Altek SR1128 User manual

Operating manual of Controller SR1128
For split pressurized solar hot water system

SR1128 operation manual
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Content
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.................................................................................................... 4
1.5 Description of symbols ........................................................................................... 4
2. Overview.................................................................................................................. 4
2.1 Introduction of controller ......................................................................................... 4
2.2 Scope of delivery.................................................................................................... 5
2.3 Technical data ........................................................................................................ 5
3. Installation................................................................................................................ 6
3.1 Installing controller.................................................................................................. 6
3.2 Wire arrangement................................................................................................... 6
3.3 Wire connection...................................................................................................... 7
3.4 Menu structure ....................................................................................................... 8
3.5 Menu description.................................................................................................... 9
3.6 System description............................................................................................... 10
1 collector array- 1tank -1 circuit pump-back-up heater............................................... 10
4. Function operation and parameter setup (user grade) .............................................11
4.1 Set time/week........................................................................................................11
4.2 tHET Timing Heating .............................................................................................11
5. Function operation and parameter setup (engineer grade)...................................... 15
5.1 Access main menu ............................................................................................... 15
5.2 DT Temperature difference................................................................................... 15
5.3 TEMP Temperature............................................................................................... 16
5.3.1 EMOF Collector maximum switch-off temperature (for collector emergency close
function)..................................................................................................................... 17
5.3.2 EMON Collector maximum switch-on temperature (for collector emergency close
function)..................................................................................................................... 18
5.3.3 CMX Maximum limited collector temperature (collector cooling function) ........... 18
5.3.4 CMN low temperature protection of collector...................................................... 19
5.3.5 CFR frost protection of collector......................................................................... 20
5.3.6 REC Storage re-cooling function........................................................................ 20
5.3.7 Maximum temperature of tank 1 ........................................................................ 21
5.4 PUMP circuit pump speed adjust set .................................................................... 22
5.4.1 DTS Standard temperature difference for circulation pump 1 (speed adjusting) . 22
5.4.2 RIS Gain for circulation pump 1 (speed adjusting) ............................................. 23

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5.5 OHQM Thermal energy measuring....................................................................... 23
5.5.1 FMAX Flow rate................................................................................................. 24
5.5.2 MEDTType of heat transfer liquid...................................................................... 25
5.5.3 MED% Concentration of heat transfer liquid ...................................................... 25
5.6 INTV Pump interval function................................................................................. 25
5.6.1 ISTAR Turn-on time set for pump interval running function................................. 26
5.6.2 IEND Turn-off time set for pump interval running function .................................. 26
5.6.3 ISTP Pump interval time.................................................................................... 26
5.6.4 IRUN Pump running time................................................................................... 27
5.7 FUN Auxiliary function .......................................................................................... 27
5.7.1 DVWGAnti legionnaires' function ...................................................................... 27
5.8 OSDC SD card data save function........................................................................ 28
5.8.1 OSDC Card function switch-on and off............................................................... 28
5.8.2 LOGI Data save intervals................................................................................... 28
5. 9 UNIT Display unit oC and switches.................................................................. 29
5.10 HND Manual control ........................................................................................... 29
5.11 REST Recovery to factory set............................................................................. 30
5.12 Password set...................................................................................................... 30
6. Button function....................................................................................................... 31
6.1 Holiday function.................................................................................................... 31
6.2 Manual heating..................................................................................................... 32
6.3 Temperature query function.................................................................................. 32
7 Protection function................................................................................................... 33
7.1. Memory protection............................................................................................... 33
7.2 Screen protection................................................................................................. 33
7.3 pump idling protection .......................................................................................... 33
8. Trouble shooting..................................................................................................... 34
8.1 Trouble protection................................................................................................. 34
8.2 Trouble checking .................................................................................................. 34
9. Quality Guarantee .................................................................................................. 35
10. Accessories.......................................................................................................... 36

