Riello Vokera UNICA MAX Series User Instructions
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Riello Vokera UNICA MAX Series User Instructions

Riello Vokera UNICA MAX Series User Instructions

High efficiency combi boiler
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UNICA MAX
High efficiency combi boiler
Users Instructions
Installation &
Servicing
Instructions
UNICA MAX 35C NG G.C. N° 47-364-61
UNICA MAX 40C NG G.C. N° 47-364-62
UNICA MAX 35C LPG G.C. N° 47-364-63
UNICA MAX 40C LPG G.C. N° 47-364-64
THESE INSTRUCTIONS
TO BE RETAINED
BY USER
Vokèra is a licensed member of the Benchmark scheme
which aims to improve the standards of installation and
commissioning of domestic hot water systems in the UK.

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  • Page 1 UNICA MAX High efficiency combi boiler Users Instructions Installation & Servicing Instructions UNICA MAX 35C NG G.C. N° 47-364-61 UNICA MAX 40C NG G.C. N° 47-364-62 UNICA MAX 35C LPG G.C. N° 47-364-63 UNICA MAX 40C LPG G.C. N° 47-364-64 THESE INSTRUCTIONS TO BE RETAINED BY USER...

  • Page 2: Table Of Contents

    1. THINGS YOU SHOULD KNOW ........... 2 SECTION 5 - INSTALLATION ............27 2. GETTING STARTED ..............5 SECTION 6 - COMMISSIONING ........... 33 3. HOW TO..................10 SECTION 7 - SERVICING INSTRUCTIONS ........43 4. WHAT IF ..................11 SECTION 8 - CHECKS, ADJUSTMENTS AND FAULT FINDING ..
  • Page 3 FROST PROTECTION SYSTEM APPLIANCE STATUS INDICATORS The UNICA MAX is equipped with a built-in frost protection system, Your appliance incorporates the REC10CH UI (User Interface), this enables the boiler to over-ride the time controls – even if that displays information on appliance status and condition. switched off –...
  • Page 4 1.11 USER FUNCTIONS PLANT 18/05/2021 12:17 1.3 bar MENU STATE °C INFO HOT WATER TEMPERATURE 1 MENU DEFAULT VALUE FACTORY MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES MENU SETTINGS USER TIME & DATE USER DAYLIGHT SAVINGS TIME FUNCTION ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE USER LANGUAGE...
  • Page 5 2. GETTING STARTED BEFORE SWITCHING ON Note: MAIN ZONE is visible in this menu only if the zone is managed by a room thermostat. Before switching the appliance on, please familiarise yourself with: HEAT PUMP is only visible if a heat pump is connected to the system. - how to isolate the appliance from the gas, water, and electricity supplies;...
  • Page 6 ANTILEGIO CUT OFF (only with water tank) want to change the temperature value, increasing or decreasing it compared to that automatically calculated by the electronic This function can be interrupted in advance in two different ways: board, you can change the COOLING setpoint by choosing the - set the boiler to OFF desired comfort level (-5 ÷...
  • Page 7 BACKLIGHT: the screen saver display (backlight off) is SCREED HEATER OPERATING HOURS ZONE 2 SET-POINT automatically activated when the time, that has been set in DELIVERY PROBE SYSTEM PRESSURE parameter MENU SETTINGS BACKLIGHT, RETURN PROBE HEAT PUMP DELIVERY elapsed without having pressed any buttons. DOMESTIC HOT WATER PROBE HEAT PUMP RETURN In the screen saver the current time is normally displayed.
  • Page 8 MAIN MAIN START THURSDAY START 07:30 08:30 THURSDAY 07:30 08:30 11:30 13:30 11:30 13:30 18:00 22:30 18:00 22:30 MODIFY MODIFY DELETE DELETE COPY COPY SELECT OPTION SELECT OPTION The user can increase or decrease by 30 minutes the start Select the desired time band. time and the end time.

  • Page 9: How To

    PLANT 18/05/2013 12:17 MENU STATE °C E041 WATER TRANSDUCER INFO LOAD THE SYSTEM HOT WATER TEMPERATURE Move inside the display until the icon is highlighted. The If the pressure drops frequently, contact the Technical error message will be displayed. The faults description screen Assistance Centre.

