Installation and maintenance instructions For the competent person Installation and maintenance instructions ecoTEC plus VU 80, 100, 120 kW GB, IE
Table of contents Table of contents 1 1.1 1.2 1.3 1.4 1.5 Notes on the documentation ..................................... 3 Storing documents .......................................................... 3 Applicability of the instructions ................................... 3 Identification plate........................................................... 3 CE label............................................................................... 3 Type overview ................................................
Notes on the documentation 1 Notes on the documentation 1.4 The following information is intended to help you throughout the entire documentation. Other documents apply in addition to these Installation instructions. We accept no liability for any damage caused by failure to observe these instructions. Other applicable documents > During installation, you must observe all the installation instructions for the assemblies and components of the system.
1 1.5 Notes on the documentation Type overview Unit type ecoTEC plus Designated country (designation in accordance with ISO 3166) 806 (VU GB 806/5-5) Approval category Gas group Nominal heat output range [kW] GB (Great Britain) IE (Ireland) II2H3P Natural gas H - G20 - 2 kPa (20 mbar) Propane - G31 - 3.7 kPa (37 mbar) Propane - G31 - 5 kPa (50 mbar) 16 - 80 1006 (VU GB 1006/5-5) GB (Great Britain) IE (Ireland) II2H3P Natural gas H - G20 - 2 kPa (20 mbar) Propane - G31 - 3.
a Safety 2 2 Safety 2.1 2.2 Safety and warning information > When installing the ecoTEC plus, you must observe all the general safety information and the warning notes that appear before all of the actions. 2.1.
a a 2 Safety 2.3 Basic safety information > Notify the gas supply company or National Grid Transco 0800 111999 by telephone from outside the building! > Observe the following safety information at all times.
a Safety 2 Using the correct gas type Using the wrong gas type may cause a fault shutdown on the boiler. Furthermore, ignition and combustion noise may occur in the boiler. > Observe the gas setting values in accordance with ¬ section 1.5. Risk of death due to lack of safety devices A lack of safety devices (e.g. expansion relief valve, expansion vessel) can lead to potentially fatal scalding and other injuries, e.g. due to explosions.
a a 2 Safety 2.4.2 Installation site 2.4.3 Gas supply The installation site of the boiler should allow proper connection of the flue pipe to the boiler. In addition, there should be adequate room for maintenance work and air circulation around the boiler. The boiler must be set up in a separate installation room. In case of installation of the boiler in an unusual location, special procedures may be necessary and BS 5546 and BS 6798 give detailed instructions on this aspect.
a Safety 2 b Caution. Risk of material damage if the heating water is treated with unsuitable frost or corrosion protection agents! Frost and corrosion protection agents may cause changes in the seals, noises during heating and may lead to further damage. > Do not use any unsuitable frost or corrosion protection agents.
a 2 Safety 3,6 3,3 3 80 kW 2,7 100/120 kW 2,4 y [mol/m3] a 2,1 A 1,8 1,5 80 kW: A 1,2 0,9 100/120 kW: B B 0,6 0,3 0,0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 x [l] 2.1 Water preparation depending on water hardness and system volume Key: x System volume [l] y Water hardness [mol/m3] (1 mol/m3 corresponds to 100 mg/l CaCO3) A Water treatment required B Water treatment not required 2.4.
Unit and functional description 3 3 Unit and functional description 1 Construction and function 15 14 2 13 3 1 15 14 2 12 4 5 11 13 3 12 4 5 10 11 6 7 9 6 10 7 8 9 8 3.
4 Installation 4 Installation 4.1 Scope of delivery The Vaillant ecoTEC plus is delivered pre-assembled in a packaging unit. 4.2 Transporting the unit Important: In regard to the regulations of 1992 concerning the manual handling of loads, the unit exceeds the weight which can be lifted by a single person. General handling recommendations 4.1.1 > > > > Unpacking the boiler Open the box by pulling on the tear-off strings. Remove the boiler from its box.
Installation 4 Transporting the box from the delivery point to the installation site – first or higher floor, cellar It is recommended that two people lift the unit together. > Use safe lifting techniques – keep your back straight – and bend your legs at the knee. > Hold the load as close as possible to your body. > If the unit is being lifted by 2 persons, ensure your movements are coordinated during lifting. > Avoid bending your upper body - do not lean forwards or to the side.
4 Installation Positioning the unit for final installation – restricted installation Positioning the unit for final installation – with restricted installation position under the roof. > If the unit weighs more than 25 kg, it should always be transported by two persons, where possible. > Fix the unit bracket securely to the wall before lifting the unit and placing it in position. > If required, provide the work surface with sufficient protection against damage.