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1. Safety information
1.1 Installation and commissioning
xWhen laying cables, please ensure that no damage occurs to any of the constructional
fire safety measures presented in the building.
xThe controller must not be installed in rooms where easily inflammable gas mixtures are
present or may occur.
xThe permissible environmental conditions can’t be exceeded at the site of installation.
xBefore connecting the device, make sure that the energy supply matches the
specifications that controller requires.
xAll devices connected to the controller must conform to the technical specifications of
the controller.
xAll 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.
xConnecting and /or all operations that require opening the regulator (e.g. changing the
fuse) are only 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, it should be sure to observe the appropriate installation instructions
provided by each manufacturer. Only trained professional personnel may perform
installation, electrical connection, commissioning and maintenance of the device. 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. Moreover we do not take over
liability for patent infringements or infringements –occurring in connection with the use of
this controller- on third parties rights. The manufacturer preserves the right to put changes
to product, technical date or installation and operation instructions without prior notice. As
soon as it becomes evident that safe operation is no longer possible (e.g. visible damage).

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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.
2. Overview
2.1 Introduction of controller
xLCD display
x4 sensor inputs
x1 relay output
x1 PWM output for speed control of pump
xData saved on SD card ( Picture 1, 2, 3)
xRS485 remote control( Picture 4)
xTiming and temperature set point control function
xEnergy saved on/off operation model
Picture1 Picture2

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Picture3 Picture4
2.2 Scope of delivery
x1 x controller
x1 x user manual
x2 x screw and dowel
x1 x PT1000 sensor (φ6*50mm,length of cable 1.5 meter˅
x2 x NTC10K˄φ6*50mm, length of cable 3 meter˅
x1 x bag of strain relief
2.3 Technical data
xMaterial of cases: ABS
xAvailable ambient temperature: 0 ... 40oC
xDimensions: 188 x 138 x 43 mm
xMounting: on wall or in the electrical cases
xOperation button: 6 operation buttons on panel
xFunctions: controller used in solar hot water system and solar heating system, has
functions like temperature difference control, thermal energy measuring, accumulated
running time of solar circuit pump, collector interval function, thermostator, storage
layer heated , priority logic, back-up heating, heat transferring, Anti-Legionella function,
PWM pump speed etc.
xCommunication port: SD card groove.
xPower supply: 100 ... 240V ~, 50 ... 60 H z
xPower consumption :˘1W
xAccuracy of temperature measuring : ±2oC
xRange of collector temperature measuring: -10- 200oC
xRange of tank or pipe temperature measuring: 0-110oC
xInputs: 1 x Pt1000 sensor (≤500oC) for collector (silicon cable≤280oC),
3 x NTC10K, B3950 sensor (≤135oC) for tank, (PVC cable ≤105oC),

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1 x RS485 remote control connection
xOutputs˖1 PWM output˄≤200W˅; 1 relay output ( each available power≤300W˅
xAmbient temperature˖-10-50oC
xWater proof grade˖IP40
Note: SD card isn’t included within the delivery scope of controller.
3. Installation
Controller can only be installed indoors, far away from dangerous place and away from the
electromagnetic field.
3.1 Installing controller
Note: the controller can only be mounted in an area having an adequate level of protection.
►Determine the mounting site of controller.
►Drill the upper fixing hole on the wall.
►Fasten a screw.
►Move the terminal cover
►Hang the base plate on the position ķ( showed in picture)
►Mark the position of 2 bottom holes ĸ
►Remove the base plate
►Drill the bottom fixing hole
►Re-hang the base plate on screw ķ
►Fasted screw on ĸand fix base plate.
3.2 Wire arrangement
Depending on the type of installation, the cables may enter the controller through the rear
hole of the case A or the lower side hole of the case B.
Cable comes from the rear hole A: Remove the plastic flaps from the rear side of the case
using an appropriate tool.
Cable comes from the below hole B: 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 C provided.

