SUNFLOWER SR91 Operating Instructions Manual

Intelligent controller for split pressurized solar hot water system

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Operation Instruction
SR91
Intelligent Controller
for Split Pressurized Solar Hot Water System
Please read this instruction carefully!

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Summary of Contents for SUNFLOWER SR91

  • Page 1 Operation Instruction SR91 Intelligent Controller for Split Pressurized Solar Hot Water System Please read this instruction carefully!
  • Page 2: Table Of Contents

    Instruction of SR91 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 SR91 Split Pressurized Solar Hot Water System 8.6 MAN Manual operation ....................37 8.7 BLPR Blocking protection ....................38 8.8 OTDI Thermal Sterilization Function ................39 8.9 FS Flow rate monitoring and pump dry-running protection ..........40 8.10 UNIT C-F Switch ......................42 8.11 RET Reset........................
  • Page 4: Safety Information

    Instruction of SR91 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 SR91 Split Pressurized Solar Hot Water System data 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). Please immediate take the device out of operation. Note: ensure that the device can’t be accidentally placed into operation.
  • Page 6: Overview

    Instruction of SR91 Split Pressurized Solar Hot Water System Button LCD Display screen Power indication lamp “On/Off” “Manual Heating” “Manual Circuit” “Eco Mode” “Holiday” “Clock” Downwards adjust “-” “Exit” “Set” Upwards adjust “+” Status Description Code Lighting Blinking Exceed the maximum temperature...
  • Page 7: Delivery List

    Instruction of SR91 Split Pressurized Solar Hot Water System  1500W or 3000W/4000W of electrical heater should be remarked in the purchased order  Dimension of display: 120*120*23mm  Dimension of controller board with 1500W output: 200*140*43mm  Dimension of controller board with 3000W/4000W output: 218*165*55mm Note: there are 4 inputs for NTC10K, B=3950 temperature sensor, but only 2 sensors are included in the standard delivery list;...
  • Page 8: Mounting The Board Of Controller

    Instruction of SR91 Split Pressurized Solar Hot Water System 3.2 Mounting the board of controller Follow the below steps to mount the controller on the wall. ► Select the proper place to install main board of controller ► Put the hung housing plate on the wall and mark the upper fastening point.
  • Page 9: Preparation Before Wiring Connection

    Instruction of SR91 Split Pressurized Solar Hot Water System 3.3 Preparation before wiring connection Open/close the cover of connection terminal. ► Unscrew the screw ①②, and take out the cover upwards ► Close the cover: close the cover downwards ► Fix the cover with the screw ①②...
  • Page 10: Terminal Allocation Of Controller For Electrical Heater Of 1500W

    Instruction of SR91 Split Pressurized Solar Hot Water System 3.5.1 Terminal allocation of controller for electrical heater of 1500W  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.
  • Page 11: Terminal Allocation Of Controller For Electrical Heater Of 3000W/4000W

    Instruction of SR91 Split Pressurized Solar Hot Water System 3.3.2 Terminal allocation of controller for electrical heater of 3000W/4000W  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.
  • Page 12: System Description (Standard Solar System With 1 Tank, 1 Collector Field)

    Instruction of SR91 Split Pressurized Solar Hot Water System 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).
  • Page 13: Time Setup

    Instruction of SR91 Split Pressurized Solar Hot Water System Sensor Relay Description Description ports outputs Collector temperature For solar circuit pump sensor PT1000 Temperature sensor on the 1. for DHW circuit function (CIRC) bottom part tank. NTC10K 2.OHDP ( Thermal energy...
  • Page 14: Function's Parameters And Options

    Instruction of SR91 Split Pressurized Solar Hot Water System 6. Function’s parameters and options 6.1 Overview of menu structure Digital flow Timing heating Cool Function DHW Circuit Aux. Function C-F Unit Reset Password Manual Mode Tank loading Block protect Password setup...
  • Page 15: Value Checking And Function Checking

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “+/-” button to select submenu, ►Press “SET” button to enter the value adjust interface ►Press “+/-” to adjust value ►Press “SET” or “ESC” to confirm the value you set ►Press “ESC”, exit the submenu.
  • Page 16 Instruction of SR91 Split Pressurized Solar Hot Water System 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 40 C,switch-off temperature is 50 C。...
  • Page 17 Instruction of SR91 Split Pressurized Solar Hot Water System Note: 1. If larger power electrical heater (larger than 1500KW) is used, according to the power, we suggest using controller with 3000W or 4000Woutput. 2. Please remark the power of electrical heater and the voltage used.
  • Page 18 Instruction of SR91 Split Pressurized Solar Hot Water System “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”...
  • Page 19: Circ Dhw Circulation Pump Controlled By Temperature And Time

