Shuang Ri SR728C1 User manual

SR728C1 Solar Controller for Split Solar System
English Manual
Changzhou shuangri Electro Co.Ltd
2012.03.18

Operation manual
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Contents
1. Safety information ............................................................................................................................................. 3
1.1 Installation and commissioning..................................................................................................................... 3
1.2 About this manual............................................................................................................................................ 3
1.3 Liability waiver ................................................................................................................................................. 3
1.4 Important remark............................................................................................................................................. 3
1.5 Description of symbols................................................................................................................................... 3
1.6 Operation button description......................................................................................................................... 4
2. Installation........................................................................................................................................................... 4
2.1 Installing controller.......................................................................................................................................... 4
2.2 Wiring connection............................................................................................................................................ 4
2.3 Terminal connection........................................................................................................................................ 5
3. Commissioning .................................................................................................................................................. 6
3.1 Set time/week .................................................................................................................................................. 6
3.2 SCH system selection.................................................................................................................................... 6
3.3 Menu structure and description.................................................................................................................... 7
3.4 System overview............................................................................................................................................. 8
3.5 System Description......................................................................................................................................... 9
3.5.1 System 1 (SCH 01) : Standard solar system - 1 tank............................................................................ 9
3.5.2 System 2 (SCH 02) : Solar system with gas boiler as back-up......................................................... 12
3.5.3 System 3 (SCH 03) : Solar system with solid fuel boiler as back-up................................................ 15
3.5.4 System 4 (SCH04): Solar system with tank layered heated .............................................................. 18
3.5.5 System5（SCH05）： Solar system with 2 storages controlled by circuit pump............................. 21
3.5.6 System 6 (SCH06): Solar system with heat transfering between tanks........................................... 24
3.5.7 System7(SCH07): Solar system with 2 storages controlled by valve............................................... 27
3.5.8 System 8 (SCH08)：Solar system with east/west collector arrays and 1 storage ........................ 30
3.5.9 System 9 (SCH09): Solar system with heating return rise function.................................................. 33
3.5.10 System 10 (SCH10): Standard solar system with heat transferring function................................ 36
4. Display menu.................................................................................................................................................... 39
5. Access the menu and set (tHET) the parameters of timing heating function (user grade) ................ 41
5.1 Access main menu........................................................................................................................................ 41
5.2 Access submenu........................................................................................................................................... 41
5.3 Main menu - tHET timing heating............................................................................................................... 42
6. Function operation and parameter setup (experts grade)........................................................................ 45
6.1 Main menu - DT Temperature difference.................................................................................................. 45
6.2 Main menu - TEMP Temperature............................................................................................................... 46
6.2.1 EMOF Collector maximum switch-off temperature.............................................................................. 46
6.2.2 EMON Collector maximum switch-on temperature.............................................................................. 47
6.2.3 CMX Maximum limited collector temperature (collector cooling function)....................................... 47
6.2.4 CMN low temperature protection of collector........................................................................................ 48
6.2.5 CFR frost protection of collector.............................................................................................................. 49
6.2.6 REC Tank re-cooling function.................................................................................................................. 49
6.2.7 SMX1 Maximum temperature of tank 1 ................................................................................................. 50
6.2.8 SMX2 Maximum temperature of tank 2 ................................................................................................. 50
6.2.9 MAX1 Maximum switch-off temperature................................................................................................ 51
6.2.10 MIN1 Minimum switch-on temperature................................................................................................ 51
6.2.11 C_F Temperature unit switched between Celsius degree and Fahrenheit.................................... 51
6.3 Main Menu - FUNAuxiliary functions ........................................................................................................ 51
6.3.1 DVWG Anti legionnaires' function........................................................................................................... 52
6.3.2 nMIN Speed adjusting of circulation pump R1 (pump R1 RPM controlling）................................. 53

