DeDietrich C 230 ECO Manual

D000651
C 230 ECO
Gas fired condensing boiler
Installation and
Service Manual
300015171-001-01
EN

2C 230 ECO 03/10/2012 - 300015171-001-01
Declaration of conformity 1
The appliance complies with the standard model described in
declaration of compliance 1. It is manufactured and distributed
pursuant to the requirements of european directives. The original of
the declaration of compliance is available from the manufacturer.
C002764-A

3
03/10/2012 - 300015171-001-01 C 230 ECO
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1 Symbols and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.1 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.2 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.3 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3.2 Gas category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2 Safety instructions and recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1.1 Fire hazard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1.2 Risk of intoxication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1.3 Risk of being burnt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.1.4 Risk of damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3 Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.2 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.3 Main parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.4 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.4.1 Operating cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.4.2 Cyclical sealing control of the gas valve unit (170, 210 kW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.4.3 Minimum gas pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.4.4 Max. safety temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.4.5 Flow controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1 Regulations governing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1.1 In general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1.2 In particular for France . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1.3 En particulier pour l’Allemagne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2 Package list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4.3 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3.1 Position of the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3.2 Main dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.3.3 Control panel assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.4 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.4.1 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.4.2 Hydraulic connection of the heating circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.4.3 Connecting the condensate discharge pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
4.4.4 Water treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.4.5 Circulating pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
4.4.6 Low loss header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
4.5 Gas connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

4C 230 ECO 03/10/2012 - 300015171-001-01
4.6 Flue gas system connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.6.1 Connection options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.6.2 Classification of type according to the discharge of combusted gases and air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.6.3 Connection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.6.4 Connection to a type B23 / B23p chimney . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
4.6.5 Forced flue connection type C13 and C33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
4.6.6 Forced flue equipment (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.6.7 Connecting separate type C53 ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
4.6.8 Installation of 2 boilers in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
4.7 Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.7.2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.8 Skeleton Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.1 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.2 Check points before commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.3 Commissioning procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
5.4 Gas settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
5.4.1 Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
5.4.2 Fan speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
5.4.3 Setting the gas/air ratio (Full load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
5.4.4 Setting the gas/air ratio (Low speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
5.4.5 Limiting input to 115 kW (Only 4 section boilers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
5.5 Changing gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
5.5.1 Switching from gas H to gas L/Lw and vice versa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
5.5.2 Switching from Natural Gas to Propane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.5.3 Setting the burner parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.5.4 Adjustment of the CO2values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.6 Changing the settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
6 Switching off the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
6.1 Precautions to take if there is a danger of frost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
6.2 Precautions to take in the event of prolonged shutdown (one year or more) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7 Checking and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.2 Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.2.1 Checking the combustion in the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.2.2 Setting the ignition electrode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
7.2.3 Checking tightness (hydraulics, combusted gas discharge and gas) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
7.2.4 Checking the hydraulic pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
7.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
7.3.1 Clean the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
7.3.2 Clean the heat exchanger using the tool provided. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
7.3.3 Clean the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
7.3.4 Clean the siphon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
7.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
8 Spare parts - C 230 ECO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

5
03/10/2012 - 300015171-001-01 C 230 ECO
1 Introduction
1.1 Symbols and abbreviations
Caution danger
Risk of injury and damage to equipment. Attention must be
paid to the warnings on safety of persons and equipment.
Specific information
Information must be kept in mind to maintain comfort.
ZReference
Refer to another manual or other pages in this instruction
manual.
DHW: Domestic hot water
PCU: Primary Control Unit (Operating management electronics)
SU: Safety Unit (Safety electronics)
PSU: Parameter Storage Unit (Boiler parameter storage)
CCE: Leak proofing system
1.2 General
Thank you for choosing this quality product. We are convinced that it
will meet all of your expectations.
In the interest of customers, De Dietrich Thermique SAS are
continuously endeavouring to make improvements in product quality.
All the specifications stated in this document are therefore subject to
change without notice.
1.2.1 User's liability
To ensure the optimum operation of your appliance, we strongly
recommend that you abide by the following instructions:
`Read and follow the instructions given in the manuals provided
with the appliance.
`Call on qualified professionals to :
- Carry out installation in compliance with the prevailing legislation
and standards,
- Perform the initial start up
- Carry out work on the appliance and the installation
`Keep these instructions in a safe place close to the appliance.
`Get your installer to explain your installation to you.
1.2.2 Manufacturer's liability
`The liability of De Dietrich Thermique SAS as the manufacturer
may not be invoked in the following cases:
- Failure to abide by the instructions on using the appliance,
- Faulty or insufficient maintenance of the appliance,
- Failure to abide by the instructions on installing the appliance.

