Viessmann SCU345 User manual

Thank you for buying this product.
Please read this manual carefully to get the best performance from this unit. Please keep this
manual carefully.
5619460 v1.0 04/2012
SCU345
Manual
en-US/CA
Installation
Operation
Functions and options
Troubleshooting
Manual for the
specialized craftsman
*11201562* 11201562

2
en-US/CA
Information about the product
Proper usage
The solar controller is designed for use in 2-tank and
3-tank solar thermal systems in compliance with the
technical data specified in this manual.
Improper use excludes all liability claims.
Note
Strong electromagnetic fields can impair the
function of the controller.
ÎMake sure the controller as well as
the system are not exposed to strong
electromagnetic fields.
Disposal
• Dispose of the packaging in an environmentally
sound manner.
• Dispose of old appliances in an environmentally
sound manner. Upon request we will take back
your old appliances bought from us and guarantee
an environmentally sound disposal of the devices.
Subject to technical change. Errors excepted.
Safety advice
Please pay attention to the following safety advice
in order to avoid danger and damage to people and
property.
Target group
These instructions are exclusively addressed to au-
thorized skilled personnel.
Only qualified electricians should carry out electrical
works.
Description of symbols
WARNING! Warnings are indicated with a warn-
ing triangle!
ÎThey contain information
on how to avoid the danger
described.
Signal words describe the danger that may occur,
when it is not avoided.
• WARNING means that injury, possibly life-threat-
ening injury, can occur.
• ATTENTION means that damage to the appli-
ance can occur.
Note
Notes are indicated with an information
symbol.
ÎArrows indicate instruction steps that should be
carried out.
Contents
1 Overview .................................................... 3
2 Installation ................................................. 4
2.1 Mounting ....................................................................4
2.2 Electrical connection ...............................................4
2.3 Data communication / Bus.....................................5
2.4 SD memory card slot..............................................6
2.5 Overview of basic system layouts ........................6
2.6 System layouts...........................................................7
3 Operation and function .......................... 35
3.1 Buttons .....................................................................35
3.2 Selecting menu points and adjusting values .....35
3.3 Menu structure .......................................................35
3.4 Shortcut....................................................................36
3.5 Indications and system monitoring display .......36
3.6 Further indications.................................................38
4 Status menu............................................. 38
5 Initial commissioning .............................. 38
6 Functions and options............................. 41
6.1 Status level ...............................................................41
6.2 Adjustment channels .............................................43
6.3 Overview of options and their parameters .....62
7 User code and short menu - Adjustment
values ........................................................ 64
8 Messages................................................... 64
9 Troubleshooting....................................... 65
9.1 Miscellaneous ..........................................................66
10 Accessories ............................................. 68
10.1 Sensors and measuring instruments ..................68
10.2 Interface adapters...................................................69
10.3 Visualization modules............................................69
11 Index ......................................................... 70
© 20120510_11201562_Viessmann_DeltaSol_BX_L.monus.indd