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3.3 Wire connection
Before opening the terminal, please be sure to switch-off the power and pay
attention to the local electricity supply rules.
Input Ports:
Inputs T1˖For PT1000 temperature sensor, used for measuring the temperature of collector
and measuring the produced thermal energy.
Inputs T2T4˖for NTC10K, B=3950 temperature sensor, used for measuring the
temperature of storage or pipe.
VBus (485): for RS485 remote control connection.
zAdvice regarding the installation of temperature sensors
¾Only original factory enclosed Pt1000 temperature sensors are approved for use with
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 280oC,
not necessary to distinguish the positive and negative polarity of the sensor connection.
¾Only original factory enclosed NTC10K, B=3950 temperature sensors are approved for
use with tank and pipe, it is equipped with 1.5meter PVC cable, and they are
temperature resistant up to 105oC, not necessary to distinguish the positive and
negative polarity of the sensor connection.
¾All sensor cables carry low voltage, and to avoid inductive effects, must not be laid
close to 230 volt or 400-volt cables (minimum separation of 100mm)
¾If 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.
¾Sensor cables may be extended to a maximum length of ca. 100 meter, when cable’s
length is up to 50m, and then 0.75mm2 cable should be used. When cable’s length is
up to 100m, and then 1.5mm2 cable should be used.

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zOutput ports
Input Ports: Input ports L, N is power connection terminal, please connect correctly.
is Ground line terminal.
Output P1˖Semiconductor relay (SCR relay), for solar circuit pump, also suitable for RPM
(speed) control; Max. Switching current: 1A.
Output H1˖for by-pass circuit pump or valve, electromagnetic relay, max. switching current
3.5A, R1 ports are always open
Note: Depending on the solar system selection, pump and sensors should be connected to
the controller are different, all wires should be installed in protection pipe.
3.4 Menu structure
Submenu:
Through submenu, user can set the parameter as desired value, please check it carefully.

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3.5 Menu description
Code
˄
Main menu
˅
Code
(Submenu)
Menu Description
DT
For set the operation temperature difference
TEMP
For set correlative temperatures
EMOF
The maximum switch-off temperature of collector
EMON
The maximum switch-on temperature of collector
CMX
The maximum temperature of collector
(Collector cooling function)
CMN
Low temperature protection of collector
CFR
Frost protection of collector
REC
Tank recooling function
SMX1
Maximum temperature of tank1
PUMP
For set the speed parameters of circuit pump
nMIN
Speed adjust of circuit pump (RPM control)
DTS
Standard temperature difference of pump
(for speed adjust of circuit pump )
RIS
Increase scale of pump (for speed adjust of
circuit pump )
OHQM
For thermal energy measuring
FMAX
Flow rate
MEDT
Type of heat transfer liquid
MED%
Concentration of heat transfer liquid
INTV
For timing function
ISTAR
Switch-on time of timing function
IEND
Switch-off time of timing function
IRUN
Pump interval run
-on time
ISTP
Pump interval run
-off time
FUN
Auxiliary functions
DVWG
Anti legionnaires' function
OSDC
SD card function
LOGI
Data save interval ( in minute)
NOCRD
FAT16
FAT32
No card in groove
Memory < 2G
Memory > 2G
RTIME
left time available for saving data ( in day)