Installation 4 Dimension drawing and connection dimensions G 1 1/4 4.3 4 482 49 Ø25 7 Key 1 Wall breakthrough for flue pipe 2 Flue pipe connection 3 Hanging bracket 4 Heating flow 5 Condensate siphon connection 6 Gas connection 7 Heating return 6 5 1 4.4 Requirements for the installation site 4.4.1 Required minimum clearances/installation clearances 477 70 A 190 2 138 287 3 C 673 680,5 B 960 C 4.
4 Installation 4.5 Wall-mounting the boiler a 4.6 Danger! Risk of death if the load-bearing capacity of the fixing elements used is insufficient! If the fixing elements or wall do not have sufficient load-bearing capacity, the boiler can come loose and fall down. This may also cause leaks in the gas line, which is potentially fatal. > When installing the boiler, make sure that the fixing elements have a sufficient load-bearing capacity. > Check if the supplied fixing kit may be used for the wall.
Gas installation 5 5 Gas installation The work described in this section must only be carried out by a competent person. 5.1 b Preparing for installation a Danger! Risk of death caused by improper gas installation! An incorrect gas installation may result in leaks and an explosion. > During installation, the legal directives and the local regulations for gas supply companies must be observed.
6 Hydraulic installation 6 Hydraulic installation The work described in this section must only be carried out by a competent person. 6.1 b Caution. Risk of damage caused by incorrect installation. Stresses in the supply line may cause leaks. > Make sure there is no voltage in the supply lines when they are installed. b Caution. Risk of damage caused by heat transfer when soldering. Heat that is transferred during soldering may cause damage to the seals in the service valves.
Hydraulic installation 6 6.2 Connecting the heating flow and heating return b Caution. Risk of material damage caused by incorrect installation. Stresses in the supply line may cause leaks. > Make sure there is no voltage in the supply lines when they are installed. b Caution. Risk of damage to the service valves. > Do not solder the connection pieces if the connection pieces are screwed to the service valves.
6 Hydraulic installation Power Max. pressure loss (mbar) < 120 kW 86 in conjunction with the hydraulic cascade < 240 kW 96 < 360 kW 76 < 480 kW 82 < 600 kW 87 < 720 kW 92 6.2 System separation pressure loss 6.3 min. 180 Connecting the condensate drain pipework 1 2 a a Danger! Risk of death from escaping flue gases! An empty or insufficiently filled condensate siphon may allow flue gases to escape into the room air.
Hydraulic installation 6 6.4 Connecting the discharge pipe to the expansion relief valve on the heating installation The expansion relief valve for the heating installation can be connected to the pump group (left-hand side) > Install the drain line for the expansion relief valve so that it is not damaged when removing and fitting the lower part of the condensate siphon. i We do not recommend shortening the discharge pipe that is supplied.
7 Flue gas installation 7 Flue gas installation 7.2 Installing the flue pipe > Install the flue pipe using the enclosed installation instructions. 7.1 Preparing for installation a Danger! Risk of personal injury and material damage due to unapproved flue pipes. Vaillant boilers are certified only with genuine Vaillant flue pipes. The use of other accessories may cause personal injury and material damage as well as operating faults. > Only use genuine Vaillant flue pipes.
Flue gas installation 7 P B Q Q B A C D,E B C 2m H E A S M H H N 7.2 Opening of the flue pipe Installation site Minimum dimensions Horizontal flue gas pipes A B(5) C D E(4) F G(4) H H(2) J J(2) L M N Directly below an opening, air bricks, opening windows, etc. Above an opening, air bricks, opening windows, etc. Horizontally to an opening, air bricks, opening windows, etc. Below temperature-sensitive building components e.g.
8 Electrical installation 8 Electrical installation The work described in this section must only be carried out by a competent person. 8.1 8.2 Opening/closing the electronics box > Remove the front casing of the boiler (¬ section. 4.6). Preparing for installation 2 e e 24 Danger! Risk of death from electric shock! Touching live connections may cause serious personal injury. > Switch off the power supply.
Electrical installation 8 b b Caution. Risk of damage caused by incorrect installation. Mains voltage at the incorrect plug terminals on the ProE system may destroy the electronics. > Only connect the mains connection cable to the terminals marked for the purpose. > Use a flexible connection cable. Caution. Risk of damage caused by incorrect installation. Connecting wires that have been stripped too far may cause short circuits and damage the electronics if a strand accidentally comes loose.
