous mode always maintains the comfort or reduced
room temperature
▶
Comfort mode heating
▶
Reduced mode heating
Characteristics of continuous mode:
▶
Constant heating mode, does not follow the time program-
ming.
▶
Anti-icing protection functions active.
▶
Continuous operation in Comfort mode: automatic sum-
mer/winter mode switching (ECO functions) and 24 hour
daily heating limit disabled (i.e. heating remains active, the
said functions have no eect).
Anti-icing protection mode
Protection mode maintains the room temperature at the (con-
gurable) Anti-icing protection level.
Characteristics of protection mode:
▶
Constant heating mode at the anti-icing protection setpoint.
▶
Anti-icing protection functions active.
▶
Automatic summer/winter mode switching (ECO functions)
and 24 hour daily heating limit enabled.
3�4 MODIFYING THE ROOM TEMPERATURE
SETPOINT
Knob G (g. 3.1p.6)
Figure 3�3 – Setpoint knob
Modifying the comfort setpoint
Turn the knob to increase the setpoint (CW) or reduce it (CCW).
Conrm by pressing OK.
If multiple heating circuits are present (two or three),
congured with a single room unit (factory setting),
when you rst turn the knob you are prompted to select
which circuit you wish to congure; if so:
1. Turn the knob to select heating circuit 1, 2 or 3.
2. Press OK to conrm.
3. Turn the knob to set the setpoint value
4. Press OK to conrm.
Modifying the reduced setpoint
The reduced setpoint can only be adjusted in programming
mode. Proceed as follows. For further information, refer to sec-
tion 5p�11
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
3 User instructions: QAA75.611 room unit
8
2. Press OK.
3. Turn the knob to select the “Heating circuit 1”, “ Heating
circuit 2” or “Heating circuit 3” menu, depending on which
circuit you want to congure.
4. Press OK.
5. Turn the knob clockwise to select “Reduced setpoint”
6. Press OK.
7. Turn the knob to set the value
8. Press OK to conrm.
9. Press ESC twice to go back to the start screen.
3�5 OCCUPANCY BUTTON
If, during heating in comfort mode,
the rooms are unoccupied for a period of time, you can press the
occupancy key L (g. 3.1p.6) to switch to reduced mode and
save heating costs.
When the rooms are occupied again, simply press the key once
more to restore normal comfort mode heating.
In the same way, press the key once when in reduced mode to
switch to comfort mode and press it again to restore reduced
mode.
The occupancy key is only active in automatic mode.
The setting applied by pressing the occupancy key re-
mains active until the next change in heating mode set
in the time program. For example, if you press the oc-
cupancy key while the system is in comfort mode, thus
switching to reduced mode, the system will automati-
cally return to comfort mode the next time the time pro-
gram switches from reduced to comfort mode.
If multiple heating circuits (two or three) are present,
congured to a single room unit (factory setting), the
occupancy key eects all circuits.
3�6 SELECTING THE DHW MODE
DHW mode
Press key A (g. 3.1 p. 6), multiple
times if necessary, to set activation (two modes) or deactivation
of the DHW production system. System activation is indicated
on the display by one or two hyphens under the
symbol.
DHW mode
▶
On (two hyphens): the system produces DHW at the DHW
comfort setpoint, over the 24 hours or during the periods set
in the DHW time program, if active; in the latter case, DHW is
held at the DHW reduced setpoint for the remainder of the
time.
▶
Eco On (one hyphen): the system produces DHW at the DHW
reduced setpoint over the 24 hours.
▶
O (no hyphen): the system does not produce DHW, but the
anti-icing protection function for the buer tank is active.
DHW forced charging function
This function forces a single charging cycle to prepare DHW at
the DHW comfort setpoint.
The function can be activated independently of the DHW mode
setting.
To activate the function, press and hold down the DHW mode
button until the message DHW charging on displays temporar-
ily to conrm initiation of the charging cycle.
Activating this function does not modify the DHW mode
setting; when the single charging cycle terminates, the
current DHW mode resumes.
3�7 INFORMATION DISPLAY
Pressing the Info key ( ) (C in g. 3.1p.6) start-
ing from the start screen, displays the system's status and oper-
ating data.
If you are not sure that the display is showing the start
screen, press ESC twice before pressing Info ( ).
If the system has a fault, as indicated by the symbol
on the
start screen, the rst data displayed when you press Info ( ) is
the fault code and description (g. 3.4p.8).
Figure 3�4 – Fault code and description in the Information
screen
If a fault is present, refer to SECTION 6p.18.