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FSYS
LOGG
Error on system files
Possible to log
UNIT
Celsius and Fahrenheit temperature switch
HDN
Manual controlling
REST
Recovery to factory set
PASS
Password set
3.6 System description
Note: storage temperature sensor T3 is optional sensor, if this sensor is not installed on the
upper part of the storage, controller will adopt the temperature signal from sensor T2
installed on the bottom part of storage to control back-up heater or circuit pump.
1 collector array- 1tank -1 circuit pump-back-up heater
System description:
Controller compares the temperature between collector T1 and storage T2 ( bottom part), if
the temperature difference ˄DT˅rises up to the preset switch-on (ΔT1)or is over it, circuit
pump P1 is triggered , and then storage is heated until DT drops to the switch-off DT or
when the storage temperature T3 rises up to its preset maximum temperature. Then circuit
pump P1 is ceased.
Back-up heating: ( see details at tHET timing heating menu)
With the preset heating time section, if tank temperature (T3) drops to the switch-on
temperature of heating, then back-up heat resource H1 is triggered automatically, when
tank temperature T3 rises up to the preset switch-off temperature, then output H1 is ceased.
T1: Temperature sensor on collector
T2: Temperature sensor on the bottom
part of tank
T3: Temperature sensor on the top part
of tank (optional)
T4˖Sensor for thermal energy
measuring function, installed on the flow
pipe to collector(not included within
delivery scope)
P1: Solar circuit pump
H1˖Back-up heater

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4. Function operation and parameter setup (user grade)
4.1 Set time/week
►Press “SET”button, “TIME”displays on the screen,
►Repress “SET”button, hour selection area “00” blinks on the display screen.
►Press “+” “-”button to set hour of clock
►Press “SET”button again; minute area“00”blinks
►Press “+” “-”button to set minute of clock.
►Press “SET”again, week area “MO” blinks
►Press “+” “-”button to set week.
►Press “SET”again, “DAY/MONTH/YEAR”area “Year” blinks
►Press “+” “-”button to set year.
►Press “SET”again, “Month”blinks
►Press “+” “-”button to set month.
►Press “SET”again, ĀDAY” blinks
►Press “+” “-”button to set day.
►Press “ESC”button to exit set program, or wait for 20 seconds to
exit program automatically. The set parameter values of time and
week are saved automatically,
4.2 tHET Timing Heating
Description:
Electrical heater, gas boiler or oil boiler can be integrated into solar system used as back-up
of system, and they can be triggered automatically at preset schedule by preset
temperature. Within a preset schedule, when the temperature (T3) of top part of tank
drops below the preset switching-on temperature of this function, back-up heating H1 starts
to work, when T3 rises up to the preset turning off temperature, back-up heating is stopped.
Within 24 hours, three time sections can be set with this controller.
Factory set:
The first schedule: back-up heating function starts at 4:00 and ends at 5:00 am. Within this
time section, default switch-on temperature is 40oC; default switch-off temperature is 45oC.
The second schedule: starts at 10:00 and ends also at 10:00 am, it means no back-up
heating in this time.
The third schedule: back-up heating function starts at 17:00 and ends at 22:00 pm. Within
this time section, default switch-on temperature is 50oC; default switch-off temperature is
Code
Meaning
MO
Monday
TU
Tuesday
WE
Wednesday
TH
Thursday
FR
Friday
SA
Saturday
SU
Sunday

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55oC.
The switch-on temperature adjustable range: 10oC ~ (OFF-2oC)
The switch-off temperature adjustable range: (ON+2 oC) ~ 80oC
If you want to shut off one timing heating, then you can set the turning on time and turning
off time with a same value (for example, the second time section no this function, then you
can set turning on/off time is 10:00 ~ 10:00)
When time is outside of the preset schedule, back-up heating doesn’t work automatically
even when the tank temperature drops to the switch –on temperature of heating.
Note:
xWhen there is no sensor installed in the top part of tank (no T3 sensor), controller will
take the signal of T2 (sensor in bottom of tank) automatically to control this function.
xThe time in this controller is 24 hours model, when you set schedule, the switch-off
time of heating should be larger than switch-on time. For example: if you set the
switch-on time of heating is at 17:00, but switch-off time of heating is 6:00, then this
setting doesn’t take effect, that means within this time section, heating function doesn’t
work. The correct set is like flowing: it should be divided into two time sections, one
time section is from 17:00 to 23:59, the other time section is from 00:00 to 06:00.
Setup steps: under standby,
►Press “SET”button, “tHET”displays on the screen.
►Repress “SET”button to access “tHET”program
menu.
►Repress “SET”button again, to set parameters of
“tHET”, “tH 1o 04:00” displays on the screen, “04” of
hour time blinks on screen, the switch-on time and
temperature for the first schedule of heating function
can be set.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time
blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET”button, temperature “40ć” blinks on
screen.
►Press “”“”button, to set the switch-on temperature
of heating.
►Then, press “ESC”to exit this submenu.

