Contents
2 Installation and maintenance instructions SUSTAIN ..c 0020200954_00
Contents
1 Safety .................................................................... 4
1.1 Action-related warnings ......................................... 4
1.2 Risk caused by inadequate qualifications.............. 4
1.3 Intended use ......................................................... 4
1.4 General safety information .................................... 4
1.5 Regulations (directives, laws, standards) .............. 6
2 Notes on the documentation .............................. 8
2.1 Observing other applicable documents ................. 8
2.2 Storing documents................................................. 8
2.3 Applicability of the instructions .............................. 8
3 Product description............................................. 8
3.1 Serial number ........................................................ 8
3.2 Information on the identification plate.................... 8
3.3 CE label ................................................................. 8
3.4 Functional elements............................................... 9
4 Installation............................................................ 9
4.1 Transporting the unit.............................................. 9
4.2 Unpacking the product........................................... 9
4.3 Checking the scope of delivery.............................. 9
4.4 Dimensions.......................................................... 10
4.5 Minimum clearances............................................ 10
4.6 Clearance from combustible components ........... 10
4.7 Using the installation template............................. 10
4.8 Wall-mounting the product................................... 10
4.9 Removing/installing the front casing.................... 11
4.10 Removing/installing the side section ................... 11
5 Installation.......................................................... 12
5.1 Preparing for installation...................................... 12
5.2 Gas and water connections ................................. 12
5.3 Connecting the drain line for the expansion
relief valve............................................................ 12
5.4 Connecting the condensate drain pipework ........ 13
5.5 Installing the air/flue pipe..................................... 13
5.6 Electrical installation ............................................ 15
6 Operation............................................................ 16
6.1 Using diagnostics codes ...................................... 16
6.2 Displaying the status codes ................................. 17
6.3 Using check programmes.................................... 17
7 Start-up ............................................................... 17
7.1 Carrying out the initial start-up............................. 17
7.2 Checking the type of gas ..................................... 17
7.3 Checking the factory setting ................................ 17
7.4 Checking and treating the heating water/filling
and supplementary water .................................... 18
7.5 Preventing low water pressure ............................ 19
7.6 Switching on the product ..................................... 19
7.7 Filling the heating installation .............................. 19
7.8 Purging the heating installation ........................... 19
7.9 Purging the product ............................................. 19
7.10 Filling the condensate siphon .............................. 19
7.11 Filling the hot water circuit ................................... 19
7.12 Checking the leak-tightness of the flue gas
system and for flue gas recirculation ................... 20
7.13 Checking the gas connection pressure (gas
flow pressure) ...................................................... 20
7.14 Checking the CO₂ content ................................... 20
7.15 Setting the CO₂ content ....................................... 20
7.16 Checking function and leak-tightness.................. 21
8 Adapting the unit to the heating
installation.......................................................... 21
8.1 Burner anti-cycling time ....................................... 21
8.2 Setting the pump output....................................... 21
8.3 Setting the bypass valve...................................... 22
8.4 Setting the hot water temperature ....................... 22
9 Handing the product over to the operator ...... 22
10 Inspection and maintenance ............................ 22
10.1 Observing inspection and maintenance
intervals ............................................................... 22
10.2 Procuring spare parts .......................................... 22
10.3 Removing the gas-air mixture unit ....................... 22
10.4 Cleaning the heat exchanger............................... 23
10.5 Checking the burner ............................................ 24
10.6 Installing the gas-air mixture unit ......................... 24
10.7 Cleaning the condensate siphon ......................... 24
10.8 Cleaning the filter in the cold water inlet.............. 24
10.9 Draining the product ............................................ 24
10.10 Checking the admission pressure of the
expansion vessel ................................................. 24
10.11 Completing inspection and maintenance work .... 24
11 Troubleshooting ................................................ 24
11.1 Rectifying faults ................................................... 24
11.2 Calling up the fault memory................................. 25
11.3 Deleting the fault memory.................................... 25
11.4 Resetting parameters to factory settings ............. 25
11.5 Preparing the repair work .................................... 25
11.6 Replacing defective components......................... 25
11.7 Completing repair work........................................ 27
12 Decommissioning the product......................... 27
13 Customer service............................................... 27
Appendix ............................................................................ 28
A Check programmes – Overview ....................... 28
B Overview of diagnostics codes........................ 28
C Status codes – Overview .................................. 32
D Overview of fault codes .................................... 33
E Connection diagram: Combination unit .......... 35
F Connection diagram: Combination unit (35
kW) ...................................................................... 36
G Inspection and maintenance work –
Overview............................................................. 37
H Opening in the air/flue pipe .............................. 38
H.1 Positioning of the opening of a fan-supported
flue gas pipe ........................................................ 38
H.2 Text from BS 5440-1 on fan-supported flue
gas pipes ............................................................. 39
H.3 Opening of the flue pipe below eaves and
balconies.............................................................. 39
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