Pressing Info ( ) repeatedly displays:
▶
Room temperature read by room unit 1
▶
Room temperature read by room unit 2 (if present)
▶
Room temperature read by room unit 3 (if present)
▶
Heat pump status
▶
Supplementary heater status (auxiliary boiler)
▶
Stato ACS
▶
4 User instructions: QAA55.110 room unit
Use manual – System controller
9
▶
Heating circuit 1 status
▶
Heating circuit 2 status
▶
Heating circuit 3 status
▶
External temperature
▶
Heating circuit 1 room setpoint
▶
Heating circuit 1 outlet temperature / heating circuit 1 outlet
setpoint 1 (1)
▶
Heating circuit 2 room setpoint, if present
▶
Heating circuit 2 outlet temperature / heating circuit 2 outlet
setpoint, if present (1)
▶
Heating circuit 3 room setpoint, if present
▶
Heating circuit 3 outlet setpoint, if present (1)
▶
DHW tank temperature, if present
▶
Stage 1 O remaining min. (not used in the application, in-
dicated with - - -)
▶
Stage 1 On remaining min. (not used in the application, in-
dicated with - - -)
(1) The circuit 1 and 2 outlet temperature is indicated only
if the circuits are of the mixed type; circuit 3 is always of the
not mixed type�
The outlet setpoint only displays if the circuit is requesting
heat.
Continuing to press Info ( ) cycles through the data.
To return to the start screen, press ESC.
4 USER INSTRUCTIONS: QAA55�110 ROOM UNIT
4�1 LEGEND OF COMMANDS
Figure 4�1 – QAA55.110 room unit
A
B
C
Description of QAA55.110 room unit keys
4�2 DISPLAY SYMBOLS
Table 4�1 – Display symbols
Current heating mode: Comfort setpoint
Current heating mode: Reduced setpoint
Error message
LEGEND
A - Heating mode selection
B - Modify room comfort setpoint
C - Occupancy button
4 User instructions: QAA55.110 room unit
10
Figure 4�2 – Display
When it powers on, the display shows all segments for a few seconds
4�3 SELECTING THE HEATING MODE
Press, multiple times
if necessary, key A (g. 4.1 p. 9) to select the heating mode.
The selected mode displays with a hyphen under the respective
symbol.
In contrast with the QAA75.611 room unit, the
QAA55.110 unit is always associated with a single heat-
ing circuit and hence its settings apply only to that
circuit. In the K18 system controller, this type of room
unit is optionally used to control the second and third
heating circuit (if present); in this case, the included
QAA75.611 room unit is associated only with the rst
heating circuit during installation and commissioning.
It follows that in this case the direct settings (i.e. those
not made in programming mode) described in par.
3�3 p� 7, 3�4 p� 7 and 3�5 p� 8 apply solely to
the rst heating circuit.
However, you can also change all settings for the second
and third heating circuits with the included QAA75.611
room unit in programming mode.
Automatic mode
Automatic mode maintains the room temperature at the com-
fort or reduced level, depending on the time program.
Characteristics of automatic mode:
▶
Comfort or reduced heating mode, depending on time pro-
gramming.
▶
Anti-icing protection functions active.
▶
Automatic summer/winter mode switching (ECO functions)
and 24 hour daily heating limit enabled.
▶
Current heating mode (depending on time program):
Comfort
▶
Current heating mode (depending on time program):
Reduced
or
continuous mode
Continuous mode always maintains the comfort or reduced
room temperature
▶
Comfort mode heating
▶
Reduced mode heating
Characteristics of continuous mode:
▶
Constant heating mode, does not follow the time program-
ming.
▶
Anti-icing protection functions active.
Continuous operation in Comfort mode: automatic summer/
winter mode switching (ECO functions) and 24 hour daily heat-
ing limit disabled (i.e. heating remains active, the said functions
have no eect).
Protection mode
Protection mode maintains the room temperature at the (con-
gurable) Anti-icing protection level.
Characteristics of protection mode:
▶
Constant heating mode at the anti-icing protection setpoint.
▶
Anti-icing protection functions active.
▶
Automatic summer/winter mode switching (ECO functions)
and 24 hour daily heating limit enabled.
5 Parameters and settings
Use manual – System controller
11
4�4 MODIFYING THE ROOM TEMPERATURE
SETPOINT
Knob B (g. 4.1p.9)
Figure 4�3 – Setpoint knob
Modifying the comfort setpoint
Turn the knob to increase the setpoint (CW) or reduce it (CCW).
Conrm by pressing OK.
Modifying the reduced setpoint
The reduced setpoint can only be modied in programming
mode on a QAA75.611 room unit, as described in par. 3�4p�7.
4�5 OCCUPANCY BUTTON
If, during heating in comfort mode,
the rooms are unoccupied for a period of time, you can press the
occupancy key C (g. 4.1p.9) to switch to reduced mode and
save heating costs.
When the rooms are occupied again, simply press the key once
more to restore normal comfort mode heating.
In the same way, press the key once when in reduced mode to
switch to comfort mode and press it again to restore reduced
mode.
The occupancy key is only active in automatic mode.
The setting applied by pressing the occupancy key re-
mains active until the next change in heating mode set
in the time program. For example, if you press the oc-
cupancy key while the system is in comfort mode, thus
switching to reduced mode, the system will automati-
cally return to comfort mode the next time the time pro-
gram switches from reduced to comfort mode.