  • Page 10: What If

    HOW TO RESET THE APPLIANCE - DHW frost-protection: the function starts if the temperature measured by the DHW sensor falls below 5°C. A heat request Reset function is generated in this phase with the ignition of the burner at In order to reset the boiler’s operation in the event of a fault, minimum output, which is maintained until the outlet water it is necessary to access the fault description screen.
  • Page 11 INSTALLATION AND SERVICING INSTRUCTIONS INTRODUCTION All installers are asked to follow the Benchmark Scheme by These appliances are designed for use with a sealed system adhering to the Code of Practise, details of which can be only; consequently they are not intended for use on open obtained from www.benchmark.org.uk.

  • Page 12: Section 1 - Design Principles And Operating

    1. SECTION - DESIGN PRINCIPLES AND OPERATING SEQUENCE 1.1 PRINCIPLE COMPONENTS 1.5 SAFETY DEVICES • A fully integrated electronic control board featuring electronic When the appliance is in use, safe operation is ensured by: temperature control, anti-cycle control, pump over-run, self- •...

  • Page 13: Section 2 - Technical Data

    2. SECTION - TECHNICAL DATA Central Heating UNICA MAX 35C UNICA MAX 40C Heat input (kW) 32.00 32.00 Maximum heat output (kW) 60/80°C 31.23 31.23 Minimum heat output (kW) 60/80°C 4.69 4.69 Maximum heat output (kW) 30/50°C 34.37 34.37 Minimum heat output (kW) 30/50°C 5.06 5.06 Minimum working pressure...

  • Page 14: Section 3 - Control Panel (Rec10Ch)

    2.12 Fan rotations UNICA MAX 35C UNICA MAX 40C Number of fan rotations with slow ignition (rpm) 5,500 5,500 Maximum number of heating fan rotations (rpm) 7,300 7,300 Minimum number of heating fan rotations (rpm) 1,700 1,700 Maximum number of DHW fan rotations (rpm) 7,800 9,100 Minimum number of DHW fan rotations (rpm)
  • Page 15 2.14 Residual head of the circulator 3 - CIRCULATOR IN MAXIMUM FIXED SPEED MODE (DUTY CYCLE PUMP = 1) The boiler is equipped with a high efficiency modulating circulator In this mode the circulator, when activated, always works at already connected hydraulically and electrically, the available maximum speed.
  • Page 16 Fig. 5 Location Minimum distance Below an opening (window, air-brick, etc.) 300 mm Above an opening (window, air-brick, etc.) 300 mm To the side of an opening (window, air-brick, etc.) 300 mm Below gutter, drain-pipe, etc. 25 mm Below eaves 25 mm Below balcony, lowest point of carport roof, etc.
  • Page 17 3. SECTION - CONTROL PANEL (REC10CH) The REC10CH is a fully functional UI (User Interface) that acts as a visual reference for the appliance and system status; and can also be used to view, input and adjust relevant system parameters and functions (also for solar system and heat pump if present).
  • Page 18 The display of the REC10CH control panel is equipped with the new “Color Bar” that rapidly informs the user about the boiler operation. The operating states and the alarms are grouped by 4 colours: - GREEN: normal operation, the system is serving domestic hot water/heating requests or else automatic functions like, for example, anti-legionella, antifreeze, flue cleaning, etc...
  • Page 19 3.1 Structure of the REC10CH MENU DEFAULT VALUE FACTORY MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE MENU SETTINGS USER TIME & DATE USER DAYLIGHT SAVINGS TIME FUNCTION ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE USER LANGUAGE ENGLISH / ITALIANO / ... USER BACKLIGHT 5 min...
  • Page 20 DEFAULT VALUE FACTORY MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE MENU DECR COOLING SP 0°C 0°C 10°C SERVICE PUMP DUTY CYCLE INSTALLER RESET CH TIMERS FUNCTION NOT ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE INSTALLER INSTALLER: only in DHW THERMOSTAT RELATED RELATED ABSOLUTE...
  • Page 21 DEFAULT VALUE FACTORY MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE MENU EXHAUST PROBE RESET INSTALLER INSTALLER: only if instantaneous ADD WATER TANK and “only heating” confi g. INSTALLER WATER TANK REMOVE WATER TANK INSTALLER INSTALLER: only if HP enable 50°C 37.5°C 60°C...
  • Page 22 DEFAULT VALUE FACTORY MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE MENU BOOSTER DELAY 30min 1 min 60 min INSTALLER BOOSTER DELTA TEMP 5°C 1°C 20°C INSTALLER INSTALLER OAT SENSOR TYP MINIMUM PUMP SPEED 100% INSTALLER MAXIMUM PUMP SPEED 100% 100% INSTALLER ENABLE ERROR HISTORY...
  • Page 23 3.2 Access to TECHNICAL PARAMETERS MENU PLANT 09/04/2021 12:17 09/04/2021 12:17 1.3 bar MENU STATE INSERT PASSWORD SETTINGS °C 5 sec INFO SELECT OPTION AIR PURGING CYCLE IN PROGRESS 3.3 Access to SETTINGS - TECHNICAL - INFO SYSTEM menu TECHNICAL MENU PARAMETERS INSTALLATION...

