JINYI SR881 Technical manual

Operation Instruction of Solar Pump Station
SR881
For Split Solar Hot Water System
Please read this instruction carefully!

SR881 operation instruction of solar pump station
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Contents
SR881 solar pump station installation and commissioning................................................. 3
1. Solar pump station with integrated controller.................................................................... 3
1.1 Scope of delivery................................................................................................................. 3
1.2 About this manual................................................................................................................ 3
1.3 Safety instructions............................................................................................................... 3
1.4 Station dimensions.............................................................................................................. 4
1.5 Specification of components.............................................................................................. 4
2. Mounting station .................................................................................................................... 5
3. Commissioning of station..................................................................................................... 5
3.1 Flushing and filling the solar system ................................................................................ 6
3.2 Flow check............................................................................................................................ 7
3.3 Electrical connection........................................................................................................... 7
Manual of integrated controller of solar station..................................................................... 8
1. Safety information.............................................................................................................. 8
1.1 Installation and commissioning......................................................................................... 8
1.2 About this manual................................................................................................................ 8
1.3 Liability waiver...................................................................................................................... 8
1.4 Important information.......................................................................................................... 9
1.5 Signal description................................................................................................................ 9
1.6 Button and HMI description ............................................................................................... 9
2 Overview................................................................................................................................ 10
2.1 Technical data.................................................................................................................... 10
3. Installation............................................................................................................................. 11
3.1 Terminal connection.......................................................................................................... 11
4. System description (Standard solar system with 1 tank, 1 collector field).................. 12
5. Time setup............................................................................................................................ 13
6. Function’s parameters and options................................................................................... 14
6.1 Overview of menu structure............................................................................................. 14
6.2 Menu operation description ............................................................................................. 14
6.3 Value checking and function checking........................................................................... 15
7. Functions operation and parameters setting (for user).................................................. 15
7.1 Timing heating.................................................................................................................... 15

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7.2 CIRC DHW circulation pump controlled by temperature and time ............................ 18
8. Function operation and parameter setup (engineer)...................................................... 23
8.1 PWD Password.................................................................................................................. 23
8.2 LOAD tank heating............................................................................................................ 23
8.3 COL Collector function...................................................................................................... 25
8.4 COOL Cooling function..................................................................................................... 29
8.5 AUX Auxiliary function....................................................................................................... 32
8.6 MAN Manual operation..................................................................................................... 36
8.7 BLPR Blocking protection................................................................................................ 37
8.8 OTDI Thermal Sterilization Function.............................................................................. 38
8.9 FS Flow rate monitoring and pump dry-running protection......................................... 39
8.10 UNIT C-F Switch ............................................................................................................. 41
8.11 RET Reset........................................................................................................................ 41
8.12 PASS Password set........................................................................................................ 42
8.13 Manual heating................................................................................................................ 43
8.14 ECO Economic mode..................................................................................................... 43
8.15 DHW circuit pump triggered manually......................................................................... 43
8.16 On/Off controller.............................................................................................................. 44
8.17 Holiday function............................................................................................................... 44
8.18 Manual circuit function.................................................................................................... 44
9. Protection function............................................................................................................... 45
9.1 Memory function during power failure............................................................................ 45
9.2 Screen protection.............................................................................................................. 45
10 Trouble checking ................................................................................................................ 45
11. Quality Guarantee ............................................................................................................. 46
12. Accessories........................................................................................................................ 46

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SR881 solar pump station installation and commissioning
1. Solar pump station with integrated controller
Integrated solar controller SR881
Outstanding design
Assembly with safety valve and manometer
High-Quality casing for reduce heat loses
Flow rate check
Filling and flushing connection unit
1.1 Scope of delivery
1* solar pump station
1* integrated solar controller
1* collector sensor PT1000
2* store sensor NTC10K
1* wall mounting bracket
1* accessory bag（include 2 * screw and dowel ;
2 * strain relief）
1*10A power cable
1* manual
1.2 About this manual
This solar pump station is a preinstalled and leak-tested group of fitting for transferring heat
from the collector to the store. It contains important fittings and safety devices for the
operation of the solar thermal system:
Ball valves in flow and return in combination with check valves to prevent gravity
circulation.
Flow rate check for displaying the flow rate
Manometer for displaying the system pressure
Safety valve to prevent inadmissible overpressure
Flushing and filling unit for flushing, filling and emptying the solar thermal system.
1.3 Safety instructions
The installation and commissioning of the solar station as well as the connection of
electrical components requires technical knowledge commensurate with a recognized
vocational qualification as a fitter for plumbing, heating and air conditioning technology, or a
profession requiring a comparable level of knowledge. The following must be observed

