SUNFLOWER SR81Q Operation Instruction Manual
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SUNFLOWER SR81Q Operation Instruction Manual

Intelligent controller for split pressurized solar hot water system
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Operation Instruction
SR81Q
Intelligent Controller
for Split Pressurized Solar Hot Water System
Please read this instruction carefully!

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Summary of Contents for SUNFLOWER SR81Q

  • Page 1 Operation Instruction SR81Q Intelligent Controller for Split Pressurized Solar Hot Water System Please read this instruction carefully!

  • Page 2: Table Of Contents

    Instruction of SR81 Split Pressurized Solar Hot Water System 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 information ....................4 1.5 Signal description ......................4 1.6 Button and HMI description ..................
  • Page 3 Instruction of SR81 Split Pressurized Solar Hot Water System 8.5 COOL Cooling function ..................... 34 8.6 AUX Auxiliary function ....................38 8.7 MAN Manual operation ..................... 42 8.8 BLPR Blocking protection ..................43 8.9 OTDI Thermal Sterilization Function ................. 43 8.10 OPAR Parallel relays ....................

  • Page 4: Safety Information

    Instruction of SR81 Split Pressurized Solar Hot Water System 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.

  • Page 5: Important Information

    Instruction of SR81 Split Pressurized Solar Hot Water System 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.

  • Page 6: Overview

    Instruction of SR81 Split Pressurized Solar Hot Water System Button Power indication lamp “On/Off” “Clock” “Holiday” “Manual Heating” “Manual Circuit” “Eco Mode” “ESC” “SET” Upwards adjust “+” Downwards adjust “-” LCD Display screen Status Description Code Lighting Blinking Exceed the maximum temperature of storage Running of storage emergency shutdown function...

  • Page 7: Delivery List

    Note: there are 5 inputs for NTC10K, B=3950 temperature sensor, but only 4 sensors are included in the standard delivery list; the other one should be purchased separately by customer if necessary. 2.2 Delivery list  1 * SR81Q controller  1 * accessory bag  1 * user manual ...

  • Page 8: Mounting The Display Of Controller

    Instruction of SR81 Split Pressurized Solar Hot Water System 3.1 Mounting the display of controller ►Using Screw and turn it, take the display base plate out, see picture 1 ►Fixing the base on the wall with screw (see picture 2), (Note: don’t drill hole on the base plate) ►Insert the display into the base plate groove ①②, and press it tightly.

  • Page 9: Terminal Connection

    Instruction of SR81 Split Pressurized Solar Hot Water System or from hole ⑤, using a suitable tool (like knife) to cut the plastic of ⑤, and wire is connected into housing from hole ⑤. Note: wires must be fastened by fixing clamps on the position⑥. 3.5 Terminal connection Note: before opening the housing! Always disconnect the controller from power supply and obey the local electrical supply regulation.
  • Page 10 Instruction of SR81 Split Pressurized Solar Hot Water System  Output ports  Input Ports L, N: for power connection, L: live wire, N: zero wire, protective wire, with 10A power plug.  Output R1: semiconductor relay, Max. Current: 1A ...

  • Page 11: R3 Output Connection With T- Valve / Pump

    Instruction of SR81 Split Pressurized Solar Hot Water System 3.6 R3 output connection with T- valve / pump 3 wires T-Valve 2 wires T-Valve Connection with pump R3 connect with T-valve: (COM common terminal, NO always open terminal, NC always close terminal) R3 connect with pump: (COM common terminal, NO always open terminal) 3.7 Connection with high efficiency pump...
  • Page 12 Instruction of SR81 Split Pressurized Solar Hot Water System  Wire connection with high efficiency pump Signal wire 1 of high efficiency pump is connected with GND terminal of controller Signal wire 2 of high efficiency pump is connected with PWM terminal of controller Signal wire 3 of high efficiency pump is not connected with controller Some pumps connections are available as above, for example: Wilo Yonos PARA ST15/7.0 PWM2 M...

  • Page 13: System Description (Standard Solar System With 1 Tank, 1 Collector Field)

    Instruction of SR81 Split Pressurized Solar Hot Water System 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.

  • Page 14: Time Setup

    Instruction of SR81 Split Pressurized Solar Hot Water System 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.

  • Page 15: Menu Operation Description

    Instruction of SR81 Split Pressurized Solar Hot Water System 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 “+/-”...

