Evolve 24C G.C. User Instructions
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Evolve 24C G.C. User Instructions

High efficiency combi boiler
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evolve
High efficiency combi boiler
Users Instructions
Installation &
Servicing
Instructions
evolve 24C G.C. N° 47-364-37
evolve 28C G.C. N° 47-364-38
evolve 32C G.C. N° 47-364-39
evolve 36C G.C. N° 47-364-40
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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Summary of Contents for Evolve 24C G.C.

  • Page 1 High efficiency combi boiler Users Instructions Installation & Servicing Instructions evolve 24C G.C. N° 47-364-37 evolve 28C G.C. N° 47-364-38 evolve 32C G.C. N° 47-364-39 evolve 36C G.C. N° 47-364-40 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.

  • Page 2: Table Of Contents

    1. THINGS YOU SHOULD KNOW ........... 3 2. GETTING STARTED ..............5 3. HOW TO..................12 4. WHAT IF ..................13 SECTION 1 - DESIGN PRINCIPLES AND OPERATING SEQUENCE ................... 15 SECTION 2 - TECHNICAL DATA ..........16 SECTION 3 - CONTROL PANEL (REC10) ........19 SECTION 4 - GENERAL REQUIREMENTS (UK) ......

  • Page 3: Things You Should Know

    INTRODUCTION Dear Customer Your Vokèra evolve boiler has been designed to meet and exceed the very latest standards in gas central heating technology, and if cared for, will give years of reliable use and efficiency. Please therefore take some time to read these instructions carefully.
  • Page 4 CONTROL PANEL (REC10) Depending on the type of application, some of the functions described in this manual might not be available. The REC 10 UI is a multi-functional control that enables you to view the operating status of your appliance at a glance; and is also used to adjust/set the various ‘User’...

  • Page 5: Getting Started

    2. GETTING STARTED 2.1 BEFORE SWITCHING ON In order to change zones (see above), highlight PLANT if necessary pressing the “up” and “down” keys. Before switching the appliance on, please familiarise yourself with: Then, pressing the “ok” and “back” keys, it will be possible - how to isolate the appliance from the gas, water, and electricity to select the other zones in this sequence (only if added and supplies;...
  • Page 6 2.6.2 Main zone 2.7.1 Heating Press the “up” and “down” keys to change the heating Selecting this function allows you to set the main zone’s setpoint temperature and confirm the selection by pressing status, by choosing one of the following options: “ok”.
  • Page 7 2.7.3 Preheating Pressing “back” takes you back to the initial screen without making any selection. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled, the symbol MENU 18/11/2013 12:17...
  • Page 8 2.10 TIME SCHEDULE BACKLIGHT The screen saver display (backlight off) is automatically Select the desired day using the “up” and “down” keys. activated when the time, that has been set in parameter \ A table will be displayed indicating the day and the time MENU \ SETTINGS \ BACKLIGHT, elapsed without having settings that have been pre-programmed.
  • Page 9 In order to confirm that the operation has been completed In order to confirm that the operation has been completed successfully, the display will show the table with the new time successfully, the display will show the table with the new time frame flashing.
  • Page 10 2.10.4 Copy In order to confirm that the operation has been completed successfully, the display will show the list of days to which the This function serves to copy the same scheduled programme scheduled programme has been copied. for other days of the week. Press “ok”...
  • Page 11 flashing water pressure low - verify the system pressure temporary 0.5 sec. on/0.5 off flashing water pressure high check system temporary 0.5 sec. on/0.5 off boiler board communication lost temporary BUS 485 communication lost temporary List of combustion faults ERROR ERROR MESSAGE DESCRIPTION OF TYPE OF ALARM CODE...

  • Page 12: How To

    3. HOW TO... 3.1 HOW TO TOP-UP THE SYSTEM PRESSURE 3.3 HOW TO SHUT DOWN THE SYSTEM FOR SHORT PERIODS The system pressure must be checked periodically to ensure the correct operation of the boiler. The system pressure is If necessary the boiler status can be switched to the OFF shown at the top of the LCD display or can be read on the position during short periods of absence.

  • Page 13: What If

    3.5 HOW TO CARE FOR THE APPLIANCE To clean the outer casing use only a clean damp cloth. Do not use any scourers or abrasive cleaners. Fig. 1 control valve control temporary valve connection flow/return double pipe check valve supply pipe 4.

  • Page 14: Installation And Servicing Instructions

    The evolve has a new ACC (Active Combustion Control) system. This booklet is an integral part of the appliance. It is therefore This new control system ensures functionality, efficiency and necessary to ensure that the booklet is handed to the person low emissions under any conditions.