  • Page 24: Section 4 - General Requirements (Uk)

    4. SECTION - GENERAL REQUIREMENTS (UK) BS 5440 PART 1 FLUES BS 5440 PART 2 FLUES & VENTILATION BS EN 12828 DESIGN FOR WATER-BASED HEATING SYSTEMS BS 5546 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 70kW BS 6891 LOW PRESSURE INSTALLATION PIPES This appliance must be installed by a competent person in...
  • Page 25 4.6.7 LOW PRESSURE SEALED SYSTEM Fig. 6 An alternative method of filling the system would be from an control valve independent make-up vessel or tank mounted in a position at control least 1 metre above the highest point in the system and at least temporary valve 5 metres above the boiler (see fig.
  • Page 26 4A. SECTION - GENERAL REQUIREMENTS (EIRE) 4A.5 AIR SUPPLY This appliance must be installed by a competent person in accordance with and defined by, the Standard Specification The following notes are intended for general guidance only. (Domestic Gas Installations) Declaration (I.S. 813). This appliance is a room-sealed, fan-flued boiler, consequently it does not require a permanent air vent for combustion air supply.
  • Page 27 4A.10 WATER TREATMENT 4A.11 SHOWERS Vokera recommend that water treatment be carried out in If the appliance is intended for use with a shower, the shower accordance with the Benchmark Guidance on water treatment should be thermostatically controlled and be suitable for use in central heating systems.
  • Page 28 used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket. Fig. 11 90° bend flange installed as standard FITTING THE HORIZONTAL FLUE KIT Carefully measure the distance from the centre of the appliance flue outlet to the edge of the finished outside wall (dimension X).
  • Page 29 - if/when an extension is cut to a shorter length, ensure that the excess length is cut from the plain end of the extension, and that any burrs or rough edges are removed - all seals are properly located before assembling or connecting the flue system.
  • Page 30 5.6.3 COLD WATER INLET The appliance is supplied with a 15mm combined stopcock and filling valve, connect a 15mm pipe to the inlet of the stopcock and tighten both nuts. 5.6.4 HOT WATER OUTLET The appliance is supplied with a 15mm outlet connection, connect a 15mm pipe to the outlet connection and tighten both nuts.
  • Page 31 detailed instructions. ANY EXTERNAL CONTROL OR WIRING PLANT 18/05/2013 12:17 MUST BE SERVED FROM THE SAME ISOLATOR AS THAT 1.5 bar MENU STATE OF THE APPLIANCE. The supply cable from the isolator to the Open Therm connected appliance must be 3-core flexible sized 0.75mm to BS 6500 or equivalent.
  • Page 32 5.7.2 APPLIANCE MAIN ELECTRICAL SUPPLY INPUT The appliance is supplied with an electrical fly-lead (approx. 1.5m long) and the 8-poles connector has a link wire inserted across the TA terminals; these measures enable the basic function of the appliance once the fly-lead is connected to the electrical supply.
  • Page 33 6. SECTION - COMMISSIONING NOTE: please refer to section 4, section 4.1 and use the ap- TIME & DATE propriate PPE when carrying out any of the actions or proce- dures contained within this section. ENTER TIME AND DATE 6.1 PRELIMINARY CHECKS Before starting up the boiler, check: 18 / 11 / 2013 - confirm via the appliance data badge, that the appliance is...

