Beretta Control Box SUN C Instruction Manual

kWh
Esc
F1
F3
F4
F2
A1
CONTROL BOX
SUN C
DIFFERENTIAL
CONTROLLER
INSTRUCTIONS FOR THE
USER, INSTALLER AND
TECHNICAL SERVICE

INSTALLER MANUAL
2
The following symbols are used in this manual:
b WARNING = actions that require special care and suitable preparation
a PROHIBITED = actions that absolutely must NOT be carried out
This booklet code 20075772 - Rev. 1(04/14) contains 36 pages.
Dear Customer,
Thank you for having placed your trust in us.
You have surely chosen one of the best appliances available on the market, designed and built using
advanced technology that, we are certain, you will have the opportunity to appreciate over the long
working life of the product.
Please read this booklet carefully. It contains important warnings and suggestions for the installation
and correct use of the temperature controller and how to fully exploit its features.
Thank you once again.
The Control Box SUN C differential controller is compliant with:
• Low voltage directive 2006/95/EC (formerly 73/23/EEC)
• Electromagnetic compatibility directive 2004/108/EC (formerly 89/336/EEC)
• EN 60730-1:2000, EN 60730-2-9

3
CONTENTS
1 WARNINGS AND SAFETY INSTRUCTIONS............................................. 4
2 DESCRIPTION OF THE DEVICE ............................................................... 4
General operation .........................................................................................................................................4
Controls.........................................................................................................................................................5
Display (operation) ........................................................................................................................................6
Commissioning..............................................................................................................................................7
Setting the user values .................................................................................................................................8
Setting the values reserved for specialists .................................................................................................10
Assembly / dismantling ...............................................................................................................................18
Dimensions..................................................................................................................................................18
Electrical connection ...................................................................................................................................19
Special functions .........................................................................................................................................20
System diagrams ........................................................................................................................................21
Probes.........................................................................................................................................................35
Technical specifications...............................................................................................................................35

INSTALLER MANUAL
4
1 WARNINGS AND SAFETY INSTRUCTIONS
b Once having removed the packaging,
check that the contents are all present
and intact. Should you notice any prob-
lems, contact the reseller who sold the
device.
b The device must be installed by approved
technicians who at the end of the work
will issue a declaration of conformity that
the installation has been completed in a
workmanlike manner, that is, in compli-
ance with the legislation in force and the
instructions provided in this booklet.
b The Control Box SUN C differential
controller must only be used for the
intended purpose.
b The manufacturer waives all liability, con-
tractual or other, for damage to property
or injury to persons or animals caused
by improper installation, adjustment,
maintenance or use.
b This booklet is an integral part of the
device, and consequently it must be
kept with care and must ALWAYS
accompany the device, even if this is
sold to another owner or transferred to
another user or to another installation.
b If the booklet is damaged or lost, contact
your local Technical Service Centre for
another copy.
Remember that when operating products
involving the use of electricity, a number of
fundamental safety rules must be observed,
namely:
aNever clean or service the device with-
out first disconnecting it from the mains
power supply, by turning the main sys-
tem switch to “OFF”.
aNever pull, disconnect, or twist the elec-
trical cables coming from the device,
even if it is disconnected from the mains
power supply.
aDo not dump the packaging material
into the environment, or leave it within
the reach of children, as it is a potential
hazard
2 DESCRIPTION OF THE DEVICE
2.1
General operation
This controller can manage different types of
heating systems:
1) Solar heating systems
2) Solid fuel boiler with one or two storage
cylinders
3) Solid fuel boiler with solar heating inte-
gration
4) Solar heating system with two collectors
5) Solar heating system with two storage
cylinders - switching by valve
6) Solar heating system with two storage
cylinders – two fill pumps
7) Solar heating system with supplemen-
tary heating function and one or two
storage cylinders
8) Solar heating system with central heat-
ing return temperature control
9) Solid fuel boiler with central heating
return temperature control
10) Solar heating system with two storage
cylinders in cascading
11) Solar heating system with control of two
storage cylinder stratification zones
12) Solar heating system with control of three
storage cylinder stratification zones
13) Solar heating system with drain-back
function

5
kWh
Esc
F1
F3
F4
F2
A1
Function selector
Enter button
Escape button
Parameter
selector
Function selector
No function selected / Stand-by. (The display
shows that the system is switched on but in
stand-by mode)
Current system configuration
-The display shows a diagram of the currently
selected system configuration.
-Turn the parameter selector clockwise to dis-
play the various sensors and actuators in the
selected system configuration along with their
names (e.g. F1, F2, A1). Turn the parameter
selector anti-clockwise to display current sta-
tuses and temperatures.
Collector/storage cylinder temperature sensor
-The display reads out the temperature current-
ly measured by temperature sensor F1 in the
solar collector. In some system configurations,
the temperature measured by the storage
cylinder temperature sensor is shown instead.
-The trend in temperatures measured by the
sensor over the last few hours is also shown.
Supplementary temperature sensor
-The display reads out the temperature cur-
rently measured by temperature sensor F2.
-The trend in temperatures measured by the
sensor over the last few hours is also shown.
-If temperature sensor F2 is not installed, the
display reads out the message “Not con-
nected”.
Storage cylinder top temperature sensor
-The display reads out the temperature cur-
rently measured by storage cylinder top tem-
perature sensor F3.
-The trend in temperatures measured by the
sensor over the last few hours is also shown.
-If temperature sensor F3 is not installed, the
display reads out the message “Not con-
nected”.
Storage cylinder bottom temperature sensor
-The display reads out the temperature cur-
rently measured by storage cylinder bottom
temperature sensor F4.
-The trend in temperatures measured by the
sensor over the last few hours is also shown.
Daily, weekly, monthly or total energy output
-The display reads out the energy produced by
the solar collector/s.
-The display switches automatically between
Wh, kWh and MWh.
User settings
-The display shows the settings the user can
change to adapt the system to his own per-
sonal needs.
Installer settings
-The display shows the setting menus the
installer can use to put the solar controller
into service. A password is required to access
these settings.
kWh
2.2
Controls
Fig. 2.1

