Vaillant VU 246/6-5 OVZ (P-GB) ecoTEC plus 424 P Installation And Maintenance Instructions Manual Download Page 43

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Appendix

0020239015_05 ecoTEC plus Installation and maintenance instructions

VU 246/6-5 OVZ (P-GB)

Flue gas temperature (50 °C/30 °C)
at P max.

℃

Flue gas temperature (50 °C/30 °C)
at P min.

℃

Flue gas temperature in hot water
handling mode

℃

Flue gas temperature when over-
heating

℃

Released system types

C13

Nominal efficiency at 80/60 °C

98.2 %

Nominal efficiency at 50/30 °C

102.0 %

Nominal efficiency at 40/30 °C

104.0 %

Product dimensions, width

375 mm

Product dimensions, depth

295 mm

Product dimensions, height

602 mm

Net weight

23 kg

Weight when filled with water

28 kg

Technical data

–

Electrics

VU 246/6-5 OVZ (P-GB)

Electric connection

230 V / 50 Hz

Built-in fuse (slow-blow)

T2/2A, 250V

Max. electrical power consump-
tion

29 W

Standby electrical power con-
sumption

2 W

Level of protection

IPX4D

Summary of Contents for VU 246/6-5 OVZ (P-GB) ecoTEC plus 424 P

Page 1: ...ion and maintenance instructions ecoTEC plus VU 246 6 5 OVZ P GB GB IE Publisher manufacturer Vaillant GmbH Berghauser Str 40 D 42859 Remscheid Tel 492191 18 0 Fax 492191 18 2810 info vaillant de www vaillant de ...

Page 2: ...6 Checking and treating the heating water filling and supplementary water 16 7 7 Filling the condensate trap 18 7 8 Switching on the product 18 7 9 Filling the heating installation 18 7 10 Checking the gas flow rate 18 7 11 Checking and adjusting the gas settings 18 7 12 Checking leak tightness 19 7 13 Checking the heating mode 19 8 Adapting the unit to the heating installation 20 8 1 Burner anti ...

Page 3: ...ompanying operating installation and servicing instructions for the product and any other system compon ents installing and fitting the product in accord ance with the product and system approval compliance with all inspection and main tenance conditions listed in the instruc tions Intended use also covers installation in ac cordance with the IP code Any other use that is not specified in these in...

Page 4: ...nstalled With the exception of short periods for testing purposes only operate the product when the front casing is installed and closed 1 3 7 Risk of death due to explosive and flammable materials Do not use the product in storage rooms that contain explosive or flammable sub stances such as petrol paper or paint 1 3 8 Risk of death from electric shock There is a risk of death from electric shock...

Page 5: ...orkshops cleaning businesses or similar locations choose a separate installation room in which the room air is technically free of chemical substances 1 3 13 Risk of material damage caused by frost Do not install the product in rooms prone to frost 1 3 14 Risk of being burned or scalded by hot components Only carry out work on these components once they have cooled down 1 3 15 Risk of material dam...

Page 6: ...oilers are very high efficiency appliances As a consequence the heat loss from the appliance casing during operation is very low Compartment ventilation is not required as the products are only certified and can only be fitted with a concentric flue system 3 3 Serial number The serial number is located on a plate behind the front flap The plate is in a plastic fish plate You can also display the s...

Page 7: ...your body Avoid rotational movements Instead reposition your feet If the unit is being lifted by two persons ensure your movements are coordinated during lifting Avoid bending your upper body do not lean forwards or to the side Wear suitable non slip protective gloves in order to pro tect your hands against sharp edges Ensure that you are carrying the load securely If required get somebody to assi...

Page 8: ...oved D 600 mm Dimension A can be reduced to 20 mm if there is a removable surface above the product 4 6 Clearance from combustible components It is not necessary to maintain a clearance between the product and components made of combustible materials that goes beyond the minimum clearances Page 8 4 7 Using the mounting template Use the mounting template to ascertain the locations at which you need...

Page 9: ...eaks Always remove only one side section never both side sections at the same time Note If there is sufficient lateral clearance at least 70 mm you can remove the side section to fa cilitate maintenance or repair work C D A B E 1 Tilt the electronics box forward 2 Hold on to the side section so that it cannot fall and unscrew both screws one from the top and one from the bottom 3 Tilt the side sec...

Page 10: ...supply required Install the following components Drain cocks at the lowest points in the heating install ation current version of BS 2879 A heating pump in the heating flow A bypass that is at least 1 5 m away from the product A stop cock in the gas pipe Where applicable a flow regulator valve to adjust the flow rate Pressure loss from the product 0 50 100 150 200 250 300 350 400 0 200 400 600 800...

