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Atag A203C Installation & Servicing Instructions

Atag A203C
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Installation & Servicing instructions ATAG A-Series
3
Contents
1 Introduction ....................................................................................................................................4
2 Rules ............................................................................................................................................4
3 Delivery package ............................................................................................................................6
4 Boiler description ............................................................................................................................6
5 Mounting the boiler .........................................................................................................................8
6 Connecting the boiler .....................................................................................................................9
6.1 Central heating system .......................................................................................................9
6.2 Expansion vessel ..............................................................................................................10
6.3 Water quality ..................................................................................................................... 11
6.4 Heating systems with plastic pipes ...................................................................................13
6.5 Gas connection .................................................................................................................13
6.4 Hot water supply (DHW Combi boilers) ............................................................................14
6.6 Condensation drain pipe ...................................................................................................15
6.7 Flue gas exhaust system and air supply system ..............................................................17
6.7.1 Dimensioning of the ue gas and air intake duct ............................................................21
7 External hot water cylinders (Solo boilers) ................................................................................... 22
8 Electrical connection ....................................................................................................................22
8.1 Room thermostat and controls .......................................................................................... 23
8.1.1 Detailed information about the connections possibilities ..................................................24
8.2 Electrical diagram Solo boiler ...........................................................................................26
8.3 Electrical diagram Combi boiler ........................................................................................27
9 Filling and bleeding of boiler and CH installation .........................................................................28
9.1 Hot water supply ...............................................................................................................29
10 Boiler controls ..............................................................................................................................29
9.1 Controls and explanation of the functions ......................................................................... 30
11 Commissioning the boiler ............................................................................................................. 31
11.1 Hot water supply ...............................................................................................................31
11.2 CH system ........................................................................................................................31
11.3 Pump function ...................................................................................................................31
11.4 Settings .............................................................................................................................32
11.5 Activating the factory setting (green button function) ........................................................34
12 Isolating the boiler .......................................................................................................................35
13 Commissioning .............................................................................................................................35
13.1 Checking the O
2
................................................................................................................36
13.2 Maintenance activities .......................................................................................................37
13.3 User's instructions .............................................................................................................39
13.4 Maintenance frequency .....................................................................................................39
13.5 Warranty ............................................................................................................................39
14 Error message .............................................................................................................................40
Annexe A Technical specications ....................................................................................................41
Annexe B Additives ...........................................................................................................................42
Annexe C Dimensions .......................................................................................................................43
Annexe D Declaration of Conformity .................................................................................................44
Annexe E Kiwa certicate .................................................................................................................. 45
Benchmark Checklist ............................................................................................................................46
Service Record ..................................................................................................................................... 47
Work on the installation should only be carried out by qualied personnel
with calibrated equipment and appropriate tools.

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Atag A203C Specifications

General IconGeneral
Type-
Fuel typeNatural gas
Boiler systemCombi boiler system
Product colorWhite
Heater locationIndoor
Placement supportedVertical
Boiler type (NL label)HR
HR inspection label class107
Maximum power20000 W
Minimum power4400 W
Water flow (60 °C)6 l/min
Domestic Hot Water (DHW) flow10.7 l/min
Weight and Dimensions IconWeight and Dimensions
Depth395 mm
Width500 mm
Height650 mm
Weight37000 g

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