Operation manual
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6.3.3 DTS Standard temperature difference for circulation pump R1 (R1speed adjusting) ................... 53
6.3.4 RIS Gain for circulation pump R1 (R1 speed adjusting)..................................................................... 54
6.3.5 n2MN Speed adjusting of circulation pump R2 (pump R2 RPM controlling）................................ 54
6.3.6 DT2S Standard temperature difference for circulation pump R2 (R2 speed adjusting)................ 55
6.3.7 RIS2 Gain for circulation pump R2 (R2 speed adjusting)................................................................... 55
6.3.8 ODB Drain-back initialisation function.................................................................................................... 55
6.3.8.1 tDTO Drain-back switch-on condition - time period.......................................................................... 56
6.3.8.2 tFLL Drain-back filling time................................................................................................................... 56
6.3.8.3 tSTB Drain-back stabilization time ...................................................................................................... 57
6.3.8.4 OBST Back-up pump option................................................................................................................. 57
6.3.9 BYPR Bypass (high temperature)........................................................................................................... 57
6.3.10 OHQM Thermal energy measuring...................................................................................................... 58
6.3.10.1 FMAX Flow rate.................................................................................................................................... 59
6.3.10.2 MEDT Type of heat transfer liquid..................................................................................................... 59
6.3.10.3 MED% Concentration of heat transfer liquid................................................................................... 59
6.3.11 PRIO Tank priority.................................................................................................................................... 60
6.3.11.1 tRUN Pulse heating running time...................................................................................................... 60
6.3.11.2 tSTP Pulse heating standstill time (tSTP)........................................................................................ 61
6.3.11.3 OSTS tank setup option...................................................................................................................... 61
6.3.12 INTV Pump pulse function..................................................................................................................... 62
6.3.12.1 IRUN Running time of pump.............................................................................................................. 62
6.3.12.2 ISTP Standstill time of pump.............................................................................................................. 63
6.3.13 PDLY Run-on of circulation pump......................................................................................................... 63
6.3.14 BEEP Temperature sensor fault alarm ................................................................................................ 63
6.3.15 HND Manual control................................................................................................................................ 64
6.3.16 PASS Password set................................................................................................................................ 64
6.3.17 REST Recovery to the factory set........................................................................................................ 65
6.4 On/OFF button............................................................................................................................................... 65
6.5 Holiday function............................................................................................................................................. 66
6.6 Manual heating.............................................................................................................................................. 66
6.7 Temperature query function......................................................................................................................... 67
7. Protection function........................................................................................................................................... 67
7.1 Memory protection........................................................................................................................................ 67
7.2 Screen protection.......................................................................................................................................... 67
8. Trouble shooting.............................................................................................................................................. 67
8.1 Trouble protection ......................................................................................................................................... 67
8.2 Trouble checking........................................................................................................................................... 68
9. Quality Guarantee........................................................................................................................................... 69
10. Technical data................................................................................................................................................ 69
11. Delivery scope................................................................................................................................................ 69
12. Device matchable to this controller............................................................................................................ 70

Operation manual
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1. Safety information
1.1 Installation and commissioning
• When laying cables, please ensure that no damage occurs to any of the constructional fire safety
measures presented in the building.
• The controller must not be installed in rooms where easily inflammable gas mixtures are present or may
occur.
• The permissible environmental conditions can’t be exceeded at the site of installation.
• Before connecting the device, make sure that the energy supply matches the specifications that controller
requires.
• All devices connected to the controller must conform to the technical specifications of the controller.
• All operations on an open regulator are only to be conducted cleared from the power supply. All safety
regulations for working on the power supply are valid.
• Connecting and /or all operations that require opening the regulator (e.g. changing the fuse) are only to
be conducted by specialists.
1.2 About this manual
This manual describes the installation, function and operation of a solar thermal controller.
When installing the remaining components e.g. the solar collectors, pump assemblies and the storage unit,
are sure to observe the appropriate installation instructions provided by each manufacturer. Installation,
electrical connection, commissioning and maintenance of the device may only be performed by trained
professional personnel. The professional personnel must be familiar with this manual and follow the
instructions contained herein.
1.3 Liability waiver
The manufacturer cannot monitor the compliance with these instructions or the circumstances and
methods used for installation, operation, utilization and maintenance of this controller. Improper installation
can cause damages to material and person. This is the reason why we do not take over responsibility and
liability for losses, damages or cost that might arise due to improper installation, operation or wrong
utilization and maintenance or that occurs in some connection with the aforementioned. The manufacturer
preserves the right to put changes to product, technical date or installation and operation instructions
without prior notice. As long as it becomes evident that safe operation is no longer possible (e.g. visible
damage). Please immediate take the device out of operation.
Note: ensure that the device cannot be accidentally placed into operation.
1.4 Important remark
We have carefully checked the text and pictures of this manual and provided the best of our knowledge
and ideas, however inevitable errors maybe exist. Please note that we cannot guarantee that this manual
is given in the integrity of image and text, they are just some examples, and they apply only to our own
system. Incorrect, incomplete and erroneous information and the resulting damage we do not take
responsibility.
1.5 Description of symbols
Safety instruction:
The safety instructions in the manual are marked with a warning triangle. They indicate measures,
which can lead to personal injury and safety risks.
Operation steps: small triangle “►”is used to indicate operation step.
Notes: Contains important information about operation or function.