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1 Overview
• Extra large graphic display
• 4 relay outputs
• 5 sensor inputs
• Data logging onto SD card
• Thermal disinfection
• Time-controlled thermostat function
• VBus®
• Energy-saving switch-mode power supply
Included:
1 x SCU345
1 x accessory bag
3 x screw and wall plug
8 x strain relief and screws
1 x manual
2 x temperature sensors - FKP6 (-58 °C to +356 °F)
2 x temperature sensors - FRP6 (+23 °C to +176 °F)
Note
For more information about accessories,
see p. 55.
Technical data
Housing: plastic, PC-ABS and PMMA
Protection type: IP 20 / EN 60529
Protection class: I
Ambient temp.: 0 ... 40 °C [32 ... 104 °F]
Dimensions:
204 x 170 x 47 mm [8.03" x 6.69" x 1.85"]
Mounting: wall mounting, also suitable for mounting
into patch panels
Display: System-Monitoring-Display for system visu-
alization, 16-segment display, 7-segment display, 9 sym-
bols, control lamp (directional pad) and background
illumination
Operation:
7 push buttons at the front of the housing
Functions: Controller for multi-tank solar thermal
systems. Functions such as: ∆T control, pump speed
control,energy metering,operating hours counter for
the solar pump, evacuated evacuated tube collector
function, thermostat function, vertical tank loading,
priority logic, heat dump function, thermal disinfec-
tion function, function control according to BAFA
guidelines.
Inputs: 5 inputs for Pt1000 temperature sensors,
1V40 impulse input
Outputs: 3 semiconductor relays, 1 standard relay
Interfaces: VBus®, SD card slot
Power supply: 100... 240V~, 50 ... 60 Hz
Switching capacity per relay:
1 (1) A 100 ... 240V~ (semiconductor relay)
2 (1) A 100 ... 240V~ (standard relay)
Total switching capacity: 4 A
Standby power consumption: < 1W
Mode of operation: type 1.Y
The cTUVus certification confirms
that the controller meets the
demands of the UL 60730-1:2009
and CSA B60730.1:2002 standards.
cTUVus certified!
Letter of equivalency
Dear Sirs,
Dear AHJ Inspector,
TÜV Rheinland of North America, Inc. (TÜV) hereby confirms
that the cTUVus Mark and Certificate assigned by us on and
for this product exceeds or is equivalent to the Listing Process
and Labeling Mark of the Underwriter Laboratories, Inc .
We as a Nationally Recognized Testing Laboratory, authorized
by the Occupational Safety & Health Administration (OSHA),
have evaluated this Product for fire, shock and life safety in
accordance to the appropriate standard(s) contained within
our scope as accredited by the Occupational Safety and
Health Administration (OSHA).The cTUVus Mark is accepted
by city, state, country, federal and provincial authorities and
merchants throughout the U.S. and Canada.
Please do not hesitate to contact us for further questions.We are
always glad to be at your disposal.
TÜV Rheinland of North America

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The unit must only be located in dry interior rooms.
The controller must additionally be supplied from a
double pole switch with contact gap of at least 3 mm
[0.12"].
Please pay attention to separate routing of sensor ca-
bles and power supply cables.
In order to mount the device to the wall, carry out
the following steps:
ÎUnscrew the cross-head screw from the cover
and remove it along with the cover from the
housing
ÎMark the upper fastening point on the wall. Drill
and fasten the enclosed wall plug and screw leav-
ing the head protruding
ÎHang the housing from the upper fastening point
and mark the lower fastening points (centers
150mm [5.9"])
ÎInsert lower wall plugs
ÎFasten the housing to the wall with the lower fas-
tening screws and tighten
ÎCarry out the electrical wiring in accordance
with the terminal allocation, see chap. 2.2
ÎPut the cover on the housing
ÎAttach with the fastening screw
upper fastening point
lower fastening point
cover
screw
2 Installation
2.1 Mounting
WARNING! Electric shock!
Upon opening the housing, live parts
are exposed.
ÎAlways disconnect the con-
troller from power supply
before opening the housing!
ATTENTION! ESD damage!
Electrostatic discharge can lead to
damage to electronic components!
ÎTake care to discharge
properly before touching
the inside of the device!To
do so, touch a grounded
surface such as a radiator
or tap!
Note
Strong electromagnetic fields can impair the
function of the controller.
ÎMake sure the controller as well as the
system are not exposed to strong elec-
tromagnetic fields.
Note
The pump speed must be set to 100 % when
auxiliary relays or valves are connected.
2.2 Electrical connection

