Install Instructions

Key to symbols and safety instructions | 3
6 720 806 992 (2013/09)Greenstar
10.2 Changing the pump curve of the boiler pump . . . . . . . 57
11 Heatronic boiler control settings . . . . . . . . . . . . . . . . . . . . . . . 58
11.1 Guideline to service functions . . . . . . . . . . . . . . . . . . . . 58
11.2 Overview of the service functions . . . . . . . . . . . . . . . . . 58
11.2.1 First service level (press and hold the service button
until it lights up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
11.2.2 Second service level (at first service level, service
button lights up, press ECO button and key pad lock
button simultaneously until 8.A appears) . . . . . . . . . . 59
11.3 Description of the service functions . . . . . . . . . . . . . . . 59
11.3.1 First service level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
11.3.2 Second service level . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12 Gas type conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12.1 Converting to a different gas type . . . . . . . . . . . . . . . . . 65
12.2 Installation location higher than 2,000 feet (610 m)
above sea level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12.3 Setting the gas-air ratio (CO
2
or O
2
) . . . . . . . . . . . . . . . 66
12.4 Dynamic gas pressure test . . . . . . . . . . . . . . . . . . . . . . 67
13 Flue gas test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
13.1 Emissions test button . . . . . . . . . . . . . . . . . . . . . . . . . . 68
13.2 Measuring CO content of flue gas . . . . . . . . . . . . . . . . . 68
14 Environmental responsibility/disposal . . . . . . . . . . . . . . . . . . 68
15 Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 68
15.1 Description of various steps . . . . . . . . . . . . . . . . . . . . . 69
15.1.1 Calling up the latest fault (service function 6.A) . . . . . 69
15.1.2 Fresh water filter (only combi boiler ZWB..-3A) . . . . . 69
15.1.3 Plate type heat exchanger
(only combi boiler ZWB..-3A) . . . . . . . . . . . . . . . . . . . . 69
15.1.4 Checking the electrodes . . . . . . . . . . . . . . . . . . . . . . . . 70
15.1.5 Burner servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
15.1.6 Heat exchanger block inspection and cleaning . . . . . . 71
15.1.7 Condensate trap cleaning . . . . . . . . . . . . . . . . . . . . . . . 73
15.1.8 Checking the mixer diaphragm . . . . . . . . . . . . . . . . . . . 73
15.1.9 Expansion vessel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
15.1.10Setting the boiler water pressure . . . . . . . . . . . . . . . . . 73
15.1.11Testing system water quality . . . . . . . . . . . . . . . . . . . . . 73
15.1.12Inspecting electrical wiring . . . . . . . . . . . . . . . . . . . . . . 73
15.2 Checklist for inspection and maintenance . . . . . . . . . . 74
16 Readings on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
17 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
17.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
17.2 Faults that are shown on the display . . . . . . . . . . . . . . . 77
17.3 Faults that are not shown on the display . . . . . . . . . . . 79
17.4 Check sensor values . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
17.4.1 Outdoor temperature sensor . . . . . . . . . . . . . . . . . . . . . 80
17.4.2 Additional supply temperature limiter . . . . . . . . . . . . . 80
17.4.3 Supply temperature sensor, External supply
temperature sensor, DHW tank temperature sensor,
DHW temperature sensor . . . . . . . . . . . . . . . . . . . . . . . 80
17.5 Replacement code plug . . . . . . . . . . . . . . . . . . . . . . . . . 80
18 Commissioning log for the appliance . . . . . . . . . . . . . . . . . . . 81
19 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Keywords at the start of a warning indicate the type and seriousness of
the ensuing risk if measures to prevent the risk are not taken. The
following keywords are defined and can be used in this document:
• NOTICE indicates that property damage may occur.
• CAUTION indicates that personal injury may occur.
• WARNING indicates that severe personal injury may occur.
• DANGER indicates that severe personal injury or death may occur.
Important information
Additional symbols
1.2 General safety instructions
If you hear gas leaking
▶ Leave the building immediately.
▶ Prevent others from entering the building.
▶ Notify the police and fire department from outside the building.
▶ From outside the building, call the gas supply company and a trained
and certified installer or service company.
Warnings in this document are identified by a warning
triangle printed against a grey background.
Important information for the proper use of the boiler is
also provided in this manual. You will find the
information with a symbol shown on the left and
bordered by horizontal lines above and below the text.
Symbol Explanation
▶ Sequence of steps
 Cross-reference to other points in this document or to other
documents
• Listing/list entry
– Listing/list entry (2nd level)
Table 1