Operation manual
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1.6 Operation button description
On/off Clock Manual heating Holiday
Set Exit/Confirm Up Next
2. Installation
2.1 Installing controller
Note: the controller can only be installed in an area
having an adequate level of protection.
►choose a suitable place
►drill the top fix hole
►fasten the screw
►move the cover plate
►hang the bottom plate on position ①
►mark the position of bottom fix hole②③
►take away the bottom plate
►drill hole
►rehang the bottom plate on ①
►fasten the bottom screw on ②③position
2.2 Wiring connection
Depending on the type of installation, the cables may enter the device through the rear hole of the case ④
or the lower side hole of the case⑤
Cable come from the rear ④: remove the plastic flaps from the rear side of the case using an appropriate
tool.
Cable come from the below⑤: cut the left and right plastic flaps using an appropriate tool (e.g. knife) and
break them out of the case.
Notes: the flexible wire must be fastened on the case using the clamps ⑥provided

Operation manual
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2.3 Terminal connection
Before to open the terminal, please be sure to switch-off the power supplier and pay attention to
the local electricity supply rules.
Terminal layout
Terminal function
Terminal ports
Description
FU1
The fuse of controller, AC250V/6.3A.
Power connection ports
Input Ports:
For power connection, L is live wire，N is naught wire.
Ground
Inputs ports
To
PT1000 temperature sensor, for measuring the temperature of collector
or temperature of return pipe
T1
PT1000 temperature sensor, for measuring the temperature of collector
T2 ~ T4
NTC10K，B=3950 temperature sensor, for measuring the temperature of
storage tank and pipe
Output ports
R1
Semiconductor relay (SCR relay), also suitable for RMP control, max.
switching current 2A,
R2
Semiconductor relay (SCR relay), also suitable for RMP control, max.
switching current 2A,
H1
Electromagnetic relay and max. Switching current 3.5A, for back-up
device or 3-way electromagnetic valve.
Advice regarding the installation of temperature sensors:
Only original factory equipped Pt1000 temperature sensors are approved for using on the collector, it is
equipped with 1.5meter silicon cable and suitable for all weather conditions, the temperature sensor and
cable are temperature resistant up to 280℃, not necessary to distinguish the positive and negative polarity
of the sensor connection.
Only original factory equipped NTC10K,B=3950 temperature sensors are approved for using on tank and
pipe, it is equipped with 3 meter PVC cable, and they are temperature resistant up to 105℃, not necessary
to distinguish the positive and negative polarity of the sensor connection.
All sensor cables carry low voltage, and to avoid inductive effects, must not be laid close to 230 volt or