INSTALLER MANUAL
6
2.3
Display (operation)
Display content
-The content of the display depends on the
position of the function selector.
-If a system configuration error is detected,
the display turns red.
Standby
-The controller is electrically live.
Automatic mode
-The display shows a schematic of the cur-
rently selected system, together with its
actuators and sensors.
-Turn the selector knob to view either the
names of the various actuators and sensors
(e.g. F1, F2, A1) or their current statuses
and temperatures.
Temperature of sensor F1 (collector/boiler)
-The display reads out the temperature of
the solar collector currently measured by
sensor F1. In some system configurations,
the temperature measured by the solid fuel
boiler temperature sensor is shown instead.
-The sensor’s temperature curve for the last
few hours is also shown.
-The display is updated every minute. The
current time is shown at the bottom right of
the graph.
OFF
Turn to switch the controller on
The controller is powered
on but in standby mode
esc
k
W
h
esc
k
W
h
F1
F2
A1
F3
F4
esc
k
W
h
17:38
80°
70°
72°
Temperature of sensor F2 (supplementary
temperature sensor)
-The display reads out the temperature cur-
rently measured by temperature sensor F2.
-The sensor’s temperature curve for the last
few hours is also shown.
-The display is updated every minute. The
current time is shown at the bottom right of
the graph.
-If temperature sensor F2 is not installed, the
display reads out the message “Not con-
nected”.
Temperature of sensor F3 (top of storage
cylinder)
-The display reads out the temperature cur-
rently measured by temperature sensor F3.
-The sensor’s temperature curve for the last
few hours is also shown.
-The display is updated every minute. The
current time is shown at the bottom right of
the graph.
-If temperature sensor F3 is not installed, the
display reads out the message “Not con-
nected”.
Temperature of sensor F4 (bottom of stor-
age cylinder)
-The display reads out the temperature cur-
rently measured by temperature sensor F4.
-The sensor’s temperature curve for the last
few hours is also shown.
-The display is updated every minute. The
current time is shown at the bottom right of
the graph.
esc
k
W
h
17:38
55°
45°
50°
2
esc
k
W
h
Top
esc
k
W
h
Bottom

7
After having correctly completed installation,
power the controller up.
The display briefly shows the controller firm-
ware version. The standard display is then
shown.
b
For correct operation, enter the time and
date and then suitably configure the sys-
tem. Consequently, the first step involves
setting parameters [P1]/[P2]/[P22].
When the controller is next restarted, it is
ready to operate with the factory settings
(except for parameters [P1]/[P2]/[P22]).
SETTING THE TIME AND THE WEEKDAY
-Turn the function selector to User Menu .
-The display lists the various sub-menus
available to the user.
-Turn the parameter selector to "Clock".
-Press the Enter button to display the current
time.
-Turn the parameter selector clockwise to
increase or anti-clockwise to decrease the
setting to the desired time.
-Press the Enter button to enter your chang-
es.
-Turn the parameter selector to "Weekday".
-Press the Enter button to enter the sub-
menu.
-Turn the parameter selector to select the
current weekday, then press the Enter but-
ton to enter your selection.
2.4
Commissioning
Thermal energy metering
-The display shows the thermal energy pro-
duced by the collector/s. You can view
energy production for today, yesterday, this
week, last week, this month and last year
(the last 365 days).
-The display switches automatically between
Wh, kWh and MWh.
User settings
-The display shows the menus the user can
access to configure the system as needed.
Service settings
-The display shows the menus the installer
can use to put the solar controller into ser-
vice.
-A code (password) is required to access
these settings.
esc
kWh
Energy produced
today delete
esc
User menu
Language
Clock
select OK Press
k
W
h
esc
Service menu
Technician
Parameter
select OK Press
k
W
h

INSTALLER MANUAL
8
2.5
Setting the user values
Turn the function selector to User Menu .
Turn the parameter selector to highlight
the required sub-menu (Language, Clock,
Weekday, Parameters, Reset).
Press the Enter button to access the selected
sub-menu.
Turn the parameter selector to set the required
value.
Press the Enter button again to enter the new
value.
Exiting programming mode
You can exit programming mode at any time
simply by turning the function selector or by
pressing the Esc button.
Any changes made but not confirmed by
pressing the Enter button will be lost.
No. Description Range of values Factory setting Own
setting
00 List of errors Display only No error
01 Time setting 0:00-23:59 10.00
02 Weekday setting: Monday - Sunday Monday
03 Daily production Display only / Reset 0 kWh
04 Total production Display only / Reset 0 kWh
05 Kick pump ON time OFF - 00:00-23:45 07:00
06 Kick pump OFF time 00:15-24:00 22:00
07 Supplementary heating function ON time OFF - 00:00-23:45 05:00
08 Supplementary heating function OFF time 00:15-24:00 21:00
09 Circulating pump ON time OFF - 00:00-20:45 05:00
10 Circulating pump OFF time 05:15-24:00 21:00
11 Anti-legionella function activation time 00.00 – 23:45 02:00
LIST OF USER PARAMETERS (accessible via the "Parameters" menu)
EXPLANATION OF THE VALUES SET /
FUNCTIONS
To change the standard settings, first select
the type of system configuration based on the
system diagrams available (see the chapter
on "System diagrams").
Therefore, parameter [P22] must be set first.
The different values set for the corresponding
system selected/created (1-13) are described
as follows.
If, for example, the controller is used for
system configuration = 1, only refer to the
descriptions for the operation of this system.
VALUES SET BY THE USER
01 Time setting
Set the current time.
02 Weekday
Set the current weekday (Monday - Sunday)
(display only)
RESET PRODUCTION COUNTERS
03 Daily production display (*)
In this position the daily production is dis-
played. At midnight the value is automatically
reset to “0000” and the daily production value
is added to the total production.
The daily production value can be reset to
“0000” by pressing and holding OK for at
least two seconds.
(*) For convenience, energy is displayed in
Wh, kWh or MWh depending on the quantity
produced.
04 Total production display (*)
This value is always updated at midnight.
To determine the exact current total, add the
daily production to the total value "displayed".
Reset the value to “0000” by pressing and
holding OK (for at least two seconds).
(*) For convenience, energy is displayed in
Wh, kWh or MWh depending on the quantity
produced.