  • Page 16: Functions Operation And Parameters Setting (For User)

    Instruction of SR81 Split Pressurized Solar Hot Water System function is running, corresponding signal blinks on the screen  SW: screen version, SW-M: controller version  DAYS: running time of display, MDAY: running time of controller  Thermal energy is showed as kWh under kWh channel, is showed as MWh under MWh channel, total accumulation of thermal energy produced by solar system is the plus of kWh + MWh ...
  • Page 17 Instruction of SR81 Split Pressurized Solar Hot Water System 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.
  • Page 18 Instruction of SR81 Split Pressurized Solar Hot Water System Select desired sensor of heated THTS S2. S3 tank (S3 for T3, S2 for T2) ON/OFF Intelligent heating Mode 04:00 / 00:00-23:59/ Switch-on time and temperature tH1O 40℃ 0-93℃ of the first heating section 05:00/ 00:00-23:59/ Switch-off time and temperature...

  • Page 19: Circ Dhw Circulation Pump Controlled By Temperature And Time

    Instruction of SR81 Split Pressurized Solar Hot Water System ► 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 ►...
  • Page 20 Instruction of SR81 Split Pressurized Solar Hot Water System Within a time section, if DHW circulation pump is 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...
  • Page 21 Instruction of SR81 Split Pressurized Solar Hot Water System  The second time section: starts at 11:00, stops at 13:00, runs at 40 C，stops at 45  The first time section: starts at 17:00, stops at 22:00, runs at 40 C，stops at 45 If it is needed to close one time section, just set the start time and stop time with a same value (e.g.
  • Page 22 Instruction of SR81 Split Pressurized Solar Hot Water System STAT ON/OFF Tank temperature (T3) C higher than the preset switch-off DHW circuit temperature. ℃ ℃ CYCO Switch-on temperature 5-53℃/1-30min or running time /3min /1min ℃ ℃ CYCF Switch-off temperature 7-55℃/0-60min or stop time /15min /1min...
  • Page 23 Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “+” button, “TIME ON” displays on the screen (time control mode, default as on) ►Press “SET”, “ON” blinks ►Press “+/-” button to deactivate this function ► Press “SET” or “ESC” button to save the setting. ►Press “+”...

  • Page 24: Function Operation And Parameter Setup (Engineer)

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET”, time minute “00” blinks, ► Press “+/-” to adjust minute of the circuit stop time. ► Press “SET” or “ESC” button to save the setting. ►Press “+” to access the start time of the second time section, repeat above step to set start and stop time for second and third time section.

  • Page 25: Load Tank Heating

    Instruction of SR81 Split Pressurized Solar Hot Water System If no password is set, then just press “SET” five times to access main menu directly. 8.2 LOAD tank heating Function description:  △T control logic The controller works as a standard temperature differential controller. If the temperature reaches or exceeds the switch-on temperature difference (DTO), the pump R1 switches on.
  • Page 26 Instruction of SR81 Split Pressurized Solar Hot Water System selectable (Default is 2 C), for example, when tank maximum temperature is set to 70 then at 68 C, Maximum tank temperature protection function is deactivated automatically. Menu Structure Main Subme Factor Adjustabl Step per...

  • Page 27: Col Collector Function

    Instruction of SR81 Split Pressurized Solar Hot Water System ► Press “SET” or “ESC” to save the setting ► Press “+”, “DTF 4K” displays on the screen ► Press “SET”, “4K” blinks ► Press “+/-”, to adjust the switch-off temperature of solar circuit pump ►...
  • Page 28 Instruction of SR81 Split Pressurized Solar Hot Water System Warning! Risk of injury! Risk of system damage by pressure surge! If water is used as the heat transfer fluid in pressure systems, water will boil at 100 ° C. Then do not set the collector limit temperature higher than 95 °...
  • Page 29 Instruction of SR81 Split Pressurized Solar Hot Water System around the freezing point only for a few days.  OTCO Tube collector function This function is designed for the system in which the position of collector sensor is not ideal; purpose is to improve the system efficiency (for example for system use tube collector), this function runs just within a set time section, controller will intermittent trigger solar pump (R1) to push the hot water from tube collector to the position of sensor, to avoid the delay...
  • Page 30 Instruction of SR81 Split Pressurized Solar Hot Water System OCCO Collector cooling function on/off CMAX 110℃ 70-160℃ 1℃ Temperature of collector cooling ( hysteresis 5 OCMI Collector minimum temperature function on/off CMIN 10℃ 10-90℃ 1℃ Temperature of collector minimum function OCFR Anti-freeze function on/off CFRO...
  • Page 31 Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “ESC” to return to previous menu OCCO (Collector cooling function) setup ►Select OCCO submenu, “OCCO” displays on the screen ►Press “SET”, “OCEM OFF” displays on the screen ►Press “SET”, “OFF” blinks on the screen ►Press “+/-”, to activated this function, “OCEM ON”...

