Vaillant ecoTEC SERIES Operating Manual

Operating manual ecoTEC Gas wall boilers with condensing appliance technology VU 466/4 VU 656/4 GB ...

2 Appliance characteristics Vaillant ecoTEC units are compact wall-mounted gas condensing boilers. Recommended accessories Vaillant provides, for control of the ecoTEC, various controller versions for connection to the terminal rail or for plugging into the operating plate. Controller auroMATIC 560 timeSWITCH 130 timeSWITCH 140 VR 60 Mixing Module VR 61 Mixing Module VR 65 VR 68 Solar Module VR 80 Remote Control VR 81 Remote Control VR 90/2 Remote Control VRC 400 VRC 430 VRC 430f VRC 630/2 vrnetDIALOG 830 vrnetDIALOG 840/2 vrnetDIALOG 860/2 VRT 230 VRT 340f VRT 360 VRT 360f VRT 392 VRT 392f VRT 30 VRT 50 Table 0.1 ...

Notes on the documentation 1 1 Notes on the documentation The following information is intended to help you throughout the entire documentation. Further documents apply in combination with this oper- ating manual. We accept no liability for any damage caused by non- observe these instructions. Other applicable documents For the owner of the system: Short operator's manual No. 0020040000 For the heating engineer: Installation and maintenance instructions No. 0020029172 or No. 0020029173 Installation manual for flue pipe No. 0020046373 The manuals for any accessories and controllers used also apply. The Benchmark g ...

4 2 Safety 2.1 Erection and adjustment Installation and adjustment of the boiler and service, maintenance and repair work may only be carried out by expert technicians in accordance with regulations in- troduced in 1998 governing the safety of gas installa- tions (installation and use). (In Great Britain "CORGI". This means that the work carried out by registered in- stallation companies must always be to a safe and satis- factory standard.) If the boiler is mounted in a cabinet- type enclosure the ventilation openings must not be ob- structed and the enclosure must not be used for stor- age purposes. 2.2 Action in ...

a Caution! Inappropriate alterations can cause damage! Under no circumstances should you attempt to make alterations to the gas wall-mounted boiler or other parts of the system. Never try to carry out maintenance work or re- pairs on the appliance yourself. • Do not damage or remove seals on components. Only a suitably qualified heating engineer or our customer service may remove sealed components. H Danger! Risk of scalding! The water coming out of the tap can be very hot. a Caution! Risk of damage! Do not use sprays, solvents, chlorinated clean- ing agents, paint, adhesives or similar sub- stances in the v ...

6 3 Instructions on operation 3.1 Vaillant warranty Vaillant provide a full parts and labour warranty for this appliance. The appliance must be installed by a suitably competent person in accordance with the Gas Safety (Installation and Use) Regulations 1998, and the manufacturer’s in- structions. In the UK ‘CORGI’ registered installers under- take the work in compliance with safe and satisfactory standards. All unvented domestic hot water cylinders must be installed by a competent person to the prevail- ing building regulations at the time of installation. (G3) Terms and conditions apply to the warranty, de ...

3.6 Energy saving tips Installing a weather compensator Weather-compensators regulate the heating feed tem- perature with reference to the outside temperature. No more heat is generated than is currently required. The designated heating flow temperature for the corre- sponding outside temperature must be set on the weather compensator. This setting must not be greater than required by the heating installation design. The correct setting is normally undertaken by the heating engineer. The required heating and set-back phases (e.g. at night) are automatically switched on/off using integrated timer programs. Weather ...

8 These pumps undoubtedly enhance the convenience of the hot water generation process. But they also need power. And circulating hot water that is not used cools off when passing through pipes and then needs to be reheated. Therefore, circulation pumps are to be oper- ated only when hot water is actually needed for the household. Individual timer programs can be defined using switching clocks, which are already installed or can be retrofitted in most circulation pumps. Weather compensators often have ancillary functions for control- ling circulation pump timings. Consult your heating engi- neer. Another option is t ...

10 Rotary knob for specifying the storage tempera- ture (in conjunction with VU units with connect- ed domestic hot water cylinder VIH) Digital Information and Analysis System (DIA) 1 Fig. 4.2 Display ecoTEC A Digital Information and Analysis System is fitted in ecoTEC units. This system provides information on the operating status of your appliance and helps you deal with problems. During normal operation, the display (1) shows the cur- rent heating feed temperature (in this example 45 °C). In the event of a fault, an error code appears instead of the temperature. You can also see the following information fro ...