6C 230 ECO 03/10/2012 - 300015171-001-01
1.3 Homologations
1.3.1 Certifications
In general
CE identification no: CE-0085BS0132
In particular for France
Performance class III boiler according to ATG B 84
recommendations.
In particular for Switzerland
The boilers comply with the following standards:
- Federal legislation on Air Protection (OPAIR)
- Directives of the Société Suisse de l'Industrie des Gaz et des Eaux
SSIGE
- Directives of local and cantonal bodies
- CFST directives, liquefied gases, part 2
- Directives of the Association des Etablissements Cantonaux
d'Assurance Incendie AEAI
Boilers are tested under the LRV-92 standard.

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03/10/2012 - 300015171-001-01 C 230 ECO
1.3.2 Gas category
In general
C 230 ECO boilers are delivered preset for operation on natural
gases of H/E groups.
ZFor operation on another type of gas, see chapter "Changing
gas".
User country Gas
category Gas type Connection pressure (mbar)
FR II2ESi3P
G20 20
G25 25
G31 37
DE II2ELL3P
G20 20
G25 20
G31 50
PL II2ELw3P
G20 20
G27 20
G31 37
BE
I2E(R)B G20 20
I3P G31 37
NL
II2L3P
G25 25
G31 30/50
I2H G20 25
HU II2HS3P
G20 25
G25.1 25
G31 50
LU II2E3P
G20 20
G31 50
UA, LV I2H G20 20
AT, BG II2H3P
G20 20
G31 50
DK, EE, FI, IS, NO, RO,
SE II2H3P
G20 20
G31 30
IE, LT, SI, ES, GB, IT,
CH, TR, GR, PT II2H3P
G20 20
G31 37
CZ, CY, BY, HR, RU, SK II2H3P
G20 20
G31 37
G31 50
MT I3P G31 37

8C 230 ECO 03/10/2012 - 300015171-001-01
2 Safety instructions and recommendations
2.1 Safety instructions
2.1.1 Fire hazard
Do not stock products of an inflammable nature close to
the appliance.
If you smell gas, do not use a naked flame, do not smoke,
do not operate electrical contacts or switches (doorbell,
lights, motor, lift, etc.).
1.Shut off the gas supply
2.Open the windows
3.Extinguish all flames
4.Evacuate the premises
5.Contact a qualified professional
6.Inform the gas supplier
2.1.2 Risk of intoxication
Do not obstruct the air inlets in the room (even partially). If you smell flue gases
1. Switch the appliance off
2. Open the windows
3. Evacuate the premises
4. Contact a qualified professional
2.1.3 Risk of being burnt
Avoid direct contact with the flame viewport. Depending on the settings of the appliance:
- The temperature of the flue gas conduits may exceed 60°C
- The temperature of the radiators may reach 95°C
- The temperature of the domestic hot water may reach 65°C
2.1.4 Risk of damage
Do not stock chloride or fluoride compounds close to the
appliance.
Install the appliance in frost-free premises.
Do not neglect to service the appliance: Contact a qualified
professional or take out a maintenance contract for the annual
servicing of the appliance.
2.2 Recommendations
Only qualified professionals are authorised to work on the
appliance and the installation.
Before any work, switch off the mains supply to the
appliance.
Check regularly that the installation contains water and is
pressurised.
Keep the appliance accessible at all times.
Avoid draining the installation.
The appliance should be on Summer or Antrifreeze mode rather than
switched off to guarantee the following functions:
- Frost protection
- Protection against corrosion on domestic hot water tanks fitted
with a titanium anode