  • Page 15: Section 1 - Design Principles And Operating Sequence

    SECTION 1 - 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 16: Section 2 - Technical Data

    SECTION 2 - TECHNICAL DATA 2.1 Central Heating evolve 24C evolve 28C evolve 32C evolve 36C Heat input (kW) 18.00 24.00 30.00 32.00 Maximum heat output (kW) 60/80°C 17.60 23.54 29.37 31.39 Minimum heat output (kW) 60/80°C 3.61 4.19 4.74 4.99...
  • Page 17 Minimum number of DHW fan rotations (rpm) 1,500 1,500 1,500 1,500 (*) CO tolerance= +0.6% -1% Parameter Symbol evolve evolve evolve evolve Unit Seasonal space heating energy efficiency class Water heating energy efficiency class Rated heat output Pnominal Seasonal space heating energy efficiency ηs...

  • Page 18: Pump Duty

    2.13 PUMP DUTY Fig. 4 shows the flow-rate available – after allowing for pressure loss through the appliance – for system requirements. When using this graph, apply only the pressure loss of the system. 1000 1100 1200 Portata impianto (l/h) Flow rate (l/h) Fig.

  • Page 19: Section 3 - Control Panel (Rec10)

    SECTION 3 - CONTROL PANEL (REC10) The REC10 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. The centre of the UI will normally display the current operating temperature (according to the mode of operation);...
  • Page 20 DEFAULT VALUE MINIMUM MAXIMUM ACCESS LEVEL MENU FACTORY SET VALUE VALUE NOTES VALUE SETTINGS USER TIME & DATE USER LANGUAGE ITALIANO / ENGLISH USER BACKLIGHT 5 min 1 min 15 min USER TIME SCHEDULE USER USER MAIN Only if POR = 1 USER ZONE1 Only if POR = 1...
  • Page 21 DEFAULT VALUE MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE FACTORY SET PARAMETERS INSTALLER TIMER OFF CH 3 min 0 min 20 min INSTALLER HYST ON HIGH TEMP 5°C 2°C 10°C SERVICE HYST OFF HIGH TEMP 5°C 2°C 10°C SERVICE HYST ON LOW TEMP 3°C 2°C...
  • Page 22 DEFAULT VALUE MINIMUM MAXIMUM ACCESS LEVEL VALUE VALUE NOTES VALUE FACTORY SET SWEEPER INSTALLER ACTIVATE FUNCTION INSTALLER DEACTIVATE FUNCTION INSTALLER MAX SPEED INSTALLER RANGE RATED SPEED RANGE RATED INSTALLER MIN SPEED INSTALLER CHANGE FAN SPEED Current speed INSTALLER F. NOT ACTIVE / DAILY FUNCTION / ANTI-LEGIONELLA WEEKLY FUNCTION INSTALLER...
  • Page 23 DEFAULT VALUE MINIMUM MAXIMUM ACCESS LEVEL FACTORY SET VALUE VALUE NOTES VALUE INSTALLER ADD HEAT PUMP Only if heat pump not configured HEAT PUMP INSTALLER INSTALLER REMOVE HEAT PUMP Only if heat pump configured USE FREE CONTACTS / USE BUS USE BUS USE BUS USE FREE CONTACTS...
  • Page 24 3.1 Access to the technical parameters Through the REC10 it is possible to access, using the TECHNICAL menu, a series of parameters that can be programmed to allow you to personalise the operation of the boiler: - select MENU on the initial page of the REC10 and press the key PLANT 18/05/2013...

  • Page 25: Section 4 - General Requirements (Uk)

    SECTION 4 - GENERAL REQUIREMENTS (UK) BS 5440 PART 1 FLUES BS 5440 PART 2 FLUES & VENTILATION BS 5449 PART 1 FORCED CIRCULATION HOT WATER 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...

  • Page 26: Section 4A - General Requirements (Eire)

    4.11 SHOWERS 4.6.8 FREQUENT FILLING Frequent filling or venting of the system may be indicative If the appliance is intended for use with a shower, the shower of a leak. Care should be taken during the installation of the should be thermostatically controlled and be suitable for use appliance to ensure all aspects of the system are capable of with a combination boiler.
  • Page 27 4A.4 FLUE SYSTEM 4A.6.8 FREQUENT FILLING Frequent filling or venting of the system may be indicative The terminal should be located where the dispersal of combustion of a leak. Care should be taken during the installation of the products is not impeded and with due regard for the damage appliance to ensure all aspects of the system are capable of and discoloration that may occur to building products located withstanding pressures up to at least 3 bar.

