andrews MAXXflo EVO Lite Assembling Instruction Manual
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andrews MAXXflo EVO Lite Assembling Instruction Manual

High efficiency condensing stainless steel storage water heater
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CONTROLS - USER OPERATING INSTRUCTION MANUAL
MAXXfl o EVO Lite
High effi ciency condensing stainless steel storage water heater
SC15/201, SC25/201, SC35/201, SC45/201
Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference.
Andrews. Built to perform.
M10226

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  • Page 1 MAXXfl o EVO Lite High effi ciency condensing stainless steel storage water heater SC15/201, SC25/201, SC35/201, SC45/201 Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference. Andrews. Built to perform. M10226...

  • Page 2: Table Of Contents

    Contents Safety 1.1 Important safety instructions .................. 1.2 Recommendations and notices ................Introduction to the heater controls 2.1 The Graphical User Interface (GUI) ............... 2.2 Navigate and set using the control knob ..............2.3 Display symbol meanings ..................User operation 3.1 The home page .....................

  • Page 3: Safety

    1 Safety 1.1 Important safety instructions Danger If you smell gas: 1. Do not use naked fl ames, do not smoke and do not operate electrical contacts or switches (lighting, motor, lift etc) 2. Shut off the gas supply 3. Open the windows 4.

  • Page 4: Recommendations And Notices

    Caution Ensure that the heater is regularly serviced. Contact a quali- fi ed installer/engineer or arrange a maintenance contract for the servicing of the heater. Caution Secure against unintentional switch on. When the DHW tank is empty, ensure that the heater cannot be switched on unintentionally.
  • Page 5 1.2.3 Regulations and standards It is the law that all gas heaters are installed by a competent person in accordance with the regulations. Failure to install or maintain heaters correctly could lead to prosecution. It is in your own interest, and that of safety, to ensure that the law is complied with.

  • Page 6: Introduction To The Heater Controls

    2 Introduction to the heater controls 2.1 The Graphical User Interface (GUI) DHW temp 1 60.2 Control knob (press to enter) Reset switch (under plastic cover) Graphical User Interface 2.1.1 GUI Basics The control knob is used to operate the GUI. The display is or- ganised into a navigation bar, status bar, and work area.

  • Page 7: Navigate And Set Using The Control Knob

    2.2 Navigate and set using the control knob Operating objects may have three display states: Not selected: The operating object is displayed normally, black on white background. Preselected: The operating object is framed. Selected: The operating object is inverted with white on black background. To go to the navigation bar: Turn control knob.

  • Page 8: Display Symbol Meanings

    2.3 Display symbol meanings The following symbols are located on the navigation bar (left, vertical): Accessible for end-user and experts: Start page: Heater status. Access to system operation mode. DHW page. Access to temperature and time clock settings Info pages: •...

  • Page 9: User Operation

    3.0 User Operation 3.1 The home page DHW temp 1 58.9 The home page for the heater GUI unit displays the most im- portant information on the water heater and system operation mode. There are no settings that can be applied whilst in this screen.

  • Page 10: Setting Dhw Operating Mode

    3.3 Setting DHW Operating mode Domestic hot water Operating mode Off Temporary Using select the Domestic hot water page and press enter to view. Nominal set point Time program Domestic Hot Water Operating mode Temporary Rotate to select the operating mode, then press enter to select and change the mode to “On”.

  • Page 11: Setting Dhw Heating Time Program

    3.5 Setting DHW heating time program Domestic Hot Water Operating mode Temporary Select the Domestic Hot Water (DHW) page by rotating and Nominal set point pressing . Toggle to the operating mode and ensure that Domestic Hot Water is turned “On”. Time program Domestic Hot Water With the DHW page selected, rotate...
  • Page 12 to select and set existing time band. Monday Set time program Scroll to the beginning (00 hours) to insert another time band (up to a total of 3 time bands per day can be set). 12:00 to 18:00 Copy Back To delete a time band use to move the start and end times of the band to be the same then press enter.

  • Page 13: Temporary Dhw Operation Function

    Copy Monday to Once times have been copied select “Done “ to return to Do- Monday mestic hot water page. Tuesday Wednesday Thursday Friday Saturday Sunday Done 3.6 Temporary DHW operation function Outside of the programmed operation times for water heating, the operation of the water heater can be turned on for a single occasion where Hot Water will be heated to the nominal set point.

  • Page 14: Information

    3.7 Information pages Domestic hot water Charging active Information regarding the operation state of the water heater can be viewed by selecting “ ” pages and pressing enter. DHW temp 1 58.6 In this example the screen is showing the status of DHW and the tank temperature:- Boiler To view additional info pages rotate...