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5
WARNING! Electric shock!
Upon opening the housing, live parts
are exposed.
ÎAlways disconnect the con-
troller from power supply
before opening the housing!
WARNING! Electric shock!
L' is a fused contact permanently car-
rying voltage.
ÎAlways disconnect the con-
troller from power supply
before opening the housing!
Note
The connection depends on the system lay-
out selected, see chap. „2.6 System layouts“
on page 7.
Note
For more details about initial commissioning,
see chap. 5, page 39.
Te mp. Sensor
Pt1000
T4A
100 ... 240 V~
50-60 Hz
1 (1) A (100 ... 240)V~
2 (1) A (100 ... 240)V~
R1-R3
R4
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
N
R4
V40
L'
IP 20
CU 72102083.01
750 McMurray Road
Waterloo, ON N2V 2G5
SCU345
The controller is supplied with power via a power
supply cable.The power supply of the device must be
100 ... 240 V~ (50 ... 60 Hz).
The controller is equipped with 4 relays in total to
which loads such as pumps, valves, etc. can be con-
nected:
•TherelaysR1...R3aresemiconductorrelays,
designed for pump speed control:
Conductor R1... R3
Neutral conductor N
Protective conductor
•Relay4isastandardrelay
Conductor R4
Neutral conductor N
Protective conductor
Connect the temperature sensors (S1 to S5) to
the corresponding terminals with either polarity:
S1 = Sensor 1 (collector sensor)
S2 = Sensor 2 (e. g. tank sensor bottom)
S3 = Sensor 3 (e. g. collector sensor collector 2)
S4 = Sensor 4 (e. g. tank sensor tank 2)
S5 = Sensor 5 (e. g. tank sensor tank 3)
A V40 flowmeter can be connected to the terminals
V40 and GND (either polarity).
The power supply connection is at the terminals:
Neutral conductor N
Conductor L
Conductor L' (L' is not connected with the power
supply cable. L' is a fused contact permanently carry-
ing voltage)
Protective conductor
2.3 Data communication / Bus
The controller is equipped with the VBus®for data
transfer with and energy supply to external modules.
The connection is carried out at the two terminals
marked “VBus” and “GND” (either polarity). One
or more VBus®modules, depending on their current
consumption and the current supply of the controller,
can be connected via this data bus, such as:
• Smart Display SD3
• AM1 Alarm module
• DL2 Datalogger
Furthermore, the controller can be connected to a
PC via the VBus®/USB or VBus®/LAN interface adapt-
er (not included with the SCU345).
With the ServiceCenter Software (RSC), measured
values can be read, processed and visualized.
Note
For more information about accessories, see
p. 68.
Note
Connecting the device to the power supply
must always be the last step of the installa-
tion!

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2.4 SD memory card slot
The controller is equipped with an SD card slot for
storing system data onto an SD card. The values
can be opened and visualized, e. g. in a spreadsheet
programme.
A standard SD card is not included with the
SCU345.
For more information about using an SD card, see
page 61,“SD card”.
Standard SD and SD-HC cards can be used.
2.5 Overview of basic system layouts
2-tank system with valve logic, 1
pump, 3 sensors and 3-port valve
(page 7)
2-tank solar system with valve
logic and heat exchange control
(page10)
2-tank solar system with pump
logic (page 13)
2-tank solar system with pump
logic and heat exchange control
(page 16)
3-tank solar system with valve
logic and heat exchange control
(page 19)
3-tank solar system with pump
logic and heat exchange control
(page 22)
Solar system with vertical tank
loading and 2 tanks (page 25)
Solar system with east-/west col-
lectors and 2 tanks (valve logic)
(page 28)
3-tank solar system with east-/
west collectors (page 31)
5 6
7 8 9
123
4
Note
The SCU345 can also be used to control
1-tank systems. For 1-tank sytsems, select
system 1 or system 3, and turn sub channel I
setting LST2 off. (page 45)

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2.6 System layouts
The controller compares the temperature at sensor
S1 to the temperatures at sensors S2 and S4. If the
measured temperature differences are higher than
the adjusted switch-on temperature differences, the
pump (R1) will be activated and the corresponding
tank will be loaded up to the adjusted maximum
temperature via the valve (R3).Tank 1 is loaded with
priority.
System 1
2-tank system with valve logic, 1 pump, 3 sensors and 3-port valve
Note: 3-port valve normally open - tank 1 (S2)
Sensor/
terminal Designation Description
S1 TCOL Temperature collector
S2 TST1B Temperature tank 1 bottom
S3 Optional sensor for measure-
ment purposes or options
S4 TST2B Temperature tank 2 bottom
S5 Optional sensor for measure-
ment purposes or options
V40
Relay Description
R1 Solar pump
R2/R4 optional:
Thermal disinfection
Parallel relay
Heat dump
R3 3-port valve tank 1/2