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03/10/2012 - 300015171-001-01 C 230 ECO
3 Technical description
3.1 General description
The C 230 ECO boiler is a gas fired condensing boiler.
The cast aluminium-silicium heat exchanger is designed for the
recuperation of the sensible and latent heat in combusted gases.
This watertight combustion circuit boiler can be used in a forced flue
version. Installation with air intake from the premises is also possible.
The burner and the combustive air inlet fan are very quiet.
Gas and combustive air is supplied via the upper part of the boiler.
Underneath the boiler is a condensates collector in composite
material and a siphon to evacuate condensates, located on the side.
The flow temperature can be set between 20°C and 90°C (Factory
setting: 80 °C).
The C 230 ECO boiler is fitted with a low water safety system based
on divergence and rise in temperature readings.
Output may modulate between 18%(1) and 100% depending on the
heating requirement. The boilers can be fitted with a DIEMATIC-
m3(2) electronic control panel which is factory set to include priority
domestic hot water production and a control system which operates
according to the outside temperature.
The DIEMATIC-m3 control panel with built-in regulator controls
automatic operation of heating as a function of:
- The outside temperature.
- The ambient temperature when the remote control (as an option)
is connected.
The K3 control panel is fitted only in association with a boiler fitted
with a DIEMATIC-m3 control panel as part of a cascade installation.
DHW regulation and programming is handled by the DIEMATIC-m3
control panel on the master boiler.
The regulator also provides antifreeze protection for the installation
and the environment, if the home is empty, for a period that may be
programmed one year in advance and lasting for up to 99 days.
(1) Depending on the boiler model
(2) or K3 control panel for the secondary boiler(s)

10 C 230 ECO 03/10/2012 - 300015171-001-01
3.2 Technical specifications
C 230-... ECO Unit 85 130 170 210
General
Number of sections 3 4 5 6
Burner operation Modulating
Useful output (80/60°C) PN (G20) minimum kW 16 22 29 39
maximum kW 87 113(1)/120 166 200
Useful output (50/30°C) PN (G20) minimum kW 18 24 33 44
maximum kW 93 121(1)/129 179 217
Burner output (Hi) (G20) (Power input) minimum kW 17 23 31 41
maximum kW 89 115(1)/123 170 205
Combustion gas and by-products
Gas supply pressure G20 mbar 17 - 30
Gas flow rate G20 (15 °C - 1013 mbar) minimum m3/h 1.8 2.4 3.3 4.3
maximum m3/h 9.4 12.2(1)/13 18 21.7
Gas flow rate G25 (15 °C - 1013 mbar) minimum m3/h 2.1 2.8 3.8 5.0
maximum m3/h 11 14.4 20.9 25.2
Gas flow rate G27 (15 °C - 1013 mbar) minimum m3/h 2.2 3.0 4.0 -
maximum m3/h 11.5 15.9 22.0 -
Gas flow rate G31 minimum Kg/h 1.94 1.94 3.42 3.19
maximum Kg/h 6.91 9.56 13.21 15.93
CO2(G20-G25) Qmin.-Qmax (Open air box) % 9.3-8.8 9.3-8.8 9.3-8.8 9.3-8.8
CO2(G20-G25) Qmin.-Qmax (Closed air box) % 9.5-9.0 9.5-9.0 9.5-9.0 9.5-9.0
CO2(G27) Qmin.-Qmax (Open air box) % 9.3-8.8 9.3-8.8 9.3-8.8 -
CO2(G27) Qmin.-Qmax (Closed air box) % 9.5-9.0 9.5-9.0 9.5-9.0 -
CO2(G31) Qmin.-Qmax (Open air box) % 10.5-9.8 10.5-9.8 10.5-9.8 10.5-9.8
CO2(G31) Qmin.-Qmax (Closed air box) % 10.7-10.0 10.7-10.0 10.7-10.0 10.7-10.0
Average nitrogen oxide emission (NOx) mg/kWh 62 54 49 58
Average CO emission mg/kWh 19 15 16 19
Maximum residual fan duty for flue gas Pa 130 130 130 130
Combusted gas flow (2)
minimum Kg/h 27.2 36.7 49.5 65.5
maximum Kg/h 149.7 193.5(1)/
206.9 286.0 344.9
Classification of type according to the discharge of
combusted gases and air supply B23, B23P, C13, C33, C43, C53, C63, C83
Heating
Safety temperature °C 110
Water setting range °C 20 - 90
Water pressure minimum bar 0,8
maximum bar 6
Water content l 12 16 20 24
Water resistance at 'T = 10K mbar 660 540 680 720
Water resistance at 'T = 20K mbar 165 135 170 180
Electricity characteristics
Power supply voltage V/Hz 230 / 50

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03/10/2012 - 300015171-001-01 C 230 ECO
(1) For Italy - Limiting input to 115 kW : See chapter: 5.4.5
(2) G20 - Gas H
Power consumption minimum W 34 36 56 59
maximum W 125 193 206 317
Insulation class IP 21
Miscellaneous
Weight without water kg 130 150 170 200
Acoustic level at 1 metre dBA d57 d63
C 230-... ECO Unit 85 130 170 210

