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- Page 1 Installation and maintenance instructions ecoTEC exclusive VCW 266/5‑7 (N-DE) Publisher/manufacturer Vaillant GmbH Berghauser Str. 40 D-42859 Remscheid Tel. +49 21 91 18‑0 Fax +49 21 91 18‑2810 info@vaillant.de www.vaillant.de...
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Page 2: Table Of Contents
Technical data............ 45 Checking and treating the heating water/filling and supplementary water ........17 Index ................... 49 Preventing low water pressure ......18 Filling the heating installation ......18 Purging the heating installation ......18 Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 3: Safety
IP code. ▶ Alert the police and fire brigade as soon as Any other use that is not specified in these you are outside the building. instructions, or use beyond that specified in 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 4 Cabinet-type casing can give rise to danger- ▶ In order to operate the product, ensure that ous situations when used on a product which the condensate siphon is always full. is operated with an open flue. Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
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Page 5: Regulations (Directives, Laws, Standards)
The corrugated gas pipe may become dam- aged if weight is placed on it. ▶ Do not suspend the compact thermal module on the flexible gas pipe, for example during maintenance work. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 6: Notes On The Documentation
Automatic air vent Connection for the Manometer air/flue pipe Expansion relief valve All-gas sensor High-efficiency pump Expansion vessel Prioritising diverter Water hammer arrester valve Differential pressure sensor Secondary heat ex- Communication unit changer (optional) Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 7: Dvgw Mark
Condensate discharge connection Hot water connection Condensate siphon Gas connection R1 tundish/condensate Cold water connection siphon connection Flue pipe connection Heating return Consult the installation template that is supplied to find the dimension A. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 8: Minimum Clearances
Conditions: The fixing material may not be used for the wall ▶ Wall-mount the product as described in the illustration using the permitted fixing material provided on-site. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 9: Removing The Front Casing
Install the supply lines without tension. Caution. Risk of material damage due to the gas leak-tightness test. At a test pressure of >11 kPa (110 mbar), gas leak-tightness tests may cause damage to the gas valve. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 10: Installation Requirements
(propane quality) so that it is clearly visible on valve. Lay as short a drain line as possible, at a down- ward gradient away from the tundish. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 11: Installing The Gas Connection
Install the discharge pipe for the expansion relief valve so that it does not interfere with the removal and fitting of the lower section of the siphon. ▶ Establish the heating connections (1) in accordance with the relevant standards. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 12: Flue Installation
If required, install the connection piece for the ▶ Switch off the power supply. separate air/flue gas ducting, 80/80 mm diameter. ▶ (→ Page 12) Secure the power supply against being switched on again. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... - Page 13 Connect the wiring in accordance with the wiring dia- connection diagram in the appendix. gram that is included in the appendix. Conditions: Connecting a weather-compensated control or room temperat- ure control via eBUS ▶ Connect the control to the eBUS connection. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
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Page 14: Operation
Press at the same time. components with the multi-functional module. Navigate to Menu → Installer level and confirm by pressing Set the value 17 (code) and confirm by pressing Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 15: Live Monitor (Status Codes)
10 seconds of switching flow) (default setting: 200 mbar). the system on, the basic display reappears. ▶ To access the next point, confirm by pressing in each case. 7.2.1 Language ▶ Set the required language. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 16: Restarting The Installation Assistants
P.02 Minimum load check programme: sible close to the filler nozzle. After successful ignition, the product is operated at minimum heat input. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 17: Checking And Treating The Heating Water/Filling And Supplementary Water
If the entire filling and supplementary water quantity dur- the end user about the measures that are required. ing the operating life of the system exceeds three times the nominal volume of the heating installation, or 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 18: Preventing Low Water Pressure
Purge the lowest radiator until water flows out of the Secure the lower section of the siphon to the condens- purging valve without bubbles. ate siphon. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 19: Starting Up The Heat Generator
If the gas flow pressure lies outside the per- missible range, this can cause operating faults in and damage to the product. ▶ Do not make any adjustments to the product. ▶ Do not start up the product. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 20: Checking Leak-Tightness
→ D.002 Max. anti-cycl. time: Heating and con- measuring programme several times. During firm by pressing the calibration process, no flue gas analysis is possible. Set the burner anti-cycling time and confirm by pressing Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 21: Setting The Maintenance Interval
[hPa (mbar)], factory mand sons operating time of one year setting marked (dependent upon the system type) 1 ‑ 2 1050 h 5.0 kW 2 ‑ 3 1150 h 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 22: Hydraulic Check
The product switches back to the normal operat- ing mode. ▶ To establish whether or not a component is defective, read the fault memory. (→ Page 23) Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 23: Eliminating Faults
Install a new seal (2) on the new burner. Install the compact thermal module. (→ Page 28) 9.7.2 Replacing the gas valve Switch off heating mode and hot water generation (→ Operating instructions). 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 24 Unscrew the cap nut (3) on the hot water pipe to the secondary heat exchanger. Remove the hot water pipe (4) from the connection on the heat exchanger and take it out of the product. Ensure that you do not damage the heat insulation. Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 25 Vaillant spare part. If no lubricant is included If you are replacing the PCB, remove the coding res- with the Vaillant spare part, use only water or istor (1) (plug X24) from the old PCB and plug the plug commercially available soft soap.