Operation manual
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400-volt cables (minimum separation of 100mm)
If external inductive effects are existed, e.g. from heavy current cables, overhead train cables, transformer
substations, radio and television devices, amateur radio stations, microwave devices etc, then the cables
to the sensors must be adequately shielded.
Sensor cables may be extended to a maximum length of ca. 100 meter, when cable’s length is up to 50m,
and then 0.75mm2cable should be used. When cable’s length is up to 100m, and then 1.5mm2cables
should be used.
3. Commissioning
Connect the sensors, pumps or switching valves to the controller before you connect the power
supply!
After switching on power to the controller, firstly it will ask to set the time, password and
parameters of system.
3.1 Set time/week
►press , time displays on screen, hour “00” blinks.
►Press to adjust hour
►Repress , minute “00” blinks.
►Press to adjust hour, then,
►Repress , Week “MO”blinks
►Press to adjust week
►Press to exit programm, or waiting for 20 seconds to exit
automatically. Time and week are saved automarically.
3.2 SCH system selection
Under standby status,
►Press , and then press “PWD 0000”displays and the
left figure blinks, require to enter password.(factory set
password :0000)
►Press , to enter the first figure
►Repress , the second figure blinks
►Press , to enter the second figure
►Repress , the third figure blinks
►Press , to enter the third figure
►Repress ,the forth figure blinks
Code
Week
MO
Monday
TU
Tuesday
WE
Wednesday
TH
Thursday
FR
Friday
SA
Saturday
SU
Sunday

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►Press to enter the forth figure
►Repress , access main menu, “SCH 01”displays on the screen
►Repress to enter selection program, “01”blinks, the first solar system displays on the screen
►Press , to select desired solar system (system 1-10 are available)
►Press to exit programm, or waiting for 20 seconds to exit automatically. Selected system is
saved automarically.
3.3 Menu structure and description
Menu structure
Submenu:
Through submenu, user can set the parameter as desired value, please check it carefully.

Operation manual
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3.4 System overview
System Code
System description
SCH1
Standard solar system
SCH2
Solar system with gas boiler as backup
SCH3
Solar system with solid fuel boiler as backup
SCH4
Solar system with tank layered heated
SCH5
Solar system with 2 storages controlled by circuit pump
SCH6
Solar system with external heat exchanger
SCH7
Solar system with 2 storages controlled by valve
SCH8
Solar system with east/west collector array and 1 storage
SCH9
Solar system with heating return rise function
SCH10
Standard solar system with heat transferring function

Operation manual
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3.5 System Description
3.5.1 System 1 (SCH 01) : Standard solar system - 1 tank
Description:
The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (DT 1O)
between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference
between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference
(DT 1F), or the temperature of storage tank reaches the preset maximum storage temperature （SMX1）,
then the solar circuit pump ( R1) is switched off.
Note：tank temperature sensor T3 is a optional sensor, when T3 isn’t installed in the system, controller will
take the value of sensor T2 to control the back-up heating or solar circuit pump ( T2 is used as T3
function).
Sensor inputs
Description
Relay outputs
Description
T0
Tem.sensor for thermal energy
measuring (option sensor)
R1
For Solar circuit pump R1
T1
Tem.sensor on collector
T2
Tem.Sensor on bottom of tank
H1
For back-up heating device
T3
Tem.Sensor on top of tank
(option sensor)
List of assistant functions can be used in this system (can select in FUN menu)
Sensor inputs
Description
Relay outputs
Description
R2
Option:
(OBST) : Back-up pump
(BYPA): to control high
temperature by- pass valve
Above assistant functions can be activated in menu FUN.
Example: Diagram of drain back
system with extra pump
(detailed see §6.3.8)