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►Press “+”button, “tH 1F 05:00” displays on the screen, to access the submenu of the
switch-off time and temperature for the first schedule of heating function.
►Press “SET”button again, “05” of hour time blinks on screen.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET” button, temperature “45ć” blinks on screen.
►Press “”“”button, to set the switch-off temperature of heating.
►Then, press “ESC”to exit this submenu, or wait for 20 seconds to exit automatically, the
parameter valves are saved automatically.
--------------------------------------------------------------------------------------------------------------------------
►Press “+”button, “tH 2o 10:00”displays on the screen, to access the submenu of the
switch-on time and temperature for the second
schedule of heating function.
►Press “SET”button again, “10” of hour time blinks on
screen.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET” button, temperature “50ć” blinks on screen.
►Press “”“”button, to set the switch-on temperature of heating.
►Then, press “ESC”to exit this submenu.
►Press “+”button, “tH 2F 10:00” displays on the screen, to access the submenu of the
switch-off time and temperature for the second
schedule of heating function.
►Press “SET”button again, “10” of hour time blinks
on screen.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time
blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET” button, temperature “55ć” blinks on screen.
►Press “”“”button, to set the switch-off temperature of heating.
►Then, press “ESC”to exit this submenu, or wait for 20 seconds to exit automatically, the
parameter valves are saved automatically.

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--------------------------------------------------------------------------------------------------------------------------
►Press “+”button, “tH 3o 17:00”displays on the screen, to access the submenu of the
switch-on time and temperature for the third schedule of heating function.
►Press “SET”button again, “17” of hour time blinks
on screen.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time
blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET” button, temperature “50ć” blinks on screen.
►Press “”“”button, to set the switch-on temperature of heating.
►Then, press “ESC”to exit this submenu.
►Press “+”button, “tH 3F 22:00” displays on the
screen, to access the submenu of the switch-off time
and temperature for the third schedule of heating
function.
►Press “SET”button again, “22” of hour time blinks on screen.
►Press “+”“-”button to adjust hour of time.
►Repress “SET”button again, “00” of minute time blinks on screen.
►Press “”“”button to adjust minute of time.
►Repress “SET” button, temperature “55ć” blinks on screen.
►Press “”“”button, to set the switch-off temperature of heating.
►Then, press “ESC”to exit this submenu, or wait for 20 seconds to exit automatically, the
parameter valves are saved automatically.
--------------------------------------------------------------------------------------------------------------------------
Note: when no gas or oil boiler is connected to solar system, electrical heater can be
installed as back-up device, when electrical heater is in operation status, signal blinks
on screen, and LED light is on.
Application sample:
1 2 3

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If customer uses electrical heater as back-up, please according to the power of electrical
heater to equip corresponding safety devices like contactor and breaker with this controller,
we strongly recommend equipping with SR802 device with this controller, (SR802 detailed
technical data see paragraph spare parts)
5. Function operation and parameter setup (engineer grade)
5.1 Access main menu
Under standby, doing like following to access main menu.
►Press “SET”button, then press “+”button 3 times and wait for “PWD 0000” appears on
the screen, then repress “SET”button, the left first
digital blinks, ask for entering password, factory
default set password is “0000”
►Press “+” “-” button to enter first digital of password.
►Repress “SET” button, the second digital blinks
►Repress “+” “-” button, to enter second digital of password.
►Repeat press “SET” button, the third digital blinks
►Repress “+” “-” button, to enter third digital of password.
►Repeat press “SET” button, the forth digital blinks
►Repress “+” “-” button, to enter forth digital of password.
►Repress “SET” button, to access the main menu.
►Press “+” “-” button, select any menu you wanted.
►Press “ESC” button, you can exit main menu.
Note: default factory set password is “0000”, if you don’t set new password, just press “SET”
four times, then you can access main menu interface
5.2 DT Temperature difference
Description:
Solar circuit pump P1 is triggered by the temperature difference function, so long as the
temperature difference between collector and storage reaches the switch-on DT, solar circuit
pump is triggered.
For example: the switch-on DT is 8oC, switch-off DT is 4oC, if the temperature on the bottom
part of storage is 20oC, then just when collector temperature rises up to 28oC, pump is
triggered, and when collector temperature drops to 24oC, pump is ceased.
Note: the switch-on/off DT of 8oC and 4oC are standard system setting according to many