    Instruction of SR91 Split Pressurized Solar Hot Water System lighted on the screen Within the preset time section, if timing heating is working, heating sign blinks on the screen. Out of the preset time section, heating sign doesn’t display on the screen.
  • Page 20 Instruction of SR91 Split Pressurized Solar Hot Water System 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 40...
  • Page 21 Instruction of SR91 Split Pressurized Solar Hot Water System Menu Structure Main Subme Subm Factory Adjustable Step per Description menu nu 1 enu 2 range adjust CIRC DHW circuit function TCYC ON/OFF Activate / deactivate the DHW circuit function TEMP...
  • Page 22 Instruction of SR91 Split Pressurized Solar Hot Water System t C2O 11:00 00:00-23:59 Switch-on time for the second time section t C2F 13:00 00:00-23:59 Switch-off time for the second time section t C3O 17:00 / 00:00-23:59 / Switch-on time for the...
  • Page 23 Instruction of SR91 Split Pressurized Solar Hot Water System as example) ► Press “SET”, “40 C” blinks ► Press “+/-” button to adjust the switch-on temperature (adjustable range 0 C ~ (OFF-2 ► Press “SET” or “ESC” button to save the setting.
  • Page 24: Function Operation And Parameter Setup (Engineer)

    Instruction of SR91 Split Pressurized Solar Hot Water System 8. Function operation and parameter setup (engineer) 8.1 PWD Password Menu Structure Access main menu, select “PWD 0000” to enter password ► Press “SET” button, the left digital blinks, enter password, factory set is “0000”...
  • Page 25 Instruction of SR91 Split Pressurized Solar Hot Water System temperature difference. The set temperature difference must be at least 0.5 K higher than the switch-on temperature difference.  SMX Maximum tank temperature protection set If the tank temperature reaches the adjusted maximum temperature, the tank will no longer be loaded in order to avoid damage caused by overheating.
  • Page 26: Col Collector Function

    Instruction of SR91 Split Pressurized Solar Hot Water System ► Press “SET”, “6K” blinks ► Press” +/-”, to adjust the switch-on temperature of the solar circuit pump ► Press “SET” or “ESC” to save the setting ► Press “+”, “DTF 4K” displays on the screen ►...
  • Page 27 Instruction of SR91 Split Pressurized Solar Hot Water System  OCCO Collector cooling The collector cooling function keeps the collector temperature rising within the operating range by heating the tank. If the tank temperature reaches 95° C the function will be switched off for safety reasons.
  • Page 28 Instruction of SR91 Split Pressurized Solar Hot Water System Menu structure Main Subme Subme Factory Adjust Step per Description menu nu 1 nu 2 able adjust range Collector function OCEM Collector emergency shutdown function on/ff 80-200 Temperature of collector 130℃...
  • Page 29 Instruction of SR91 Split Pressurized Solar Hot Water System Function setting: OCEM (Collector emergency shutdown function) setup ►Select “COL” function menu ►Press “SET”, “OCEM” displays on the screen ►Press “SET” again, “OCEM ON” displays on the screen ►Press “SET”, “ON” blinks on the screen (If it is necessary to shut down this function, press “+/-“to deactivate it)
  • Page 30: Cool Collector Function

    Instruction of SR91 Split Pressurized Solar Hot Water System OCFR (Antifreeze function) setup ►Select OCFR submenu, “OCFR” displays on the screen ►Press “SET”, “OCFR OFF” displays on the screen ►Press “SET”, “OFF” blinks on the screen ►Press “+/-”, to activate this function, “OCFR ON” displays on the screen ►Press “+”, “CFRO 4...
  • Page 31 Instruction of SR91 Split Pressurized Solar Hot Water System coil); the purpose is to keep the collector’s or tank’s temperature within the operating range. For this function, an extra output should be added (R2 or R3 as option) Heat transferring by external radiator function can control either an additional pump or a valve (OTPM ON = pump logic, OTPM OFF = valve logic).
  • Page 32 Instruction of SR91 Split Pressurized Solar Hot Water System Menu structure Main Subm Subm Facto Adjustable Step Description enu 1 range adjust Cooling function OSTC ON/OFF Tank cooling function DTCO 1-30K 0.5K Switch-on temperature difference of cooling function DTCF 0.5-29.5K 0.5K...
  • Page 33: Aux Auxiliary Function