8 Electrical installation X22 X18 230 V 8.4.2 Connecting controllers to the electronic system b Caution. Risk of damage caused by incorrect installation. Connecting wires that have been stripped too far may cause short circuits and damage the electronics if a strand accidentally comes loose. > Only strip the lines a maximum of 3 cm to prevent short circuits. > Lay the lines correctly. > Use strain reliefs. b Caution. Risk of material damage caused by incorrect installation.
Electrical installation 8 > In order to achieve pump operating mode 1 "Comfort" (continuously running pump) for multi-circuit controllers, set the diagnostics code D.018 Pump operating mode from 3 = "Eco" (intermittent pump) to 1 = "Comfort" (¬ section 12.1.2). > If the system partition is installed, set the pump to Comfort (D.018) and set the pump output to at least 4 (85 %, D.014). The same setting applies for installing units in cascade. i 8.
8 Electrical installation Connection wiring diagram Display connection Pump PWM signal blue Gas valve Water pressure sensor Cylinder sensor (optional) white white Cylinder contact “C1-C2“ Flow sensor blue Flow sensor pink red Water DD Safety cut-out Remote control circulation pump External sensor Flow sensor (optional) DCF connection Earth Earth Contact thermostat/burner off Accessory output (Select via D.26) PWM Earth Bus connection (Controller(room th. digital) grey pink Ext.
Establishing operational readiness 9 9 Establishing operational readiness The Vaillant ecoTEC plus boiler is fitted with a digital information and analysis system (DIA). If additional settings are required, which have not been configured using the installation assistant, you can view and modify further parameters using the DIA. The operating concept and operation of the boiler are described in the ¬ Operating instructions of the boiler.
9 Establishing operational readiness > Check that both service valves on the boiler are open. > Slowly open the stop valve on the filling line so that the water flows into the heating system. 9.3.3 Flush the heating installation for the first time ("cold") i i If the water pressure in the heating system is too low, the display view switches between fault message F.22 and the display of the actual pressure when the boiler is switched on.
Establishing operational readiness 9 9.5 Filling the condensate siphon a Danger! Risk of poisoning due to escaping flue gas. An empty or insufficiently filled condensate siphon may allow flue gas to escape into the room air. > Fill the condensate siphon with water before starting up the boiler. 9.6 Checking the gas ratio setting 9.6.1 Default setting b Caution.
9 Establishing operational readiness 1 806/5-5 1 9.3 Flue gas and air analysis points Key: 1 Flue gas analysis point 2 Air analysis point > Use the air analysis point (2) to check for flue gas recirculation. > Use the flue gas measuring instrument. > If you discover CO or CO2 in the fresh air, search for a leak in the flue gas system or for flue gas recirculation. > Eliminate the damage. > Repeat the above-mentioned test to determine if the fresh air contains CO or CO2.
Operation 10 b Caution. Possible material damage and operating faults caused by incorrect connection pressure. If the gas connection pressure lies outside the permissible range, this can cause operating faults on the boiler. > Do not make any settings on the boiler. > Do not operate the boiler. > Check the pressure control system at the entrance to the property. > Advise the responsible gas supply company.
10 Operation 10.2 Overview of the menu structure Menu Information Reset burner off time Installer level Back Select Installer level Fault list Test programs Appliance config. Enter code 17 Back OK Back Select Installer level Fault list Test programs Appliance config. Back Select F.00 F.
Operation 10 Appliance config. Target flow temp. DHW temperature Comfort mode Back Select Appliance config. DHW temperature Comfort mode Auxiliary relay Back Select Appliance config. Comfort mode Auxiliary relay Accessory relay 1 Back Select Appliance config. Auxiliary relay Accessory relay 1 Accessory relay 2 Back Select Appliance config. Accessory relay 1 Accessory relay 2 Heating partial load Back Select Appliance config.
11 Start-up 11 Start-up a i i Danger! Risk of poisoning and scalding caused by escaping hot flue gases. Hot flue gas may escape and cause poisoning and scalding, if the boiler is operated with an incompletely fitted or open flue pipe or if the boiler is operated with the front casing open in the event of internal leaks. > Operate the boiler - for start-up - for testing - in continuous mode only when the front casing is closed and the flue pipe is fully installed and closed.