12 C 230 ECO 03/10/2012 - 300015171-001-01
3.3 Main parts
262721199151718201312142524232213028292354786101116
0D00658
1Flue gas discharge duct
2Measurement point O2/CO2(Emplacement for fue gas sensor,
Option)
3Air enclosure
4Control panel
5Burner
6Heat exchanger
7Inspection hatch
8Inspection cap / Cleaning
9Ignition electrode / Ionization probe
10 Heating body sensor
11 Return sensor
12 Condensates collector
13 Siphon
14 Silencer
15 Filling and emptying tap
16 Circuit breaker
17 Multivalve gas unit
18 Venturi
19 Fan
20 Mixer pipe
21 Flue gas pressure switch
22 Output sensor
23 Connector for the programming tool
24 Gas connection
25 Return connection
26 Flow connection
27 Reset button
28 Display DIEMATIC-m3
29 Air inlet (Protective cage)
30 General ON 8/ OFF 7switch

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03/10/2012 - 300015171-001-01 C 230 ECO
3.4 Operating principle
A venturi is placed to the side of the fan inlet. The air and gas are
mixed in here at a constant ratio.
The fan carries out a pre-sweep if there is a heat request. The fan
sucks in the combustive air which will be optimally mixed with the gas
in the venturi. The homogenous air/gas mixture is fed into the burner
by the fan.
The mixture is ignited by the ignition/ionization combination electrode
which also monitors the flame.
Boiler output is set according to the settings and temperatures of the
water measured by the temperature sensors. When the combusted
gas temperatures are lower than the dew point (approx. 55°C, the
temperature as of which the steam in the combusted gases starts to
condense), the steam in the combusted gases will condense in the
lower part of the heat exchanger. The heat released during this
condensation process (so-called latent or condensation heat) is also
transferred to the central heating water. The condensed water is
discharged via the siphon in the lower section of the heat exchanger.
The combusted gases go into the condensates collector and are
evacuated via the combusted gas evacuation duct.
To provide continuous heat, the boiler requires a minimum of 30% of
the water flow rate at a 'T of 20 K at nominal output, high stage. The
boiler can be ocnstructed with a second return (accessory). This
second return can provide additional efficiency when various
temperatures are present in the installation.
The DIEMATIC-m3 control panel controls the room temperature in
accordance to the outside temperature by action on the burner.
Heating regulation is controlled by the influence of the regulator on
the burner, the pumps and, if installed, the mixing valve(s).
Connecting a remote control with room sensor or an interactive
remote control CDI 2 also enables self adaptivity of the gradient and
the parallel offset of the heating curve.
The "installation anti-freeze" function is active regardless of the
operating mode. It is triggered as soon as the outdoor temperature
reaches the limiting value preset to +3°C (see paragraph: Further
information on various parameters).
The domestic hot water is regulated by the regulator acting on the
load pump through the DHW sensor. The DHW loop can be handled
by the S.AUX1:, S.AUX2: or S.AUX3: outlet (Heating according to
the time programme).
The DIEMATIC-m3 control panel includes the "anti-legionella"
protection option
ZSee: Control panel instructions (Installer parameters: LEG
PROTEC).
In a cascade installation, the K3 control panel is intended to be fitted
to the secondary boilers.

14 C 230 ECO 03/10/2012 - 300015171-001-01
3.4.1 Operating cycle
Normal operating cycle
Operating cycle on safety (start up without flame
signal)
The safety control box makes 5 attempts to restart.
If restart fails, the safety control box switches to BURNER FAILURE (14).
Remarks:
Minimal ionization current: 1µA
TwTlTplT3nD000784TvzHeating request
Fan
Safety valve
Ignition transformer
V1 and V2
Flame present
TwTlTsTlTsTsTlTlTsTlTsTplTvzTvzTvzTvzTvz
D007830
Heating request
Fan
Safety valve
Ignition transformer
V1 and V2
Flame present
BURNER FAILURE (14)
Tl Preventilation time (20 seconds)
Ts Safety time (3.5 seconds)
Tpl Post-ventilation time (20 seconds)
Tvz Pre-ignition time
Tw Waiting time (After a thermostatic request - about 20 seconds)
T3n Ignition time

