Instructions / Assembly

OPERATION
Register your product
www.stiebel-eltron-usa.com Accelera® 220-300 E | 11
ENGLISH
3. Register your product
Note:
You must register this product within 90 days of pur-
chase on our web site in order to activate the standard
warranty or to be eligible for the extended warranty.
Go to our web site at www.stiebel-eltron-usa.com and
click on register your product.
Before beginning the registration process, we suggest that
you gather the necessary information which will be as
follows:
000000-0000-00000
1 Serial number on the type plate
Type, Example: Accelera 220 E (from the label that is on the
unit)
Number listed after “Nr.”
Place of Purchase
Purchase Date
First & Last Name
Email address
Physical Address
Phone Number
Installation Date
If you have any questions concerning the registration process
or warranty options, please contact Stiebel Eltron USA direct-
ly at 800.582.8423.
4. Appliance description
The appliance is designed for indoor installation. The appliance
recirculates ambient air and does not require outdoor air. The
appliance extracts heat from the ambient air. This heat is utilized
to heat the water in the DHW tank with added electric power. The
amount of electric energy and time required to heat-up the DHW
depends on the temperature and humidity of the ambient air.
This heat extraction results in a drop in the ambient temperature
inside the installation room by between 2 °F (1 °C)and 5.5 °F (3 °C).
The appliance also extracts moisture from the air, which turns into
condensate. The condensate is drained from the appliance via the
condensate drain.
When a hot water draw-off point is opened, the hot DHW is pushed
out of the appliance by the in-flow of cold DHW.
To protect against corrosion, the inside of the DHW tank is coated
with special enamel and is additionally equipped with an im-
pressed current anode.
The electronic control unit makes energy saving adjustments eas-
ier. Subject to the power supply and usage pattern, the water is
heated up automatically to the set temperature.
4.1 Heat pump operating principle
A hermetic circuit within the appliance contains refrigerant (See
17.3, “Data table”, pg. 35). This refrigerant evaporates at low
temperatures and collects heat from the ambient air.
In the evaporator, the refrigerant changes from its liquid into its
gaseous state. A compressor draws in the gaseous refrigerant
and compresses it. This increase in pressure raises the refrigerant
temperature.
The compression process requires electrical energy. The energy
(motor heat) is not lost, but is discharged to the downstream con-
denser. There, the refrigerant indirectly transfers heat to the DHW
tank and the liquid refrigerant is routed to a filter dryer. An ex-
pansion valve reduces the still prevalent pressure. The refrigerant
is routed to the two-flood evaporator and the cycle starts again.
Note
In the event of an interruption of the power supply, the
compressor is blocked from operating for at least one
minute. The electronic control board (ECB) delays elec-
tronic starting for one minute while the appliance goes
through its initializing process.
If the compressor subsequently fails to start, it may be
blocked by additional safety devices (Klixon and/or high
pressure switch). If the compressor is switched off due
to the Klixon, the pressure difference between the high
and low pressure sides of the refrigerant circuit may be
the cause. When the pressure difference is equalized
(approximately 5 minutes), the compressor turns on. If a
tripped high pressure switch caused the blocking of the
compressor, this may be due to a failed thermostat or
high ambient air temperature. After the power supply has
been re-established, the appliance continues to operate
with the parameters that were selected before the power
supply was interrupted.
4.2 Heating the DHW tank
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1 Dome sensor
2 Integral sensor
The appliance is equipped with two temperature sensors.
- The dome sensor captures the water temperature in the
upper section of the tank.
- The integral sensor is a temperature sensor affixed over the
entire tank height. The integral sensor determines the aver-
age tank temperature.