Operation manual
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Adjust channel
Menu
Description
Default value
Page
tHET
X
Timing heating
tHET1O
X
Switch-on time of the 1st time section of timing heating
4：00
Switch-on temperature of the 1st time section of timing heating
40℃
tHET1F
X
Switch-off time of the 1st time section of timing heating
5：00
Switch-off temperature of the 1st time section of timing heating
45℃
tHET2O
X
Switch-on time of the 2nd time section of timing heating
10：00
Switch-on temperature of the 2nd time section of timing heating
50℃
tHET2F
X
Switch-off time of the 2nd time section of timing heating
10：00
Switch-off temperature of the 2nd time section of timing heating
55℃
tHET3O
X
Switch-on time of the 3rd time section of timing heating
17：00
Switch-on temperature of the 3rd time section of timing heating
50℃
tHET3F
X
Switch-off time of the 3rdtime section of timing heating
22：00
Switch-off temperature of the 3rd time section of timing heating
55℃
PWD
X
Enter password
0000
SCH
X
Select system
01
DT1 O
X
Switch-on temperature difference
8℃
DT1 F
X
Switch-off temperature difference
4℃
TEMP
X
Temperature main menu
EMOF
X
Emergency switch-off temperature Collector
130℃
X*
Emergency switch-off temperature Collector if ODB drain-back
function is activated.
95℃
EMON
X
Emergency exit temperature collector
120℃
X*
Emergency exit temperature collector if ODB drain-back
function is activated.
85℃
CMX
X
Maximum temperature of collector
110oC
CMN
X
Minimum temperature of collector
10oC
CFR
X
Frost protection collector
OFF
REC
X
Tank recooling function
OFF
SMX1
X
Maximum temperature of tank
70℃
C_F
X
Temperature unit switch between Celsius and Fahrenheit
℃
FUN
X
Main menu of auxiliary functions
DVWG
X
Anti-legionalle function
OFF
nMIN
X
Pump speed adjusting（RPM control）
100%
DTS
X
Nominal temperature difference
8℃
RIS
X
Gain for circulation pump
1℃
ODB
X
Drain-back initialization active （option）
OFF
tDTO
X*
ODB Drain-back switch-on condition - time period
60s
tFLL
X*
ODB Drain-back filling time
5.0min
tSTB
X*
ODB Drain-back stabilization time
2.0min
OBST
S*
Back-up pump function( option)
OFF
BYPR
S
High temperature by-pass
OFF
OHQM
X
Thermal energy measuring function ( option)
OFF
FMAX
X*
Maximum flow rate
2.0L
MEDT
X*
Type of anti-freezing liquid
1
MED%
X*
Concentrate of anti-freezing liquid
40%
INTV
X
Pump pulse function
OFF
IRUN
X*
Running time of pump
15s

Operation manual
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ISTP
X*
Standstill time of pump
30min
BEEP
X
Temperature sensor fault alarm
OFF
HND
X
Manual control
HND1
X*
Manual operate output R1
OFF
HND2
X*
Manual operate output R2
OFF
HND3
X*
Manual operate output H1
OFF
PASS
X
Password set
PWDC
X*
Enter old password
PWDN
X*
Enter new password
PWDG
X*
Reenter new password
PWOK
X*
Password reset OK
REST
X
Recovery to factory default set
Symbol
Description
X
Menu is available
X*
Menu is available if the corresponding function is activated
S
Menu is specifically available in this system layout
S*
System-specific menu, only available if the corresponding function is activated

Operation manual
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3.5.2 System 2 (SCH 02) : Solar system with gas boiler as back-up
Description:
The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (DT 1O)
between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference
between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference
(DT 1F), or the temperature of storage tank reaches the preset maximum storage temperature （SMX1）,
then the solar circuit pump ( R1) is switched off.
Note：tank temperature sensor T3 is a optional sensor, when T3 isn’t installed in the system, controller will
take the value of sensor T2 to control the back-up heating or solar circuit pump ( T2 is used as T3
function).
Sensor inputs
Description
Relay outputs
Description
T0
Tem.sensor for thermal energy
measuring (option sensor)
R1
For Solar circuit pump R1
T1
Tem.sensor on collector
T2
Tem.Sensor on bottom of tank
H1
For back-up heating device
T3
Tem.Sensor on top of tank
(option sensor)
List of assistant functions can be used in this system (can select in FUN menu)
Sensor inputs
Description
Relay outputs
Description
R2
Option:
(OBST) : Back-up pump
(BYPA): to control high
temperature by- pass valve
Above assistant functions can be activated in menu FUN.