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during installation and commissioning:
The relevant regional and national regulations.
The technical and safety instructions mentioned in this manual.
Warning: risk of scalding
There is danger of steam emission with safety valves. Therefore a discharge pipe must
be connected to the safety assembly, please observe the enclosed instructions
regarding the safety valve when doing this.
The group of fittings must be installed with sufficient spacing to the collectors because
temperatures in the vicinity of the collectors can be very high. An intermediate vessel
may be necessary for installation in the attic.
It is imperative that you make sure the EPDM sealing elements of the solar pump
station do not come into contact with substances containing mineral oil. Mineral oil
products cause lasting damage to the material, whereby its sealant properties are lost.
If necessary, ask the manufacturer whether the solar fluid, fats or installation aids
contain mineral oils.
We don’t assume liability nor provide warranty for damage to solar station resulting
from sealants damaged in this way.
1.4 Station dimensions
Height ( with insulation)：420mm
Width (with insulation)：215mm
Depth (with insulation)：150mm
Distance centre to floor：1600mm
1.5 Specification of components
1.5.1 Return outlet connection (to collector): 3/4 IT
1.5.2 Safety valve: 6bar
1.5.3 Filling connection 3/4 male thread
1.5.4 Connection of expansion vessel 3/4 male thread
1.5.5 Manometer: 0-6bar
1.5.6 Non-return valve: opening pressure 200mmH2O
1.5.7 Circuit pump: Wilo 15-6 or Grundfos 15-65
1.5.8 Filling connection 3/4 male thread
1.5.9 Digital flow meter 1-16L/min (alternative mechanical flow counter2-12L/min)
1.5.10 Flow outlet connection (from tank):3/4’ IT

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1.5.11 Wire terminal of controller
1.5.12 EPP insulation case
Material:
Fitting: Brass
Seals: PTFE
Insulation: EPP, λ= 0.041W/ (m.K)
Maximum permitted operation pressure: 6Bar
Maximum permitted operation temperature:120oC
2. Mounting station
Determine the mounting site of the station.
Take the station out of packing; remove the front
half of the insulation.
Hold the enclosed wall mounting bracket against
the wall and mark the fastening holes, drill holes and insert dowels.
Fasten the wall mounting bracket to the wall with the screws.
Push the station against the wall mounting bracket, the station catches and is then
attached to the wall.
Connect the station to the solar thermal system.
Check the inlet pressure of the expansion vessel and if necessary, adjust it to the local
conditions, Pinlet(bar) = 1bar+∆ Th(m)*1/10 （∆Th=height difference between collector
and station）.
Connect the electrical components of the solar station, Attach the store and collector
sensor and connect them to the controller, plug the controller into the socket.
Tighten all nuts and screw connections.
Attach the front half of the insulation to the station.
3. Commissioning of station
Attention: Risk of scalding!
In order to prevent the boiling of solar fluid in the collectors, the system should not be
flushed or filled during periods of strong sunshine.
Attention: Risk of frost!
Solar thermal system cannot be completely emptied after flushing. There is a danger of frost
damage if water is used for flushing. Only use solar fluid to flush and fill the solar thermal
system. Use water –propylene glycol mixture as solar fluid (Maximum 50% propylene