9
KICK PUMP FUNCTION
System 2, 9:
No function
System 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
The kick pump function can be activated dur-
ing periods of the day in which solar heating
is required [P05-P06].
This function ensures that the sensor meas-
ures effective collector temperature even if the
collector pump is off at the time.
The function is disabled when no switching
times have been set (P05=P06=OFF) or the
kick duration is zero (P60=OFF). After each
pause set for the kick function [P61], the cor-
responding collector pump is activated for the
kick time set [P60] (ensuring heat is carried to
the probe). If during the monitoring time [P62]
the collector probe measures a temperature
increase of 0.5°C, the collector pump is oper-
ated for one minute.
The switching conditions for the collector
pump are then monitored.
05 Kick pump function ON time
The temperature monitoring function starts at
this time.
06 Kick pump function OFF time
The temperature monitoring function ends at
this time.
AUXILIARY HEATING FUNCTION
Selectable on most systems as an additional
function (see the paragraph on special func-
tions):
When activating the post-heating function, a
temperature can be set [P47] for the selected
storage cylinder.
During the time the function is enabled [P07-
P08], this temperature is maintained constant
by activating an additional heater.
Supplementary heating is switched on if the
temperature measured by sensor F3 is below
P47- P34 (post-heating control hysteresis)
and P52 (solar supplement tolerance).
It is switched off if the temperature measured
by sensor F3 exceeds nominal temperature
P47 (for solar supplement P47-P52).
07 Supplementary heating function ON
The set temperature [P47] is enabled starting
from this time.
08 Supplementary heating function OFF
The set temperature [P47] is enabled until
this time.
CIRCULATING PUMP
Selectable on most systems as an additional
function (see the paragraph on special func-
tions):
P54=1: During the enabling times P09-P10
the circulating pump is always on.
P54=2: During the enabling times.
P09-P10 the circulating pump is on based on
impulses.
P54=3: Circulating pump for Anti-Legionella
function.
09 Circulating pump ON time
The circulating pump is enabled starting from
this time.
10 Circulating pump OFF time
The circulating pump is enabled until this
time.
11 Anti-legionella function activation time
Anti-legionella function activation time.

INSTALLER MANUAL
10
2.6
Setting the values reserved
for specialists
Turn the function selector to .
The values reserved for specialists are param-
eters from 21-110.
b Parameters from 21-110 are password-
protected.
b The default password set is “0000” [21].
If you do not wish to change the access
code (password), simply press the Enter
button to confirm each “0”.
If you wish to change the access code (pass-
word), proceed as follows.
-Select parameter 21 and press the Enter
button.
-Enter the default access code (0000). Press
the Enter button to confirm each digit.
-Now enter the new access code. Turn the
parameter selector to select each new digit.
-Press the Enter button to enter each new
digit. The new code is memorised when the
last digit is entered.
The message “code error” appears if you enter
an unacceptable access code.
If the password is entered by mistake or forgot-
ten, the value can be RESET.
You can use the service menu to force outputs
in order to test relays A2/A3.
No. Description Range of values Factory setting Own
setting
21 Access code – Entering the access code 0000-9999 0000
22 Type of system configuration (see water circuit diagram) 1-13 1
23 Speed level, real value
display only %
24 Speed control operating mode Auto - Manual Auto
25 Speed level, nominal value (manual) 30 – 100 % 100 %
26 Min. speed level (auto) 30 – 100 % 30 %
27 Max. speed level (auto) 30 – 100 % 100 %
28 Temperature differential for 100% control signal 10°K – 90°K 20°K
Switching thresholds / dynamic differentials
30 First switching activation threshold 1°K – 30°K 6°K
31 First switching deactivation threshold 1°K – 30°K 3°K
32 Second switching activation threshold 1°K – 30°K 6°K
33 Second switching deactivation threshold 1°K – 30°K 3°K
34
Post-heating control hysteresis 1°K - 30°K 5°K
Special functions
40 Enable collector temperature (-20)°C – (+95)°C 40°C
41 Disable collector temperature (-20)°C – (+95)°C 35°C
42 Maximum collector temperature 80°C - 180°C 110°C
43 Enable auxiliary heater temperature 0°C – 90°C 60°C
44 Maximum solid fuel boiler temperature 30 °C – 130 °C 90°C
45 Collector protection temperature 80°C - 180°C 110°C
46 Switching threshold for storage cylinder cooling OFF - 1 K - 30 K OFF
47 Set storage cylinder temperature (post-heating) 10°C – 90°C 40°C
50 Maximum storage cylinder temperature 10 °C – 130 °C 60°C
51 Maximum storage cylinder temperature 10 °C – 130 °C 85°C
52 Solar supplement tolerance (see P47) 0°K – 90°K 10°K
53 Anti-Legionella function OFF, (50°C – 70°C) OFF
Additional relay function (outputs A2/A3)
54 Function A2 0 – 8 0
Function A3 0 – 8 0
55 Circulating pump activation time 1 min – 10 min 1 min
56 Circulating pump deactivation time 1 min – 20 min 5 min
Return temperature control
57 Minimum return temperature 0°C – 90°C 60°C
58 Mixing valve differential when OPENING 5°K – 25°K 18°K
59 Mixing valve differential when CLOSING 5°K – 25°K 12°K
Kick pump function (temperature monitoring)
60 Kick duration OFF, 2s – 59s OFF
LIST OF SPECIALIST VALUES