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years’experience, only in special application cases it needs to be changed, (e.g. far
distance heat transferring), normally we recommend using default set. Switch-on and
switch-off DT are alternating set. To avoid mistake the minimum difference between two
temperature differences (ΔTon –ΔToff) is set as 2oC.
Setup temperature difference:
Under standby, following steps descript in paragraph 6.1 to access main menu DT
►Press “SET”button, to access settings program of main menu DT, “DT 1o 08 oC”displays
on screen, “08 o C”blinks, the first switch-on
temperature difference can be set.
►Press “+”“-”button, to adjust the value of switch-on
DT, adjustable range (OFF+2 o
C˅20 o C, factory
setting is 8oC
►Press “ESC”button to exit this setting, parameter is saved automatically.
►Press “+”button, “DT 1F 04 oC”displays on screen,
the first switch-off temperature difference can be set.
►Press “SET”button, “04oC”blinks.
►Press “+”“-”button to adjust the value of switch-off
DT, adjustable range 0oC˄ ON-2oC˅ˈfactory set is 4
oC.
►Press “ESC”to exit menu, or wait for 20 seconds to exit automatically, the setup
parameters are saved automatically.
5.3 TEMP Temperature
For solar system, the factory set parameters are for the best operation condition, which is
fully integrated into the entire solar system. But these parameters can also be set
individually to cater the special requirements, please carefully observe the operation data of
system components after setting.
Note: Parameters that can be set rely on the system design, not all the parameters can be
Following submenu can be access though TEMP main menu.

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Tem.
Code
Function of temperature
Adjustable range
Factory
set
Function
exit tem.
Paragraph
EMOF
Collector maximum switch
-
off temperature
(ON+3
oC)~ 200o
C
130
o
C
5
.3.1
EMON
Collector maximum switch
-
on temperature
80
oC ~ (OF-3o
C)
120
o
C
5
.3.2
CMX
Maximum limited collector temperature
(collector cooling function)
70
oC ~190oC
110
o
C
107
oC
5
.3.3
CMN
Low temperature protection of collector
0
oC~90oC
---
5
.3.4
CF
R
Frost protection of collector
-10
oC~10oC
---
5
.3.5
REC
Tank re
-cooling function
OFF
5
.3.6
SMX1
Maximum temperature of tank 1
2
oC~95oC
60
oC
58
oC
5.3.
7
5.3.1 EMOF Collector maximum switch-off temperature (for collector emergency close
function)
Function description:
When collector temperature rises up to this maximum switch-off limited temperature (EM),
collector emergency function is activated, solar circulation pump is stopped in order to avoid
the damage of system’s other components caused by high temperature. The adjustable
range of EMOF temperature is˄ON+3oC˅200oC, factory set is 130oC. If the temperature
of collector rises up to EMOF limited temperature, solar circuit pump is ceased, but when
collector temperature drops to the collector maximum switch-on temperature EMON˄factory
set is 120oC˅, solar circuit pump will be reset, and collector emergency close function is
deactivated.
Setup steps:
To access main menu TEMP, then select submenu EMOF, “EMOF 130oC” displays on the
screen
►Press “SET”button, parameter “130 oC” blinks.
►Press “+”“-”button, to adjust this maximum
switch-off temperature, adjust range (ON+3oC˅200
oC, factory set is 130oC
►Repress “SET”button to activate and deactivate this function, if deactivate the function,
“EMOF - - -”displays on the screen.
►Press “ESC”button to exit menu or wait for 20 seconds to exit automatically, set
parameters are saved automatically.