5 PARAMETERS AND SETTINGS
Par. 5.1p.11 describes how to set parameters with the user in-
terface of the QAA75.611 room unit, and illustrates an example
conguration procedure graphically.
The following paragraphs detail the main user-congurable
parameters.
5�1 PROGRAMMING
Settings which cannot be done directly with the room unit's
knob and keys are done by means of programming.
To display and modify the parameters of the system controller,
proceed as follows:
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK on the room unit; this displays the list of menus.
3. Turn the knob to select the menu, then press OK to display it.
4. Turn the knob to select the parameter you wish to view/
modify; the display shows its current value.
5. To modify the value, press OK; the displayed value will start
ashing.
▶
Turn the knob to select the desired value.
▶
Press OK to conrm it, or
▶
Press ESC to abort the change.
6. If you want to view and modify other parameters in the same
menu, turn the knob to display them; modify them as ex-
plained in point 5.
7. Once you have nished viewing and modifying the param-
eters of a given menu, press ESC to go back to the list of
menus.
8. To access other menus, repeat steps 3 to 7 for each menu in
question.
9. Once you have nished working with the menus, press ESC
to return to the start screen.
If you do nothing for 8 minutes the device will
automatically return to its start screen.
We illustrate below a sample setting: setting the time.
5 Parameters and settings
12
Select the “Time of day and date” menu
Figure 5�1 – The display shows the time/date setting menu
LEGEND
Press OK (in the start menu), the display will show a list of menus.
Turn the knob until the Time of day and date menu displays.
Press OK to access the menu.
Select parameter: “Hours / minutes”
Figure 5�2 – The display shows the hours and minutes for
modication
LEGEND
The bottom of the screen displays the rst parameter in the Time of day and
date menu.
Turn the knob until the parameter Hours / minutes displays.
Press OK to select the parameter.
Modify the hour
Figure 5�3 – The display shows the hours, ashing
LEGEND
The display shows the hours, ashing
Turn the knob to set the hours.
Press OK to conrm.
Modify the minutes
Figure 5�4 – The display shows the minutes, ashing
LEGEND
The display shows the minutes, ashing
Turn the knob to set the minutes.
Press OK to conrm.
Hours and minutes modied
Figure 5�5 – The display shows the set time
LEGEND
The settings have been saved. The display stops ashing.
Turn the knob to display the Day / month and Year parameters; to set them,
proceed in the same way. After making the settings, press ESC once to return to
the list of menus, and again to go back to the start screen.
5 Parameters and settings
Use manual – System controller
13
5�2 LANGUAGE
To set the language, proceed as follows:
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK on the room unit; this displays the list of menus.
3. Turn the knob to select the Operator section menu.
4. Press OK to access the menu.
5. Parameter 20 (Language) displays; to adjust it:
▶
press OK, the current language, at the bottom right
of the screen, starts ashing;
▶
turn the knob to select your language;
▶
press OK to conrm; the new language selection dis-
plays without ashing.
6. Press ESC once to return to the list of menus, and again to
return to the start screen.
5�3 DATE AND TIME
The controller has an annual clock with the following main
characteristics:
▶
Automatic leap year adjustment
▶
Automatic switching between summer and winter time
▶
Backup charge to handle temporary power faults
To use the time programs and holiday programs, the
date and time must be set correctly.
The switch from winter to summer time happens at
02:00 of the last Sunday of March (at 02:00 the timer is
automatically set to 03:00); the switch from summer to
winter time happens at 03:00 of the last Sunday of Octo-
ber (at 03:00 the timer is set back to 02:00).
To set the date and time, proceed as follows (this procedure is
also given as an example with illustrations in par. 5.1p.11):
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK on the room unit; this displays the list of menus.
3. Turn the knob to select the Time of day and date menu.
4. Press OK to access the menu.
5. Parameter 1 (Hours / minutes) displays; to adjust it:
▶
press OK, the two leftmost digits (hours) start
ashing;
▶
turn the knob to set the hours;
▶
press OK to conrm; the new value of the hours dis-
plays without ashing, while the two right most dig-
its (minutes) start ashing;
▶
turn the knob to set the minutes;
▶
press OK to conrm; the new time (hours and min-
utes) displays without ashing
6. Turn the knob to select parameter 2 (Day / month); to adjust
it:
▶
press OK, the two leftmost digits (month) start
ashing;
▶
turn the knob to set the month;
▶
press OK to conrm; the new value of the month
displays without ashing, while the two right most
digits (day) start ashing;
▶
turn the knob to set the day;
▶
press OK to conrm; the new month and day display
without ashing.
7. Turn the knob to select parameter 3 (Year); to adjust it:
▶
press OK, the year digits start ashing;
▶
turn the knob to set the year;
▶
press OK to conrm; the new year value displays
without ashing.
Once you have set the date and time, press ESC to return to the
list of menus; you can now make other settings, or press ESC
again to go back to the start screen.
Table 5.1p.13 lists the codes of the parameters used to set the
date and time.
