STIEBEL ELTRON Accelera 300 E - Manual (Page 12)

OPERATION
Settings
12 | Accelera® 220-300 E www.stiebel-eltron-usa.com
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.
4.2.1 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 < 10 l.
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.
4.2.2 Actual temperature display
In the mixed water menu, press the
menu key once to get to the actual tem-
perature menu.
The current actual temperature in
the upper section of the DHW tank is
shown. This largely corresponds to the
outlet temperature.
4.2.3 Set temperature 1
Note
For reasons of legionella prevention, never set the DHW
temperature lower than 124°F/50°C).
The set temperature 1 is the DHW temperature to which the ap-
pliance regulates if no external signal transmitter is connected
and active. Set temperature 1 is set to 131°F/55°C at the factory.
In the actual temperature menu, press
the menu key once to get to the menu
for set temperature 1.
The set temperature 1 symbol appears.
Adjust set temperature 1 from 69 to
149°F / 20.5 to 65°C using the plus and
minus keys.
Note
Another way to adjust set temperature 1 is to press the
plus or minus key when in standard display (amount of
mixed water).
Frost protection
If the set temperature is set to less than
69°F/20.5°C, only frost protection re-
mains active. The water heater will not
run.
4.2.4 Set temperature 2
Note
For reasons of legionella prevention, never set the DHW
temperature lower than 124°F/50°C).
Set temperature 2 is the DHW temperature to which the appliance
regulates if an external signal transmitter is connected and active.
In the set temperature 1 menu, press
the menu key once to get to the menu
for set temperature 2.
The set temperature 2 symbol appears.
The display of set temperature 2 is de-
noted with an "N".
Adjust set temperature 2 from 69 to
149°F / 20.5 to 65°C) using the plus and
minus keys.
Operation with external signal transmitter (240 V input)
The connection of the heat pump to an external signal offers the
possibility of heating water to a raised temperature set point
during periods when electric rates are favorable, for example
during times when PV power is available or low tariff utility rates
are in effect.
The external signal may be offered by a PV system or low tariff
transmission of a utility.
This set temperature 2 is activated when a phase (LF signal) is
present at terminal X0/LF (See 10.3.1, “Connection with external
signal transmitter”, pg. 20). While activated, set temperature 2
replaces the standard set DHW temperature ("set temperature 1").
If set temperature 2 has been activated by the external signal
transmitter, this set temperature will then be active for at least
20 minutes. If the signal remains active after those 20 minutes
passed, the compressor will run until the LF signal ends. If not,
the selected set temperature 1 is activated again.