Page 11: ...t purged properly this may result in ignition problems Ensure that the liquid gas tank has been purged properly before installing the product If required contact the filler or the liquid gas supplier 5 5 Using the correct gas type Using the incorrect gas type may cause fault shutdowns in the product Ignition and combustion noise may occur in the product Only use the gas type listed on the data pla...

Page 12: ...building that will remain frost free under long periods of low external temperatures During installation remove all burrs from inside of cut pipe work and avoid excessive adhesive which may trap small pockets of water close to the pipe wall which can freeze and build into a larger ice plug For any installation the condensate must be free flowing and not be possible for air back pressure to prevent...

Page 13: ...Ø19mm min Ø30mm 5 8 1 7 External termination into rain water down pipe Ø19mm min Ø30mm 5 9 Electrical installation Danger Risk of death from electric shock Continuous voltage is present at power sup ply terminals L and N even when the unit is switched off using the standby button Switch off the power supply Secure the power supply against being switched on again Only qualified electricians may car...

Page 14: ...mmon electricity supply for the boiler and for the corresponding controller Power supply Single phase 230 V 50 Hz Fuse protection 3 A 5 Open the electronics box Page 13 6 Observe the routing of the power supply cable 1 in the electronics box in order to guarantee that there is no strain 30 mm N L X1 230V RT 7 Carry out the wiring Page 14 8 Close the electronics box 9 Make sure that access to the m...

Page 15: ...call up the installer level if you are a competent person 2 Navigate to Menu Installer level and confirm by pressing 3 Set the value 17 code and confirm by pressing 6 3 Live Monitor status codes Menu Live Monitor Status codes in the display provide information on the pro duct s current operating status Status codes Overview Page 32 7 Start up 7 1 Carrying out the initial start up Initial start up ...

Page 16: ...ng Note This setting can be retroactively changed in the Diagnostics menu using D 026 D 027 and D 028 7 2 7 Contact data If required store your telephone number in the Appli ance config max 16 digits no blank spaces The oper ator can view the telephone number 7 2 8 Ending the installation assistant Once you have run through the installation assistant suc cessfully confirm by pressing The installat...

Page 17: ... 1 5 2 0 02 2 0 02 600 2 0 02 2 0 02 2 0 02 1 Nominal capacity in litres heating output in the case of multi boiler systems the smallest single heating output is to be used Caution The use of unsuitable heating water may cause aluminium corrosion and a result ing lack of leak tightness In contrast to steel grey cast iron or copper for example aluminium reacts with alkaline heating water pH value 8...

Page 18: ...om 5 10 24 7 1 92 2 02 1 73 25 7 2 00 2 10 1 80 30 6 2 38 2 50 2 14 Conditions Gas flow rate not in the permissible range Check all of the piping and ensure that the gas flow rates are correct Only put the product into operation once the gas flow rates have been corrected Conditions Gas flow rate in the permissible range End the check programme P 01 Allow the boiler to cool down by allowing pump o...

Page 19: ...leak tightness of the flue gas installation and flue gas recirculation 1 Check the flue gas installation is intact in accordance with the latest gas safe technical bulletin and informa tion supplied in the installation instructions 2 For extended flue gas installations check for flue gas recirculation using the air analysis point 3 Use a flue gas analyser 4 If you discover CO or CO2 in the supply ...

Page 20: ...23 5 25 5 28 0 55 13 5 15 0 17 0 19 0 20 5 22 5 60 10 5 11 5 13 0 14 5 15 5 17 0 TFlow target C Set maximum burner anti cycling time min 35 40 45 50 55 60 65 7 0 8 0 9 0 10 0 11 0 11 5 70 4 0 4 5 5 0 5 5 6 0 6 5 75 1 0 1 0 1 0 1 0 1 0 1 0 8 1 2 Resetting the remaining burner anti cycling time Press and hold the reset button for more than three seconds is shown in the display 9 Handing the product ...

Page 21: ...he heating flow and in the heating return 6 Close the service valve in the cold water pipe 7 Drain the product if you want to replace water bearing components of the product 8 Make sure that water does not drip on live components e g the electronics box 9 Use only new seals and O rings Do not use any addi tional components 10 6 Replacing defective components 10 6 1 Replacing the burner 1 Remove th...

Page 22: ...l the plug out of the PCB 3 Undo the clips on the PCB 4 Remove the PCB 5 Install the new PCB in such a way that it clicks into the groove at the bottom and into the clip at the top 6 Plug in the PCB plug 7 Close the electronics box 10 7 Checking the product for leak tightness Check that the product is leak tight Page 19 11 Inspection and maintenance 11 1 Using original seals If you replace compone...