Start-up 11 11.2.4 Heating partial load 11.4 The heating partial load of the Vaillant ecoTEC plus boiler is factory set to "auto". This means that the boiler independently determines the optimum heating output depending on the current heat demand of the system. A setting is normally no longer required. The setting can also be changed at a later point using diagnostics code D.000. In addition to the installation assistant, you can also call up other test programmes for start-up.
11 Start-up 11.5 Checking the function of the boiler > After completing the installation and the gas ratio setting, perform a complete function check of the boiler before starting up the boiler and handing it over to the operator. > Document the setting values and that all checks have been performed in the commissioning checklist. 11.5.1 Carrying out a full function test > Start up the boiler in accordance with the relevant operating instructions and commissioning checklist.
Adapting the unit to the heating installation 12 12 Adapting the unit to the heating installation The installation assistant is started when the boiler is switched on for the first time (¬ section 11.2). If you have already filled the heating installation and terminated the installation assistant, but wish to set the most important system parameters again, you can also call up the "Appliance configuration" menu point.
12 Adapting the unit to the heating installation Code Parameters Adjustable values D.000 Heating partial load Factory setting Adjustable heating partial load in kW auto: Unit automatically adjusts max. partial load to current system demand) D.001 Overrun time of internal heating pump for 2–60 min heating mode D.002 Max. burner anti-cycling time heating at 2–60 min 20 °C flow temperature D.017 Heating flow/return regulation changeover 0 = Flow, 1 = Return 0 D.
Adapting the unit to the heating installation 12 12.1.1 Setting the heating partial load The heating partial load of the Vaillant ecoTEC plus boiler is factory set to "auto". This means that the unit independently determines the optimum heating output depending on the current heat demand of the system. A setting is normally no longer required. If you still want to set a fixed maximum heating partial load, you can set a value under diagnostics code D.000, which equates to the unit output in kW.
12 Adapting the unit to the heating installation TFlow (target) Set maximum burner anti-cycling time [min] [°C] 1 5 10 15 20 25 30 35 40 45 50 55 60 20 2.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 25 2.0 4.5 9.2 14.0 18.5 23.0 27.5 32.0 36.5 41.0 45.0 50.0 54.5 30 2.0 4.0 8.5 12.5 16.5 20.5 25.0 29.0 33.0 37.0 41.0 45.0 49.5 35 2.0 4.0 7.5 11.0 15.0 18.5 22.0 25.5 29.5 33.0 36.5 40.5 44.0 40 2.0 3.5 6.5 10.0 13.0 16.
Adapting the unit to the heating installation 12 12.2 Handing the boiler over to the operator a > Explain to the operator how to correctly set the temperatures, the controllers and the thermostatic radiator valves (economically).
13 Inspection and maintenance 13 13.1 Inspection and maintenance Inspection and maintenance intervals a a Danger! Negligent inspection and maintenance results in a risk of injury as well as a risk of material damage! Negligence in inspection and maintenance work as well as failure to comply with the specified inspection and maintenance intervals can impair the operating safety of the boiler and lead to injuries and material damage.
Inspection and maintenance 13 13.1.1 General inspection and maintenance instructions i For certain inspection and maintenance work, the electrics of the boiler must remain activated; this is specified in the description of the respective maintenance task. Procuring spare parts > If you require spare parts for servicing or repair work, use only Vaillant genuine spare parts. The original components of the unit were also certified as part of the CE declaration of conformity.
13 Inspection and maintenance > If all these points meet the requirements, continue in accordance with ¬ section 13.2. > If one of the flue gas values is above the permissible value in ¬ table 13.1, continue in accordance with the following ¬ section 13.1.4. 13.1.3 Checking the CO2 content The CO2 content must be checked/set in the following cases: – When replacing the gas valve – If you suspect incorrect combustion.
Inspection and maintenance 13 If the flue gas value has to be set, proceed as follows. The adjusting screw (1) for the air index setting is located under a sealing sticker. > Break through the sealing sticker. > Set the CO2 content (value with front casing removed) by turning the screw (1). i Turn to the left: Increases the CO2 content Turn to the right: Decreases the CO2 content > Only perform the adjustment in 1/8 turns and wait approximately 1 minute after each adjustment until the value stabilises.
13 Inspection and maintenance 13.2 Inspection and maintenance work The following table shows the inspection and maintenance work that must be carried out at specific intervals. Inspection Service (must be (regularly, at performed least every every year) 2 years) No. Work 1 2 3 4 5 6 7 8 Isolate the boiler from the power mains. Check that the plug connections and other connections are seated correctly and correct these if necessary. Close the gas isolator cock and the service valves.