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glycol).
3.1 Flushing and filling the solar system
Flushing and filling steps:
Disconnect the expansion vessel from the solar thermal system.
Connect the pressure hose of a flushing and filling station to the fill ball valve A of the
solar pump station
Connect the flushing hose of a flushing and filling station to the drain ball valve B of the
solar pump station
Open the filling ball valve and drain ball valve
Flush the solar thermal system using the flushing and filling station for at least
15minutes to remove all air from the system.
During the flushing, bleed the solar thermal system several times at the air stopper until
the discharged solar fluid is free of air bubbles.
Close the drain ball valve of the flushing and filling station, and continues run the filling
pump and increase the system pressure to approx.3-4 bar, system pressure can be
read from the manometer.
Close the flushing ball valve B of the solar pump station, and then close the filling valve
A，and then stop the flushing and filling station.
Check the manometer to see whether the system pressure reduces and eliminate leaks
where necessary.
Reconnect the expansion vessel to the solar thermal system.

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3.2 Flow check
The flow counter is used for measurement and display of flow rate, in order to guarantee the
flawless function of the measuring device the system must be flushed and free from foreign
substances.
Digital flow meter（1-16L/min）Fissol mechanical flow meter（2-12L/min）
3.3 Electrical connection
Warning: disconnect the controller from power supply before opening the housing!
The controller is already integrated in the station and ready to plug in, display and digital
counter are already preinstalled at factory. For maintenance or service work, it needs to take
out the controller from station, doing follows below steps:
Switch off the system, disconnect plug from
the mains.
Remove the front half of the insulation.
Unscrew the cross-recessed screw on the
front cover of controller A and remove cover B
by pulling it leftwards
Doing reverse steps to remount the controller.
For further information on electrical connection of the controller, please see manual of
controller (terminal layout).
A
B
Flow rate adjust valve
Value of flow rate

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Manual of integrated controller of solar station
1. Safety information
1.1 Installation and commissioning
When laying wires, 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 controller 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 collector (e.g. changing the
fuse) are only conducted by specialists.
1.2 About this manual
This manual describes the mounting, functions and operation of a solar controller used for a
solar hot water system, for mounting of other devices of a completed solar hot water system
like solar collector, pump station and storage, please is sure to observe the appropriate
installation instructions provided by each manufacturer. Mounting, wire connecting,
commissioning and maintenance of this controller may only be performed by the trained
professional person; the professional person should be familiar with this manual and follow
the instructions contained herein.
1.3 Liability waiver
The manufacturer can’t 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 the 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 the
third parties rights. The manufacturer preserves the right to put changes to product,
technical data or installation and operation instructions without prior notice. As soon as it

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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 can’t be
accidentally placed into operation.
1.4 Important information
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, incorrect, incomplete
and erroneous information and the resulting damage we do not take responsibility.
1.5 Signal description
Safety indication: Safety instructions in the text are marked with a warning triangle.
They indicate measures which can lead to injury of person or safety risks.
Operation steps: small triangle “►”is used to indicate operation step.
Note：contains important information about operation or functions.
1.6 Button and HMI description

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Nr.
Button
1
LCD Display screen
2
Power indication lamp
3
“On/Off”
4
“Manual Heating”
5
“Manual Circuit”
6
“Eco Mode”
7
“Holiday”
8
“Clock”
9
Downwards adjust “-”
10
“Exit”
11
“Set”
12
Upwards adjust “+”
Status Description
Code
Lighting
Blinking
Exceed the maximum temperature
of storage
SMX
Running of storage emergency
shutdown function
Running of collector emergency
shutdown function
OCEM
╋
Running of collector cooling
OCCO
Running of tank cooling function
OSTC
Start of anti-freezing function
OCFR
Running of anti-freezing function
OCFR
2 Overview
2.1 Technical data
Power supply: 100…240V ~(50…60Hz)
Rated impulse voltage: 2.5KV
Housing：Plastic ABS
Mounting：Wall mounting
Operation: 10 push buttons at the front cover
Protection type: IP40