  • Page 28: Section 5 - Installation

    SECTION 5 - INSTALLATION 5.1 DELIVERY Due to the weight of the appliance it may be necessary for two people to lift and attach the appliance to its wall bracket. The appliance is contained within a heavy-duty cardboard carton. Lay the carton on the floor with the writing the correct way up. 5.2 CONTENTS Contained within the carton is: •...
  • Page 29 5.5 FITTING THE FLUE NOTE: Attach the decorative white plastic trim to the flue pipe at this point if it’s required. This appliance incorporates a ‘click-fit’ flue connection at the top of the appliance, and also incorporates a rear-flue connection. Attach the flue bend to the flue terminal ensuring that both pipes Should the rear-flue connection be preferred, the flue outlet will are fully inserted into the flue bend.
  • Page 30 aligned with the connector and insert the flue bend into the When reconfiguring the outlet from a top to a rear outlet, it is connector until it clicks into position (this is when the tabs at necessary to remove the ‘click-fit’ connector; replace all but points ‘A’...
  • Page 31 clicks into position (this is when the tabs at points ‘A’ are located IMPORTANT in the groove of the vertical flue connector - see fig. 18). Both The vertical flue terminal is 1.0 metre in length and cannot be screws (C) should now be tightened. cut;...

  • Page 32: Electrical Connections

    BS6798 provides comprehensive instruction and advice on all permissible condensate disposal methods; notwithstanding this, it is essential that the following is strictly adhered to: - use only plastic drainage pipe (minimum OD of 21.5mm) - horizontal runs must incorporate a minimum 45mm fall per metre, away from the appliance - external pipework and/or pipework in unheated areas, must have a minimum OD of 32mm and be insulated with Class-O...
  • Page 33 5.7.2 APPLIANCE MAIN ELECTRICAL SUPPLY INPUT PLANT 18/05/2013 12:17 The appliance is supplied with an electrical fly-lead (approx. 1.5m long) and the D-sub interface has a link wire inserted 1.5 bar MENU STATE across the TA terminals (5 & 6); these measures enable the Open Therm connected basic function of the appliance once the fly-lead is connected to the electrical supply.

  • Page 34: Section 6 - Commissioning

    SECTION 6 - COMMISSIONING 6.1 PRELIMINARY CHECKS TIME & DATE Before starting up the boiler, check: - confirm via the appliance data badge, that the appliance is ENTER TIME AND DATE suitable/configured for the gas type and electrical supply that has been provided to the appliance - inspect the entire flue system and ensure that it has been installed in accordance with these instructions and the 18 / 11 / 2013...
  • Page 35 6.2.1 BOILER CONFIGURATION RESET TIMER CH The REC10 UI is supplied with a default configuration that enables a standard type of external control, e.g. room thermostat & clock, programmable room thermostat, etc. to be connected to the appliance or alternatively the Vokera FUNCTION NOT ACTIVE BeSMART OT+ control.
  • Page 36 6.2.3 EMBEDDED CLOCK HEATING SCHEDULE INSTALL When the embedded clock is enabled (POR=1 - see above), a default heating schedule is used to manage the ON/OFF ZONES MANAGER timings for each day of the week (operating mode = AUTO). if necessary, the default heating schedule can be changed according to the User’s needs.
  • Page 37 In any case, the thermoregulation algorithm will not directly Using the REC10 it is possible to set the selected use the outdoor temperature, but rather a calculated outdoor thermoregulation curve: temperature that takes into account the building’s insulation: - in sequence select THERMOREGULATION and CLIMATIC in buildings that are well insulated, the outdoor temperature CURVES with the “up”...

  • Page 38: First Commissioning

    6.3 FIRST COMMISSIONING The vent cycle can be interrupted from the TECHNICAL menu of the REC10: - Carry out the procedure as detailed in section 6.1. - Ensure that all services (gas, water, electricity) are supplied - select VENT CYCLE with the “up” and “down” keys, and turned ON at the appliance.
  • Page 39 6.7 “PREHEATING” FUNCTION BOILER It is possible to access the PREHEATING function selecting SET on the main screen of the REC10. Setting PREHEATING = 1 the boiler’s domestic hot water function activates. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made.