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
ARR 1 System 43
ROSA 0000 5 ROSA number 60
LOAD1 > Loading 1
DT1O 6.0 K [12.0 °Ra] Switch-on temperature difference 1 44
DT1F 4.0 K [8.0 °Ra] Switch-off temperature difference 1 44
DT1S 10.0 K [20.0 °Ra] Set temperature difference 1 44
RIS1 2 K [4 °Ra] Rise 1 44
S1MAX 60 °C [140 °F] Tank maximum limitation 1 44
SMXS1 2 Sensor tank max 1 44
LOAD2 > Loading 2
DT2O 6.0 K [12.0 °Ra] Switch-on temperature difference 2 44
DT2F 4.0 K [8.0 °Ra] Switch-off temperature difference 2 44
DT2S 10.0 K [20.0 °Ra] Set temperature difference 2 44
RIS2 2 K [4 °Ra] Rise 2 44
S2MAX 60 °C [140 °F] Tank maximum limitation 2 44
SMXS2 4 Sensor tank max 2 44
LST2 ON Loading tank 2 45
COL > Collector
CEM 130 °C [270 °F] Collector emergency temperature 46
OCCO* OFF Collector cooling option 46
CMAX 110 °C [230 °F] Collector maximum temperature 46
OCMN OFF Collector minimum limitation option 46
CMIN 10.0 °C [50.0 °F] Minimum collector temperature 46
OTCO OFF Evacuated evacuated tube collector function option 46
TCST 07:00 Evacuated tube collector starting time 47
TCEN 19:00 Evacuated tube collector ending time 47
TCRU 30 s Evacuated tube collector runtime 47
TCIN 30 min Evacuated tube collector standstill interval 47
OCFR OFF Collector frost protection option 47
CFR O 4.0 °C [40.0 °F] Antifreeze temperature collector on 47
CFR F 5.0 °C [42.0 °F] Antifreeze temperature collector off 48
FRPST 1 Antifreeze tank selection 48
LLOGI > Loading logic
LOGIC PRIO Priority logic 48

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
PRIO1 1 Priority logic tank 1 48
OSTS OFF Tank set option 50
TST1 45 °C [120 °F] Set tank temperature tank 1 50
TST2 45 °C [120 °F] Set tank temperature tank 2 50
tLB 2 min Loading break time 48
tRUN 15 min Circulation runtime 48
PSPEE OFF Pause speed option 51
PDELA OFF Pump delay option 51
COOL > Cooling functions
OSYC* OFF System cooling 51
OSTC OFF Tank cooling 52
OHDP* OFF Heat dump 52
ODTFT > ∆T function option 54
OTH > Thermostat function option 56
PUMP > Speed
PUMP1 OnOF Speed variant pump 1 45
PUMP2 OnOF Speed variant pump 2 45
PUMP3 OnOF Speed variant pump 3 45
MAN > Manual mode
MAN1 Auto Manual mode 1 56
MAN2 Auto Manual mode 2 56
MAN3 Auto Manual mode 3 56
MAN4 Auto Manual mode 4 56
BLPR > OFF Blocking protection 56
OTDIS > OFF Thermal disinfection option 57
OPARR > OFF Parallel relay option 58
OHQM > OFF Energy metering option 58
DATE> Enter date 60
LANG > dE Language 61
UNIT > °C Unit 60
OSDC > SD card option 61
CODE 0000 User code 64
RESET OFF Factory setting
* are blocked against each other

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The controller compares the temperature at sensor
S1 to the temperatures at sensors S2 and S4. If the
measured temperature differences are higher than
the adjusted switch-on temperature differences, the
pump (R1) will be activated and the corresponding
tank will be loaded up to the adjusted maximum
temperature via the valve (R3).Tank 1 is loaded with
priority. Heat exchange from tank 2 to tank 1 (R2) is
possible with another temperature differential func-
tion (S3-heat sink/ S5-heat source).
System 2
2-tank solar system with valve logic and heat exchange control
Note: 3-port valve normally open - tank 1 (S2)
Sensor/
terminal Designation Description
S1 TCOL Temperature collector
S2 TST1B Temperature tank 1 bottom
S3 TST1T Temperature tank 1 top
S4 TST2B Temperature tank 2 bottom
S5 TST2T Temperature tank 2 top
V40 optional: flowmeter
Relay Description
R1 Solar pump
R2 Heat exchange pump
R3 3-port valve tank 1/2
R4 optional:
Thermal disinfection
Parallel relay
Heat dump