Table 5�1 – Date and time setting parameter codes
Parameter code Description of parameter
1
Hours/minutes
HH:MM
2
Day/month
DD:MM
3
Year
YYYY
5�4 TIME PROGRAMS
The heating circuits (or zones) and DHW system (if present) each
have their own dedicated weekly time program.
As described in par. 3�3 p� 7 and 4�3 p� 10, the time pro-
gram associated with a given heating circuit is activated when
automatic mode is selected for the circuit in question.
For the DHW system, you can activate/deactivate the time pro-
gram, but this can only be done by a TAC. The factory setting has
this time program inactive (DHW comfort setpoint maintained
all 24 hours). Even modications to the DHW reduced setpoint
(factory set to 45.0 °C) must be done by the TAC.
Each time program enables you to set up to 3 periods of opera-
tion with the comfort setpoint for each day of the week; outside
these periods, the system maintains the reduced setpoint. The
factory setting for the heating circuit time programs provides,
for each day of the week, a period using the comfort setpoint
from 6:00 to 22:00; the DHW time program (when activated by
the TAC) has two periods with the comfort setpoint: from 00:00
to 5:00 and 17:00 to 21:00.
These settings can be changed as follows:
Heating circuit 1 time program
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK on the room unit; this displays the list of menus.
3. Turn the knob to select the Time prog heating/cooling 1
menu.
4. Press OK to access the menu.
5. Parameter 500 (Preselection) displays, the value of which
indicates the days of the week for which the following set-
tings will apply; you can set the values:
Mo - Su to set all days of the week to the same settings
Mo - Fr to set all working days to the same settings
Sa - Su to set the weekend days to the same settings
Mo, Tu, We, Th, Fr, Sa, Su to program the days
individually.
To modify the initial setting (Mo - Su):
▶
press OK, the parameter's value will start ashing:
▶
turn the knob to set the value;
▶
press OK to conrm; the new preselection value will
display without ashing at the bottom right; the fol-
lowing settings will apply to the days in question
5 Parameters and settings
14
6. Turn the knob to select parameter 501 (1st period on) the
value of which indicates the start time (hours and minutes)
of the rst daily period with the comfort setpoint; to modify
this value:
▶
press OK, the parameter's value will start ashing:
▶
turn the knob to set the value:
▶
press OK to conrm; the new value displays without
ashing at the bottom right.
7. Turn the knob to select parameter 502 (1st period o) the
value of which indicates the end time (hours and minutes)
of the rst daily period with the comfort setpoint; to modify
this value:
▶
press OK, the parameter's value will start ashing:
▶
turn the knob to set the value:
▶
press OK to conrm; the new value displays without
ashing at the bottom right.
8. If you need to set a second daily period with the comfort set-
point, proceed as indicated in steps 6 and 7 to set the value
of parameters 503 (2nd period on) and 504 (2nd period
o).
9. If you need to set a third daily period with the comfort set-
point, proceed as indicated in steps 6 and 7 to set the value
of parameters 505 (3rd period on) and 506 (3rd period o).
10. If you need to program other days of the week, turn the knob
to select 500 (Preselection) again and proceed as indicated
in step 5 to set a new value; then repeat steps 6 and 7 as
many times as required to set one or more daily periods with
the comfort setpoint for the days of the week in question.
An inactive period is indicated by hyphens ( - -:- - ) in
place of the time (hours and minutes) for the respective
“Period on” and “Period o” parameters. To set a pa-
rameter to the disabled setting, turn the knob clockwise
until the hyphens display.
You can also copy all programming of a given preselec-
tion of days of the week, excepting Mo - Su, to specic
days of the week, using parameter 515 (Copy):
▶
set parameter 500 (Preselection) to the days of the
week you wish to copy, as described in steps 1 – 5
above.
▶
turn the knob to select parameter 515 (Copy)
▶
press OK, the parameter's value will start ashing
▶
turn the knob to set the day of the week to copy the
values from the preselected days of the week to.
▶
press OK to conrm; all the programming of the pre-
selected day/s of the week will be copied to that day.
Once you have nished setting the time program parameters for
heating circuit 1, press ESC to return to the list of menus; you can
now congure other time programs, or press ESC again to return
to the start screen.
Heating circuit 2 and 3 time programs, and DHW system
time program (if present)
These programs are set in the same way as for heating circuit 1,
with the following dierences:
▶
In step 3, select the menu:
▶
Time prog heating/cooling 2
▶
Time prog heating/cooling 3
▶
Time program 4/DHW
depending on the time program you wish to set.
▶
For the rest of the procedure, refer to table 5.2p.15 for the
parameter codes.
if the Time program 4/DHW is not displayed, this
means that the DHW time program is deactivated (fac-
tory setting, comfort setpoint maintained through-
out 24 hours); contact the TAC to have it activated if
necessary.
Once you have nished setting the time program parameters,
press ESC to return to the list of menus; you can now congure
other time programs, or press ESC again to go back to the start
screen.