  • Page 15: Error Messages

    3.8 Error messages If the heater controls are unable to operate the gas burner or it detects a undesirable condition, the controls will put the heater into a “lockout” mode and the heater may be prevented from Error operating again, until manually reset. 133: Safety time exceeded If the error detected is a minor one, the controls will allow the heater to operate normally, but in either case an error mes-...

  • Page 16: Error Codes

    3.8.1 Error codes Error Error Code Diag. Notes Code Description Code Boiler tempera- Other Water heater fl ow sensor (B2) is outside normal limits ture 1, sensor error Water heater fl ow sensor (B2) is short-circuit. Check connection for possible con- tamination or faulty sensor.
  • Page 17 3.8.1 Error codes (continued) Error Error Code Diag. Notes Code Description Code SLT Lockout 306 431 Electronic temperature limits exceeded. General overheating issue. Check for 432 433 pump operation, trapped air and heat exchanger blockages. Monitor tempera- 434 435 tures of system to establish problem area. 436 756 429 818 Safe reset of the error sub code 433 (see above) has not been met.
  • Page 18 3.8.1 Error codes (continued) Error Error Code Diag. Notes Code Description Code Loss of fl ame Count of loss-of-fl ame incidents exceeded (a maximum of 15 loss of fl ame inci- during operation dents are permitted in a 24 hour period ) Flame lost in operation during safety time, before the start of the modulation phase.
  • Page 19 3.8.1 Error codes (continued) Error Error Code Diag. Notes Code Description Code Sensor error Short circuit of Ionisation circuit. Check operation of ionisation probe using pa- rameter 8329 (menu - Diagnostics heat generation). Ionisation probe may need replacing. Check electrical supply to the heater and burner - pay special attention to the earth circuit and supply.

  • Page 20: Maintenance Messages

    3.9 Maintenance messages The display will show a symbol if the heater is reporting a maintenance issue. The heater will continue to operate as normal, but it may in future stop if the maintenance message is ignored and an error develops as a result. Example Maintenance In this example ‘105: Maintenance message’...

  • Page 21: Regional Settings

    3.10 Regional settings Settings available for adjustment: • Time • Date • Daylight saving time start and end • Language Regional settings (1/3) Time 14:42 Rotate to highlight regional settings and press enter to select. Rotate to select one of the 3 setting pages. Date 09.08.2016 Back...

  • Page 22: Commissioning Operation (In Addition To User Operation)

    4.0 Commissioning Operation (in addition to User operation) Caution The features available at “Expert” level are intended for use by a competent commissioning engineer. The following sec- tion details options/screens that are available to the commis- sioning engineer in additions to the options/screens available at end user level.

  • Page 23: Input / Output Test

    4.2 Input / Output test This function is used to test all non safety inputs and outputs going to and from the controls. Useful in confi rming operation of external items, such as the Q4 circulation pump. Input/output test Communication Highlight “Input/output test”...

  • Page 24: Communication

    4.3 Communication This function gives access to the Local Process Bus and is useful, should the optional web server be fi tted to communi- cate with the heater. Input/output test Communication Source Highlight “Communication” by rotating and select the func- Consumer tion by pressing enter.

  • Page 25: Source

    4.4 Source This function displays information about the live internal operational status of the heater and it’s sensors. Highlight “Source” by rotating and select the function by pressing enter. Input/output test Communication Source Consumer Versions Boiler (1/3) 8005 State boiler Off...

  • Page 26: Consumer

    4.5 Consumer This function displays information about the live opera- tional status of the items external to the operation of the water heater. Highlight “Consumer” by rotating and select the function by Input/output test pressing enter. Communication Source Consumer Versions Domestic hot water (2/4) 8830 DHW Temp 1...

  • Page 27: Versions

    4.6 Versions This function displays information about the software and text versions used by the heater screen. Input/output test Highlight “Versions” by rotating and select the function by Communication pressing enter. Source Consumer Versions Operator unit Software version Details are shown for the software and text versions being used by the GUI, this may be useful to establish the level of updates Text version applied to the heater.
  • Page 28 Sales 0345 070 1055 Technical 0345 070 1057 Web andrewswaterheaters.co.uk June 2019 April 2022 Andrews. Built to perform. ALL TOGETHER BETTER BAXI HEATING COMMERCIAL BRANDS...

This manual is also suitable for:

Sc15/201Maxxflo evo lite sc25/201Maxxflo evo lite sc35/201Maxxflo evo lite sc45/201

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