11
No. Description Range of values Factory setting Own
setting
61 Kick pause 10 min – 60 min 30 min
62 Monitoring time for 0.5°C increase 1 min – 5 min 1 min
63 Frost protection temperature OFF; -5°C - +5°C OFF
Production estimation / flow meter
70
Value per impulse [millimetres/impulse] or [litres/impulse] 0,0 – 100 1,1
71
Units of the value per impulse (0=ml/impulse; 1=l/impulse) ml/pulse; l/pulse ml/pulse
72 Distribution of flow for systems with 2 collectors 1:99 – 99:1 50:50
75 Fixed flow x for collector 1 [litres/min] OFF; from 0.1 l/min
to 100 l/min OFF
76 Fixed flow x for collector 2 [litres/min] OFF; from 0.1 l/min
to 100 l/min OFF
78 Mixture proportions 0 – 70 Vol. % 40%
79 Type of glycol Propylene glycol;
ethylene glycol Propylene glycol
Drainback
84 T-max storage cylinder outlet 50°C - 75°C 68°C
85 T-max storage cylinder inlet if active 60°C - 110°C 95°C
86 T-max storage cylinder outlet if active 60°C - 110°C 75°C
87 System filling time 1 min - 10 min 3 min
Hardware/Software
99 Software version 00 00 – 99 99
PWM/0…10V pump control
101 Speed control PWM; 0…10 V PWM
102 PWM base freq. 180 Hz; 2 kHz 180 kHz
103 PWM pump ON from 0 to 100% 15%
104 PWM pump OFF from 0 to 100% 9%
105 PWM min pump from 0 to 100% 15%
106 PWM max pump from 0 to 100% 100%
107 PWM pump overspeed
OFF; from 0 to 100% OFF
108 0% speed voltage from 0 to 10 V 0 V
109 100% speed voltage from 0 to 10 V 10 V
110 OFF voltage from 0 to 10 V 0 V
EXPLANATION OF THE VALUES SET /
FUNCTIONS
VALUES RESERVED FOR SPECIALISTS
21 Password
Password setting (0000). If the password is
forgotten the control unit can be reset. Turn
the power off. Press and hold the Enter button
then switch back on, keeping the Enter button
pressed for another 5 seconds. The message
"EEprom" appears on the display to confirm
that the system has been successfully reset.
All controller parameters, including the pass-
word are reset to their default values.
22 Type of system configuration
Choosing the type of system redefines the
operation of the controller. Set the number
based on the type of system configuration
(system 1 – system 13).
b After setting the system configuration
parameter, all the values will be reset
to the default factory settings (including
the password).
SPEED CONTROL FOR A1/A2
23 Speed level, real value
Indicates the real speed value of A1/A2 as a %.
24 Speed control operating mode (AUTO,
MANUAL)
Selects the operating mode for the speed
control function.
0 = automatic mode (the controller measures
the speed).
1 = manual mode (the set speed affects the
operation of A1/A2).
25 Speed level, nominal value
Only in manual operating mode [P24=1].
Preset speed for A1/A2.
26 Min. speed level
Only in Auto operating mode [P24=0].
Minimum speed setting as a % (P26 < P27).
The value must be selected so as to guaran-
tee safe operation and control of the pump.
27 Max. speed level
Only in Auto operating mode [P24=0].