5 Parameters and settings
Use manual – System controller
15
Table 5�2 – Time program parameter codes
Parameter code Description of parameter
HC1 HC2 HC3 4/DHW
500 520 540 560
Preselection
Mo – Su / Mo – Fr / Sa – Su / Mo / Tu / We / Th / Fr / Sa / Su
501 521 541 561
1st period On
HH:MM [factory setting: HC1, HC2, HC3: 06:00; DHW: 00:00]
502 522 542 562
1st period O
HH:MM [factory setting: HC1, HC2, HC3: 22:00; DHW: 05:00]
503 523 543 563
2nd period On
HH:MM [factory setting: HC1, HC2, HC3: - -:- -; DHW: 17:00]
504 524 544 564
2nd period O
HH:MM [factory setting: HC1, HC2, HC3: - -:- -; DHW: 21:00]
505 525 545 565
3rd period On
HH:MM [factory setting: HC1, HC2, HC3, DHW: - -:- -]
506 526 546 566
3rd period O
HH:MM [factory setting: HC1, HC2, HC3, DHW: - -:- -]
515 535 555 575
Copy
Mo / Tu / We / Th / Fr / Sa / Su
5�5 HOLIDAY PROGRAMS
Each heating circuit (or zone) also has its own holiday program.
As for time programming, each holiday program is active only
when the heating circuit in question is running in automatic
mode; refer to par. 3�3p�7 and 4�3p�10.
Each holiday program allows you to set up to 8 periods of ab-
sence over the year; for each period you can specify whether the
room units should maintain the reduced or anti-icing protection
setpoints.
To set the holiday programs, proceed as follows:
Heating circuit 1 holiday program
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK on the room unit; this displays the list of menus.
3. Turn the knob to select the Holidays zone 1 menu.
4. Press OK to access the menu.
5. Parameter 641 (Preselection) displays, the value of which
indicates the period of absence for which the following set-
tings will apply; you can set the values:
Period 1, Period 2, …. Period 8.
To modify the initial setting (Period 1):
▶
press OK, the parameter's value will start ashing:
▶
turn the knob to set the value;
▶
press OK to conrm; the new preselection value will
display without ashing at the bottom right; the fol-
lowing settings will apply to the period in question
6. Turn the knob to select parameter 642 (Period 1: Start) the
value of which indicates the date (day and month) on which
the rst period of absence starts; to modify this value:
▶
press OK, the two leftmost digits (month) start
ashing;
▶
turn the knob to set the month;
▶
press OK to conrm; the new value of the month dis-
plays without ashing, while the two leftmost digits
(day) start ashing;
▶
turn the knob to set the day;
▶
press OK to conrm; the date displays without
ashing.
7. Turn the knob to select parameter 643 (Period 1: End) the
value of which indicates the date (day and month) on which
the rst period of absence ends; to modify this value:
▶
press OK, the two leftmost digits (month) start
ashing;
▶
turn the knob to set the month;
▶
press OK to conrm; the new value of the month dis-
plays without ashing, while the two leftmost digits
(day) start ashing;
▶
turn the knob to set the day;
▶
press OK to conrm; the date displays without
ashing.
8. Turn the knob to select parameter 648 (Operating level)
the value of which indicates the room setpoint to be main-
tained during the period in question; to change the setting:
▶
press OK, the parameter's value will start ashing:
▶
turn the knob to set the value:
- Protection (anti-icing protection setpoint)
or:
- Reduced (reduced setpoint);
▶
press OK to conrm; the new value displays without
ashing.
9. If you need to set other annual periods of absence, repeat
steps 5, 6, 7 and 8 as many times as needed, with a dierent
Period of absence in step 5 each time (Period 2, Period 3,
etc.)
An inactive period of absence is indicated by hyphens ( -
-:- - ) in place of the date (day and month) for the respec-
tive “Period n: Start” and “Period n: End” parameters.
To set a parameter to the disabled setting, turn the knob
counterclockwise until the hyphens display.
Once you have nished setting the holiday program parameters
for heating circuit 1, press ESC to return to the list of menus; you
can now congure other holiday programs, or press ESC again
to go back to the start screen.
Heating circuit 2 and 3 holiday programs
These programs are set in the same way as for heating circuit 1,
with the following dierences:
▶
In step 3, select the menu:
▶
Holidays zone 2
▶
Holidays zone 3
depending on the holiday program you wish to set.
▶
For the rest of the procedure, refer to table 5.3p.16 for the
parameter codes.
5 Parameters and settings
16
Once you have nished setting the holiday program parameters,
press ESC to go back to the list of menus; you can now congure
other holiday programs, or press ESC again to return to the start
screen.
Table 5�3 – Holiday program parameter codes
Parameter code Description of parameter
HC1 HC2 HC3
641 651 661
Preselection
Period 1 / Period 2 / … / Period 8
642 652 662
Period n: Start (n: 1 – 8)
DD:MM [factory setting: - -.- -]
643 653 663
Period n: End (n: 1 – 8)
DD:MM [factory setting: - -.- -]
648 658 668
Operating level
Protection / Reduced
There is no holiday program for DHW production. If you
intend to be away for a long time, you can:
▶
set ECO mode for the DHW system; the system will
produce DHW at the DHW reduced setpoint temper-
ature over the 24 hours
or:
▶
deactivate the DHW system; no DHW will be
produced.