Inspection and maintenance 13 13.2.1 Filling the boiler and the heating installation Display T.01 A description of how to fill the boiler and heating installation is given in section 9.3.1. Switch the boiler off with the on/off button. Close the service valves of the boiler. Start the check programme P.6. Open the drain valves on the service valves. You can switch the internal pump on and off. Check fan T.04 Check cylinder charge pump You can switch the fan on and off.
13 Inspection and maintenance 13.3.2 Carrying out electronics self-tests Menu ¬ Installer level ¬ Test programmes ¬ Electronics self-test With the electronics self-test, you can test the relays on the PCB. 13.4 > > > > > > > > Switch the boiler off with the on/off button. Isolate the boiler from the power mains. Close the gas isolator cock on the boiler. Close the service valves on the boiler. Remove the front casing from the boiler (¬ section 4.6). Undo the upper screws in the side panels.
Inspection and maintenance 13 13 12 11 3 5 10 6 9 4 7 8 806/5-5 13.6 Separate the gas pipework (VU GB 1006/5 - 5 and VU GB 1206/5 - 5) > Undo the four screws on the flange connection (3) to the gas valve. > Move the gas pipe (4) to the side. 13 12 a Danger! Risk of poisoning and fire caused by escaping gas! The gas pipe can be damaged. > Ensure that you do not damage the seals on the gas pipe when removing and installing the gas-air mixture unit. 10 8 11 5 6 7 9 1006/5-5 1206/5-5 13.
13 Inspection and maintenance > Remove the plug from the upper safety cut-out (8). > Undo the screws (6) on the burner door. > Remove the complete gas-air mixture unit (5) from the heat exchanger (7). > Check the burner and the heat exchanger for damage and dirt. If you have removed the condensate siphon, reinstall it below the boiler after cleaning (¬ section 13.5.5) so that the heat exchanger is ready for operation again. 13.5.3 Checking the burner 13.5.2 Cleaning the heat exchanger 1 b Caution.
Inspection and maintenance 13 1 1 13.10 Replacing electrodes 2 > Remove the electrodes (1) from the burner plate from above. > Insert the new electrodes with new seals. Tightening torque: 2.8 Nm b Caution. Risk of material damage caused by damage to the ignition and ionisation electrodes. The electrodes could become damaged during installation. > Fit the new electrodes only after first installing the gas-air mixture unit. 13.
13 Inspection and maintenance 13 12 11 4 10 > Connect the plug (10) to the gas valve. > Connect the gas pipe (4) with a new seal to the gas valve. Torque (for the VU GB 806/5-5 only): 2 Nm Torque (for the VU GB 1006/5-5 and VU GB 1206/5-5 only): 2.8 Nm > Open the gas isolator cock on the boiler. 5 a 6 9 7 Danger! Risk of poisoning and fire caused by escaping gas! Gas can escape through leaks. > Check the gas tightness at the gas connection using leak detection spray.
Troubleshooting 14 13.5.9 Checking the boiler 14 Troubleshooting > Commission the boiler in accordance with the relevant operating instructions. 14.1 Contacting Vaillant customer service > If you contact your Vaillant Customer Service or Vaillant Service partner, then please provide, where possible, – the fault code that is displayed (F.xx), – the unit status (S xx) that is displayed in the "Live monitor" (¬ section 14.2.1). 14.
14 Troubleshooting 14.2.2 Overview of status codes 14.2.3 Service messages Display Meaning If the "open-end spanner" maintenance symbol appears in the display, there is a service message. The maintenance symbol appears if you have set a maintenance interval, for example, (¬ section 12.1.6) and it has elapsed. The boiler is not in fault mode but continues to operate.
Troubleshooting 14 14.2.4 Calling up diagnostics levels Menu ¬ Installer level ¬ Diagnostics menu You can use the diagnostics menu to inspect parameters and modify certain parameters. An overview of all diagnostics codes can be found in ¬ table 12.1. 14.2.5 Overview of diagnostics codes at installer level Display Meaning Display value/adjustable value D.000 Heating partial load Adjustable heating partial load in kW (Factory setting: auto: Unit automatically adjusts max.
14 Troubleshooting Display Meaning Display value/adjustable value D.033 D.034 D.039 D.040 D.041 D.044 Fan speed target value Fan speed actual value Solar feed temperature Flow temperature Return temperature digitalised ionisation voltage D.046 Pump type D.047 D.
