Bosch Greenstar ZBR16-3A Operating Instructions Manual page 28

28 | Operation
ECO button
Pressing and holding the ECO button until it lights up switches
between Comfort mode and Economy mode.
•
Comfort mode (default setting)
The appliance is continually maintained at the set temperature.
Consequently, DHW draws are immediate, however the
appliance may run even if no DHW is being drawn.
•
Economy mode, ECO button lights up
– DHW is only generated when DHW is drawn.
– On demand: Quickly open and close a DHW tap to signal the
appliance to heat to the selected temperature. After a short
wait DHW will be available.
The DHW on demand signal allows maximum gas
and water savings.
6 720 644 013 (2011/02)