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Note: there are 4 inputs for NTC10K, B=3950 temperature sensor, but only 2 sensors
are included in the standard delivery list; the other two should be purchased separately by
customer if necessary.
3. Installation
Note: Power can only be switched on under the control of the housing are closed
situation. The installer must make sure that the controller's IP security level is not destroyed
during the installation process.
Depending on the type installation, put the cable wires from the plastic cover behind the
access hole.
NOTE: The flexible wire must be fastened to the case using the strain-relief clamps
provided.
3.1 Terminal connection
Input ports
T1: PT1000 temperature sensor, for measuring the temperature of collector
T2 ~T5: NTC10K, B=3950 temperature sensor, for measuring temperature of tank and
pipe.
FRT: For rotary vane type electronic flowmeter
Output ports
Input Ports L, N: for power connection, L: live wire, N: zero wire, protective wire,
with 10A power plug.
Output R1: Electromagnetic relays, Max. Current: 2A
Output R2: Electromagnetic relays, Max. Current: 2A
Output R3: Electromagnetic relays, Max. Current: 2A R3
Output HR: Electromagnetic relays, designed for on/off control of back-up
heating device, Max. Current: 10A ( @AC230V, for 1500W electrical heater,

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@110VAC, for 750W electrical heater)
Advice regarding the installation of temperature sensors:
Only original factory equipped Pt1000 temperature sensors are approved for using with
the controller, it is equipped with 1.5m silicon cable and suitable for all weather
conditions, the cable is temperature resistant up to 280oC, connect the temperature
sensors to the corresponding terminals with either polarity.
Only original factory equipped NTC10K,B=3950 temperature sensors are approved for
using with tank and pipe, it is equipped with 3m PVC cable, and the cable is
temperature resistant up to 105oC, connect the temperature sensors to the
corresponding terminals with either polarity.
All 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).
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.
4. System description (Standard solar system with 1 tank, 1 collector field)
Description:
The controller calculates the temperature difference between collector sensor T1 and tank
sensor T2. If the difference is larger than or identical to the adjusted switch-on temperature
difference, the solar circulation pump (R1) will be switched on and the tank will be loaded
until the switch-off temperature difference or the maximum tank temperature is reached.

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Sensor
ports
Description
Relay
outputs
Description
T1
Collector temperature
sensor PT1000
R1
For solar circuit pump
T2
Temperature sensor on the
bottom part of tank.
NTC10K
R2
1. for DHW circuit function
（CIRC）
2.OHDP （Thermal energy
transferring, R2,R3 can be
selected）
T3
Temperature sensor on the
upper part of tank. NTC10K
T4
Temperature sensor on
DHW Pipe. NTC10K
R3
1.TIME（Timer function）
2.AH（Automatic thermostat
function
T5
Temperature sensor for
thermostat function
NTC10K
HR
For back-up heating
1. Note: when R3 output is selected for OHDP function, other two functions AH, TIME will
be closed automatically. When one of these three functions (OHDP, AH, TIME) is
activated, and then the other two will be deactivated automatically.
5. Time setup
Before switch-on the power, please connect sensor on the inputs terminal, connect
pump or on/off valve on the outputs terminal. After the power is switched-on, you can set the
time, password and parameters of system.
►Press “Clock” button, Time displays on the screen, hour
“00” blinks on the display.
►Press “+/-” button, to adjust hour
►Press “Clock” button again, minute time “00” blinks on
the display
►Press “+/-” button to adjust minute
►Press “ESC” button to save the set value
Note: In the case power to controller is switched-off, date and time will be memorized
in controller for 36 hours.

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6. Function’s parameters and options
6.1 Overview of menu structure
6.2 Menu operation description
Access main menu
►Press “SET” button to access main menu
►Press “+/-” to select menu
►Press “SET” button to enter the submenu
Access submenu
►After selecting main menu, then press “SET” button to access submenu
►Press “+/-” button to select submenu,
►Press “SET” button to enter the value adjust interface
►Press “+/-” to adjust value
Timing heating
DHW Circuit
Cool Function
Aux. Function
Digital flow
C-F Unit
Password
Manual Mode
Reset
Tank loading
Block protect
Password setup
Collector
Disinfection