Page 23: ...out the adjustment in increments of 1 8 turn and wait approximately 1 minute after each adjustment until the value has stabilised Compare the measured value with the corresponding value in the table Setting the CO value Great Britain front casing off front casing on Liquid gas Liquid gas G31 G31 CO at full load 10 1 1 10 3 1 Set for Wobbe index W 21 34 kW h m 21 34 kW h m O at full load 5 1 0 8 vo...

Page 24: ...t the folded down electronics box against sprayed water 1 4 Clean the ribs of the heat exchanger 1 with water The water runs out via the condensate tray 11 7 Checking the burner Check the surface of the burner for damage If you see any damage replace the burner 11 8 Checking the ignition electrode 1 2 3 4 5 1 Disconnect the connection 2 and the earthing cable 1 2 Remove the fixing screws 3 3 Caref...

Page 25: ...stall the air intake pipe 11 11 Draining the product 1 Close the service valves of the product 2 Start check programme P 06 3 Open the drain valves 4 Make sure that the air vent cap on the internal pump is open so that the product can be drained fully 11 12 Completing inspection and maintenance work 1 Check the gas connection pressure gas flow pressure Page 18 2 Check the CO content Page 22 11 13 ...

Page 26: ...ctions Annually 9 If the gas flow rate lies outside of the tolerances specified in these in structions eliminate the fault in accordance with the regulations and the current technology Annually 10 Check the general condition of the product and if required eliminate any faults that are found Annually 11 Carry out the combustion analysis Measure the CO content CO content and the CO CO ratio For prod...

Page 27: ...rd in these instructions Annually B Installer level Overview Setting level Values Unit Increment select explanation Default setting Min Max Installer level Enter code 00 99 1 competent person code 17 Installer level List of faults F XX F XX Current value Installer level Test programs Gas type check Current value Liquid gas natural gas Installer level Test programs Check programs P 00 Purging Yes N...

Page 28: ...essory relay 2 1 10 1 Circulation pump 2 External pump 3 Cylinder charging pump 4 Extractor hood 5 External solenoid valve 6 External fault message 7 Solar pump not active 8 eBUS remote control not active 9 Legionella protection pump not active 10 Solar valve not active 2 Heating partial load kW Partial load only full load only auto Auto Contact data Phone num ber 0 9 Auto Default setting On Off I...

Page 29: ...on pump 2 External pump 3 Cylinder charging pump 4 Extractor hood 5 External solenoid valve 6 External fault message 7 Solar pump not active 8 eBUS remote control not active 9 Legionella protection pump not active 10 Solar valve not active 2 Contact data Phone number 0 9 End the installation assistant Yes No Fault lists are only displayed and can only be deleted if faults have occurred C Overview ...

Page 30: ... Comfort continuously operating pump 3 Eco intermittent pump mode for the dissipation of the residual heat after hot water generation at an ex tremely low heat demand 1 Adjustable d 20 Maximum hot water set target temperature 50 60 1 50 Adjustable d 23 Status of the heating de mand Current value off Heating off Summer mode on Heating on Not adjustable d 24 Status of the pressure monitor 0 1 off No...

Page 31: ...le d 62 Night set back 0 30 1 0 Adjustable d 64 Average burner ignition time Current value s Not adjustable d 65 Maximum burner ignition time Current value s Not adjustable d 66 Activation of the warm start function for hot water off Function deactivated on Function activated 1 Adjustable d 67 Remaining burner anti cycling time setting under d 02 Current value min Not adjustable d 68 Number of uns...

Page 32: ...ition S 04 Heating mode Burner on S 05 Heating mode Pump fan overrun S 06 Heating mode Fan overrun S 07 Heating mode Pump overrun S 08 Heating mode Temporary shutdown after heating procedure Display in hot water handling mode with cylinder S 20 Hot water handling mode Requirement S 21 Hot water handling mode Advance fan operation S 22 Hot water handling mode Pump pre run S 23 Hot water handling mo...

Page 33: ... 25 Safety switch off Flue gas temperature too high Break in plug connection for optional flue gas safety temperature limiter STB break in cable harness F 27 Safety switch off Flame simulation Moisture on the electronics electronics flame monitor defective gas solenoid valve leaking F 28 Failure during start up Ignition unsuccessful Gas meter defective or gas pressure monitor has triggered air in ...

Page 34: ...ient water in the product check adjustable bypass connect external expansion vessel to the return F 76 Overheating protection on primary heat ex changer has responded Cable or cable connections for safety fuse in primary heat exchanger or primary heat exchanger defective F 77 Fault Flue non return flap condensate pump No response from flue non return flap or condensate pump defective F 83 Fault Fl...