Operation manual
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Adjust channel
Menu
Description
Default value
Page
tHET
X
Timing heating
tHET1O
X
Switch-on time of the 1st time section of timing heating
4：00
Switch-on temperature of the 1st time section of timing heating
40℃
tHET1F
X
Switch-off time of the 1st time section of timing heating
5：00
Switch-off temperature of the 1st time section of timing heating
45℃
tHET2O
X
Switch-on time of the 2nd time section of timing heating
10：00
Switch-on temperature of the 2nd time section of timing heating
50℃
tHET2F
X
Switch-off time of the 2nd time section of timing heating
10：00
Switch-off temperature of the 2nd time section of timing heating
55℃
tHET3O
X
Switch-on time of the 3rd time section of timing heating
17：00
Switch-on temperature of the 3rd time section of timing heating
50℃
tHET3F
X
Switch-off time of the 3rdtime section of timing heating
22：00
Switch-off temperature of the 3rd time section of timing heating
55℃
PWD
X
Enter password
0000
SCH
X
Select system
01
DT1 O
X
Switch-on temperature difference
8℃
DT1 F
X
Switch-off temperature difference
4℃
TEMP
X
Temperature main menu
EMOF
X
Emergency switch-off temperature Collector
130℃
X*
Emergency switch-off temperature Collector if ODB drain-back
function is activated.
95℃
EMON
X
Emergency exit temperature collector
120℃
X*
Emergency exit temperature collector if ODB drain-back
function is activated.
85℃
CMX
X
Maximum temperature of collector
110oC
CMN
X
Minimum temperature of collector
10oC
CFR
X
Frost protection collector
OFF
REC
X
Tank recooling function
OFF
SMX1
X
Maximum temperature of tank
70℃
C_F
X
Temperature unit switch between Celsius and Fahrenheit
℃
FUN
X
Main menu of auxiliary functions
DVWG
X
Anti-legionalle function
OFF
nMIN
X
Pump speed adjusting（RPM control）
100%
DTS
X
Nominal temperature difference
8℃
RIS
X
Gain for circulation pump
1℃
ODB
X
Drain-back initialisation active （option）
OFF
tDTO
X*
ODB Drain-back switch-on condition - time period
60s
tFLL
X*
ODB Drain-back filling time
5.0min
tSTB
X*
ODB Drain-back stabilization time
2.0min
OBST
S*
Back-up pump function( option)
OFF
BYPR
S
High temperature by-pass
OFF
OHQM
X
Thermal energy measuring function ( option)
OFF
FMAX
X*
Maximum flow rate
2.0L
MEDT
X*
Type of anti-freezing liquid
1
MED%
X*
Concentrate of anti-freezing liquid
40%
INTV
X
Pump pulse function
OFF
IRUN
X*
Running time of pump
15s

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ISTP
X*
Standstill time of pump
30min
BEEP
X
Temperature sensor fault alarm
OFF
HND
X
Manual control
HND1
X*
Manual operate output R1
OFF
HND2
X*
Manual operate output R2
OFF
HND3
X*
Manual operate output H1
OFF
PASS
X
Password set
PWDC
X*
Enter old password
PWDN
X*
Enter new password
PWDG
X*
Reenter new password
PWOK
X*
Password reset OK
REST
X
Recovery to factory default set
Symbol
Description
X
Menu is available
X*
Menu is available if the corresponding function is activated
S
Menu is specifically available in this system layout
S*
System-specific menu, only available if the corresponding function is activated

Operation manual
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3.5.3 System 3 (SCH 03) : Solar system with solid fuel boiler as back-up
Description:
The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (DT 1O)
between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference
between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference
(DT 1F), or the temperature of storage tank reaches the preset maximum storage temperature （SMX1）,
then the solar circuit pump ( R1) is switched off.
Solid fuel boiler function:
Solar fuel boiler is controlled by output relay R2, if the temperature difference between solid fuel boiler T4
and storage tank T3 meets the switch-on DT condition ( DT2O), replay R2 is triggered. When this
temperature difference drops below the switch-off DT condition ( DT2F) , or the temperature of solid fuel
boiler T4 drops and it is 5 oC below its minimum switch-on temperature ( MIN1) , or the temperature of
storage tank reaches the preset maximum storage temperature（MAX1）, then the solar circuit pump ( R2)
is switched off.
Note：tank temperature sensor T3 is a optional sensor, when T3 isn’t installed in the system, controller will
take the value of sensor T2 to control the back-up heating or solar circuit pump ( T2 is used as T3
function).
Sensor inputs
Description
Relay outputs
Description
T0
Tem.sensor for thermal energy
measuring (option sensor)
R1
For Solar circuit pump R1
T1
Tem.sensor on collector
R2
For solid fuel boiler pump R2
T2
Tem.Sensor on bottom of tank
H1
For back-up heating device
T3
Tem.Sensor on top of tank
(option sensor)
T4
Tem. Sensor on the solid fuel
boiler