INSTALLER MANUAL
12
Maximum speed setting as a % (P27 > P26).
28 Temperature differential for 100% con-
trol signal
Only in Auto operating mode [P24=0].
This is the temperature difference between
collector 1 and the storage cylinder that cor-
responds to maximum control signal (100%)
and consequently the maximum pump speed.
If this differential decreases, the speed will
be reduced proportionally, until the minimum
value.
SWITCHING THRESHOLDS / DYNAMIC
DIFFERENTIALS
30 First switching activation threshold
The function for filling storage cylinder 1 using
pump A1 is enabled if the temperature differ-
ence between probe F1 (collector) and probe
F4 (bottom of storage cylinder) exceeds the
activation threshold [P30].
31 First switching deactivation threshold
The function for filling storage cylinder 1 is
disabled when the temperature difference is
less than the deactivation threshold [P31].
32 Second switching activation threshold
Systems 1-7-9-13: No function
Systems 2-5: Circulation to storage cylinder 2
using pump A1 (A2 ON) is enabled if the tem-
perature difference between probe F1 (solid
fuel/collector) and probe F2 (temperature at
bottom of storage cylinder 2) exceeds the
activation threshold [P32].
Circulation to storage cylinder 2 using pump
A1 is deactivated if the difference F1-F2 is
less than the deactivation threshold [P33].
Valve A2 is switched towards storage cylinder
2 if function A1 is active and the first stor-
age cylinder cannot be filled because it has
reached its maximum temperature or when
the temperature difference between F1 (col-
lector temperature) and F2 (temperature at
bottom of storage cylinder 2) exceeds the
activation threshold [P32].
Systems 3-4
The function for activating pump 2 is enabled
when the temperature difference between
probe F2 (solid fuel/collector 2) and probe F4
(temperature at bottom of storage cylinder 1)
exceeds the activation threshold [P32].
Systems 6
Circulation to storage cylinder 2 using pump
A2 is enabled when the temperature differ-
ence between probe F1 (collector tempera-
ture) and probe F2 (temperature at bottom
of storage cylinder 2) exceeds the activation
threshold [P32].
Circulation to storage cylinder 2 is deactivat-
ed when the temperature difference F1-F2 is
less than the deactivation threshold set [P33].
Systems 8
The function for switching valve A2 and devi-
ating the flow of water through the storage cyl-
inder is enabled if the difference between F4
(bottom of storage cylinder) and F5 (central
heating return) is greater than the threshold
set [P32].
The switching function is disabled if the differ-
ence is less than the threshold set [P33].
Systems 10
The overflow function through pump A2 is
enabled when the temperature difference
between probe F3 (temperature at top of
storage cylinder 1) and F2 (temperature at
bottom of storage cylinder 2) exceeds the
threshold set [P32]. The function is disabled
if the difference is less than the deactivation
threshold [P33].
Systems 11
Valve A2 is activated when the temperature
difference between F2 (filling temperature)
and F3 (temperature at top of storage cylin-
der) is greater than the activation threshold
[P32] (filling at the top of the storage cylinder).
A2 is deactivated when this difference is less
than the deactivation threshold [P33].
Systems 12
Valve A3 is activated when the temperature
measured by probe F1 (collector) exceeds
the temperature measured by probe F3 (tem-
perature at top of storage cylinder) by the
activation threshold [P32] (filling at the top of
the storage cylinder).
A3 is deactivated when the difference F1-F3
is less than the deactivation threshold [P33]
(filling in the middle of the storage cylinder).
Valve A2 is activated when the temperature
measured by probe F1 (collector) exceeds
the temperature measured by probe F5 (tem-
perature in the middle of the storage cylinder)
by the activation threshold [P32] (filling in the
middle or at the top of the storage cylinder).
A2 is deactivated when this difference is less
than the deactivation threshold [P33] (filling at
the bottom of the storage cylinder).
33 Second switching deactivation thresh-
old (See [P32])
34 Additional heating control hysteresis
Additional heating is activated if the tempera-
ture at the top of the storage cylinder F3 is
less than the set temperature [P47] minus a
hysteresis. [P34].
As temperature F3 increases, additional heat-
ing remains active until the set temperature
[P47] is exceeded.
SPECIAL FUNCTIONS
40 Enable collector temperature
System 2, 9: No function

13
Systems 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
The collector pump is enabled if collector
temperature exceeds the pump enabling tem-
perature set here.
41 Disable collector temperature
System 2, 9: No function
System 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
The pump is stopped if the collector tem-
perature is less than the disable temperature.
Functions 40-41 prevent the pump being
switched on when very little heat is being
produced.
42 Maximum collector temperature
System 2, 9: No function
Systems 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
The collector pumps are stopped when the
corresponding temperature exceeds the safe-
ty limit value set here -> System protection.
The pumps are enabled again when the tem-
perature falls below the maximum collector
temperature [P42] -10°C.
43 Enable auxiliary heater temperature
Systems 1, 4, 5, 6, 7, 8, 10, 11, 12, 13:
No function
Systems 2, 3, 9:
The corresponding pump is enabled if the
auxiliary heater temperature (system 2 = F1,
system 3 = F2) exceeds the limit set here by
5°C. The pump is disabled when the heater
temperature exceeds the enable temperature.
This function allows the heater to reach its
operating temperature.
44 Maximum boiler temperature
Systems 1, 4, 5, 6, 7, 8, 10, 11, 12, 13:
No function
Systems 2, 3, 9:
The circulating pump on the solid fuel boiler is
disabled when the boiler temperature exceeds
the limit set here -> System protection.
The pump is enabled when the temperature is
10°C below the value set.
COLLECTOR PROTECTION FUNCTION
45 Collector protection temperature
System 2, 9: No function
System 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
The collector protection function is designed
to protect the collector from overheating.
The function is activated when the maximum
collector temperature exceeds the collector
protection temperature P45 set here.
If the collector temperature F1 or F2 exceeds
the set collector protection temperature [P45],
and if the storage cylinder temperature is less
than 92°C, the storage cylinder is filled above
its maximum temperature of 95°C, so as to
cool the collector.
The function is stopped when the collector
exceeds its maximum temperature [P42].
The function is enabled again when the col-
lector temperature is below the temperature
[P42] -3°C.
46 Switching threshold for storage cylinder
cooling
P46 = 0 -> no storage cylinder cooling
P46 > 0 -> storage cylinder cooling active
If during the day the collector protection func-
tion has filled the storage cylinders above
the maximum temperatures P50 and P51, by
activating this function the storage cylinder
can automatically be cooled at night between
1:00 and 6:00 by activating the fill pumps until
reaching the maximum temperature set for the
storage cylinders P50/P51. During this period,
the storage cylinders cannot be filled by any
other functions. This function is designed to
protect the storage cylinder.
Cooling can only occur when the storage
cylinder temperature exceeds the collector
temperature by at least the switching thresh-
old [P46] +3°C.
47 Set temperature for central heating
Only when the special central heating function
is selected.
The additional heating device (A2/A3) is ena-
bled when the temperature at the top of the
storage cylinder (F3/F5) is lower than the limit
set here by [P34]. It is disabled when the tem-
perature of the storage cylinder exceeds the
enable temperature.
If solar heating performance is higher, the
heating device is enabled when the storage
cylinder temperature is [P47] - [P34] - [P52].
50 Maximum storage cylinder temperature
b If the storage cylinder is fitted with a top
probe (F3), then the maximum tempera-
ture is monitored by this probe. If this
probe is not installed, then the maxi-
mum storage cylinder temperature is
monitored using probe F4. In this case,
stratification inside the storage cylinder
needs to be taken into consideration.
Systems 1, 3, 4, 7, 8, 9, 10, 11, 12, 13:
The circulating pumps are disabled if the
temperature in storage cylinder 1 exceeds the
safety limit value set here to protect the system.
The pumps are enabled when the temperature
falls below the temperature set [maximum stor-
age cylinder temperature – 5°C].
System 2, 5, 6:
For these systems, storage cylinder 2 can
also be filled.

