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
Thermal disinfection | 23
6 720 806 993 (2013/03)
Greenstar
Thermal disinfection covers the DHW system including the taps. For solar DHW
tanks, the solar portion of the tank is not covered.
Performing a manual disinfection of the DHW tank and system
▶ Close all DHW taps.
▶ Advise occupants of the risk of scalding if no tempering valve is installed.
▶ Set the time and DHW temperature accordingly on the heating control unit with
DHW program.
▶ Set any DHW recirculation pump to continuous operation.
▶ Turn DHW thermostat clockwise to max (approx. 158 °F (70 °C)).
Fig. 13
Thermal disinfection can also be carried out automatically and on a
regular basis; see operating instructions for the heating control unit
included in the scope of delivery.
DANGER: Risk of scalding!
Hot water can result in severe scalding.
▶ Carry out thermal disinfection only outside the normal hours of use.
▶ The water in the tank will take a while to cool down to the set DHW
temperature as a result of heat loss. Be aware that, after thermal
disinfection, the DHW may be hotter than the set temperature.
▶ If the thermal disinfection feature is activated have a DHW
tempering valve installed.
6 720 614 156-16.1O
max
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