Operation manual
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Adjust channel
Menu
Description
Default value
Page
tHET
X
Timing heating
tHET1O
X
Switch-on time of the 1st time section of timing heating
4：00
Switch-on temperature of the 1st time section of timing heating
40℃
tHET1F
X
Switch-off time of the 1st time section of timing heating
5：00
Switch-off temperature of the 1st time section of timing heating
45℃
tHET2O
X
Switch-on time of the 2nd time section of timing heating
10：00
Switch-on temperature of the 2nd time section of timing heating
50℃
tHET2F
X
Switch-off time of the 2nd time section of timing heating
10：00
Switch-off temperature of the 2nd time section of timing heating
55℃
tHET3O
X
Switch-on time of the 3rd time section of timing heating
17：00
Switch-on temperature of the 3rd time section of timing heating
50℃
tHET3F
X
Switch-off time of the 3rdtime section of timing heating
22：00
Switch-off temperature of the 3rd time section of timing heating
55℃
PWD
X
Enter password
0000
SCH
X
Select system
01
DT1 O
X
Switch-on temperature difference 1
8℃
DT1 F
X
Switch-off temperature difference 1
4oC
DT2 O
S
Switch-on temperature difference 2
8℃
DT2 F
S
Switch-off temperature difference 2
4oC
TEMP
X
Temperature main menu
EMOF
X
Emergency switch-off temperature Collector
130℃
X*
Emergency switch-off temperature Collector if ODB drain-back
function is activated.
95℃
EMON
X
Emergency exit temperature collector
120℃
X*
Emergency exit temperature collector if ODB drain-back
function is activated.
85℃
CMX
X
Maximum temperature of collector
110oC
CMN
X
Minimum temperature of collector
10oC
CFR
X
Frost protection collector
OFF
REC
X
Tank recooling function
OFF
SMX1
X
Maximum temperature of tank
70℃
MAX1
S
Maximum switch-off temperature
60℃
MIN1
S
Minimum switch-on temperature
30℃
C_F
X
Temperature unit switch between Celsius and Fahrenheit
℃
FUN
X
Main menu of auxiliary functions
DVWG
X
Anti-legionalle function
OFF
nMIN
X
Pump R1 speed adjusting（RPM control）
100%
DTS
X
Nominal temperature difference 1
8℃
RIS
X
Gain for circulation pump R1
1℃
n2MN
X
Pump R2 speed adjusting（RPM control）
100%
DT2S
X
Nominal temperature difference 2
8℃
RIS2
X
Gain for circulation pump R2
1℃
ODB
X
Drain-back initialisation active （option）
OFF
tDTO
X*
ODB Drain-back switch-on condition - time period
60s
tFLL
X*
ODB Drain-back filling time
5.0min
tSTB
X*
ODB Drain-back stabilization time
2.0min

Operation manual
- 17 -
OHQM
X
Thermal energy measuring function ( option)
OFF
FMAX
X*
Maximum flow rate
2.0L
MEDT
X*
Type of anti-freezing liquid
1
MED%
X*
Concentrate of anti-freezing liquid
40%
INTV
X
Pump pulse function
OFF
IRUN
X*
Running time of pump
15s
ISTP
X*
Standstill time of pump
30min
BEEP
X
Temperature sensor fault alarm
OFF
HND
X
Manual control
HND1
X*
Manual operate output R1
OFF
HND2
X*
Manual operate output R2
OFF
HND3
X*
Manual operate output H1
OFF
PASS
X
Password set
PWDC
X*
Enter old password
PWDN
X*
Enter new password
PWDG
X*
Reenter new password
PWOK
X*
Password reset OK
REST
X
Recovery to factory default set
Symbol
Description
X
Menu is available
X*
Menu is available if the corresponding function is activated
S
Menu is specifically available in this system layout
S*
System-specific menu, only available if the corresponding function is activated