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►Press “SET” or “ESC” to confirm the value you set
►Press “ESC”, exit the submenu.
Note: Enter the menu adjustment interface, if you don’t press any button within 3
minutes, screen will exit the adjustment and turn to main interface.
6.3 Value checking and function checking
Under normal running status of controller, press “ +/-“ button
to check the measured value of temperature of collector and
tank, value of flow rate (L/M) , status of thermal sterilization
function , status of auxiliary functions , running time of display
( DAYS), running time of controller ( MDAY), program version of display (SW), and program version
of main controller (SW-M)
Note:
Flow rate, thermal sterilization function, auxiliary functions can only be displayed only when
these functions are triggered.
When thermal sterilization function is running, time of thermal sterilization can be checked.
When one of any auxiliary functions is running, its corresponding signal blinks on the display.
SW: program version of display, SW-M: program version of controller.
DAYS:running time of display; MDAY:running time of controller
When you already in the interface of value checking function, if no any button is pressed
within 3 minutes, the display will return to the main interface.
7. Functions operation and parameters setting (for user)
7.1 Timing heating
Function description:
Electrical heater or gas / oil boiler is normally used as back-up heating source of a solar hot
water system. Through this timing heating function controller can keep the tank temperature
constantly. When tank temperature (T3) drops below the switch-on thermostats temperature,
back-up heating output HR is triggered, when T3 rises up to the switch-off thermostats
temperature, HR is ceased.
Set time sections and temperature for timing heating
Factory set:
The first time section: default at 4:00 to start heating, and at 5:00 to stop heating, and
the switch-on temperature of heating is 40oC，switch-off temperature is 50oC。
The second time section: default at 10:00 to start heating, and at 10:00 to stop heating,
The Third time section: default at 17:00 to start heating, and at 22:00 to stop heating,

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and the switch-on temperature of heating is 50oC，switch-off temperature is 55oC。
If you set the start time and close time with a same value, which means within this time
section, the timing heating function is switched-off. For example, at the second time section,
start time is set at 10:00, but close time is also set at 10:00.
Timing heating function is run at the preset time section, 3 time sections can be set, and
within every time section, the desired temperature may be different. The adjustable range of
switch-on temperature is 0oC ~ (OFF-2oC), switch-off temperature range is (ON+2oC) ~
95oC.
SMT Intelligent heating
At the case that solar energy is insufficient to heat the tank, in order to ensure user has
sufficient hot water, controller will check the temperature of tank automatically at the preset
time, if tank’s temperature is not reached to the desired temperature, then back-up heat
device will be triggered, and when tank’s temperature rises up to the desired value, then
back-up heat device stops.
Factory set: （impossible to be adjusted）
Default at 13:00 of the first time section to trigger the back-up heat device to heat tank
to 30oC,
Default at 14:00 of the second time section to trigger the back-up heat device to heat
tank to 35oC,
Default at 15:00 of the third time section to trigger the back-up heat device to heat tank
to 40oC,
Default at 16:00 of the forth time section to trigger the back-up heat device to heat tank
to 45oC,
Default at 17:00 of the fifth time section to trigger the back-up heat device to heat tank
to 50oC.
Menu Structure

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Main
menu
Subm
enu
Factory
set
Adjustable
range
Step
per
adjust
Description
THET
Timing heating function
THTS
S2
S2. S3
Select desired sensor of heated
tank (S3 for T3, S2 for T2)
SMT
OFF
ON/OFF
Intelligent heating Mode
tH1O
04:00 /
40℃
00:00-23:59/
0-93℃
0.5C
Switch-on time and temperature
of the first heating section
tH1F
05:00/
50℃
00:00-23:59/
2-95℃
0.5C
Switch-off time and temperature
of the first heating section
t H2O
10:00 /
40℃
00:00-23:59/
0-93℃
0.5C
Switch-on time and temperature
of the second heating section
tH2F
10:00 /
50℃
00:00-23:59/
2-95℃
0.5C
Switch-off time and temperature
of the second heating section
tH3O
17:00 /
50℃
00:00-23:59/
0-93℃
0.5C
Switch-on time and temperature
of the third heating section
tH3F
22:00 /
55℃
00:00-23:59/
2-95℃
0.5C
Switch-off time and temperature
of the
third heating section
Function setting:
►Press “SET” button to access main menu, and select THET timing heating menu.
►Press “SET” button to set parameter, firstly to select the desired sensor for the heated
tank, “THTS S2” displays on the screen.
►Press “SET” button, “S2” blinks
►Press “+/-” button to select desired sensor
►Press “SET” or “ESC” button to save the setting.
►Press “+” button to access submenu of the intelligent heating, “SMT OFF” displays on the
screen
►Press “SET” button, “OFF” blinks
►Press “+/-” button to activate this function
►Press “SET” or “ESC” button to save the setting.
►Press “SET” button to access the window of the switch-on time and temperature of the
first heating section, “th1O 04：00” displays on the screen.
►Press “SET” button, hour time “04” blinks
►Press “+/-” button to adjust hour of the switch-on time
►Press “SET” button, minute time “00” blinks
►Press “+/-” button to adjust minute of the switch-on time
►Press “SET” button, temperature “40” blinks
►Press “+/-” button to adjust the switch-on temperature

