Vaillant ecoTEC plus 937 Service Manual

For the heating engineerInstallation and maintenance instructionsGB; IEecoTEC plus 937VUI

10 Installation and maintenance instructions ecoTEC plus 937 0020031552_062.5 Functional description1234141312678911101617152019185cba21Fig. 2.5 Sequ

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 11The ecoTEC plus 937 is a fully-automatic wall-mounted unit with condensing t

12 Installation and maintenance instructions ecoTEC plus 937 0020031552_06The unit is not intended for use by persons (including children) with reduce

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 13Preliminary remarks for room sealed appliancesThis appliance should only be

14 Installation and maintenance instructions ecoTEC plus 937 0020031552_064 General requirements4.1 Scope of supply and accessories1 110987654321Fig.

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 15It is possible to mount onto a wall made of flammable material if the regula

16 Installation and maintenance instructions ecoTEC plus 937 0020031552_06841456542901Fig. 4.3 Item No. 0020060570, 0020060571 and 0020065937 (60/10

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 17Location of the junction mmA Directly under or above an opening or the horiz

18 Installation and maintenance instructions ecoTEC plus 937 0020031552_064.8 System requirements4.8.1 Water circulation systemDetailed recommendation

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 19Jenaqua 110Sentinel X 100Sentinel X 200Additives for frost protection intend

Contents2 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Contents1 Notes on the documentation ...

20 Installation and maintenance instructions ecoTEC plus 937 0020031552_064.8.5 Heating circuit expansion vesselThe boiler of the ecoTEC series are e

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 215 Sequence of operations during installation5.1 Transporting the applianceI

22 Installation and maintenance instructions ecoTEC plus 937 0020031552_06packing and remove carton by sliding up over the boiler.Ensure safe lifting

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 235.2 Required minimum gaps/assembly clearances minmin 5min 5min 500 min 180

24 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.4 Using the installation template0020039975_00 10 200618060/100140195

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 255.7 Fitting the appliance hanging bracket132Fig. 5.3 Shift load storage t

26 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.9 Removing the front case12Fig. 5.5 Removing/fixing the front caseProcee

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 2721362451Fig. 5.6 Gas connectionProceed as follows for gas connection:Remove

28 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Push the union nut (4) with the inserted olive (3) onto the copper tail (5)

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 295.14 Connecting the heating supply and return linesa Danger!Risk of scaldin

Contents3Installation and maintenance instructions ecoTEC plus 937 0020031552_066.5 Flushing the system for the first time ("cold") ..416.6

30 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.15 Installing the condensate drain linea Danger!Risk of poisoning due to

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 31min.180Fig. 5.12 Installation space condensate siphonThere must be a minimum

32 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.19 Electrical connection5.19.1 General requirementse Danger!Risk of fatal

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 33Pull the electronics box forward and lower.Unclip the back cover of the elec

34 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.19.4 Connection diagramsBurner cable harnessWiring harness hydraulicsConn

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 35X 2BUS— +24V7 8 9230VL N 3 4 5X 20X40X31X12X41El

36 Installation and maintenance instructions ecoTEC plus 937 0020031552_06BUS— +24V7 8 9230VL N 3 4 5X31X12Boiler electroni

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 375.20 Control units5.20.1 Vaillant control units and accessoriesController I

38 Installation and maintenance instructions ecoTEC plus 937 0020031552_065.20.4 Optional plug-in timers by VaillantFurther details for the connection

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 396 Commissioning, Part I6.1 Preparatory checks of the electrical systemCheck

4 Installation and maintenance instructions ecoTEC plus 937 0020031552_061 Notes on the documentationThe following information is intended to help yo

40 Installation and maintenance instructions ecoTEC plus 937 0020031552_066.4.2 Filling device for ecoTEC plus 937The ecoTEC plus 937 is fitted with

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 416.5 Flushing the system for the first time ("cold")i The entire

42 Installation and maintenance instructions ecoTEC plus 937 0020031552_066.9 Checking the gas settinga Caution!Malfunctions or reduction in working