Operation manual
- 18 -
3.5.4 System 4 (SCH04): Solar system with tank layered heated
Description:
The solar circuit pump (R1) is switched on as soon as the switch-on temperature difference (DT 1O)
between the collector array (T1) and the storage tank (T2) is reached. If the temperature difference
between the collector array (T1) and storage tank (T2) drops below the switch-off temperature difference
(DT 1F), or the temperature of storage tank reaches the preset maximum storage temperature （SMX1）,
then the solar circuit pump ( R1) is switched off.
Controller monitors the temperature of collector T1 and storage tank T3, if this temperature difference rises
up to the switch-on temperature difference (DT2O), then Pump R1 is triggered, and at the same time,
T-valve R2 is triggered too, tank is heated until the temperature difference between the collector array (T1)
and storage tank (T3) drops below the switch-off temperature difference (DT 2F), or the temperature of
storage tank reaches the preset maximum storage temperature（SMX2）, then the solar circuit pump R1,
R2 are switched off.
Priority function is default to heat the upper part of tank firstly. T-Valve is controlled by output R2, ( Priority
logic detailed see 6.3.11 section)
Sensor inputs
Description
Relay outputs
Description
T0
Tem.sensor for thermal energy
measuring (option sensor)
R1
For Solar circuit pump R1
T1
Tem.sensor on collector
R2
For T-valve to heat upper part
of tank
T2
Tem.Sensor on bottom of tank
H1
For back-up heating device
T3
Tem.Sensor on top of tank

Operation manual
- 19 -
Adjust channel
Menu
Description
Default value
Page
tHET
X
Timing heating
tHET1O
X
Switch-on time of the 1st time section of timing heating
4：00
Switch-on temperature of the 1st time section of timing heating
40℃
tHET1F
X
Switch-off time of the 1st time section of timing heating
5：00
Switch-off temperature of the 1st time section of timing heating
45℃
tHET2O
X
Switch-on time of the 2nd time section of timing heating
10：00
Switch-on temperature of the 2nd time section of timing heating
50℃
tHET2F
X
Switch-off time of the 2nd time section of timing heating
10：00
Switch-off temperature of the 2nd time section of timing heating
55℃
tHET3O
X
Switch-on time of the 3rd time section of timing heating
17：00
Switch-on temperature of the 3rd time section of timing heating
50℃
tHET3F
X
Switch-off time of the 3rdtime section of timing heating
22：00
Switch-off temperature of the 3rd time section of timing heating
55℃
PWD
X
Enter password
0000
SCH
X
Select system
01
DT1 O
X
Switch-on temperature difference 1
8℃
DT1 F
X
Switch-off temperature difference 1
4oC
DT2 O
S
Switch-on temperature difference 2
8℃
DT2 F
S
Switch-off temperature difference 2
4oC
TEMP
X
Temperature main menu
EMOF
X
Emergency switch-off temperature Collector
130℃
EMON
X
Emergency exit temperature collector
120℃
CMX
X
Maximum temperature of collector
110oC
CMN
X
Minimum temperature of collector
10oC
CFR
X
Frost protection collector
OFF
REC
X
Tank recooling function
OFF
SMX1
S
Maximum temperature of bottom part of tank
70℃
SMX2
S
Maximum temperature of upper part of tank
70℃
C_F
X
Temperature unit switch between Celsius and Fahrenheit
℃
FUN
X
Main menu of auxiliary functions
DVWG
X
Anti-legionalle function
OFF
nMIN
X
Pump R1 speed adjusting（RPM control）
100%
DTS
X
Nominal temperature difference
8℃
RIS
X
Gain for circulation pump R1
1℃
OHQM
X
Thermal energy measuring function ( option)
OFF
FMAX
X*
Maximum flow rate
2.0L
MEDT
X*
Type of anti-freezing liquid
1
MED%
X*
Concentrate of anti-freezing liquid
40%
PRIO
S
Tank priority function
02
tRUN
S*
Pulse heating running time
15min
tSTP
S*
Pulse heating standstill time
02min
OSTS
S
Tank setup function
OFF
TST1
S*
Temperature bottom part of tank
45℃
TST2
S*
Temperature upper part of tank
45℃
INTV
X
Pump pulse function
OFF
IRUN
X*
Running time of pump
15s
ISTP
X*
Standstill time of pump
30min