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►Press “SET” or “ESC” button to save the setting.
►Press “+” button to access the window of the switch-off time and temperature of the first
heating section, “th1F 05：00” displays on the screen
►Press “SET” button, hour time “05” blinks
►Press “+/-” button to adjust hour of the switch-off time
►Press “SET” button, minute time “00” blinks
►Press “+/-” button to adjust minute of the switch-off time
►Press “SET” button, temperature “50” blinks
►Press “+/-” button to adjust the switch-off temperature
►Press “SET” or “ESC” button to save the setting.
►Press “+” button to access the window of the switch-on time and temperature of the
second heating section, repeat above steps to set time and temperature for the second and
third heating section.
Note: definition of timing heating sign
1) Within the preset time section, if timing heating isn’t working, heating sign is
lighted on the screen
2) Within the preset time section, if timing heating is working, heating sign blinks
on the screen.
3) Out of the preset time section, heating sign doesn’t display on the screen.
7.2 CIRC DHW circulation pump controlled by temperature and time
Function description:
This controller provides an output for running DHW circulation pump, which can be
controlled by a temperature sensor, at this case, an extra circuit pump (connect to the output
R2) and an extra temperature sensor installed on the hot water return pipe (connect to the
input T4) should be installed in the system. When the temperature of DHW return is lower
than the preset switch-on temperature, circuit pump is triggered, until temperature rises up
to the switch-off temperature, pump is stopped.
2 controlling modes are designed for running DHW
circulation pump
Time controlled DHW pump within the preset 3
time sections (default Mode)
Within a time section, if DHW circulation pump is

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controlled by time, at this case, only an extra circuit pump (connect to output R2) is needed.
Pump is triggered by time, within a running time section, as default set, pump runs for 3
minutes (adjustable range 0-30 minutes) and then ceases for 15 minutes (adjustable range
0-60 minutes), same process repeated within the running time section.
Note: if the ceased time (CYCF) is set to 0 minute, it means within this time section,
circuit pump keeps running without any stop.
Default time section:
The first time section: starts at 05:00, stops at 07:00, runs 3 minutes, then stops 15
minutes
The second time section: starts at 11:00, stops at 13:00, runs 3 minutes, then stops 15
minutes
The first time section: starts at 17:00, stops at 22:00, runs 3 minutes, then stops 15
minutes

Temperature controlled DHW pump within the preset 3 time sections
within a time section, when the DHW circulation pump is
controlled by temperature, as default set, pump is
triggered when return temperature T4 is below 40oC, and
it is stopped when T4 rises up to 45oC,
There is a precondition for triggering the DHW circuit
pump (set in submenu STAT):
START ON: tank’s temperature sensor (default T3) is
2oC higher than the preset switch-off temperature, and then DHW circuit pump can be
triggered.
Note: two Modes can’t play at the same time, when time controlled Mode is selected,
then temperature controlled Mode can’t be activated.
Default time section:
The first time section: starts at 05:00, stops at 7:00, runs at 40oC，stops at 45oC
The second time section: starts at 11:00, stops at 13:00, runs at 40oC，stops at 45oC
The first time section: starts at 17:00, stops at 22:00, runs at 40oC，stops at 45oC
If it is needed to close one time section, just set the start time and stop time at a same value
(e.g. 10:00 starts, 10:00 stops)