Freeze Protection; Settings; Display And Controls - STIEBEL ELTRON accelera 220 e Operation And Installation Manual

OPERATION

Settings

4.2.2 Ambient temperatures above the application limit
The safety equipment switches the appliance off if the upper ap-
plication limit is exceeded.
Following a cooling time of several minutes, the appliance is
switched back on automatically. The appliance is switched off
again if the ambient temperature rises above the permissible tem-
perature value again.
 To guarantee fault-free operation of the appliance, make sure 
you operate the appliance within its application limits (See
16.3, "Data table", pg. 33).
4.3

Freeze protection

The appliance activates a freeze protection function if the integral
sensor in the DHW tank detects a temperature below 50 °F (10 °C).
The appliance then heats the water in parallel mode by using both
the heat pump and the electric booster element. The heat pump
and electric booster element switch off once the temperature de-
tected by the integral sensor is more than 65 °F (18 °C).
5. Settings
5.1

Display and controls

e l e c t r o n i c c o m f o r t
14
13
12
11
10
9
8
1 Actual temperature
2 Set temperature 1
3 Set temperature 2 active
4 Plus key
5 Minus key
6 Service/error symbol
7 Defros t mode
8 Heat pump
9 Electric booster element
10 Freeze protection
11 Rapid heating key
12 Amount of mixed water display (l
Actual temperature display, upper tank section /
Set temperature 1 display
Set temperature 2 display
Fault code display
13 Menu key
14 Amount of mixed water
12 | Accelera® 220-300 E
1
2
c c o m f o r t o m f o r t
3
4 4 4 4
5
6
7
40 °C /gal 104 °F)
@ @
The "electric booster element" and "heat pump" symbols are dis-
played when these appliance components are running.
Note
The back-light of the display will illuminate for 15 seconds
after pressing any button.
Service/fault symbol
Note
Notify your installer if the service/fault symbol appears
on the display. Continuous illumination of the symbol
indicates that the fault is not preventing appliance op-
eration.
A fl ashing service/fault symbol indicates that the water
is not being heated and that it is essential you notify
your contractor.
5.2 Settings
In standard display mode, the display shows the current amount
of mixed water.
Note
15 seconds after every adjustment, the appliance auto-
matically switches back to the standard display and saves
the set value.
With the menu key, all information and
setting options are called up in sequence.
The relevant symbol appears with each
setting.
5.2.1 Amount of mixed water display (standard display)
The currently available amount of mixed
water at 104 °F (40 °C) when mixed with
59 °F (15 °C) cold water is shown.
If there is no usable hot water in the tank,
the display shows "--".
DHW demand for Amount of mixed water at (104°F/40 °C)
Bath 32-40 gal (120-150 l)
Shower 9-13 gal (30-50 l)
Hand washing ½-1½ gal (2-5 l)
The amount of mixed water that can be achieved depends on the
set point temperature.
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