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
ARR 1 2 System 43
ROSA 0000 16 ROSA number 60
LOAD1 > Loading 1
DT1O 6.0 K [12.0 °Ra] Switch-on temperature difference 1 44
DT1F 4.0 K [8.0 °Ra] Switch-off temperature difference 1 44
DT1S 10.0 K [20.0 °Ra] Set temperature difference 1 44
RIS1 2 K [4 °Ra] Rise 1 44
S1MAX 60 °C [140 °F] Tank maximum limitation 1 44
SMXS1 2 Sensor tank max 1 44
LOAD2 > Loading 2
DT2O 6.0 K [12.0 °Ra] Switch-on temperature difference 2 44
DT2F 4.0 K [8.0 °Ra] Switch-off temperature difference 2 44
DT2S 10.0 K [20.0 °Ra] Set temperature difference 2 44
RIS2 2 K [4 °Ra] Rise 2 44
S2MAX 60 °C [140 °F] Tank maximum limitation 2 44
SMXS2 4 Sensor tank max 2 44
LST2 ON Loading tank 2 45
COL > Collector
CEM 130 °C [270 °F] Collector emergency temperature 46
OCCO* OFF Collector cooling option 46
CMAX 110 °C [230 °F] Collector maximum temperature 46
OCMN OFF Collector minimum limitation option 46
CMIN 10.0 °C [50.0 °F] Minimum collector temperature 46
OTCO OFF Evacuated tube collector function option 46
TCST 07:00 Evacuated tube collector starting time 47
TCEN 19:00 Evacuated tube collector ending time 47
TCRU 30 s Evacuated tube collector runtime 47
TCIN 30 min Evacuated tube collector standstill interval 47
OCFR OFF Collector frost protection option 47
CFR O 4.0 °C [40.0 °F] Antifreeze temperature collector on 47
CFR F 5.0 °C [42.0 °F] Antifreeze temperature collector off 48
FRPST 1 Antifreeze tank selection 48
LLOGI > Loading logic
LOGIC PRIO Priority logic 48
PRIO1 1 Priority logic tank 1 48
OSTS OFF Tank set option 50
TST1 45 °C [120 °F] Set tank temperature tank 1 50
TST2 45 °C [120 °F] Set tank temperature tank 2 50

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
tLB 2 min Loading break time 48
tRUN 15 min Circulation runtime 48
PSPEE OFF Pause speed option 51
PDELA OFF Pump delay option 51
COOL > Cooling functions
OSYC* OFF System cooling 51
OSTC OFF Tank cooling 52
OHDP* OFF Heat dump 52
DT4 > Heat exchange
DT4O 6.0 K [12.0 °Ra] Switch-on difference 52
DT4F 4.0 K [8.0 °Ra] Switch-off difference 52
DT4S 10.0 K [20.0 °Ra] Set difference 53
RIS4 2 K [4 °Ra] Rise 53
MAX4O 60.0 °C [140.0 °F] Switch-on temperature (maximum limitation) 53
MAX4F 58.0 °C [136.0 °F] Switch-off temperature (maximum limitation) 53
MIN4O 5.0 °C [40.0 °F] Switch-on temperature (minimum limitation) 53
MIN4F 10.0 °C [50.0 °F] Switch-off temperature (minimum limitation) 53
OTH > Thermostat function option 56
PUMP > Speed
PUMP1 OnOF Speed variant pump 1 45
PUMP2 OnOF Speed variant pump 2 45
PUMP3 OnOF Speed variant pump 3 45
MAN > Manual mode
MAN1 Auto Manual mode 1 56
MAN2 Auto Manual mode 2 56
MAN3 Auto Manual mode 3 56
MAN4 Auto Manual mode 4 56
BLPR > OFF Blocking protection 56
OTDIS > OFF Thermal disinfection option 57
OPARR > OFF Parallel relay option 58
OHQM > OFF Energy metering option 58
DATE> Enter date 60
LANG > dE Language 61
UNIT > °C Unit 60
OSDC > SD card option 61
CODE 0000 User code 64
RESET OFF Factory setting
* are blocked against each other