Both these settings can be made by pressing the dedi-
cated button on the QAA75.611 room unit, as described
in par. 3�6p�8
In ECO mode, if the legionella function is enabled (see
par. 5�7p�17) the system will run regular thermal dis-
infection cycles.
Remember to restore normal operation when back.
5�6 HEATING CIRCUIT SETTINGS
Each heating circuit (or zone) has some own menu in which you
can set its operating parameters.
The most commonly used parameters operating (mode and
comfort setpoint) can also be set directly, as described in par.
3�3 p� 7 and 4�3 p� 10, 3�4 p� 7 and 4�4 p� 11; par.
3�4 p� 7 also describes how to set the reduced setpoint in
programming mode.
This paragraph is thus only of interest to the end user if he
wishes to make special settings; in case of doubt, contact the
TAC�
To access the settings menu, proceed as follows:
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK; this displays the list of menus.
3. Turn the knob to select the menu:
▶
Heating circuit 1
▶
Heating circuit 2
▶
Heating circuit 3
depending on which circuit you wish to congure.
4. Press OK to access the menu.
5. Turn the knob to select the parameter, with reference to Ta-
ble 5.4p.16.
6. Press OK, the parameter's value will start ashing
7. Turn the knob to set the value
8. Press OK to conrm.
9. If you wish to set other parameters in the same menu, repeat
steps 5, 6, 7 and 8 for each parameter in question.
Once you have nished setting the parameters for a given heat-
ing circuit, press ESC to return to the list of menus; you can now
congure other heating circuits, or press ESC again to return to
the start screen.
Table 5�4 – Heating circuit parameter codes
Parameter code Description of parameter
HC1 HC2 HC3
700 1000 1300
Operating mode
Protection / Automatic / Reduced / Comfort
710 1010 1310
Comfort setpoint (Ambient comfort setpoint)
CC.C °C [factory setting: HC1, HC2, HC3: 21.0 °C]
712 1012 1312
Reduced setpoint (Ambient reduced setpoint)
RR .R °C [factory setting: HC1, HC2, HC3: 18.0 °C]
714 1014 1314
Protection setpoint (Ambient frost protection setpoint)
PP.P °C [factory setting: HC1, HC2, HC3: 7.0 °C]
720 1020 1320
Heating curve slope
0.10 – 4.00 [factory setting: HC1, HC2: 0.76; HC3: 1.26]
730 1030 1330
Summer/winter heating limit
LL.L °C [factory setting: 18.0 °C]
742 1042 1342
Flow temp setpoint room stat
- - - °C (Do not change this setting)
We explain the parameters listed in Table 5.4p.16 below
Comfort, reduced and frost protection modes and setpoints
These parameters are detailed in par. 3�3 p�7 and 4�3p�10,
5 Parameters and settings
Use manual – System controller
17
3�4p�7 and 4�4p�11�
Directly setting the operating mode and Comfort set-
point is exactly the same as setting them in program-
ming mode.
Heating curve slope
Each heating circuit (or zone) has its own heating curve. The heat-
ing curve enables the system to modify the outlet temperature-
as a function of the external temperature, adapting the thermal
power delivered to the terminals (radiators, fan coil units, oor
radiators, etc.) to the building's actual heating requirements.
It follows that the outlet temperature will be higher for lower
external temperatures, while it will be lower for higher external
temperatures.
This technique has considerable advantages compared to con-
stant outlet temperature solutions:
▶
room comfort is greatly improved thanks to a delivery of
thermal power which is commensurate to need, and hence
more constant; this avoids alternating periods of excessive
heating with periods of no heating at all, which results in os-
cillating room temperature.
▶
The system is more ecient thanks to the higher eciency
of the K18 heat pump and lower thermal dispersion, both
due to the lower water temperature delivered during the
greater part of the cold season; the result is considerable
cost savings.
Depending on the type of terminal and their size, one must set
the correct heating curve as a function of the slope parameter.
When rst starting up the system, the technician set this param-
eter to a value suited to the type and size of terminals for each
circuit.
However, after a a rst period of operation in variable climate
conditions, you may remark that the room temperature is not
constant with variations in the external temperature; in particu-
lar, two cases may arise:
1. the room temperature is lower when the external tempera-
ture is lower
2. the room temperature is higher when the external tempera-
ture is lower
to avoid coming to a hasty conclusion, this assessment
should be based on several observations, as follows:
▶
external temperature stable for at least two days
(i.e., do not make observations while the weather is
changing)
▶
at the same time of day, in heating mode with the
comfort setpoint active for at least the last several
hours
▶
with the same comfort setpoint value
▶
without using, at least in the 24 hours previous to
the observation, other adjusting equipment, such as
manual or thermostatic valves on radiators, or zone
thermostats with or without timers: the valves must
be kept completely open and the zone thermostat
settings must be at least a few degrees higher than
the comfort setpoint.