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Page 26: Completing Repair Work
Undo the screws (3) just enough so that you can pull out the all-gas sensor by the cable (2). Remove the plug (1) by pushing in the latching lug. Reinstall the new all-gas sensor in the reverse order. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 27: Working On The Compact Thermal Module
Do not point the water jet directly at the insulating mat on the rear of the heat exchanger. ◁ The water flows out of the heat exchanger through the condensate siphon. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 28: Cleaning The Condensate Siphon
11. Secure the air intake pipe with the retaining screw. and fit the casing. 12. Check the gas flow pressure. (→ Page 19) 14. Retighten the cap nuts and the lock nuts on the cold water inlet. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 29: Draining The Product
The display goes out. ▶ Close the gas isolator cock. ▶ For products with hot water generation and products with a connected domestic hot water cylinder, you must also close the cold water stop valve. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 30: Appendix
Installer level → Appliance config. → – – – Language Languages available for selection Country- specific ℃ – Target flow temp. ¹Fault lists are only displayed, and can only be deleted, if faults have occurred. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... - Page 31 Purge program: Select circ. using Automatic adaptive purging of the heating circuit and hot water circuit Not active Active ¹Fault lists are only displayed, and can only be deleted, if faults have occurred. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
- Page 32 2: Propane 30/37 mbar – – Contact details Phone number – – – – End the installation assistant? Yes, No ¹Fault lists are only displayed, and can only be deleted, if faults have occurred. Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
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Page 33: C Overview Of Diagnostics Codes
D.015 Pump speed actual value Current value High-efficiency pump Not ad- justable – – D.016 Controller 24 V DC: Heat- Current value Heating mode Not ad- ing mode justable 0: Off 1: On 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 34 5 = External solenoid valve 6 = External fault message 7 = Solar pump (not active) 8 = eBUS remote control (not act- ive) 9 = Anti-legionella pump (not act- ive) 10 = Solar valve (not active) Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 35 Nominal value set in factory – D.051 Offset max. speed -990 Nominal value set in factory – – D.052 Min. gas valve steps offset The offset is specified at the gas valve assembly. 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
- Page 36 – – – D.083 DHW burner starts Current value Not ad- justable „– – –” – D.084 Maintenance in 3000 Number of hours until the next maintenance "– – –" = Deactivated Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 37 16: Reference voltage too high D.122 Pressure level mbar – D.130 Hydraulic operating mode 0: Without bypass valve 1: 40% (low loss head.) 2: 60% (low loss head.) 3: 100% (low loss head.) 4: With bypass valve 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
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Page 38: D Status Codes - Overview
No heat demand: Summer mode control S.32 Waiting time deviation: Fan speed Waiting period because of fan speed deviation Waiting period: Air pressure sensor/switch reports that S.33 Waiting time: Air monitor the pressure signal is too low Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 39: E Overview Of Fault Codes
NTC defective F.02 Interruption: DHW outlet sensor Only in conjunction with F.91 NTC defective, NTC cable defective, defective plug connection on NTC, defective plug connection on the actoSTOR electronics 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 40 Pressure switch Check: Cable harness, vacuum hose (blockage), supply air/flue gas route (blockage), panel (correct type), flue pipe (length), air pressure sensor, settings (if necessary, switch D.132 to multiple-flue configura- tion), pressure switch, fan. Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 41 (cable, electrode), flue gas recirculation, condensate route F.70 Fault: Invalid Device Specific Number If spare parts fitted: Display and PCB replaced at same time and DSN not reset, incorrect or missing output range coding resistor 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
- Page 42 LED on: Communication OK actoSTOR LED flashing: Communication not OK module LED off: No power supply Commu- Communication fault Communication fault between display and PCB in the electronics box nication fault Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
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Page 43: F Wiring Diagram 12 - 35 Kw
Appendix Wiring diagram 12 - 35 kW +24V Hallsignal Masse X100 X40 X51 X100 230V~ X101 X101 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... -
Page 44: G Inspection And Maintenance Work - Overview
(do not use compressed air for this) and replace the sensor if it is damaged. Open the gas isolator cock, reconnect the product to the power mains and switch the product on. Installation and maintenance instructions ecoTEC exclusive 0020189875_01... -
Page 45: H Technical Data
G31 Min. flue gas mass rate 1.62 g/s (G20) Min. flue gas mass rate 1.64 g/s (G25) Min. flue gas mass rate 3.62 g/s (G31) Max. flue gas mass rate 14.68 g/s 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 46 … 24.6 kW Maximum heat output for 35.3 kW hot water generation Maximum heat input for 32.7 kW hot water generation Maximum heat input, 24.8 kW heating side Minimum heat input 8.0 kW Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 47 41 W sumption Max. electrical power 79 W consumption for heat- ing mode (nominal heat loading) Max. electrical power 89 W consumption for cylinder charging Electrical power con- < 1.9 W sumption, standby 0020189875_01 ecoTEC exclusive Installation and maintenance instructions...
- Page 48 Appendix VCW 266/5‑7 (N-DE) ecoTEC exclusive Level of protection IP X4 D Test symbol/registration CE‑ 0085CM0321 Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
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Page 49: Index
Leak-tightness ............20, 26, 29 Disposal, packaging ............29 Liquefied petroleum gas ............10 Disposing of the packaging ..........29 Liquid gas ................ 4, 10 Documents ................6 Liquid gas, setting ............... 16 0020189875_01 ecoTEC exclusive Installation and maintenance instructions... - Page 50 Setting, maintenance interval ..........21 Side section, installing............9 Side section, removing ............9 Spare parts................23 Starting, installation assistants ..........16 Status codes..............15, 38 Swiss Ordinance on Air Pollution Control (Luftreinhalte- Verordnung) ................ 20 Installation and maintenance instructions ecoTEC exclusive 0020189875_01...
- Page 52 0020189875_01 0020189875_01 11.09.2017 Supplier Vaillant Deutschland GmbH & Co.KG Berghauser Str. 40 D-42859 Remscheid Telefon 021 91 18‑0 Telefax 021 91 18‑2810 Auftragsannahme Vaillant Kundendienst 021 91 5767901 info@vaillant.de www.vaillant.de © These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with the manufacturer's written consent.
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