10 4.2 Measures prior to commissioning 4.2.1 Opening the isolating elements h Note! The isolator devices are not included in the scope of delivery for your unit. They are fitted by your heating engineer on site. He must ex- plain to you the position and handling of these components. 2 3 1 Fig. 4.3 Open isolator devices (maintenance cocks, for example) • Open the gas isolator cock (2) by pressing it in and turning it anticlockwise until it reaches the limit stop. • Check that the supply (3) and return (1) maintenance cocks are open. This is the case when the handles of the maintenance cocks are parallel to the ...

4.3 Start-up 1 2 Fig. 4.5 Switching the appliance on • Use the main switch (1) to switch the appliance on and off: 1: "ON" 0: "OFF" When you switch the unit on the display (2) shows the current heating feed temperature. To customise the settings in the unit, read Chapters 4.4 and 4.5 where the options for the hot water generation and heating mode settings are described. a Caution! Risk of damage! The frost protection and monitoring systems are only active if the main switch of the unit is in the "I" position and the unit is connected to the power mains. To ensure that these protection devices remain active, s ...

12 4.4.2 Deactivating the storage tank mode In VU units connected to domestic hot water cylinders you can deactivate the hot water generation or recharg- ing operation whilst keeping the heating system in operation. • Turn the rotary knob for setting the hot water tem- perature all the way to the left. Only the frost protec- tion function for the cylinder remains active. 4.4.3 Drawing off the hot water 1 4.7 Drawing off hot water Hot water is drawn from the connected cylinder when a hot water tap (1) is opened at a draw-off point (washba- sin, shower, bathtub, etc.) If the storage temperature falls below the set ...

4.5.2 Setting the flow temperature (using a con- troller) 1 Fig. 4.9 Setting the flow temperature using a controller If your boiler has a room thermostat or weather com- pensator, you must make the following settings: • Turn the rotary knob (1) for the heating feed tempera- ture all the way to the right. The flow temperature is automatically adjusted by the controller (for information, see its operating manual). 4.5.3 Switching heating mode off (summer mode) 1 Fig. 4.10 Switching off heating (summer operation) You can switch off the heating in summer without switching off the hot water supply. • Turn the r ...

14 Display Meaning Displays during heating operation S. 0 Heating, no heat demand S. 1 Heating mode, fan start-up S. 2 Heating mode, pump flow S. 3 Heating mode, ignition S. 4 Heating mode, burner on S. 6 Heating mode, fan overrun S. 7 Heating mode, pump overrun S. 8 Heating, remaining cut-off time xx min S.31 no heat demand, summer operating mode S.34 Heating mode, frost protection Displays in storage tank charging S. 20 Hot water requirement S.22 Hot water handling, pump flow S.24 Hot water operation burner on Service message (appears as necessary and replaces the normal status text) S.85 Service message, quantit ...

a Caution! Inappropriate alterations can cause damage! If your gas-fired boiler still does not start after the third attempt to suppress the fault, consult a recognised expert technician company or Vaillant Service Solutions for advice. 4.7.3 Faults in the air/flue gas routing The appliances are fitted with a blower. If the blower does not work properly, the appliance will switch itself off. The and symbols as well as the error message "F.32" appear in the display. a Caution! Inappropriate alterations can cause damage! If this error message appears consult a recog- nised expert technician company for advice. ...

16 4.8 Decommissioning 1 Fig. 4.15 Switching off the appliance • To shut down your gas wall-mounted boiler, turn the main switch (1) to the position "0". a Caution! The frost protection and monitoring systems are only active if the main switch of the unit is in the "I" position and the unit is connected to the power mains. To ensure that these protection devices remain active, switch your gas wall-mounted boiler on and off in nor- mal mode using the controller (see the corresponding operating manual). h Note! For longer periods of shut-down (e.g. holiday periods), the gas stop-cock and the cold water stop-cock ...

4.10 Maintenance and customer service To ensure that the unit is always ready for operation, is operationally safe and reliable and has a long working life, inspection/maintenance must be carried out annu- ally by an expert technician or by Vaillant. Further information can be obtained from Vaillant Serv- ice Solutions . (0870 6060 777). d Danger! Danger of property damage and personal injury from improper handling! Never attempt to perform maintenance or re- pairs on the gas wall-mounted boiler yourself. Assign an approved qualified servicing company with this work. We recommend making a main- tenance agreemen ...