Contents Contents Calling up appliance config. and diagnostics menu..............20 Performing a gas family check ......20 Safety ..............4 Using check programmes ........22 Action-related warnings ......... 4 7.10 Checking and treating the heating water/filling Intended use ............4 and supplementary water ........
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Contents 10.9 Preparing the repair work ........37 10.10 Replacing defective components......37 10.11 Completing repair work........42 Decommissioning..........42 11.1 Decommissioning the product ......42 Recycling and disposal........42 Customer service..........42 13.1 Customer service..........42 Appendix ................43 Pipe lengths in the B23P installation....
1 Safety – compliance with all inspection and main- Safety tenance conditions listed in the instruc- Action-related warnings tions. Classification of action-related warnings Intended use also covers installation in ac- The action-related warnings are classified in cordance with the IP code. accordance with the severity of the possible Any other use that is not specified in these in- danger using the following warning signs and...
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Safety 1 ▶ If possible, open doors and windows fully 1.3.6 Risk of poisoning and burns caused by escaping hot flue gases and ensure adequate ventilation. ▶ Do not use naked flames (e.g. lighters, ▶ Only operate the product if the air/flue pipe matches).
1 Safety ▶ Ensure that the combustion air is not 1.3.12 Risk of death from escaping flue gas routed through chimneys which have If you operate the product with an empty con- previously been used with floor-standing densate siphon, flue gas may escape into the oil-fired boilers, or with other boilers, room air.
Notes on the documentation 2 Notes on the documentation Information on the Meaning data plate Observing other applicable documents Type (e.g. C Approved flue connections ▶ You must observe all the operating and installation in- PMS (e.g. 3 bar Maximum water pressure in heating (0.3 MPa)) mode structions included with the system components.
3 Product description ÖVGW symbol 3-port valve Heating drain cock Heating air separator Pressure sensor (filling the spiral im- Gas valve assembly mersion heater for the Electronics box domestic hot water cyl- inder) Heating expansion The ÖVGW symbol shows that the products comply with vessel all of the requirements for assigning the ÖVGW symbol in accordance with the identification plate.
Set-up 4 Set-up 4.2.3 Scope of delivery Applicability: Germany Unpacking the product Quant- Designation Heat generator Enclosed documentation Bag with seals proKlima set (VSC 146.. and VSC 206..) Gas conversion set Unit dimensions 70 70 Remove the packaging surrounding the unit. Remove the front casing.
4 Set-up Unit dimensions Transporting the unit 150L Danger! Dimension Risk of injury due to carrying heavy loads. 1,640 mm Carrying heavy loads can cause injuries. Dimension 941 mm ▶ When transporting heavy units, observe Dimension all valid laws and other regulations. 770 mm Dimension 1,577 mm...
Set-up 4 ≤40 mm Never transport the unit as illustrated above. ▶ Install the cylinder temperature sensor as shown in the figure. To transport the unit safely, use the two carrying handles on the two front feet of the unit. After you have set up the unit, cut off the carrying handles and dispose of them in accordance with the relevant regulations.
4 Set-up Setting up the unit horizontally 4.11 Installing/removing the side casing ▶ Refit the components in the reverse order. ▶ Use the adjustable feet to set up the unit horizontally. 4.12 Moving the electronics box into the lower or upper position 4.10 Removing/installing the front casing...
Installation 5 ▶ 4.13 Removing/installing the vacuum chamber's Only solder connectors if the connectors front panel are not yet screwed to the service valves. Information on liquid gas operation In the as-supplied condition, the product is preset for opera- tion with the gas group indicated on the data plate. Applicability: Except Belgium If you have a product that has been preset for operation with natural gas, you must convert it to run on liquid gas.
5 Installation – Loss of pressure between the gas meter and the Caution. product: ≤ 1 mbar Risk of material damage caused by corro- Purge the gas pipe before start-up. sion 10. Check whether the connections (→ Page 26) are leak- Due to non-diffusion-tight plastic pipes in the tight.
Installation 5 Insert a screwdriver into the slot between the test points. Carefully exert pressure on the screwdriver (A). Turn the connector anti-clockwise (B) as far as it will go and then remove it by pulling it upwards (C). Insert the new connector. In doing so, pay attention to the latching lugs.
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5 Installation 5.6.2 Carrying out the wiring Danger! Risk of death from electric shock as a res- 230V ult of an improper electrical connection! An improper electrical connection may neg- atively affect the operational safety of the 24V / eBUS product and result in material damage or per- sonal injury.