  • Page 32: Pump Pump Control Mode

    Instruction of SR81 Split Pressurized Solar Hot Water System OTCO (Tube collector function) setup ►Select OTCO submenu, “OTCO” displays on the screen ►Press “SET”, “OTCO OFF” displays on the screen ►Press “SET”, “OFF” blinks on the screen ►Press “+/-”, to activate this function, “OTOC ON” displays on the screen ►Press “+”, “TCST 07:00”...
  • Page 33 Instruction of SR81 Split Pressurized Solar Hot Water System PULS: Burst control via semiconductor relay  Adjustment for high-efficiency pump (HE pump) • PSOL: PWM profile solar pump • PHEA: PWM profile heating pump • 0-10: Speed control via 0 - 10 V signal Note: 1.
  • Page 34 Instruction of SR81 Split Pressurized Solar Hot Water System allocated to output R1. 4. When a output is used to control a device without pump speed control (e.g. to control a motored valve), then the pump speed of the corresponding relay should be set with a value of 100% or set the control type is ONOF to deactivate the pump speed control function.

  • Page 35: Cool Cooling Function

    Instruction of SR81 Split Pressurized Solar Hot Water System Setup function: ►Select PUMP submenu, ►Press “SET”, “ONOF ON” displays on the screen ►Press “+/-”, to select pump type “PULS, PSOL, PHEA, 0-10V ►After select the pump type, press “SET” to enter the pump type ►Press “SET”, “OFF”...
  • Page 36 Instruction of SR81 Split Pressurized Solar Hot Water System below the tank temperature and downwards to the switch-on temperature difference DTCO of this cooling function, then system will be activated in order to cool down the tank by releasing the energy through the collector. If tank cooling function is activated, sign blinks on the screen Note: if tank temperature reaches to 95...
  • Page 37 Instruction of SR81 Split Pressurized Solar Hot Water System Note: 1. When collector overheat temperature OTST is 10K below the CEM temperature of collector emergency shutdown, then collector overheat temperature OTST is locked 2. Heat transferring function is only available when collector cooling function (OCCO) is deactivated.
  • Page 38 Instruction of SR81 Split Pressurized Solar Hot Water System Function setting: OSYC (System cooling) setup ►Press “SET”, “OSYC OFF” displays on the screen ►Press “SET”, “OFF” blinks on the screen ►Press “+/-”, to activate this function ►Press “ESC” to return to previous menu OSTC (Tank cooling) setup ►Select “OSTC”...

  • Page 39: Aux Auxiliary Function

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “+”, “REL 3” displays on the screen ►Press “SET”, “3” blinks on the screen ►Press “+/-”, to select the output port for heat transferring function ►Press “SET” or “ESC” to save the setting ►Press “ESC”...
  • Page 40 Instruction of SR81 Split Pressurized Solar Hot Water System BEEP Beeper fault warning When system has fault (temperature sensor fault, no flow etc), beeper sends out warning Menu Structure Main Subm Factor Adjustable Step Description menu menu y set range adjust Auxiliary functions Timer function...
  • Page 41 Instruction of SR81 Split Pressurized Solar Hot Water System Start time of the second time section t A2O 00:00 00:00-23:59 Close time of the second time t A2F 00:00 00:00-23:59 section Start time of the third time section t A3O 00:00 00:00-23:59 Close time of the third time section...
  • Page 42 Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “AH ON” displays on the screen ►Press “SET” or “ESC” to save the setting ►Press “+”, “AHS S3” displays on the screen ►Press “SET”,”S3”...

  • Page 43: Man Manual Operation

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET”, “BEEP OFF” displays on the screen ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “BEEP ON” displays on the screen ►Press “SET” or “ESC” to save the setting 8.7 MAN Manual operation For control and service work, the operating mode of the relays can be manually adjusted.

  • Page 44: Blpr Blocking Protection

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “+”, “R2” displays, repeat above steps to set the manual output of R2, R3, HR. Note: when an output is triggered manually, only this output is triggered, others running output will be stopped. 8.8 BLPR Blocking protection Function description: In order to protect the pumps against blocking after standstill, the controller is equipped with...
  • Page 45 Instruction of SR81 Split Pressurized Solar Hot Water System below the disinfection temperature TDIS, once the monitoring period PDIS ends, disinfection period SDIS starts, and the allocated reference relay activates the after-heating, when tank temperature exceeds the disinfection temperature, disinfection phase DDIS starts and disinfection heating time countdowns, countdown finishes, disinfection heating finishes.