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03/10/2012 - 300015171-001-01 C 230 ECO
Loss of flame when running
After the loss of signal, the safety control box switches to
BL.FLAME LOS (22) for 10 seconds.
If the safety control box detects 5 flame losses, it goes into
safety shutdown with the message I-CURRENT FAIL (36).
If the safety control box does not detect the flame loss 24 hours
after the last loss, the meter is reset to zero.
TlTvzD000785TsTl
T3n
TlTlTlTs
T3n
Ts
T3n
Ts
T3n
TsTpl
T3n
TvzTvzTvzTvz
Heating request
Fan
Safety valve
Ignition transformer
V1 and V2
Flame present
BL.FLAME LOS 22 then
I-CURRENT FAIL 36
Tl Preventilation time (20 seconds)
Ts Safety time (3.5 seconds)
Tpl Post-ventilation time (20 seconds)
Tvz Pre-ignition time
Tw Waiting time (After a thermostatic request - about 20 seconds)
T3n Ignition time

16 C 230 ECO 03/10/2012 - 300015171-001-01
3.4.2 Cyclical sealing control of the gas valve unit (170, 210 kW)
The sealing control system for the gas valve unit controls and checks
the safety valves in the combined gas valve unit. The VPS system
checks the tightness of the 2 valves during the pre-sweep, which
extends the pre-sweep time somewhat. If a leak is detected, the
boiler goes into safety shutdown (locking). The fault is indicated on
the DIEMATIC-m3.
The connection of the sealing control system is made by a plug that
can be found in the control panel. The presence of the sealing control
system must be activated by the parameter "Kit CCE".
3.4.3 Minimum gas pressure switch
It is possible to connect a minimum gas pressure switch to the PSG
connector. If there is a lack of gas pressure, the boiler is switched off
with a message on the DIEMATIC-m3 if the set value is not reached.
The boiler restarts when the pressure is back to normal and after the
waiting time of 10 minutes.
3.4.4 Max. safety temperature
The boiler goes into safety shutdown if the temperature is too high
(110°C or less). After the breakdown has been repaired, the boiler
can be unlocked by pressing the key.
3.4.5 Flow controller
The maximum difference in temperature between the outlet water
and the return water, and the speed at which the outlet temperature
increases, are restricted by the boiler's regulation.
This principle guarantees risk-free operation for the boiler even
during transitory irrigation operations induced by changes of status
on the installation's hydraulic units (closure 3-way valve, circuit
shutdown, etc.). These settings lead to the burner being put on
standby in order to protect the boiler from any damage.
We strongly recommend guaranteeing at all times a minimum flow
corresponding to 30% of the nominal flow Qn (flow corresponding to
a 'T of 20K at Pn at 80/60°C). This enables optimum operation of
the boiler's output range modulation device in order to get the best
out of condensation (See table below).
Maximum water flow: Flow speeds in the heating body which are too
high reduce the transfer of heat. Therefore, it is necessary to restrict
the water flow to the value obtained using the following formula:
Qmaximum = Nominal useful output to 80/60 °C / 9,3 (See table
below)
The C 230 ECO boiler is fitted with an electronic temperature
regulator with flow and return temperature sensors.
Boiler type Flow rate
(m3/h)
C230-85
Q minimum 1.0
Qn 3.4
Q maximum 8.6
C230-130
Q minimum 1.6
Qn 5.2
Q maximum 12.9
C230-170
Q minimum 2.1
Qn 6.9
Q maximum 17.2
C230-210
Q minimum 2.6
Qn 8.6
Q maximum 21.5

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03/10/2012 - 300015171-001-01 C 230 ECO
4 Installation
4.1 Regulations governing installation
4.1.1 In general
Installation and maintenance of the boiler must be carried out by a
qualified professional in compliance with prevailing local and national
regulations.
4.1.2 In particular for France
DTU 24.1 and DTU 65.4 define the technical terms and conditions
with which the boiler room installation work must comply.
Residential buildings
Statutory terms and conditions of installation and maintenance:
The installation and maintenance of the appliance must be carried
out by a qualified professional in compliance with the statutory texts
of the codes of conduct in force, particularly:
- Order of 27 April 2009 amending the Order of 2 August 1977
Technical and safety rules applicable to combustible gas and
liquefied hydrocarbon installations situated inside residential
buildings and their annexes.
- NF P 45-204 standards
Gas installation, (formerly DTU 61-1, gas installations: April 1982,
addendum no 1: July 1984).
- Local Sanitary Regulations
For appliances connected to the electricity network:
- NF C 15-100 standards Low voltage electrical installation - Rules..
Establishments open to the public
Statutory terms and conditions of installation:
The installation and maintenance of the appliance must be carried
out in compliance with the statutory texts and rules of the codes of
conduct in force, particularly:
- Safety regulations against fire and panic in establishments open to
the public:
a. General regulations
For all appliances:
- Articles GZ - Installations operating on combustible gases and
liquefied hydrocarbons.
Then, depending on use:
- Articles CH-Heating, ventilation, refrigeration, air conditioning and
production of steam and domestic hot water.
b. Instructions specific to each type of establishment open to the
public (hospitals, stores, etc.).
Certificate of compliance
In application of Article 25 of the Order of 27 April 2009 amending the
Order of 2 August 1977 amended and Article 1 of the amended Order
of 05/02/1999, the installer is required to draw up certificates of
conformity approved by the Ministers responsible for construction
and gas safety:
- Different forms (forms 1, 2 or 3) for a new gas installation
- Model 4 in particular after replacing a furnace with a new one

