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)