  • Page 46: Opar Parallel Relays

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET” or “ESC” to save the setting ►Press “+”, “TDIS 70 C” displays on the screen ►Press “SET”, “70 C” blinks ►Press “+/-”, to adjust the temperature of disinfection ►Press “SET” or “ESC” to save the setting ►Press “+”, “SDIS 18:00”...

  • Page 47: Ohqm Thermal Energy Measuring

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “OPAR ON” displays ►Press “SET” or “ESC” to save the setting ►Press “+”, “INVE OFF” displays ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “INVE ON" appears on the screen ►Press “SET”...
  • Page 48 Instruction of SR81 Split Pressurized Solar Hot Water System sensor VFS. TVFS：temperature of Grundfos flow sensor VFS Note： 1. Sensors on the flow and return pipe for thermal energy measuring are defaulted, not available for set. 2. Flow detecting function is available only when VFS Grundfos direct sensor is connected to the system.
  • Page 49 Instruction of SR81 Split Pressurized Solar Hot Water System If FRT is not connected, flow monitoring function (FLOW) activated, will blinks on the screen. Manual Structure Main Subm Facto Adjustabl Step Description menu menu enu 2 ry set e range adjust ON/OFF Thermal energy measuring...

  • Page 50: Fs Flow Meter Option And Flow Rate Monitoring

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “+/-”, to activate this function, “OHQM ON” displays ►Press “SET” or “ESC” to save the setting ►Press “+”, “FTYP 1” displays ►Press “SET”, “1” blinks ►Press “+/-”, to select type of flow meter ►Press “SET”...
  • Page 51 Instruction of SR81 Split Pressurized Solar Hot Water System appear, and at the same time sign blinks on the screen. It may indicate that system has no fluid or pump R1 is damaged If flow monitoring function is already activated, then tank heating is stopped until the error message is removed.
  • Page 52 Instruction of SR81 Split Pressurized Solar Hot Water System FLOW ON/OF Warning when no flow DELY 1-600s Measuring time of no flow warning FRT flow meter FLOW ON/OF Warning when no flow DELY 1-600s Measuring time of no flow warning Function setting ►Select FS main menu ►Press “SET”, “GFDS”...

  • Page 53: Unit Switch

    Instruction of SR81 Split Pressurized Solar Hot Water System 8.13 UNIT Switch Under this menu, below unit can be set: TEMP temperature ENEG thermal energy: 1 represents KWH, 2 represents BTU Unit of temperature can be switched between Celsius and Fahrenheit and done during normal system running.

  • Page 54: Pass Password Set

    Instruction of SR81 Split Pressurized Solar Hot Water System setting CHQM (accumulated thermal energy): accumulated thermal energy can be reset to 0 CRT (pump running time): accumulated pump running time (R1time) can be reset to 0 Manual structure Function setting ►Select RST menu ►Press “SET”, “RSTP”...

  • Page 55: Manual Heating

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “SET” button again, the second digital blinks, ►Press “+/-” button, to enter the second digital. ►Press “SET” button again, the third digital blinks, ►Press “+/-” button, to enter the third digital. ►Press “SET”...

  • Page 56: Eco Economic Mode

    Instruction of SR81 Split Pressurized Solar Hot Water System Note: Manual heating is not a continuous heating process, it is triggered manually, and when the temperature reaches to the set point, the heating process is stopped. And manual heating function is stopped automatically. 8.17 ECO Economic mode Function description：...

  • Page 57: Manual Circuit Function

    Instruction of SR81 Split Pressurized Solar Hot Water System ►Press “+/-”, to adjust holiday’s days, adjustable range 0-99 days ►Press “ESC” to save set, holiday function is activated and holiday sign displayed and lighted. ►After holiday function is activated, and then press “Holiday” button to cease this function, holiday sign displayed but not lighted.

  • Page 58: Quality Guarantee

    Instruction of SR81 Split Pressurized Solar Hot Water System seller when you are absolutely sure that none of the problems listed below is responsible for the fault. On the screen, sensor sign and warning sign blinks Sensor failure, press “ ▲/▼”...

  • Page 59: Accessories

    Instruction of SR81 Split Pressurized Solar Hot Water System 12. Accessories Products name Specification Products picture PT1000, Ф6*50mm,with 1.5m cable A01: High accurate Pt1000 sensor collector NTC10K, B=3950, Ф6*50mm,with 3m High accurate sensor cable for tank and pipe 304 stainless steel with thread 1/2’ OT, Size: Ф8*200 stainless steel...

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