  • Page 34: Section 5 - Installation

    - ANTI-CYCLE FUNCTION (TIMER OFF CH): once the Pin 1 and 2 of X21 Jumper not present Jumpered setpoint has been reached the burner will cycle on and off DO_AUX1 = 0 additional pump zone valve until an external control, e.g. time clock cancels the heating request.
  • Page 35 6.2.3 EMBEDDED CLOCK HEATING SCHEDULE HEAT REQUEST FROM THERMOSTAT (Programmable Timer): the outlet setpoint depends on When the embedded clock is enabled (POR=1 - see above), the outdoor temperature for obtaining a reference ambient a default heating schedule is used to manage the ON/OFF temperature of 20°C.
  • Page 36 - Select TECHNICAL AIR PURGING CYCLE WEATHER COMPENSATION CURVE STOP FUNCTION TECHNICAL AIR PURGING CYCLE WEATHER COMPENSATION FUNCTION ENABLED RANGE RATED CALIBRATION FUNCTION DISABLED COMBUSTION ANALYSIS STOP FUNCTION AIR PURGING CYCLE INSTALLER INSTALLER 25 ° C 20 °C The REC10CH will briefly display a wait message after which 15 °C you will automatically be taken to the main screen.
  • Page 37 6.5 ADJUSTING THE HEATING WATER TEMPERATURE WITH AN OUTDOOR TEMPERATURE SENSOR CONNECTED E010 When an outdoor temperature sensor is installed, the outlet FLAME LOCKOUT temperature is automatically selected by the system, which quickly adjusts the ambient temperature according to the PRESS OK RESET variations in the outdoor temperature.

  • Page 38: Section 6 - Commissioning

    6.11 CHECKS DURING AND AFTER THE FIRST The boiler will operate at maximum heating output and it will be possible to check the combustion. COMMISSIONING PLANT STATE BOILER 09/04/2021 12:17 After start up, check that the boiler carries out the start-up 1.3 bar MENU STATE...
  • Page 39 Reset function For fault E060 In order to reset the boiler’s operation in the event of a The boiler is working normally, but does not provide any fault, it is necessary to access the fault description screen. stability of the domestic hot water temperature that, in any If the lockout is of a non-volatile type that requires a reset event, is supplied at a temperature of around 50°C.
  • Page 40 List of combustion faults ERROR ERROR MESSAGE DESCRIPTION OF TYPE OF ALARM CODE E021 iono alarm E022 iono alarm These are temporary alarms that if they occur several times in an hour they become definitive; E023 iono alarm the alarm E097 is displayed and is followed by post-purging for 45 seconds at the fan’s maximum E024 iono alarm speed.
  • Page 41 At the end of the siphon maintenance operations, it is BOILER TYPE recommended to bring the boiler to condensing mode UNICA MAX 35C for a few minutes and to check for leaks from the entire condensate evacuation line. UNICA MAX 40C - Select COMBUSTION OFFSET RESTORE - Press OK to confirm.
  • Page 42 6.19 FINAL CHECKS • ENSURE THE APPLIANCE FLUE SYSTEM IS FITTED CORRECTLY AND IS PROPERLY SECURED. • ENSURE ALL PIPE WORK IS RE-CHECKED FOR TIGHTNESS. • COMPLETE BENCHMARK CHECKLIST. FOR UK ONLY Complete details of the boiler, controls, installation and commissioning in the Benchmark checklist at the back of this book.

  • Page 43: Section 7 - Servicing Instructions

    7. SECTION - SERVICING INSTRUCTIONS GENERAL UNSCHEDULED MAINTENANCE The appliance incorporates software that monitors the Once the appliance has been serviced, the benchmark Service operating conditions of the appliance, and will record any Record must be completed. ‘unusual usage conditions’ that will affect the requirement to For UK only remove and clean the burner/heat exchanger assembly.

