Zbr; Zwb; Setting The Dhw Temperature - Bosch ZBR16-3A Installation And Service Instructions Manual

7.6 ZBR..-3A appliances (heating boilers)
with DHW tank: Setting the DHW
temperature
B Set the DHW temperature on the DHW thermostat
The set DHW temperature flashes on the display for
30 seconds.
3 4
2 5
1
6
max
Fig. 57 Set the DHW temperature (heating boiler ZBR..-3A)
DHW thermostat
min
e
max
Tab. 25 Typical DHW temperatures for heating boiler
ZBR..-3A
WARNING: Danger of scalding!
B In normal operation, it is recommended to
limit the DHW temperature to 122 °F
(50 °C) to limit the risk of scalding.
B Install a tempering valve if running DHW
temperatures above 104 °F (40 °C).
B Only use temperatures up to 158 °F (70 °C)
for thermal disinfection (
If there is reason for concern for contamination
from bacteria such as legionella, consider
setting the DHW thermostat
(131 °F (55 °C)).
This setting ensures an economical and
comfortable DHW generation. Consult your
local water department or municipality for
further information.
Copyright (optional information)
reset
eco
4
3
e
2
1
6
max
6 720 641 933-54.1O
Typical DHW temperatures
approx. 59 °F (15 °C)
approx. 131 °F (55 °C)
approx. 158 °F (70 °C)
page 63).
to at least "e"
ECO button
The default setting is DHW priority; the ECO button is not
lit.
In order to switch between DHW tank priority and
alternating operation, press the ECO button.
.
• DHW priority
First, the DHW tank is heated up to the set temperature.
The appliance then goes into heating mode. Therefore,
it can happen that space heating is interrupted for a
while and the room temperature may drop.
DHW tank priority guarantees highest DHW comfort.
• Alternating operation
The appliance switches between space heating mode
and DHW mode. This prevents the room from cooling off
too much.
Alternating operation guarantees an even room
temperature with somewhat less DHW convenience.
7.7 ZWB..-3A appliances (combi boilers):

Setting the DHW temperature

B Set the DHW temperature on the DHW thermostat
The set DHW temperature flashes on the display for
30 seconds.
2
1
Fig. 58 Set the DHW temperature (combi boiler ZWB..-3A)
DHW thermostat
min
e
max
Tab. 26 Typical DHW temperatures for combi boiler
ZWB..-3A
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
Commissioning | 61
reset
eco
3 4 4
3
2 e
5
1
6
6
max
max
6 720 641 933-55.1O
Typical DHW temperatures
approx. 104 °F (40 °C)
approx. 122 °F (50 °C)
approx. 140 °F (60 °C)
6 720 643 068 (2011/06)
.