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 436.9.2 Checking the gas flow rateThe boiler is fitted with a multifunctional

44 Installation and maintenance instructions ecoTEC plus 937 0020031552_06check if there is any blockage in the pipework or if the pipework is undersi

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 45The setting mode is also de-activated if a button is not pushed within a per

46 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Fig. 7.2 Display in heating mode7.1.3 Hot water operationSwitch on the appl

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 47The symbol "“ is displayed.Turn the hot water temperature control knob

48 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Leave the operating and installation instructions with the operator of the a

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 49We recommend the conclusion of an inspection and maintenance contract with a

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 51.7 Benchmarki Vaillant Ltd. supports the Benchmark Initia-tive. You will fi

50 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Always perform the following steps prior to inspection or maintenance work:S

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 518.1.4 Adjusting the CO2 concentration (or the air ratio)a Danger!Increased r

52 Installation and maintenance instructions ecoTEC plus 937 0020031552_068.1.5 Inspection and maintenance work stepsNo. ActivityColumn 1 Inspection

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 538.2 Maintaining the compact thermal module8.2.1 Removing the compact therm

54 Installation and maintenance instructions ecoTEC plus 937 0020031552_068.2.2 Cleaning the integral condensation heat exchangerb Caution!Risk of da

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 5510 9 8 4 5 7 6 Fig. 8.7 Fitting the thermo-compact moduleInsert the compact

56 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Fill the lower section with water until about 10 mm below the upper edge.Re-

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 578.6 Checking filling pressure of the expansion vessel of the shift load sto

58 Installation and maintenance instructions ecoTEC plus 937 0020031552_069 Troubleshooting9.1 Logical fault finding procedureCarry out the following

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 59Display MeaningHeating mode:S.0 No heat demandS.1 Fan runningS.2 Pump runnin

6 Installation and maintenance instructions ecoTEC plus 937 0020031552_062.2 Technical dataNameecoTEC plus 937Combination unit UnitNominal heat output

60 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Display Meaning Displayed value/settable valued.0 Heating partial loadAdjust

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 61Second diagnostic levelAs described above in the first diagnostic level, scr

62 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Display Meaning Displayed value/settable valued.72 Pump overrun time after w

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 63Code Meaning CauseF.0 Flow NTC open circuitNTC faulty, NTC cable faulty, fau

64 Installation and maintenance instructions ecoTEC plus 937 0020031552_06Code Meaning CauseF.74Signal water pressure sensor in the wrong range (too h

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 659.2 Test programmesDisplay MeaningP.0Bleeding test program. The heating circ

66 Installation and maintenance instructions ecoTEC plus 937 0020031552_0610.2 Replacing the burnera Danger!Risk of personal injury and/or material da

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 67Release both fixing screws (5) on the gas valve and remove the fan from the

68 Installation and maintenance instructions ecoTEC plus 937 0020031552_0610.5 Replacing the primary heat exchangera Danger!Risk of personal injury a

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 69b Caution!Possible material damage caused by loos-ening or retightening the

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 72.3 Dimensions2412064272088332310010044035 3513018017527324356659886432157912

70 Installation and maintenance instructions ecoTEC plus 937 0020031552_06215436Fig. 10.8 Replacing storage tank pumpRemove the discharge pipe (1) of

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 71Replacing components 10Fit the pipe elbow onto the new Aqua-Sensor and use n

72 Installation and maintenance instructions ecoTEC plus 937 0020031552_0611 Recycling and disposalBoth the gas fired boiler and its transport packag

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 73EC declaration of conformityEC declaration of conformity

74 Installation and maintenance instructions ecoTEC plus 937 0020031552_06

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 75Installation,Commissioning andService Record

76 Installation and maintenance instructions ecoTEC plus 937 0020031552_06

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 77

8 Installation and maintenance instructions ecoTEC plus 937 0020031552_062412064272088310010044035351756432151301801981234578Fig. 2.2 Dimensions shif

0020031552_06 GBIE 102010 — Subject to alterations

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 92.4 Structure and functional elementsThe ecoTEC plus 937 consists of a modif