  • Page 40: Reset Function

    6.9 RESET FUNCTION The function can be interrupted before its end by putting the appliance in a condition other than OFF or else by selecting In the unlikely event of the appliance entering a fault condition; DEACTIVATE FUNCTION from the relative menu. use the arrow buttons on the UI to navigate to the warning Note: The temperature and increase values can be set to triangle, and press select.
  • Page 41 - select ACTIVATE FUNCTION with the “up” and “down” When the checks are completed: keys, confirming the selection. - set the boiler to “SUMMER” or “WINTER” mode depending on the User’s requirements SWEEPER - regulate the heat request temperature values according to blu (-) the customer’s needs.
  • Page 42 24C Curva portata termica - giri ventilatore Caldaia Vision+ 24C PLUS HTG curve (Qnheating) 8400 8000 7600 7200 6800 6400 6000 5600 5200 4800 4400 4000 3600 3200 2800 2400 2000 1600 1200 Heat output (kW) Portata termica (kW)
  • Page 43 28C Curva portata termica - giri ventilatore Caldaia Vision+ 28C PLUS HTG curve (Qnheating) 8400 8000 7600 7200 6800 6400 6000 5600 5200 4800 4400 4000 3600 3200 2800 2400 2000 1600 1200 Portata termica (kW) Heat output (kW)
  • Page 44 32C Curva portata termica - giri ventilatore Caldaia Vision+ 32C PLUS HTG curve (Qnheating) 8400 8000 7600 7200 6800 6400 6000 5600 5200 4800 4400 4000 3600 3200 2800 2400 2000 1600 1200 Portata termica (kW) Heat output (kW)
  • Page 45 36C HTG curve (Qnheating) 8800 8400 8000 7600 7200 6800 6400 6000 5600 5200 4800 4400 4000 3600 3200 2800 2400 2000 1600 1200 Heat output (kW) CO s.a. curve (Qnheating) Heat output (kW)
  • Page 46 6.14 LIGHTS AND FAULTS In the unlikely event of appliance malfunction and/or a system fault, the appliance will enter a final or temporary fault condition, whereby it will shut down and a warning triangle will appear on the left side of the UI screen. Use the arrow buttons on the UI to navigate to the warning triangle, and press select.
  • Page 47 Boiler faults list ERROR DESCRIPTION OF ERROR MESSAGE RED LED GREEN LED RED and GREEN CODE ALARM TYPE E010 flame lockout/ACF electronic fault final flashing E011 extraneous flame transitional 0.2 sec. on/0.2 off flashing E020 limit thermostat final 0.5 sec. on/0.5 off E030 fan fault final...

  • Page 48: Combustion Parameters

    SUMMER WINTER SERVICE 6.17 SWITCHING OFF FOR LENGTHY PERIODS Refer to section 3.4 for detailed advice on shutting down the BOILER TYPE appliance for an extended period of time. evolve 24C BOILER evolve 28C evolve 32C evolve 36C SUMMER WINTER...

  • Page 49: Final Checks

    6.20 FINAL CHECKS - Select COMBUSTION OFFSET - Select RESTORE • ENSURE THE APPLIANCE FLUE SYSTEM IS FITTED CORRECTLY AND IS PROPERLY SECURED. - Press OK to confirm. • ENSURE ALL PIPE WORK IS RE-CHECKED FOR TIGHTNESS. COMBUSTION OFFSET • COMPLETE BENCHMARK CHECKLIST. FOR UK ONLY RESTORE Complete details of the boiler, controls, installation and...

  • Page 50: Section 7 - Servicing Instructions

    SECTION 7 - SERVICING INSTRUCTIONS 7.1 GENERAL 7.2.2 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 51 7.4.2 REC10 USER INTERFACE (UI) 7.4.5 BURNER Carry out the component removal procedure as outlined in 7.4. Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the appliance PCB cover as detailed in 5.7.3. Remove air/gas conveyor cover as detailed in 7.4.4.
  • Page 52 7.4.8 PRIMARY HEAT EXCHANGER 7.4.10 IGNITION TRANSFORMER Carry out the component removal procedure as outlined in 7.4. Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the front cover as detailed in 5.7.1. Disconnect wiring to fan.
  • Page 53 Replace in the reverse order ensuring that the 4-ports of the heat exchanger are correctly aligned with the corresponding ports of the hydraulic manifolds. Replace any worn or damaged seals with new ones. 7.4.13 CONDENSATE TRAP Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1.
  • Page 54 7.4.18.2 CYCLONIC SEPERATOR Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove both locking pins that secure the inlet and outlet pipes to the separator (D). Slacken - but do not remove - both screws that secure the outlet pipe on the main heat exchanger (allowing the pipe to rotate freely).
  • Page 55 7.4.20 SAFETY VALVE 7.4.24 FLUE SENSOR Carry out the component removal procedure as outlined in 7.4. Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the front cover as detailed in 5.7.1. Disconnect safety valve outlet pipe (A) from the safety valve.
  • Page 56 7.4.27 GUIDANCE ON THE REMOVAL & REPLACEMENT OF COMPONENTS The following table provide guidance on the removal and re- required skill level. This guidance is based on the assumption placement of components from the appliance with regards to that the removal of components will be undertaken using the average ‘R&R’...