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Installation 5 5.6.3 Establishing the power supply If you install the product in protective area 2, it must be operated as room-sealed. Installation method B53P is Caution. not permitted in this case. Risk of material damage due to high con- Open the electronics box.
6 Operation ▶ – You must only access the installer level if Solar pump (not active) – you are an approved competent person. eBUS remote control (not active) – Legionella protection pump (not active) – Solar valve (not active). Note The installer level is protected against unauthor- 5.6.6.1 Using the auxiliary relay ised access using a password.
Start-up 7 Checking the factory setting Conditions: The product design is not compatible with the local gas group Applicability: Except Belgium ▶ Do not start up the product. ▶ Change the type of gas in accordance with your system. Caution. Risk of material damage caused by mak- Conditions: The product design is compatible with the local gas group ing unauthorised settings.
7 Start-up 7.5.1 Language Restarting the installation assistants ▶ Set the required language. You can restart the installation assistant at any time by call- ▶ ing it up in the menu. Press (OK) twice to confirm the set language and to avoid unintentionally changing it.
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Start-up 7 Result Meaning Measure Result Meaning Measure "Warning" Combustion Start check programme "Warning" Combustion Start check programme quality inad- P.01 and adjust the CO₂ quality inad- P.01 and adjust the CO₂ equate. value with the adjusting equate. value with the adjusting screw in the Venturi.
7 Start-up Result Meaning Measure P.01 Maximum load check programme: After successful ignition, the product is operated at "Warning" Combustion Start check programme maximum heat input. quality inad- P.01 and adjust the equate. CO₂ content with the P.02 Minimum load check programme: adjusting screw in the CO₂...
Start-up 7 Checking the filling and supplementary water We accept no liability for the compatibility of any additive or ▶ its effectiveness in the rest of the heating system. Before filling the installation, measure the hardness of the filling and supplementary water. Additives for cleaning measures (subsequent flushing required) Treating the filling and supplementary water...
7 Start-up 7.13 Filling and purging the heating installation 15. Check all connections and the entire system for leaks. 16. To purge the heating installation, select the check pro- Preliminary work gramme P.00. ▶ Flush the heating installation thoroughly before filling it. ◁...
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Start-up 7 Conditions: Gas connection pressure not in the permissible range Caution. Risk of material damage and operating faults caused by incorrect gas connec- tion pressure. If the gas connection pressure lies outside the permissible range, this can cause oper- ating faults in and damage to the product.
(1). If the measured values are not in the specified range, you must not start up the product. If this is the case, inform Vaillant Customer Service. ▶ Pierce the covering cap (1) at the mark using a small Compare the measured value with the corresponding flat-blade screwdriver and unscrew it.
Adapting the unit to the heating installation 8 – Menu → Live Monitor Setting the maximum flow temperature ◁ If the hot water generation is working correctly, the You can use diagnostics code D.071 to set the maximum display shows S.24 after a few minutes. flow temperature for heating mode (default setting: 75 °C).
8 Adapting the unit to the heating installation 8.6.2 Resetting the remaining burner anti-cycling Setting the pump output time Applicability: Germany 1st option The product is equipped with a speed-regulated high-effi- Menu → Reset anti-cycl. time ciency pump, which adjusts independently to the hydraulic The current burner anti-cycling time appears in the display.
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Adapting the unit to the heating installation 8 8.8.1.2 Pump characteristic line for 25 kW 8.8.2 Setting the pump output for promotion programmes Applicability: Germany Characteristic line for proKlima (14 and 20 kW) 1000 1500 A Bypass Bypass in factory set- closed/Vmax/code ting/Vmax/code d14=0 d148=8 (boost)
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8 Adapting the unit to the heating installation Note Conditions: The hydraulics in the heating system or the heating sys- tem itself is suitable for this type of pump operation. The bypass valve remains inoperative as – The pump is only operated at this pump speed. the pump speed is not sufficient to open The hydraulic power of the pump for transferring it (provided the factory settings remain...
Adapting the unit to the heating installation 8 ▶ ▶ Set the pressure using the adjusting screw (1). Set the pressure using the adjusting screw (1). Position of the Pres- Position of the Pres- Notes/application Notes/application adjusting screw sure adjusting screw sure If the radiators do not heat If the radiators do not heat...
9 Inspection and maintenance to comply with the applicable regulations Using the function menu regarding legionella prevention. The function menu allows you to actuate and test individual components in the heating installation. Inform the end user that the specifications for domestic Menu →...