INSTALLER MANUAL
14
51 Maximum temperature of storage cyl-
inder 2
System 1, 3, 4, 7, 8, 9, 11, 12, 13: No function
System 2, 5:
Circulating pump A1 is disabled if the tempera-
ture in storage cylinder 2 exceeds the safety
limit value set here and storage cylinder 1 can-
not be filled (A2 towards storage cylinder 2).
The pump is enabled when the temperature is
less than the temperature [P51] – 5°C.
System 6, 10:
Fill pump A2 is disabled when the tempera-
ture of storage cylinder 2 exceeds the limit set
here to protect the system.
The pump is enabled again when the temper-
ature is less than the temperature [P51] – 5°C.
After 30 minutes, the fill pump for the second
storage cylinder is switched off for 2 minutes.
If the temperature of the storage cylinder rises
by at least 1°C during this time, the fill pump
remains switched off for a further 2 minutes.
This cycle is repeated until no temperature
increase is detected or until the fill pump for
the first storage cylinder is switched on.
52 Solar supplement tolerance
Systems 1, 2, 3, 4, 5, 6, 7, 8, 10, 11: Only
when the special central heating function is
selected.
If the storage cylinder is filled by the collector
(A1 = ON), then the additional heater is ena-
bled only if the storage cylinder temperature
is less than the set temperature [P47] by the
value [P52] + [P34]. The heater is disabled
again if the storage cylinder temperature
reaches the value [P47] - [P52].
ANTI-LEGIONELLA FUNCTION
Systems 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13:
Only when the special central heating function
is selected.
Supplementary heating function: active.
The storage cylinder is heated to its anti-
legionella temperature P53 at the set time
of P11 every Saturday. This function is only
activated if anti-legionella temperature (P53)
has not been reached during the previous
week. The temperature is monitored by probe
F4 "bottom of storage cylinder". The Anti-
Legionella function is disabled if the set
temperature cannot be reached in 3 hours or
alternatively if the maximum temperature set
for the storage cylinder is reached, as meas-
ured by probe F3 (only if fitted).
The Anti-Legionella function can only be com-
pleted successfully if the external heater
(during the activation period) can reach the
required temperature.
The anti-legionella cycle can only be com-
pleted successfully provided the boiler is able
to reach the required temperature during the
anti-legionella cycle.
53 Anti-Legionella function
OFF = Operation disabled (default).
50°C - 70°C = Operation enabled.
ADDITIONAL RELAY FUNCTIONS
If outputs A2 and A3 are not assigned to
a specific function, they can be freely pro-
grammed for one of the special functions.
54 Function A2 / A3
0 = Output A2/A3 not active.
1 = Circulating pump, during the enabling
times [P09-P10] the output is continually
active.
2 = Circulating pump with impulses, within
the enabling times [P09-P10] the output is
only active when the impulse is ON.
3 = Circulating pump with Anti-Legionella, the
output is active when the Anti-Legionella func-
tion is enabled.
4 = Storage cylinder 1 heating, reference
probe F3.
5 = Storage cylinder 2 heating, reference
probe F5.
6 = Return temperature control, storage cylin-
der 1.
7 = Return temperature control, storage cylin-
der 2.
8 = Solar collector protection: the output
becomes active if the collector protection
temperature (P45) is exceeded, and can be
used to activate a heat dissipation system
(e.g. fan-coil).
Circulation by impulses
If the impulse input is short-circuited, the cir-
culating pump is started for the duration set
for P55. It can only be activated again after
the expiry of the deactivation time P56.
The pump can only operate during the ena-
bling times [P09-P10].
Additional heating
The additional heating function is only active
during the enabling times [P07-P08].
If during this period temperature the set for
the storage cylinder decreases by at least
5°C (for solar supplement by P52+5°C), then
the selected output is switched (additional
heating), until reaching the set temperature
(additional heating OFF).
55 Circulating pump activation time
Time the circulating pump remains on, in
minutes, after the transmission of an impulse.
56 Circulating pump deactivation time
If the circulating pump is activated, it can only
be started again after the expiry of the deac-
tivation time.