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5.3.2 EMON Collector maximum switch-on temperature (for collector emergency
close function)
Setup steps:
To access main menu TEMP, then select submenu
EMON, “EMO 120oC” displays on screen
►Press “SET”button, parameter “120oC” blinks.
►Press “+”“-”button, to adjust this maximum
switch-on temperature, adjust range 80oC ~ (OF-3oC),
factory set is 120oC
►Repress “SET”button to activate and deactivate this function, if deactivate the function,
“EMON - - -”displays on screen.
►Press “ESC”button to exit menu or wait for 20 seconds to exit automatically, set
parameters are saved automatically.
When these two signals of EM blink on the screen, it indicates collector
emergency close function is activated, and at this moment temperature of
tanks reaches to its maximum limited temperature
When only this signal of EM blinks on the screen, it indicates collector emergency
close function is also activated, but temperature of tank doesn’t reach to its
maximum limited temperature
5.3.3 CMX Maximum limited collector temperature (collector cooling function)
Function description:
If hot water in tank isn’t used for long time, then the capacity that solar system absorbs solar
irradiation reduces, when tank temperature rises to its preset maximal temperature, solar
circuit pump is ceased compulsively even the temperature difference is satisfied. then when
more solar irradiation shines in, as a result collector temperature will rise continuously,
temperature of collector maybe rise up to the evaporated temperature of heat fluid, this
phenomenon names collector - overheat, it should be avoided. Through set the Maximum
limited collector temperature˄collector cooling function˅it can delay the vaporization of the
heat transfer fluid. Shortly before reaching the maximum temperature of the collector, the
solar pump starts working to cool down the heat transfer fluid using the heat losses
occurring in pipelines and storage cylinder.
When collector temperature rises up to its maximal temperature, solar pump will be
triggered again even at the case that tank temperature is already to its maximal temperature.
And solar pump works until the temperature of collector drops because of this reversed

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circulation or when tank temperature rises its emergency temperature (95oC).
When displays, and blinks on the screen, it indicates that tank emergency
temperature reaches, tank temperature is ≥95ć
Setup steps:
To access main menu TEMP, then select submenu CMX, “CMX 110 oC” displays on screen
►Press “SET”button, “110 oC”blinks.
►Press “+”“-”button to adjust collector limited
maximum temperature , adjust range :˄70oC190oC˅,
Factory set is 110oC
►Press “SET”button to activate and deactivate this
function, if deactivate the function, “CMX - - -”displays on screen.
►Press “ESC”button to exit menu or wait for 20 seconds to exit automatically, set
parameters are saved automatically.
CMX signal displays on screen, it indicates that collector cooling function is activated.
5.3.4 CMN low temperature protection of collector
Description:
When the actual temperature of collector is below the preset CMN temperature, solar circuit
pump is ceased, even when the temperature difference between collector and storage
exceeds switch-on temperature difference, solar pump doesn’t work yet. When the
temperature of collector is 3oC higher than the preset CMN temperature, solar circuit pump
is standby to work, controller exits this program.
Setup steps:
To access main menu TEMP, then select submenu CMX, “CMN - - -”displays on screen,
default set is OFF.
►Press “SET” button, default off signal “- - -”blinks on
screen.
►Repress “SET” button to activate and deactivate this
function.
►Press “+”“-”button to adjust the low protection temperature of collector CMN, adjustable
range (00oC 90oC ), after activate the function, factory set is 10oC
►Press “ESC”button to exit the menu or wait for 20 seconds to exit automatically,
parameters are saved automatically.