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13
The controller compares the temperature at sensor
S1 to the temperatures at sensors S2 and S4. If the
measured temperature differences are higher than
the adjusted switch-on temperature differences, the
pump (R1 and/or R2) will be activated and the cor-
responding tank will be loaded up to the adjusted
maximum temperature at most.
System 3
2-tank solar system with pump logic
Sensor/
terminal Designation Description
S1 TCOL Temperature collector
S2 TST1B Temperature tank 1 bottom
S3 Optional sensor for measure-
ment purposes or options
S4 TST2B Temperature tank 2 bottom
S5 Optional sensor for measure-
ment purposes or options
V40
Relay Description
R1 Solar pump tank 1
R2 Solar pump tank 2
R3 optional:
Thermal disinfection
Parallel relay
Heat dump
R4

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
ARR 1 3 System 43
ROSA 0000 6 ROSA number 60
LOAD1 > Loading 1
DT1O 6.0 K [12.0 °Ra] Switch-on temperature difference 1 44
DT1F 4.0 K [8.0 °Ra] Switch-off temperature difference 1 44
DT1S 10.0 K [20.0 °Ra] Set temperature difference 1 44
RIS1 2 K [4 °Ra] Rise 1 44
S1MAX 60 °C [140 °F] Tank maximum limitation 1 44
SMXS1 2 Sensor tank max 1 44
LOAD2 > Loading 2
DT2O 6.0 K [12.0 °Ra] Switch-on temperature difference 2 44
DT2F 4.0 K [8.0 °Ra] Switch-off temperature difference 2 44
DT2S 10.0 K [20.0 °Ra] Set temperature difference 2 44
RIS2 2 K [4 °Ra] Rise 2 44
S2MAX 60 °C [140 °F] Tank maximum limitation 2 44
SMXS2 4 Sensor tank max 2 44
LST2 ON Loading tank 2 45
COL > Collector
CEM 130 °C [270 °F] Collector emergency temperature 46
OCCO* OFF Collector cooling option 46
CMAX 110 °C [230 °F] Collector maximum temperature 46
OCMN OFF Collector minimum limitation option 46
CMIN 10.0 °C [50.0 °F] Minimum collector temperature 46
OTCO OFF Evacuated tube collector function option 46
TCST 07:00 Evacuated tube collector starting time 47
TCEN 19:00 Evacuated tube collector ending time 47
TCRU 30 s Evacuated tube collector runtime 47
TCIN 30 min Evacuated tube collector standstill interval 47
OCFR OFF Collector frost protection option 47
CFR O 4.0 °C [40.0 °F] Antifreeze temperature collector on 47
CFR F 5.0 °C [42.0 °F] Antifreeze temperature collector off 48
FRPST 1 Antifreeze tank selection 48
LLOGI > Loading logic
LOGIC PRIO Priority logic 48
PRIO1 1 Priority logic tank 1 48

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Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
OSTS OFF Tank set option 50
TST1 45 °C [120 °F] Set tank temperature tank 1 50
TST2 45 °C [120 °F] Set tank temperature tank 2 50
OSE OFF Spread function option 50
DTSE 20 K [40 °Ra] Spread difference 50
SLSTR 3 Tank spread function 50
tLB 2 min Loading break time 48
tRUN 15 min Circulation runtime 48
PSPEE OFF Pause speed option 51
PDELA OFF Pump delay option 51
COOL > Cooling functions
OSYC* OFF System cooling 51
OSTC OFF Tank cooling 52
OHDP* OFF Heat dump 52
ODTFT > ∆T function option 54
OTH > Thermostat function option 56
PUMP > Speed
PUMP1 OnOF Speed variant pump 1 45
PUMP2 OnOF Speed variant pump 2 45
PUMP3 OnOF Speed variant pump 3 45
MAN > Manual mode
MAN1 Auto Manual mode 1 56
MAN2 Auto Manual mode 2 56
MAN3 Auto Manual mode 3 56
MAN4 Auto Manual mode 4 56
BLPR > OFF Blocking protection 56
OTDIS > OFF Thermal disinfection option 57
OPARR > OFF Parallel relay option 58
OHQM > OFF Energy metering option 58
DATE> Enter date 60
LANG > dE Language 61
UNIT > °C Unit 60
OSDC > SD card option 61
CODE 0000 User code 64
RESET OFF Factory setting
* are blocked against each other