15
RETURN TEMPERATURE CONTROL
System 9:
The integrated mixing valve (A2=OPEN,
A3=CLOSED) controls the return temperature
to the heat generator at the minimum return
temperature set, P57.
If this temperature is not reached in the heat
generator, then the mixing valve is closed
completely. If the return temperature at the
storage cylinder exceeds this value, the mix-
ing valve is opened completely.
57 Minimum return temperature
System 9:
This temperature is controlled by the mixing
valve.
58 Mixing valve differential when OPENING
System 9:
Valve reaction speed setting when opening.
The valve will only open after the return tem-
perature has exceeded the set value [P57],
plus a set temperature interval in °C. Once
these conditions have been ascertained, the
valve will open without interruption.
59 Mixing valve differential when CLOSING
System 9:
Mixing valve dynamics when closing. The
valve will only close after the return tempera-
ture has fallen below the set value [P57], less
a set temperature interval in °C. Once these
conditions have been ascertained, the valve
will close without interruption.
b Low values cause a rapid duty cycle of
the mixing valve and may cause swings.
KICK PUMP FUNCTION (check temperature
function)
By activating the collector pump for a short
period, the heat exchange fluid heated by the
collector flows past the probe, allowing the
collector temperature to be measured.
System 2, 9: No function
Systems 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13:
60 Kick duration [sec]
Duration of collector pump operation for the
kick pump function.
61 Kick pause [min]
If the collector pump is not operating for the
time set here, then it is started for the "Kick
duration" [P 60].
62 Monitoring time for 0.5°C increase [min]
In this period of time after the kick pump
function is activated, the trend in the collector
temperature is monitored.
If the temperature increases by at least 0.5°C,
the pump is activated for another minute.
FROST PROTECTION
63 Frost protection temperature
If the temperature of the solar collector falls
below the set frost protection temperature, the
collector’s pumps are switched on.
The pumps are switched off again when
the temperature of the collector rises to 2°C
above the set frost protection temperature.
ESTIMATED PRODUCTION / FLOW METER
During the operation of the collector pump,
the impulses from an optional flow meter are
counted (see connection diagram: Impulse).
Based on the flow measured (by entering the
value per flow meter impulse for [P70]) and
the temperature difference between F1 and
F4, the controller can calculate the amount of
solar heating produced.
b If on these systems probe F2 is installed
as a return circuit probe for the col-
lector, then the temperature difference
between the heat generator and F2 is
calculated; if this is not the case, F4 will
be used.
b System 4: For system 4 solar heating pro-
duction is calculated for both collectors.
Consequently, if both collector pumps
are on, the heat flows are calculated
based on the proportion of flow [P72].
To make the calculation the type of heat
exchange fluid in the system must be set
(type of glycol = [P79]) and the proportion of
water in the mixture [P78].
The daily and total production are displayed
in [kWh]; for values over 10 MW the total pro-
duction is displayed in [MWh]. This change
is indicated on the display by three arrows.
At midnight the daily production value is set
back to zero. Both values can be set to zero
manually in the user level by pressing the
“OK” button.
b When measuring production using a
pulse transducer, the circulating pump
must not be active by setting parameter
P54=2.
b If a pulse transducer is not installed, the
production value can be estimated.
To do this, enter the average flow-rate
through the corresponding collector with
the pump operating [P75]+[P76]. The
flow can be determined by installing a
pump operating hour counter or by cal-
culation (installer).
b The estimated production using a vari-
able speed pump controlled by A1
does not give a correct value, as the

INSTALLER MANUAL
16
volumetric flow can only be estimated
approximately.
Tip for calculating the flow:
approx. 0.8 [l/min] per square metre of collec-
tor surface area.
b Warning! This value is not applicable to
Low Flow systems.
70 Value per impulse [millimetres/impulse]
[litres/impulse]
(With flow meter only)
The value per impulse of the flow meter
(optional) can be found in the flow meter
documentation.
71 Unit of the value per impulse set
(With flow meter only)
Switching between [ml/impulse] and [l/
impulse].
72 Distribution of flow for systems with 2
collectors
(System 4 only):
Enter the proportion of flow through both col-
lectors if both fill pumps are operating.
75 Fixed flow x for collector 1 [litres/min]
(Without flow meter only - see estimated pro-
duction)
76 Fixed flow x for collector 2 [litres/min]
(Without flow meter only - see estimated pro-
duction)
78 Mixture proportion
Systems 2, 9 -> No function:
The proportion of the mixture of heat exchange
fluid (fluid used to fill the solar heating installa-
tion) can be found in the documents provided
or alternatively requested from the installer.
79 Type of glycol
Systems 2, 9 -> No function:
(Solar heating installation documents/installer)
0 = Propylene glycol.
1 = Ethylene glycol.
84 T-Max storage cylinder outlet
84 = 50 – 75 °C: Maximum storage cylinder
temperature measured by sensor F4. The
pumps are switched off for as long as F4 >
P84.
85 T-Max storage cylinder inlet
85 = 60 – 110 °C: Maximum storage cylinder
temperature measured by sensor F3 when the
pump is running. The pump is switched off for
as long as F3 > P85.
86 T-Max storage cylinder outlet
86 = 60 – 110 °C: Maximum storage cylinder
temperature measured by sensor F4 when the
pump is running. The pump is switched off for
as long as F4 > P86.
87 Filling time
87 = 1 – 10 min
99 Software version
(display only).
PWM/0…10V pump control
These relay outputs are ideal for use with a
high efficiency pump. Pump speed can be
controlled by PWM or a 0-10 Volt input signal.
The control method (PWM or 0-10 Volt) can be
selected and the pump control values set in
the following parameters.
P101 Speed control
P101 = PWM; 0…10V
Selection of pump control mode.
P102 PWM base frequency
Only available if P101 = PWM
P102 = 180 Hz; 2 kHz: The desired speed (0
to 100 %) is achieved by the corresponding
PWM width ratio.
P103 PWM pump ON
Only available if P101 = PWM
P103 = 0 – 100 %: The PWM signal is sent for
5 seconds at the start of the pump run time to
ensure correct starting.
P104 PWM pump OFF
Only available if P101 = PWM
P104 = 0 – 100 %: 0% speed signal (the
pump is effectively switched off); can be iden-
tical to P105. The relay is deactivated.
P105 PWM min pump speed
Only available if P101 = PWM
P105 = 0 – 100 %: The minimum pump speed
signal while the pump is running.
P106 PWM max pump
Only available if P101 = PWM
P106 = 0 – 100 %: The maximum pump speed
signal while the pump is running.
P107 PWM PWM pump overspeed
Only available if P101 = PWM
P107 = OFF
P107 = 0 – 100 %:
Systems 1 to 12: Function not used
System 13: In the case of pumps with a kick-
down function, the maximum speed signal is
sent for the duration of filling time.