  • Page 57: Section 8 - Checks, Adjustments And Fault Finding

    SECTION 8 - CHECKS, ADJUSTMENTS AND FAULT FINDING 8.1 CHECKING APPLIANCE OPERATION When the temperature of the flow sensor falls below the set point (- hysterisis), the burner will re-light. When carrying out any repairs or servicing to the appliance, NOTE the relevant commissioning procedure must be undertaken to ensure the continued safe operation of the appliance.

  • Page 58: Electrical Checks

    8.5 ELECTRICAL CHECKS 8.7 APPLIANCE STATUS AND FAULT CODES Any electrical checks must be carried out by a suitably qualified When the boiler detects a temporary fault condition, the person. appropriate code is shown. If/when the fault is final, the pump will perform 30 to 60-second post circulation (depending on the 8.5.1 EARTH CONTINUITY TEST error code) and fault code will be displayed.
  • Page 59 8.8.1 CONFIGURATION FROM AKM PCB the UI screen will display the firmware version – press any key to continue - Select configuration type: FROM AKM - select language (ENGLISH) - The REC10 will use the information/settings stored on the - enter the time and date AKM PCB to configure the appliance - select MASTER - select configuration type: NEW or FROM AKM (see below)
  • Page 60 8.11 TYPICAL CONNECTION FROM REMOTE PLANT PLANT ROOM THERMOSTAT AND CLOCK – CONNECTED TO THE ‘D-SUB’ INTERFACE FLUX SWITCH FLUX METER 8.9 ACCESS TO INSTALLATION PARAMETERS Warning! – Unqualified personnel and/or ‘end-users’ should not attempt to access or adjust ANY installation parameter;...
  • Page 61 FUNCTIONAL DIAGRAM...

  • Page 62: Section 9 - Lpg Instructions

    BS 5440 PART 1 FLUES BS 5482 PART 1 DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMANENT DWELLINGS 9.2 TECHNICAL DATA Gas Pressures evolve 24C evolve 28C evolve 32C evolve 36C Inlet pressure 37.0 mbar 37.0 mbar 37.0 mbar 37.0 mbar Maximum gas rate (CH) 1.40 (kg/h)
  • Page 63 TECHNICAL PARAMETERS VENT CYCLE EXHAUST PROBE RESET ALARM HISTORY COMBUSTION MONITORING SERVICE - select GAS TYPE COMBUSTION MONITORING GAS TYPE BOILER TYPE COMBUSTION OFFSET SERVICE - select LPG GAS TYPE SERVICE The boiler DOES NOT require additional adjustments. The boiler may only be converted by qualified staff. After conversion apply the new rating plate contained in the kit.

  • Page 64: Commissioning Checklist

    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 65: Benchmark

    Benchmark Commissioning and Servicing Section It is a requirement that the boiler is installed and commissioned to the manufacturers instructions and the data fields on the commissioning checklist completed in full. To instigate the boiler guarantee the boiler needs to be registered with the manufacturer within one month of the installation.

  • Page 66: Gas Boiler System Commissioning Checklist

    GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failuretoinstallandcommissionaccordingtothemanufacturer’sinstructionsandcompletethisBenchmarkCommissioningChecklistwillinvalidatethe warranty.Thisdoesnotaffectthecustomer’sstatutoryrights.

  • Page 67: Service Record

    SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider BeforecompletingtheappropriateServiceRecordbelow,pleaseensureyouhavecarriedouttheserviceasdescribedinthemanufacturer’sinstructions. Alwaysusethemanufacturer’sspecifiedsparepartwhenreplacingcontrols. SERVICE 01 SERVICE 02 Date: Date: Engineername: Engineername: Companyname: Companyname: TelephoneNo: TelephoneNo: GassaferegisterNo: GassaferegisterNo: Atmax.rate: COppm AND CO ²...
  • Page 68 RANGE RATED - EN 483 The max CH input of this boiler has been adjusted to_____ kW, equivalent to _____ rpm max CH fan speed. Date___/____/____ Signature _____________________ Boiler serial number _____________________ Registered address: Vokèra Ltd Borderlake House Unit 7 Riverside Industrial Estate London Colney Herts AL2 1HG enquiries@vokera.co.uk...

This manual is also suitable for:

28c g.c.32c g.c.36c g.c.

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