18 C 230 ECO 03/10/2012 - 300015171-001-01
4.2 Package list
Boilers
- C 230-85 ECO: Package GV1
- C 230-130 ECO : Package GV2
- C 230-170 ECO : Package GV3
- C 230-210 ECO : Package GV4
Control panel
- DIEMATIC-m3 control panel: Package GV6
- K3 control panel: Package GV5
Options available
- Flue gas thermostat - Package GV21
- Interactive remote control CDI 2 with room temperature sensor
(package FM51), remote control with room temperature sensor
(package FM52)
An interactive remote control CDI 2 (package CDI 2 (FM51))
and/or a simplified remote control (package FM52) may be
connected for each circuit controlled by the boiler.
- Armoured connecting cable (length 40 metres) for connecting
DIEMATIC VM or boiler cascade configuration (package DB119)
- TELCOM telephone remote relay
-For the connection of one or two circuits with mixer valve: 1
or 2 PCB + sensor option(s) for 1 valve (package FM48)
- Air filter - Package GR8
- Horizontal forced flue
- Vertical forced flue
- Leak tightness control on gas block (5 and 6 section only) -
Package GV26
- Minimum gas pressure switch (3 to 4 sections) - Package GV22
- Minimum gas pressure switch (5 to 6 sections) - Package GV25
- Condensate neutralisation system with lift pump (Pn<120 kW -
Package DU13, 120<Pn<350 kW - Package DU14, Pn >350 kW -
Package DU15)
- Condensate neutralisation system without lift pump (Package
BP52)
- Expansion valve GDJ 50 300 - 20 mbar (8802-7177) or GDJ 25
300 - 20 mbar (100011223)
- Flue gas valve - Package GV24
- Propane conversion kit (3 to 4 sections) - Package GV23
- Propane conversion kit (5 to 6 sections) - Package GV27
- Second return kit (Package GR5)

19
03/10/2012 - 300015171-001-01 C 230 ECO
4.3 Mounting
4.3.1 Position of the boiler
Location
C 230 ECO boilers must be installed in a frost-free room.
In order to avoid damage to the boiler, it is necessary to
prevent the contamination of combustion air by chlorine
and/or fluoride compounds, which are particularly
corrosive. These compounds are present, for example, in
aerosol sprays, paints, solvents, cleaning products,
washing products, detergents, glues, snow clearing salts,
etc.
Therefore:
- Do not pull in air evacuated from premises using such
products: hairdressing salons, dry cleaners, industrial
premises (solvents), premises containing refrigeration
systems (risk of refrigerant leakage), etc.
- Do not stock such products close to the boilers.
If the boiler and/or peripheral equipment are corroded by
such chloride or fluoride compounds, the contractual
guarantee cannot be applied.
The warranty does not apply to damage to the boiler caused by these
instances. If the heating device is installed in residential premises
where people are present all the time, it is necessary to use a
concentric ambient air inlet / combustion gas evacuation installation.
When installing the boiler, it is necessary to comply with degree of
protection IP21.
Position of the boiler
The boiler is delivered fully assembled as standard, covered with
plastic wrap, in a pallet crate (70x130 cm), enabling easy handling
with a pallet stacker.
This crate is designed to facilitate handling of the unit and to help in
the positioning of the boiler.
The standard packaging enables access to doors of 745 mm.
The C 230 ECO can be positioned as follows:
- Place the pallet close to the final installation position.
- Remove the packaging.
- Place the boiler in its final position.

20 C 230 ECO 03/10/2012 - 300015171-001-01
Example of an installation
The minimum recommended dimensions are as follows:
- Front: 600 mm
- Top: 400 mm
- Left: 50 mm
- Right: 250 mm
Installing 1 boiler(s)
Installing 2 boiler(s)
Installing 2 boiler(s)
Installing 2 boiler(s) back to back
D000650