Troubleshooting 14 14.2.6 Reading fault codes If a fault develops in the boiler, the display shows a fault code F.xx. A plain text display explains the displayed fault code. Example F.10: "Short circuit in flow sensor". Fault codes have priority over all other displays. If a fault occurs, the display no longer shows the current heating flow temperature of the heating installation. If multiple faults occur at the same time, the display shows the corresponding fault codes for two seconds each in sequence.
14 Troubleshooting 14.2.9 Overview of fault codes Code Meaning Cause F.00 Flow temperature sensor interruption NTC plug not plugged in or has come loose, multiple plug on the PCB not plugged in correctly, interruption in cable harness, NTC defective F.01 Return temperature sensor interruption NTC plug not plugged in or has come loose, multiple plug on the PCB not plugged in correctly, interruption in cable harness, NTC defective F.
Troubleshooting 14 Code Meaning Cause F.73 Water pressure sensor signal in the wrong range (too low) F.74 Water pressure sensor signal outside correct range (too high) Interruption/short circuit of water pressure sensor, interruption/short circuit to GND in supply line to water pressure sensor or water pressure sensor defective Line to water pressure sensor has short-circuited at 5 V/24 V or internal fault in water pressure sensor F.75 Fault, no pressure change detection when starting pump F.
15 Replacing components 15 Replacing components 15.2 Removing/fitting the side section (if required) The work described in this section must only be carried out by a competent person. > Only use genuine Vaillant spare parts for repairs. You can find information about available Vaillant genuine spare parts from the contact address provided on the reverse of this document. 15.
Replacing components 15 > Slide the side section to the rear. > Secure the side section using two screws in the front lower area and in the upper central area. > Fit the upper casing (¬ section 13.4). > Fold up the electronics box. 15.3 > Fit the new gas valve in the same position on the fan as before. Use new seals for this. > Tighten the screws (1) in a cross-wise pattern.
15 Replacing components > On the VU GB 806/5-5 only: Use the three nuts to secure the burner and the bracket for the insulation protection plate. Tightening torque: 4 Nm > On the VU GB 1006/5-5 and VU GB 1206/5-5 only: First, use two nuts to secure the burner. Tightening torque: 4 Nm > On the VU GB 1006/5-5 and VU GB 1206/5-5 only: Use the four remaining nuts to secure the burner and the bracket for the insulation protection plate.
Replacing components 15 15.8.1 Replacing either the display or the PCB > Replace the PCB or display according to the assembly and installation instructions supplied. 1 If you are replacing only one component, the set parameters are transferred automatically. By switching on the boiler, the new component takes over the previously set parameters from the unreplaced component. 15.8.2 Replacing the PCB and the display at the same time 15.
16 Decommissioning 16 Decommissioning 16.1 16.3 Temporarily shutting down the boiler b Caution. Risk of frost damage due to incorrect decommissioning. If you switch off the boiler using the on/off switch or disconnect it from the power mains, this can cause frost damage to the heating installation. > Only shut down the boiler fully if the heating installation is otherwise protected from frost. > Drain the heating installation fully.
Technical data 18 18 Technical data ecoTEC plus Nominal heat output range P at 80/60 °C Nominal heat output range P at 60/40 °C Nominal heat output range P at 50/30 °C Nominal rated efficiency (stationary) at 80/60 °C Nominal rated efficiency (stationary) at 60/40 °C Nominal rated efficiency (stationary) at 50/30 °C Standard degree of utilisation at 75/60 °C in accordance with DIN 4702-8 Standard degree of utilisation at 40/30 °C in accordance with DIN 4702-8 Maximum heat input during heating mode 1) Max
19 Glossary 19 Glossary Burner anti-cycling time The burner is electronically locked for a specific time after each time it is switched off ("restart interlock") to avoid frequent switching on and off of the burner (energy losses) and to extend the working life of the boiler. The burner anticycling time is only activated for the heating mode. Hot water handling is not affected if burner anti-cycling time is running.
Appendix 20 20 Appendix Commissioning checklist ecoTEC plus installation and maintenance instructions 0020134823_01 69
Index Index A E Accessories............................................................................. 27, 42 Adjusting the air ratio ............................................................... 46 Auxiliary relay............................................................................... 37 Expansion relief valve................................................................. 10 F B Burner...............................................................
Index M T Mains connection ........................................................................ 24 Multi-functional module ............................................................. 37 Technical data.............................................................................. 67 Troubleshooting .......................................................................... 55 Type of gas ..................................................................................... 4 Type overview ............
Manufacturer 0020134823_01 GBIE 122012 – Subject to change Supplier