16
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The controller compares the temperature at sensor
S1 to the temperatures at sensors S2 and S4. If the
measured temperature differences are higher than the
adjusted switch-on temperature differences,the pump
5
(R1 and/or R2) will be activated and the correspond-
ing tank will be loaded up to the adjusted maximum
temperature.Tank 1 is loaded with priority.
Sensor/
terminal Designation Description
S1 TCOL Temperature collector
S2 TST1B Temperature tank 1 bottom
S3 TST1T Temperature tank 1 top
S4 TST2B Temperature tank 2 bottom
S5 TST2T Temperature tank 2 top
V40 optional: flowmeter
Relay Description
R1 Solar pump tank 1
R2 Solar pump tank 2
R3 Heat exchange pump
R4 optional:
Thermal disinfection
Parallel relay
Heat dump
System 4
2-tank solar system with pump logic and heat exchange control
Heat exchange from tank 2 to tank 1 (R3) is possi-
ble with another temperature differential function
(S3- heat sink/S5 - heat source).

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17
Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
ARR 1 4 System 43
ROSA 0000 17 ROSA number 60
LOAD1 > Loading 1
DT1O 6.0 K [12.0 °Ra] Switch-on temperature difference 1 44
DT1F 4.0 K [8.0 °Ra] Switch-off temperature difference 1 44
DT1S 10.0 K [20.0 °Ra] Set temperature difference 1 44
RIS1 2 K [4 °Ra] Rise 1 44
S1MAX 60 °C [140 °F] Tank maximum limitation 1 44
SMXS1 2 Sensor tank max 1 44
LOAD2 > Loading 2
DT2O 6.0 K [12.0 °Ra] Switch-on temperature difference 2 44
DT2F 4.0 K [8.0 °Ra] Switch-off temperature difference 2 44
DT2S 10.0 K [20.0 °Ra] Set temperature difference 2 44
RIS2 2 K [4 °Ra] Rise 2 44
S2MAX 60 °C [140 °F] Tank maximum limitation 2 44
SMXS2 4 Sensor tank max 2 44
LST2 ON Loading tank 2 45
COL > Collector
CEM 130 °C [270 °F] Collector emergency temperature 46
OCCO* OFF Collector cooling option 46
CMAX 110 °C [230 °F] Collector maximum temperature 46
OCMN OFF Collector minimum limitation option 46
CMIN 10.0 °C [50.0 °F] Minimum collector temperature 46
OTCO OFF Evacuated tube collector function option 46
TCST 07:00 Evacuated tube collector starting time 47
TCEN 19:00 Evacuated tube collector ending time 47
TCRU 30 s Evacuated tube collector runtime 47
TCIN 30 min Evacuated tube collector standstill interval 47
OCFR OFF Collector frost protection option 47
CFR O 4.0 °C [40.0 °F] Antifreeze temperature collector on 47
CFR F 5.0 °C [42.0 °F] Antifreeze temperature collector off 48
FRPST 1 Antifreeze tank selection 48
LLOGI > Loading logic
LOGIC PRIO Priority logic 48
PRIO1 1 Priority logic tank 1 48
OSTS OFF Tank set option 50
TST1 45 °C [120 °F] Set tank temperature tank 1 50
TST2 45 °C [120 °F] Set tank temperature tank 2 50
OSE OFF Spread function option 50

18
en-US/CA
Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
DTSE 20 K [40 °Ra] Spread difference 50
SLSTR 3 Spread function option 50
tLB 2 min Loading break time 48
tRUN 15 min Circulation runtime 48
PSPEE OFF Pause speed option 51
COOL > Cooling functions
OSYC* OFF System cooling 51
OSTC OFF Tank cooling 52
OHDP* OFF Heat dump 52
DT4 > Heat exchange
DT4O 6.0 K [12.0 °Ra] Switch-on difference 52
DT4F 4.0 K [8.0 °Ra] Switch-off difference 52
DT4S 10.0 K [20.0 °Ra] Set difference 53
RIS4 2 K [4 °Ra] Rise 53
MAX4O 60.0 °C [140.0 °F] Switch-on temperature (maximum limitation) 53
MAX4F 58.0 °C [136.0 °F] Switch-off temperature (maximum limitation) 53
MIN4O 5.0 °C [40.0 °F] Switch-on temperature (minimum limitation) 53
MIN4F 10.0 °C [50.0 °F] Switch-off temperature (minimum limitation) 53
OTH Thermostat function option 56
PUMP > Speed
PUMP1 OnOF Speed variant pump 1 45
PUMP2 OnOF Speed variant pump 2 45
PUMP3 OnOF Speed variant pump 3 45
MAN > Manual mode
MAN1 Auto Manual mode 1 56
MAN2 Auto Manual mode 2 56
MAN3 Auto Manual mode 3 56
MAN4 Auto Manual mode 4 56
BLPR > OFF Blocking protection 56
OTDIS > OFF Thermal disinfection option 57
OPARR > OFF Parallel relay option 58
OHQM > OFF Energy metering option 58
DATE> Enter date 60
LANG > dE Language 61
UNIT > °C Unit 60
OSDC > SD card option 61
CODE 0000 User code 64
RESET OFF Factory setting
* are blocked against each other