17
P108 0% speed voltage
Only available if P101 = 0…10V
P108 = 0.0 – 10 V: The minimum pump speed
setting.
P109 100% speed voltage
Only available if P101 = 0…10V
P109 = 0.0 – 10 V: The maximum pump speed
setting.
P110 OFF voltage
Only available if P101 = 0…10V
P110 = 0.0 – 10 V: The voltage at which the
pump and its control relay are switched off.
OTHER FUNCTIONS
Anti-block function
This function effectively prevents the pumps
from blocking due to excessive inactivity. The
integrated anti-block function means that all
pumps that have not operated over the last
24 hours are started for 5 seconds each day,
between 12.00 and 12.01.
Stop pumps (temperature monitoring)
The filling of the second storage cylinder (2)
(measured by probe F3) is stopped for 60
sec. every 30 min.
After this time, the conditions to start filling
the main storage cylinder (probe F4) are
checked. This function is only performed if
the main storage cylinder has not reached the
maximum temperature [F4 < ([P50]-5°C)].

INSTALLER MANUAL
18
2.7
Assembly / dismantling
-Version 1: through the side hole
-Version 2: from the front
2.8
Dimensions
AFastening holes
BFastening holes for assembly on the push-
button panel
CCable gland opening
Fig. 2.2
Top
A
B
Ø 3,5 x 35 mm
Ø 6 mm
C
A
68142
95
Esc
F1
F3
F4
F2
A1 kWh
Fig. 2.3
Fig. 2.4

19
2.9
Electrical connection
N
GND
1
2
3
4
5
6
7
8
9
10
Sensor
230 V
11
12
13
14
15
16
17
18
19
20
21
22
A3
A2
A1 (n)
L1
N
T1
T2
L1’
/
Top
L1’
PWM
Pump A1
PWM
Pump A2
F2
2
F3
F4
F5
G
F1
5
Fig. 2.5
Power supply:
230V AC - Relay contact ratings (2) A 250V AC
Network connections:
2Phase wire (device power supply L)
1Neutral wire, device
NNeutral wire, pump A1
5Phase wire A2 (power supply to valve
/ pump / additional heater)
6
Phase wire (power supply to pump A1)
NNeutral wire, valve / pump / additional
heater A2/A3
9Phase wire (power supply to valve /
pump / additional heater A3)
Place a jumper between 2-3
Place a jumper between 3-10
Place a jumper between 1 and neutral
terminal N
11-12 PWM pump A1
13-14 PWM pump A2
15-GND probe F1
17-GND probe F2
18-19 o GND probe F3
20-GND probe F4
21-GND probe F5
22-GND Pulse transmitter
Place a jumper between 16 and GND
Place a jumper between 19 and GND
F1 = temperature probe F1
F2 = temperature probe F2
F3 = temperature probe F3
F4 = temperature probe F4
F5 = temperature probe F5
P30 = parameter 30
Switching conditions:
e.g.
ON: F1 - F4 > P30 and F1 > P40
(temperature F1 minus temperature F4
greater than parameter 30 and tem-
perature F1 greater than parameter
P40)
OFF: F1 - F4 < P31 or F1 < P41 (tempera-
ture F1 minus temperature F4 less
than parameter P31 or temperature F1
less than parameter P41)
b Sensor: The sensor in the collector must
be type KLF 1000 (cable with silicone
sheath). For all other applications, type
SPF 1000 can also be used.
b For the electrical connections (230V),
flexible wires must be used with prop-
erly attached ferrule cable ends.
b The BUS wires and sensor lines must be
laid separately from the network wires!

INSTALLER MANUAL
20
2.10
Special functions
Depending on the system chosen, outputs A2
and A3 can be set for special functions.
The desired function is set using parameter
P54 for A2 and A3 separately.
ADDITIONAL HEATING
The special functions can be used to activate
an additional heating function, for example
using electric heaters: [P54=4 (storage cyl-
inder 1), P54=5 (storage cylinder 2)]. The
additional heating device is enabled when
the temperature F3 for storage cylinder 1 (F5
for storage cylinder 2) is less than the set
temperature [P47] by [P34] (for solar sup-
plement [P47]-[P52]). It is disabled when the
temperature of the storage cylinder exceeds
the set temperature.
This function is active during the enabling
time [P07-P08].
A2/A3
F3/F5
Fig. 2.6
CIRCULATING PUMP
The special functions can be used to activate
a circulating pump: [P54=1, P54=2, P54=3].
P54=1 => Circulating pump on continually
during the enabling times [P09-P10].
P54=2 => If the impulse input is short-cir-
cuited, the circulating pump is started for the
duration set for P55, in minutes.
It can only be activated again after the expiry
of the deactivation time P56, in minutes.
The pump is only activated during the ena-
bling times [P09-P10].
P54=3 => activation when the Anti-Legionella
function is enabled.
P54=1, P54=2, P54=3
A2/A3 Impulso
()
impulse
Fig. 2.7
P54=3
A2/A3
Fig. 2.8
INCREASE RETURN TEMPERATURE
The special functions can be used to activate
an increase in the return temperature: [P54=6
(storage cylinder 1; F4), P54=7 (storage cylin-
der 2; F2)]. The central heating system return
flow is deviated through the storage cylinder
and thus heated. The function is activated
using A2 when the temperature in the storage
cylinder exceeds the return temperature (F5) by
the second activation threshold [P32]. The valve
is closed when the temperature in the storage
cylinder is less than the return temperature F5 +
the second deactivation threshold [P33].
OVERLAPPING PROTECTION FUNCTIONS
The following diagrams show how the respec-
tive control functions may overlap one of the
protection functions.
If the collector (see P45) and/or storage cylin-
der cooling (see P46) protection functions are
active, both may activate the same collector
pump.