  • Page 44: Section 8 - Checks, Adjustments And Fault Finding

    8. SECTION - CHECKS, ADJUSTMENTS AND FAULT FINDING NOTE: please refer to section 4, section 4.1 and use the ap- relative to the output required. When the boiler has reached propriate PPE when carrying out any of the actions or proce- the set point (+ hysterisis), the burner will switch off.
  • Page 45 8.5 ELECTRICAL CHECKS 8.8 REC10CH SYSTEM RESET Any electrical checks must be carried out by a suitably qualified Warning! – This operation must only be carried out by person. qualified personnel! If required, the system configuration can be reset back to the 8.5.1 EARTH CONTINUITY TEST factory default configuration;...
  • Page 46 8.10 TYPICAL BESMART CONNECTION – CONNECTED TO THE 8-POLES CONNECTOR SELECT THE TYPE OF CONFIGURATION MAIN PCB BOILER PLANT CH ONLY WHERE IS THE REC10 INSTALLED? INSTANTANEOUS ON BOARD AMBIENT HW TANK SELECT THE PLANT CONFIGURATION - select CH ONLY if the appliance is a ‘heat’ only system boiler - select INSTANTANEOUS if the appliance is a combination boiler...
  • Page 47 FUNCTIONAL DIAGRAM...

  • Page 48: Section 9 - Lpg Instructions

    9. SECTION - LPG INSTRUCTIONS 9.1 RELATED DOCUMENTS BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW BS EN 12828 DESIGN FOR WATER-BASED HEATING SYSTEMS BS 5446 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 5440 PARTS 1 &...
  • Page 49 COMMISSIONING: CO AND COMBUSTION RATIO CHECK BEFORE CO AND COMBUSTION RATIO CHECK NOTE The installation instructions should have been followed, gas type verified and gas supply pressure/rate checked as required The air/gas ratio valve is factory-set and must not be prior to commissioning.

  • Page 50: Benchmark

    Benchmark Commissioning & Warranty Validation Service Record It is a requirement that the boiler is installed and commissioned to the manufacturers’ To instigate the boiler warranty the boiler needs to be registered with the manufacturer within one month of the installation. The warranty rests with the end-user (consumer), and they should be made aware it is ultimately their responsibility to register with the manufacturer, within the allotted time period.
  • Page 51 GAS BOILER SYSTEM COMMISSIONING CHECKLIST & WARRANTY VALIDATION RECORD Address: Boiler make and model: Boiler serial number: Commissioned by (PRINT NAME): Gas Safe registration number: Company name: Telephone number: Company email: Company address: Commissioning date: Heating and hot water system complies with the appropriate Building Regulations? Time, temperature control and boiler interlock provided for central heating and hot water Boiler Plus requirements (tick the appropriate box(s)) Weather compensation...
  • Page 52 SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the SERVICE/INTERIM WORK ON BOILER SERVICE/INTERIM WORK ON BOILER Date:...
  • Page 53 SERVICE & INTERIM BOILER WORK RECORD It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed. Service provider When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the SERVICE/INTERIM WORK ON BOILER SERVICE/INTERIM WORK ON BOILER Date:...

  • Page 54: Vokèra Warranty Terms And Conditions

    Vokèra Warranty Terms and Conditions Vokèra Ltd offer customers the comfort of a parts and labour warranty repair service subject to the following terms and conditions. Vokèra Ltd only obligation under the guarantee shall be to repair or replace the faulty appliance at Vokèra Ltd discretion.
  • Page 55 Health & Safety: Engineers will only attend to boiler products where it is considered by the engineer that the installation does not pose a risk to health and safety. A permanently fixed access ladder must service installations in lofts or attics. Adequate lighting and permanently fixed flooring must also be available.
  • Page 56 Registered address: Vokèra Ltd Borderlake House Unit 7 Riverside Industrial Estate London Colney Herts AL2 1HG www.vokera.co.uk www.vokera.ie Sales, General Enquires T 0844 391 0999 F 0844 391 0998 Vokèra Ireland West Court, Callan Co Kilkenny T 056 7755057 F 056 7755060 Vokèra Limited reserve the right to change specification without prior notice Consumers statutory rights are not affected.

This manual is also suitable for:

Vokera unica max 35c ng g.c.Vokera unica max 40c ng g.c.Vokera unica max 35c lpg g.c.Vokera unica max 40c lpg g.c.47-364-6147-364-62 ... Show all

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