Page 35: ...X1 X106 X32 X12 X35 X1 RT X21 L N L N 1 5 eBUS Burner off X106 M 4 3 2 1 N L 24V 230V 24V 230V 2 7 9 1 4 3 5 6 10 11 12 8 1 Main PCB 2 Interface PCB 3 Control system 4 Temperature sensor on the heating flow 5 Temperature sensor on the heating return 6 Fan 7 Gas valve assembly 8 Heating pump 9 Monitoring electrode 10 Room thermostat 11 Main power supply and connection for 230 V control 12 Ignition ...

Page 36: ...ewater pipes 75 mm E Below eaves 200 mm F Below balconies or car port roofs 200 mm G From vertical wastewater pipes or down pipes 150 mm H From external or internal corners 200 mm I Above floors roofs or balconies 300 mm J From a surface facing a terminal 600 mm K From a terminal facing a terminal 1 200 mm L From an opening in the car port e g door window which leads into the dwelling 1 200 mm M V...

Page 37: ...this manual 1 Dimensions D E F and G These clearances may be reduced to 25 mm without affecting the performance of the boiler In order to ensure that the con densate plume does not affect adjacent surfaces the terminal should be extended as shown below Balcony eaves Gutter Adequately secured air flue gas pipe The flue pipe must protrude beyond any overhang 2 Dimension H This clearance may be reduc...

Page 38: ...ecoTEC plus 0020239015_05 H Commissioning Checklist Heating and Hotwater Industry Council HHIC www centralheating co uk Benchmark Commissioning and Servicing Section It is a requirement that the boiler is installed and commissioned to the completed in full ...

Page 39: ...ith the appropriate Building Regulations and then handed to the customer to keep for future reference GAS BOILER SYSTEM COMMISSIONING CHECKLIST CONTROLS Optimum start control Fitted Fitted Fitted Fitted ALL SYSTEMS Yes Yes CENTRAL HEATING MODE OR mbar OR mbar COMBINATION BOILERS ONLY Yes Yes DOMESTIC HOT WATER MODE OR mbar OR mbar Yes Temperature CONDENSING BOILERS ONLY Yes ALL INSTALLATIONS AND R...

Page 40: ...ng system is serviced regularly and that the appropriate Service Interval Record is completed Service Provider SERVICE RECORD SERVICE 01 AND AND SERVICE 02 AND AND SERVICE 03 AND AND SERVICE 04 AND AND SERVICE 05 AND AND SERVICE 06 AND AND SERVICE 07 AND AND SERVICE 08 AND AND SERVICE 09 AND AND SERVICE 10 AND AND ...

Page 41: ...how to set boiler to minimum rate contact Technical Helpline for advice CHECK CO AND COMBUSTION RATIO AT MINIMUM RATE With boiler still set at minimum rate insert analyser probe into flue gas sampling point Allow readings to stabilise before recording NOTE If no flue gas sampling point is present and the correct procedure is not specified in the manual consult boiler manufacturer for guidance CHEC...

Page 42: ...ective output range P at 50 30 C 8 0 25 7 kW Effective output range P at 80 60 C 7 6 24 3 kW Domestic hot water heat output P 8 0 30 0 kW Maximum heat input heating Q max 24 7 kW Minimum heat input heating Q min 7 7 kW Maximum heat input hot water Q max 30 6 kW Minimum heat input hot water Q min 7 7 kW Technical data General VU 246 6 5 OVZ P GB Diameter of the gas pipe 1 2 inch Diameter of the hea...

Page 43: ...ystem types C13 Nominal efficiency at 80 60 C 98 2 Nominal efficiency at 50 30 C 102 0 Nominal efficiency at 40 30 C 104 0 Product dimensions width 375 mm Product dimensions depth 295 mm Product dimensions height 602 mm Net weight 23 kg Weight when filled with water 28 kg Technical data Electrics VU 246 6 5 OVZ P GB Electric connection 230 V 50 Hz Built in fuse slow blow T2 2A 250V Max electrical ...

Page 44: ...gas 3 Inspection work 22 Installation assistant ending 16 Installation assistants restarting 16 Installation site 4 Installer level calling up 15 Installing the front casing 9 Installing the side section 9 Intended use 3 L Language 15 Leak tightness 19 22 25 Liquid gas 4 11 M Mains connection 14 Maintenance work 22 Minimum clearance 8 Multi functional module 16 O Open flued operation 4 Operating c...

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Page 48: ...re DE56 1JT Telephone 0330 100 3461 info vaillant co uk www vaillant co uk These instructions or parts thereof are protected by copyright and may be reproduced or distributed only with the manufacturer s written consent We reserve the right to make technical changes 0020239015_05 ...

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