Inspection and maintenance 9 ▶ Replace the self-locking nuts on the burner flange each time you open the burner flange. ▶ If the heat insulation on the burner flange or on the back wall of the heat exchanger shows signs of damage, replace the heat insulation.
9 Inspection and maintenance Installing the compact thermal module Rinse away any loose dirt with a sharp jet of water or use a plastic brush. Do not point the water jet directly at the heat insulation (1) on the back of the heat ex- changer.
Inspection and maintenance 9 Open the purging valve (2). If the initial pressure is below 0.75 bar (depending on the static pressure height of the heating installation), use nitrogen to fill the expansion vessel. If this is not 9.10.2 Draining the unit's process water circuit available, use air.
Operating instructions). (→ Page 49) ▶ If you are unable to remedy the fault and the fault recurs despite several fault clearance attempts, contact Vaillant 9.15.1 Checking the product for leak-tightness Customer Service. ▶ Check that the product is leak-tight. (→ Page 26) 10.4...
Troubleshooting 10 10.10.2 Replacing the fan Overview of fault codes (Applicability: ecoCOMPACT) 10.5 Resetting the fault memory ▶ To delete the entire fault list, press (Delete, OK) twice. 10.6 Performing diagnostics ▶ You can use the function menu to actuate and test in- dividual components of the product during the fault dia- gnostics.
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10 Troubleshooting Note Each destroyed seal must be restored. 11. Remove the gas valve's bracket (2) from the fan by loosening the three screws (1). 12. Replace the defective fan. Remove the air intake pipe. Remove the plugs (3) from the gas valve. Remove the plug from the sensor on the Venturi (1) by pushing in the latching lug.
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Troubleshooting 10 10.10.4 Replacing the Venturi Applicability: Austria Danger! Risk of poisoning due to increased CO values. An incorrect gas restrictor size can lead to increased CO values. ▶ When replacing the Venturi, ensure that you use the correct gas restrictor (colour coding and position of pins on the underside of the gas restrictor).
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10 Troubleshooting case, replace the gas restrictor with an appropriate Note spare part. Check whether the colour of the jet actually matches the colour of the PCB's coding Applicability: Belgium resistor. ▶ After installing the new Venturi jet, check the type of Note which way the jet is installed.
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Troubleshooting 10 10.10.7 Replacing the PCB and/or the display 12. Install the new heat exchanger in reverse order. 13. With the new heat exchanger, ensure that you use the Caution. cable with a coding resistor and the correct plug. Risk of material damage caused by incor- rect repairs.
Anrufen aus dem Mobilfunknetz ggf. abweichende Tarife - nähere Information erhalten Sie bei Ihrem Mobilnetzbetrei- ber) Der flächendeckende Kundendienst für ganz Österreich ist täglich von 0 bis 24 Uhr erreichbar. Vaillant Kundendienst- techniker sind 365 Tage für Sie unterwegs, sonn- und feier- tags, österreichweit. Applicability: Belgium N.V.
Appendix Appendix Pipe lengths in the B23P installation Applicability: Germany Note The maximum pipe length (straight pipe only) corresponds to the maximum permitted flue gas pipe length without any elbows. If elbows are used, the maximum pipe length must be reduced in accordance with the dynamic flow characteristics of the elbows.
Appendix Installer level menu structure – Overview Menu Information Reset burner off time Installer level Back Select Enter code Installer level F.00 Fault list F.75 Interruption Test programs Fault Appliance config. Flow sensor Pump water shortage Back Back Select Installer level Test programs Gas type check P.00...
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Appendix Default User-spe- Code Parameter Values or explanations setting cific setting D.002 Max. burner anti-cycling time heating 2 … 60 min 20 min at 20 °C flow temperature D.003 Parameter not in use for this product Not ad- justable D.004 Cylinder domestic hot water temper- In °C Not ad- ature...
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Appendix Default User-spe- Code Parameter Values or explanations setting cific setting D.074 Anti-legionella function 0 = Off 0 = Off 1 = On Thermal disinfection is carried out every 24 hours D.075 Maximum charging time for the 20 - 90 min 45 mins domestic hot water cylinder D.076 Device specific number...
Appendix Default User-spe- Code Parameter Values or explanations setting cific setting D.127 Status of the external current anode 0: Function deactivated or no anode present Adjustable 1: Anode present and operating 2: Anode present, but faulty Inspection and maintenance work – Overview Mainten- ance Inspection...