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “SET”, “OSTC OFF” displays on the screen ►Press “SET”, “OFF” blinks on the screen ►Press “+/-”, to activate this function ►Press “+”, “DTCO 20K” displays on the screen ►Press “SET”, “20K” blinks on the screen ►Press “+/-”, to adjust the switch-on temperature difference of tank cooling function...
  • Page 34 Instruction of SR91 Split Pressurized Solar Hot Water System  TIME Timer function Timer function can trigger controller’s output port at the preset time; therefore, an available output (R3) is needed.  AH Thermostat function The thermostat function works independently from the solar operation and can be used for using surplus energy to reduce tank temperature or for using after heating to rise tank temperature.
  • Page 35 Instruction of SR91 Split Pressurized Solar Hot Water System Menu Structure Subm Facto Adjustab Step Description enu 1 le range adjust Auxiliary functions Timer function TIME ON/OFF Start time of the first time section t 1O 00:00 00:00-23: Close time of the first time section...
  • Page 36 Instruction of SR91 Split Pressurized Solar Hot Water System Switch-on temperature 40℃ 0.0-95℃ 0.5℃ Switch-off temperature 45℃ 0.0-94.5 0.5℃ ℃ Start time of the first time section t A1O 00:00 00:00-23: Close time of the first time section t A1F...
  • Page 37 Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “SET”, minute “00” blinks ►Press “+/-” to adjust the minute of the close time of the first time section ►Press “SET” or “ESC” to save the setting ►Press “+”, access the setting of the second time section, repeat above steps to set time of second and third sections.
  • Page 38: Man Manual Operation

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “SET”, “23” blinks ► Press “+/-”, to adjust the hour of close time of the first time section ►Press “SET”, “59” blinks ► Press “+/-”, to adjust the minute of close time of the first time section ►Press “SET”...
  • Page 39: Blpr Blocking Protection

    Instruction of SR91 Split Pressurized Solar Hot Water System Main Subm Factory Adjustabl Description Menu e range Manual mode ON/OFF R1 on and off ON/OFF R2 on and off ON/OFF R3 on and off ON/OFF HR on and off Function setup ►Select “MAN”...
  • Page 40: Otdi Thermal Sterilization Function

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “+/-”, to activate this function, “BLPR ON” displays on the screen ►Press “SET” or “ESC” to save the setting 8.8 OTDI Thermal Sterilization Function Function description: This function helps to prevent the spread of Legionella in DHW tanks by systematically activating the after-heating.
  • Page 41: Fs Flow Rate Monitoring And Pump Dry-Running Protection

    Instruction of SR91 Split Pressurized Solar Hot Water System Function setting ►Select OTDI main menu ►Press “SET”, “OTDI OFF” display ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “OTDI ON” displays ►Press “SET” or “ESC” to save the setting ►Press “+”, “PDIS 7”...
  • Page 42 Instruction of SR91 Split Pressurized Solar Hot Water System button for 3 seconds to switch-off FS function, and after the fault is removed, then monitoring function is activated again. Flow monitoring function is designed to detect whether flow exists in the solar system and therefore to switch-off the corresponding pump in case of no flow, If “OFF”...
  • Page 43: Unit C-F Switch

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “SET”, “OFF” blinks ►Press “+/-”, to activate this function, “FS ON” displays ►Press “SET” or “ESC” to save the setting 8.10 UNIT C-F Switch Under this menu, below unit can be set:...
  • Page 44: Pass Password Set

    Instruction of SR91 Split Pressurized Solar Hot Water System ►Press “SET” for 3 seconds, beeper sounds “di” 3 times, “YES” lighting, and it indicates system is recovered to factory set. ►Press “ESC” return to the submenu ►Press “ESC” again, return to the main menu 8.12 PASS Password set...
  • Page 45: Manual Heating

    Instruction of SR91 Split Pressurized Solar Hot Water System “ESC” button, Controller recovers to the factory set password (factory set possword is 0000), 8.13 Manual heating Function Description: It is possible to trigger back-up heating manually with this controller to heat tank. When tank...
  • Page 46: Dhw Circuit Pump Triggered Manually

    Instruction of SR91 Split Pressurized Solar Hot Water System 8.15 DHW circuit pump triggered manually Note: Only when function of DHW circuit pump CIRC is activated, it is just possible to trigger the output R2 manually for running the DHW circuit pump. (Default pump runs for 3 minutes) ►...
  • Page 47: Protection Function

    Instruction of SR91 Split Pressurized Solar Hot Water System pump R1. During the running of circuit pump R1, if you don’t press “Manual circuit” button, then R1 will run for 1 hour, then it is stopped automatically. And manual circuit function is deactivated correspondingly.
  • Page 48 Instruction of SR91 Split Pressurized Solar Hot Water System On the screen, sensor sign and warning sign blinks Sensor failure, press “ ▲/▼” button, an error code instead of temperature displays on the corresponding sensor place ---- -88.8 Wire is broken, Check wire...
  • Page 49: Quality Guarantee

    Instruction of SR91 Split Pressurized Solar Hot Water System 11. Quality Guarantee Manufacturer provides following quality responsibilities to end-users: within the period of quality responsibilities, manufacturer will exclude the failure caused by production and material selection. A correct installation will not lead to failure. When a user takes incorrect handling way, incorrect installation, improper or crude handling, and wrong connection of Warm water outflow upwards, we don’t take the responsibilities caused by before mentioned...

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