If the assessment conrms that the situation corresponds to
case 1, you must increase the slope of the heating curve, so as
to increase thermal power delivery when the external tempera-
ture is low.
If, on the other hand, the situation corresponds to case 2, you
must decrease the Heating curve slope, to reduce thermal pow-
er delivery when the external temperature is low.
We recommend making gradual adjustments, so as to
avoid major changes to the setting; for example, when
using a moderate slope heating curve (1.26), to obtain
a variation of 1°C in the room temperature, the slope
must be varied by:
▶
0.08 at an external temperature of -5 °C
▶
0.06 at an external temperature of -10 °C
▶
0.04 at an external temperature of -20 °C
For example, if you nd that at -10 °C the room temper-
ature is 1 °C lower than that obtained in mild climatic
conditions, you should increase the slope by 0.06.
If, on the other hand, you nd that at -5 °C the room
temperature is 2 °C higher than that obtained in mild
climatic conditions, decrease the slope by 0.16.
Furthermore, after each change in the setting, let the
system stabilise for 1-2 days to assess its eect.
Summer/winter heating limit
For each heating circuit (or zone), a parameter is available to de-
ne the external temperature above which the heating system is
automatically deactivated and below which it is activated.
▶
Increasing the value
▶
Brings forward activation of the heating system
▶
Delays deactivation of the heating system
▶
Decreasing the value
▶
Delays activation of the heating system
▶
Brings forward deactivation of the heating system
The external temperature in question is not that meas-
ured at a given time, but rather a value ltered to ac-
count for the building's thermal inertia.
Heating is not deactivated when the limit value is ex-
ceeded if the heating circuit is set to operate in continu-
ous comfort mode.
Flow temp setpoint room stat
For correct operation of the system, do not change the setting
of this parameter from the factory value of - - - °C (function
disabled).
5�7 DHW SYSTEM SETTINGS
The DHW system can be activated and deactivated directly, as
described in par. 3�6 p�8. You can do the same in program-
ming mode; you can also modify the DHW comfort setpoint, i.e.
the temperature maintained by the system in the DHW buer
tank.
To access the settings menu, proceed as follows:
1. Make sure the display is showing the start screen; press ESC
twice to be certain.
2. Press OK; this displays the list of menus.
3. Turn the knob to select the DHW menu
4. Press OK to access the menu.
5. Turn the knob to select the parameter, with reference to Ta-
ble 5.5p.18.
6. Press OK, the parameter's value will start ashing
7. Turn the knob to set the value
8. Press OK to conrm.
9. If you wish to set other parameters in the same menu, repeat
steps 5, 6, 7 and 8 for each parameter in question.
6 Errors
18
Once you have nished setting the parameters, press ESC to re-
turn to the list of menus; you can now congure parameters in
other menus, or press ESC again to go back to the start screen.
Table 5�5 – DHW system parameter codes
Parameter code Description of parameter
DHW
1600
Operating mode
O / On / Eco
1610
Nominal setpoint
(Comfort setpoint)
CC.C °C [factory setting: 55.0 °C]
Operating mode
This parameter is described in detail in par. 3�6p�8.
Directly setting the operating mode is exactly the same
as setting them in programming mode.
Comfort setpoint
The factory setting of 55 °C is suited to the vast majority of
household installations.
If the DHW buer tank is oversized, reducing this value to 50 °C
will yield cost savings.
If, on the other hand, the tank is relatively small (not an advisable
situation), you can increase the value. However, we recommend
not exceeding a value of around 57-58 °C; doing so can impact
the eciency of DHW production.
Activating the DHW time program and modifying the DHW
reduced setpoint
AS explained in par. 5�4 p� 13, these settings must be made
by a TAC.
Legionella protection
The DHW system includes an optional function which regularly
runs a thermal cycle to prevent and eliminate legionella bacte-
ria. The cycle consists in periodically raising the DHW tempera-
ture to a value which kills o the bacteria.
The function is disabled as the factory default, and must be ena-
bled by a TAC if required.
Once enabled, the factory legionella cycle settings are given in
Table 5.6p.18.
If necessary, the TAC can modify these settings.
Table 5�6 – Legionella disinfection cycle factory settings
Disinfection cycle characteristics Setting
Programming type Weekly
Day of execution Thursday
Start time 02:00
Setpoint 60 °C
Setpoint hold time 45 min
Be aware that, when the legionella cycle is activated, the
DHW temperature in the buer tank will be greater than
normal for a few hours after the thermal disinfection cy-
cle executes. Risk of scalding!
6 ERRORS
6�1 ERROR LIST
Table 6.1p.18 lists the error codes generated by the K18 sys-
tem controller, along with their descriptions and priorities. The
last column of the table lists measures for resolving the problem.
Errors are shown on the QAA75.611 room unit's display with the
symbol
. If you press ( ) when this symbol is displayed, the
unit will display the code and description of the highest priority
error. No other errors will be displayed until this error is resolved.