en-US/CA
19
The controller compares the temperature at sensor
S1 to the temperatures at sensors S2, S4 and S5. If
the measured temperature differences are higher than
the adjusted switch-on temperature differences, the
pump (R1) will be activated and the corresponding
tank will be loaded up to the adjusted maximum tem-
perature via the valves (R3, R4). In this system, the
desired tank sequence can be adjusted. Depending on
the valve type used, the corresponding valve logic has
to be selected.
System 5
3-tank solar system with valve logic and priority logic
Ventillogik 1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Sensor/
terminal Designation Description
S1 TCOL Temperature collector
S2 TST1B Temperature tank 1 bottom
S3 Optional sensor for measure-
ment purposes or options
S4 TST2B Temperature tank 2 bottom
S5 TST3B Temperature tank 3 bottom
V40 Optional sensor for measure-
ment purposes or options
Relay Description
R1 Solar pump tank 1
R2
R3 Valve tank 1/2, 3
R4 Valve tank 2/3
Ventillogik
1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Ventillogik 1
2
3
4
Durchflussrichtung
im stromlosen Zustand
Valve logic
Flow direction when the
valve is normally open

20
en-US/CA
Adjustment channels
Channel Sub channel 1 Sub channel 2 Factory setting Change to Description Page
ARR 1 5 System 43
ROSA 0000 225 ROSA number 60
VLOG 1 Valve logic 60
LOAD1 > Loading 1
DT1O 6.0 K [12.0 °Ra] Switch-on temperature difference 1 44
DT1F 4.0 K [8.0 °Ra] Switch-off temperature difference 1 44
DT1S 10.0 K [20.0 °Ra] Set temperature difference 1 44
RIS1 2 K [4 °Ra] Rise 1 44
S1MAX 60 °C [140 °F] Tank maximum limitation 1 44
SMXS1 2 Sensor tank max 1 44
LOAD2 > Loading 2
DT2O 6.0 K [12.0 °Ra] Switch-on temperature difference 2 44
DT2F 4.0 K [8.0 °Ra] Switch-off temperature difference 2 44
DT2S 10.0 K [20.0 °Ra] Set temperature difference 2 44
RIS2 2 K [4 °Ra] Rise 2 44
S2MAX 60 °C [140 °F] Sensor tank max 2 44
LST2 ON Loading tank 2 45
LOAD3 Loading 3
DT3O 6.0 K [12.0 °Ra] Switch-on temperature difference 3 44
DT3F 4.0 K [8.0 °Ra] Switch-off temperature difference 3 44
DT3S 10.0 K [20.0 °Ra] Set temperature difference 3 44
RIS3 2 K [4 °Ra] Rise 3 44
S3MAX 60 °C [140 °F] Sensor tank max 3 44
LST3 ON Loading tank 3 45
COL > Collector
CEM 130 °C [270 °F] Collector emergency temperature 46
OCCO* OFF Collector cooling option 46
CMAX 110 °C [230 °F] Collector maximum temperature 46
OCMN OFF Collector minimum limitation option 46
CMIN 10.0 °C [50.0 °F] Minimum collector temperature 46
OTCO OFF Evacuated tube collector function option 46
TCST 07:00 Evacuated tube collector starting time 47
TCEN 19:00 Evacuated tube collector ending time 47
TCRU 30 s Evacuated tube collector runtime 47
TCIN 30 min Evacuated tube collector standstill interval 47
OCFR OFF Collector frost protection option 47
CFR O 4.0 °C [40.0 °F] Antifreeze temperature collector on 47