User Guide
Table Of Contents
- Contents
- 1 Key to symbols and safety instructions
- 1.1 Key to symbols
- 1.2 Safety instructions
- 2 Information about the appliance
- 3 Preparing the appliance for operation
- 4 Operation
- 4.1 Overview of controls
- 4.2 Switching the appliance ON/OFF
- 4.3 Turning the space heating ON
- 4.4 Programming the heating control unit
- 4.5 ZBR..-3A appliances with DHW tank: Setting the DHW temperature
- 4.6 ZWB..-3A appliances (combi boilers): Setting the DHW temperature
- 4.7 Setting manual summer mode
- 4.8 Setting frost protection
- 4.9 Activating the key pad lock
- 4.10 Display codes
- 5 Thermal disinfection
- 6 Energy saving tips
- 7 Troubleshooting
- 8 Maintenance
- 9 Environmental responsibility/disposal
- 10 Quick reference
- Index

Quick reference | 29
6 720 806 993 (2013/03)
Greenstar
10 Quick reference
Startup
Turning space heating ON
Heating control
Set outdoor reset heating control unit to
the relevant heating curve and operating
mode or set room thermostat to the
desired temperature.
Key pad lock
DHW temperature
ECO button lit – Economy mode.
ECO button not lit – Comfort mode.
Frost protection
m
a
x
1
2
3
4
5
6
6 720 613 896-05.1O
eco
reset
6 720 641 933-53.1O
max
1
2
3
4
5
6
max
1
2
3
4
e
6
min
max
1
2
34
5
6
max
1
2
3
4
e
6
eco
reset
6 720 641 933-83.1O
min
DANGER: Danger of
scalding!
▶ In normal operation,
it is recommended to
limit the DHW
temperature to
122 °F (50 °C) to limit
the risk of scalding.
6 720 641 933-55.1O
max
1
2
34
5
6
reset
eco
max
1
2
3
4
e
6
eco
reset
max
1
2
3
5
6
max
1
2
3
4
e
6
6 720 641 933-68.1O
min