Instructions / Assembly

OPERATION
Safety
8 | Accelera® 220-300 E www.stiebel-eltron-usa.com
- Operating the appliance outside the application limits (See
17.3, “Data table”, pg. 35)
- Interrupting the power supply, as without power supply the
appliance is not protected against corrosion
2.3 General safety instructions
Only qualified contractors should carry out the electrical work and
installation of this appliance. Qualified contractors are responsible
for adherence to all applicable regulations.
Operate the appliance only when fully installed and with all safety
equipment fitted.
!
WARNING Injury
The appliance may be used by children aged 8 and up
and persons with reduced physical, sensory or mental
capabilities or a lack of experience and know-how,
provided that they are supervised or they have been
instructed on how to use the appliance safely and have
understood the resulting risks. Children must never
play with the appliance. Children must never clean the
appliance or perform user maintenance unless they are
supervised.
WARNING Electrocution
Contact with live components presents a threat to life.
Damage to the electric insulation or to individual com-
ponents may result in a threat to life.
f If there is damage to the insulation, disconnect the
power supply and arrange a repair.
All work on the electrical installation must be carried
out by a qualified contractor.
WARNING Scalding
The water in the DHW tank can be heated to tempera-
tures in excess of 149 °F (65 °C). There is a risk of scald-
ing at outlet temperatures in excess of 110 °F (43 °C).
f Ensure you do not come into contact with the
water when discharged.
WARNING Burns
Touching hot components can lead to burns.
When working on hot components, always wear pro-
tective working clothing and safety gloves.
The pipework connected to the DHW outlet of the appli-
ance can reach temperatures in excess of 149 °F (65 °C).
WARNING Burns
In the case of a fault, temperatures up to the high limit
safety cut-out temperature limit can occur (See 17.3,
“Data table”, pg. 35).
WARNING Scalding
The appliance is filled with refrigerant at the factory.
In case of leaking refrigerant, avoid coming into contact
with the refrigerant or inhaling the released vapors.
Ventilate the rooms affected.
!
CAUTION Injury
Never place any objects on top of the appliance. If ob-
jects are left on the appliance, noise emissions may
increase due to resulting vibrations, and the objects
could fall and cause injury.
WARNING Electrocution
Never operate the appliance when the casing is open
or without a cover.
!
CAUTION
To reduce the risk of excessive pressures and tempera-
tures in this water heater, install temperature and pres-
sure protective equipment required by local codes and
no less than a combination temperature and pressure
relief valve certified by a nationally recognized testing
laboratory that maintains periodic inspection of pro-
duction of listed equipment or materials, as meeting
the requirements for Relief Valves and Automatic Gas
Shutoff Devices for Hot Water Supply Systems, ANSI
Z21.22. This valve must be marked with a maximum set
pressure not to exceed the marked maximum working
pressure of the water heater. Install the valve into an
opening provided and marked for this purpose in the
water heater, and orient it or provide tubing so that
any discharge from the valve exits only within 6 inches
above, or at any distance below, the structural floor,
and does not contact any live electrical part. The dis-
charge opening must not be blocked or reduced in size
under any circumstances.
!
CAUTION
Hydrogen gas is produced by this heater in a hot water
system that has not been used for a long period of time
(2 weeks or more). Hydrogen gas is extremely flamma-
ble. To reduce the risk of injury under these conditions,
it is recommended that the hot water faucet be opened
for several minutes at the kitchen sink before using any
electrical appliance connected to the hot water system.
When hydrogen is present, there will probably be an
unusual sound such as air escaping through the pipe as
the water begins to flow. There should be no smoking
or open flame near the faucet at the time it is open.
!
Material losses
Only operate the appliance when the DHW tank has been
filled.
!
Material losses
If you disconnect the appliance from the power supply, it
is no longer protected against frost.
f Do not interrupt the power supply to the appliance.
!
Material losses
Never cover this appliance. Covering the air intake or air
discharge leads to a reduced air supply. If the air supply
is restricted, the operational reliability of the appliance
cannot be guaranteed.
!
Material losses
Heating liquids other than potable water is not permitted.