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OPERATION
General information
4 | PSH Plus www.stiebel-eltron-usa.com
OPERATION
1. General information
The chapters "Operation" and "Special Information" are intended
for both the user and qualifi ed technicians.
The chapter "Installation" is intended for qualifi ed technicians.
Note
Read these instructions carefully before using the appli-
ance and keep them for future reference.
Pass on the instructions to a new user if required.
1.1 Safety instructions
1.1.1 Structure of safety instructions
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
1.2 Other symbols in this documentation
Note
General information is identifi ed by the symbol shown
on the left.
Read these texts carefully.
Symbol Meaning
Material losses
(appliance and collateral losses, environmental pollution)
Appliance disposal
2. Safety
2.1 Intended use
The appliance is intended for heating domestic hot water and can
supply one or more tapping points.
This appliance is intended for domestic use. It can be used safely
by untrained persons. The appliance can also be used in a non-do-
mestic environment, e.g. in a commercial setting, as long as it is
used in the same way.
Any other use beyond that described shall be deemed inappro-
priate. Using the appliance for heating fl uids other than water or
water supplemented with chemicals, such as brine, is also deemed
inappropriate.
Observation of these instructions and of instructions for any ac-
cessories used is also part of the correct use of this appliance.
!
WARNING
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 certifi ed by a nationally recognized testing
laboratory that maintains periodic inspection of produc-
tion of listed equipment or materials, as meeting the
requirements for Relief Valves and Automatic Gas Shut-
off Devices for Hot Water Supply Systems, ANSI Z21.22.
The valve must be marked with a maximum set pressure
not to exceed the marked maximum working pressure of
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 fl oor, and
does not contact any live electrical part. The discharge
opening must not be blocked or reduced in size under
any circumstances.
2.2 General safety instructions
WARNING Burns
During operation, the tap and T&P relief valve can reach
temperatures in excess of 140°F (60°C).
There is a risk of scalding at outlet temperatures in ex-
cess of 109°F (43°C).
!
Material losses
The user should insulate the water lines and the T&P
relief valve to protect them from freezing.
Note
The appliance is under pressure. During the heat-up pro-
cess, water will expand and increase in pressure. Without
an expansion vessel, the water will drip from the T&P
relief valve.
Ensure that an expansion vessel is installed in line
with the water heater.
If water continues to drip when heating is complet-
ed, please inform the installer.
!
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