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Description of devices and functions

Operating instructions ecoTEC plus 0020116701_00 

9

3

3.2.4  Hot water production with VUI boiler

The hot water production with additional stratified cylinder 
functions in the same way as on the VUW boiler (

¬ Sec-

tion 3.2.3

).

In addition, you can activate the heating of the stratified 
cylinder by switching on Comfort mode. This uses special 
charging technology to ensure that you have a similar hot 
water convenience as you would get with a much bigger 
conventional domestic hot water cylinder. You immediately 
get hot water at the required temperature without having 
to wait for the water to heat up and you have a larger hot 
water volume at your disposal.

Summary of Contents for ecoTEC plus SERIES

Page 1: ...Operating instructions For the operator GB IE Operating instructions ecoTEC plus Gas fired wall hung high efficiency boiler...

Page 2: ...g the hot water temperature 16 5 3 2 Activating deactivating Comfort mode 16 5 3 3 Setting the cylinder charging mode VUI 937 only 16 5 4 Hot water production with VU boilers 17 5 5 Setting a room the...

Page 3: ...Symbols used The symbols used in the text are explained below Symbols for identifying dangers are also used in these operating instructions Section 2 1 1 i Symbol that denotes useful tips and infor ma...

Page 4: ...llant Ltd supports the Benchmark Initiative A benchmark check list for commissioning gas fired boilers is attached to these installation instructions It is very important that this docu ment be filled...

Page 5: ...f improper use or use for which it is not intended This boiler is not intended for use by persons including children having limited physical sensory or mental capaci ties or who have inadequate experi...

Page 6: ...ventilation Switch the boiler OFF Inform a heating specialist company Explosives and highly flammable substances The risk of explosion arises from the flammable mixture of gas and air Take note of th...

Page 7: ...o the entire flue system to the entire condensate drain system to the expansion relief valve or the drain line and to constructional conditions that could affect the operational reliability of the boi...

Page 8: ...ir cuit exits the boiler at a specific heating flow temperature emits its heat into the rooms and flows back into the boiler once cooled to return temperature The heating water is then heated again 3...

Page 9: ...c tion 3 2 3 In addition you can activate the heating of the stratified cylinder by switching on Comfort mode This uses special charging technology to ensure that you have a similar hot water convenie...

Page 10: ...ss a button for the DIA system when it is switched on At first pressing this button does not trig ger any other function The light automatically switches off after one minute if you do not press any b...

Page 11: ...s switched off Boiler anti cycling time is active This function is used to prevent frequent on off operations and therefore contributes to prolonging the life of your boiler The symbol also appears if...

Page 12: ...vated function is displayed in the display If the dis play becomes dark the light is first switched on by the first press of the button In this case to trigger the button func tion you must press the...

Page 13: ...ck this open a hot water tap at a draw off point and check that water flows out Closing isolator devices The isolator devices are closed if the slot for the screw driver is at a right angle to the pip...

Page 14: ...fault mes sage F 22 and the current filling pressure The heating system must be topped up with water before the boiler can be put into operation again As soon as the system has been topped up with su...

Page 15: ...nge by pressing the right hand selection button OK The heating flow temperature is factory set for tempera tures up to 75 C If higher or lower values can be set on your boiler this means that your app...

Page 16: ...election button Comfort mode on or Comfort mode off flashes in the display Use the minus button or the plus button to activate or deactivate the comfort mode Confirm the change by pressing the right h...

Page 17: ...ter tem perature setting Section 5 3 1 5 4 Hot water production with VU boilers a Danger Risk of being scalded by hot water There is a danger of scalding at the hot water draw off points if the temper...

Page 18: ...cylinder charging Press the left hand selection button The hot water temperature that is set is shown flashing on the display Use the minus button to set the hot water temperature to Cylinder chargin...

Page 19: ...t only if there is no risk of frost 5 8 Protecting the heating system against frost 5 8 1 Activating the frost protection function Your Vaillant ecoTEC plus boiler is fitted with a frost protec tion f...

Page 20: ...eated and unheated rooms or rooms that are heated to a limited degree are left open Thermostatic radiator valves and weather compen sators or room thermostats Thermostatic valves on all radiators main...

Page 21: ...to 4000 litres of water each year Run circulation pumps only if needed VU only Circulation pumps increase convenience when it comes to hot water production But they also need power And circu lating ho...

Page 22: ...060 777 to complete such work 7 1 Reading fault messages F 75 Fault Pump water shortage 7 1 Fault display Fault messages have priority over all other displays If a fault develops in the boiler the dis...

Page 23: ...ating system too low Top up the heating system with water Section 5 1 4 Air in the heating system Purge the radiators If the problem occurs again Contact your heating engineer Ignition malfunction Pre...

Page 24: ...nite after five attempts the boiler will not operate and switches to Fault This is indicated by the fault code F 28 or F 29 1 and a corresponding plain text display on the display e g for F 28 Failure...

Page 25: ...s two selection levels sublevels Through the selection levels you navigate to the display and setting levels in which you can read or change settings The selection levels have four display fields Menu...

Page 26: ...nitor Information Back Select Menu Water pressure Live Monitor Information Back Select Menu Live Monitor Reset burner off time Information Back Select Information Contact data Serial number Back Selec...

Page 27: ...demand summer operating mode S 34 Heating mode frost protection S 40 Comfort safety mode active 8 1 Possible appliance statuses selection 8 3 Setting the display contrast Back Display contrast 20 8 4...

Page 28: ...ne number during the installation you can read this data under Contact data 8 6 Displaying the serial number and article number Menu Information Serial number Serial number shows the serial number of...

Page 29: ...iness and safety reliability and a long working life require inspections and maintenance work to be carried out annually on the boiler by your approved competent person Regular servicing ensures maxim...

Page 30: ...Disposing of the boiler Do not dispose of your Vaillant ecoTEC plus boiler or any of its accessories in the household waste Make sure the old unit and any accessories are disposed of properly Observe...

Page 31: ...e is not included in the guar antee Registering with us Registration is simple Just complete the Guarantee Regis tration Card and return to Vaillant within 30 days of instal lation Your details will t...

Page 32: ...this hot water as it leaves the boiler is referred to as the heating flow tempera ture Hot water production in VU boilers Your boiler heats the water in the domestic hot water cylin der to the select...

Page 33: ...rost Activating the frost protection function 19 Draining the heating system 19 Protecting the heating system against frost 19 H Heating flow temperature 15 Hot water production 5 8 14 18 32 Hot water...

Page 34: ...ting instructions ecoTEC plus 0020116701_00 T Temperature Setting the hot water temperature 15 17 Setting the hot water temperature VUW unit 16 Troubleshooting 22 V Vaillant customer service 31 W Wate...

Page 35: ...n 5 2 1 50 50 Target flow temp Back 48 Target flow temp Cancel Ok Right hand selection but ton button for selecting the temperature Confirm OK 3 Setting the hot water temperature Section 5 3 1 50 45 D...

Page 36: ...0020116701_00 GBIE 102011 Subject to change Manufacturer Supplier...

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