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Vaillant ecoTEC plus 937 Instructions And Maintenance Instructions

Vaillant ecoTEC plus 937
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Contents
3Installation and maintenance instructions ecoTEC plus 0020031552_03
6 Commissioning Part II: Functional
checks ............................................................36
6.1 Functional checks ................................................ 36
6.1.1 Method of procedure .......................................... 36
6.1.2 Heating ................................................................... 36
6.1.3 Hot water operation ............................................ 36
6.1.4 Storage tank charging ........................................ 36
6.1.5 Subsequent flushing through of the
heating system ("hot") ........................................37
6.2 Handing over the boiler to the owner ............ 38
6.3 Vaillant warranty.................................................. 38
6.3.1 Two years warranty ............................................ 38
6.3.2 Registering with us .............................................. 38
6.3.3 First aid ................................................................... 38
7 Inspection and maintenance .......................39
7.1 First inspection ..................................................... 39
7.1.1 Safety instructions .............................................. 39
7.1.2 Maintenance .......................................................... 39
7.1.3 Overview of inspection and maintenance
tasks ........................................................................40
7.1.4 Function check of the combination boiler ...... 41
7.2 Maintenance of the thermo-compact
module ..................................................................... 41
7.2.1 Remonving the thermo-compact module ....... 41
7.2.2 Cleaning the integral condensation
heat-exchanger ..................................................... 42
7.2.3 Checking the burner ............................................ 42
7.2.4 Fitting the thermo-compact module ............... 42
7.3 Cleaning the condensate siphon ...................... 43
7.4 Cleaning strainer in cold water supply ........... 43
7.5 Checking filling pressure of the expansion
vessel of the combination boiler ......................44
7.6 Checking filling pressure of the expansion
vessel of the shift load storage tank ..............44
7.7 Re-commissioning the combination boiler ....44
7.8 Test mode ..............................................................45
8 Troubleshooting ........................................... 46
8.1 Logical fault finding procedure ........................46
8.1.1 Status codes ..........................................................46
8.1.2 Diagnostic codes .................................................. 47
8.1.3 Error codes ............................................................49
8.1.4 Fault memory ........................................................ 49
8.2 Test programmes .................................................. 51
8.3 Resetting the parameters to factory
settings .................................................................... 51
9 Replacing components ................................ 52
9.1 Safety instructions .............................................. 52
9.2 Replacing the burner .......................................... 52
9.3 Replacing the fan or gas valve ......................... 52
9.4 Replacing the expansion vessel ....................... 53
9.5 Replacing the primary heat exchanger .......... 53
9.6 Replacing the expansion vessel of the
shift load storage tank........................................54
9.7 Replacing the storage tank pump of the
shift load storage tank........................................ 55
9.8 Replacing the aqua sensor ................................55
9.9 Replacing the electronics on the shift
load storage tank ................................................. 56
9.10 Replacing the electronics and the display
on the combination boiler .................................. 56
9.11
Checking and setting the CO
2
content, if
required (air ratio adjustment) ......................... 57
10 Recycling and disposal ................................ 58
10.1 Unit ..........................................................................58
10.2 Packaging ...............................................................58
11 Vaillant service ............................................ 58
EC declaration of conformity .................................59

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Vaillant ecoTEC plus 937 Specifications

General IconGeneral
ModelecoTEC plus 937
CategoryBoiler
TypeCombination
Output37 kW
Dimensions720x440x338 mm
MountingWall-mounted
ERP Efficiency RatingA
Fuel TypeNatural Gas
Flow Rate15.2 l/min
Hot Water Flow Rate15.2 l/min at 35°C temperature rise
Gas TypeNatural Gas
Warranty5 years
Efficiency94%
DHW Output4.0 - 37.0 kW

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