Appendix Status code Meaning S.96 Return sensor test running, heating demands are blocked. S.97 Water pressure sensor test running, heating demands are blocked. S.98 Flow/return sensor test running, heating demands are blocked. S.105 Low heating flow rate, carry out purging P00 again. (Proklima) Overview of fault codes Applicability: ecoCOMPACT Code...
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Appendix Code Meaning Cause F.52 Mass flow sensor connection fault Mass flow sensor not connected/disconnected, plug not connected or incorrectly connected F.53 Mass flow sensor fault Gas flow pressure too low, filter under Venturi filter cap wet or blocked, mass flow sensor defective, internal pressure measuring point in Venturi blocked (do not use lubricant on Venturi O-ring.) F.54 Gas pressure fault (in combination with...
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Appendix Code Meaning Cause F.93 Gas group fault Combustion quality outside the permitted range: Incorrect gas injector, recirculation, incorrect gas group, internal pressure measuring point in Venturi blocked (do not use lubricant on the O-ring in the Venturi). Commu- No communication with the PCB Communication fault between display and PCB in the electronics box nication fault...
Appendix Wiring diagram Burner off X100 eBUS 230V~ Main PCB Temperature sensor for the hot water flow Interface PCB Temperature sensor in the heating flow Coding resistor for the gas group Temperature sensor in the heating return Coding resistor output range Pre-fitted plug for safety temperature limiters Venturi Installation and maintenance instructions ecoCOMPACT 0020181421_04...
Appendix Gas valve assembly Heating pump Temperature sensor in the cylinder Main power supply 3-port valve Ignition electrode Pressure sensor On/off button Volume flow sensor Gas adjustment values as set at the factory G20 natural G25 natural Set values Unit propane 9.2 ±...
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Appendix Technical data – Power/loading G25 VCC_206-4-5_150 VCC_266-4-5_150 Effective output range (P) 4.3 … 21.5 kW 5.9 … 27.1 kW at 50/30 °C Effective output range (P) 3.8 … 20.0 kW 5.2 … 25 kW at 80/60 °C Hot water heat output 3.8 …...
Appendix VCC_206-4-5_150 VCC_266-4-5_150 Gas supply pressure (G25) 2 kPa 2 kPa Gas flow at P max. – hot water (G20) 2.59 m³/h 3.24 m³/h Gas flow at P max. – hot water (G25) 3.01 m³/h 3.76 m³/h CE number (PIN) 1312CO5870 1312CO5871 Smoke mass flow in heating mode at P min.
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Appendix VCC_206-4-5_150 VCC_266-4-5_150 VCC_306-4-5_150 Approximate value for the 1.82 l/h 2.87 l/h 3.09 l/h condensate volume (pH value between 3.5 and 4.0) at 50/30 °C ΔP heating at nominal flow 0.029 MPa 0.029 MPa 0.021 MPa (ΔT = 30 K) Technical data –...
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Appendix Technical data – Domestic hot water VCC_206-4-5_150 VCC_266-4-5_150 VCC_306-4-5_150 Specific flow rate (D) (ΔT 24.7 l/min 26.2 l/min 26.8 l/min = 30 K) in accordance with EN 13203 Continuous flow rate (ΔT = 591 l/h 738 l/h 741 l/h 35 K) Specific flow rate (ΔT = 35 21.2 l/min...
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Appendix Technical data – Electrics VCC_206-4-5_150 VCC_266-4-5_150 VCC_306-4-5_150 Electric connection 230 V / 50 Hz 230 V / 50 Hz 230 V / 50 Hz Built-in fuse (slow-blow) T4A/250 T4A/250 T4A/250 Max. electrical power con- 105 W 105 W 105 W sumption Standby electrical power 2.1 W...
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Appendix 0020181421_04 ecoCOMPACT Installation and maintenance instructions...
Index Index Display Replacing............... 41 Disposal, packaging ............42 Air/flue pipe ................. 15 Disposing of the packaging ..........42 Air/flue pipe unit connection piece........15 Documents ................7 Air/flue pipe, installed ............5 Domestic hot water temperature Setting................20 Appliance config. Calling up...............
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Index Liquid gas ................ 5, 13 Scale ................... 31 Live Monitor Schematic drawing ..............5 Calling up............... 18 Self-test ................32 Serial number ................ 7 Maintenance interval Service message..............36 Setting................28 Service partner ..............36 Maintenance work ............. 49 Setting the pump output ............
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