Table 6�1 – List of system controller errors for K18
Code Description Priority See:
10 Outside sensor B9 6 Par. 6.2
26 Common ow sensor B10 6 Par. 6.2
30 Flow sensor 1 (1) 6 Par. 6.2
32 Flow sensor 2 (6) 6 Par. 6.2
50 DHW sensor 1 (2) 6 Par. 6.2
60 Room sensor 1 (3) 6 Par. 6.2
65 Room sensor 2 (4) 6 Par. 6.2
68 Room sensor 3 (7) 6 Par. 6.2
83 BSB, short-circuit (5) 8 Par. 6.2
84 BSB, address collision 3 Par. 6.2
103 Communication failure 3 Par. 6.2
127 Legionella temp 6 Par. 6.2
324 BX same sensors 3 Par. 6.2
330 BX1 no function 3 Par. 6.2
331 BX2 no function 3 Par. 6.2
332 BX3 no function 3 Par. 6.2
333 BX4 no function 3 Par. 6.2
6 Errors
Use manual – System controller
19
370 Thermodynamic source 9 Par. 6.3
441 BX31 no function 3 Par. 6.2
442 BX32 no function 3 Par. 6.2
443 BX33 no function 3 Par. 6.2
444 BX34 no function 3 Par. 6.2
(1) Probe B1 (heating circuit 1 outlet sensor)
(2) Probe B3 (DHW production tank probe)
(3) Room unit 1
(4) Room unit 2
(5) Shown in this form in the error log, accessible to TAC. The in-
formation screen displays the text “No connection” without er-
ror code.
(6) Probe B12 (heating circuit 2 outlet sensor)
(7) Room unit 3
6�2 SYSTEM CONTROLLER ERROR HANDLING
Errors normally reset themselves automatically when their cause
is eliminated; only in some cases need they be reset manually, as
indicated below.
In presenza di errore di codice 370 (Sorgente termodinamica),
si operi come indicato nel Paragrafo 6.3p.19.
The presence of other error codes usually indicates fault of a
sensor or system cable, or problems due to incorrect congura-
tion of the system controller (e.g. due to an inexpert attempt to
modify the conguration).
Modications to the settings described in this manual
do NOT cause errors.
In any case, proceed as follows:
1. Nel caso in cui, accedendo alla schermata di informazione
dell’errore come descritto nel Paragrafo 6.1p.18, compaia
in basso a sinistra la scritta Reset ? ed in basso a destra la
scritta Sì, premendo due volte il tasto OK è possibile es-
eguire il tentativo di reset dell’errore.
2. If the operation described in point 1 is not applicable (the
error information screen does not prompt for a reset) or does
not resolve the problem, shut o electrical power to the sys-
tem controller and then power it on again.
3. If the operation described in point 2 does not resolve the
problem, note down the room unit error code and contact
the TAC.
6�3 K18 ERROR HANDLING
If error code 370 (Thermodynamic source) is reported, to indi-
cate a problem with the K18 heat pump:
1. Wait up to 20-30 minutes. In most cases, a K18 error is report-
ed in response to transitory events which are automatically
resolved by the unit's on-board controller.
2. If the error persists, press either the reset button on the right
side of the K18 unit (next to the transparent window over the
on-board controller's display), or the button on the system
controller enclosure, shown in g. 2.1p.5.
3. If the error persists or recurs within a few minutes:
▶
check that the K18 unit is powered on (the display,
visible via the transparent window, is on); if not, re-
store power;
▶
check that the gas supply is present; for example,
check whether the check valve is closed. After resolv-
ing the problem, press either of the reset buttons as
indicated in point 2.
4. If the problem is still not resolved even after restoring elec-
trical power and the gas supply, contact the TAC. If possible,
make sure to note down the error code/s on the K18 unit's
display, and report them to the TAC.
▶
The display will show one or more ashing codes like
u xxx or E xxx; the letter u or E is green, xxx is a three
digit numerical code, which displays in red.
▶
If multiple fault codes are present, they will be dis-
played in sequence: note down all the codes.
The error codes display alternately with other
information:
- outlet water temperature, preceded by a green
symbol
- inlet water temperature, preceded by a green
symbol
- dierence between the two temperatures, preceded
by a green symbol
If at least one error code is present, the green ,
and symbols will display ashing.
If the display is showing this information, you may
therefore have to wait a few seconds before the error
codes are displayed.
For further details, refer to the “K18 Installation, user and main-
tenance manual”.
Robur mission
Robur Spa
advanced climate
control technologies
Via Parigi 4/6
24040 Verdellino/Zingonia (Bg) Italy
T +39 035 888111⇒F +39 035 884165
www.robur.it robur@robur.it
Robur is dedicated to dynamic progression
in research, development and promotion
of safe, environmentally-friendly, energy-eciency products,
through the commitment and caring
of its employees and partners.
Revision: A Code: D-LBR771 15MEDSDC007 13/01/2016
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in altre lingue
- English: Robur K18
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