2 | SBB S & SBB PLUS SOLAR STORAGE TANKS WWW.STIEBEL-ELTRON-USA.COM
2. SAFETY INSTRUCTIONS
ENGLISH
General Information
Read this entire manual. Failure to follow all the guides,
instructions and rules could cause personal injury or property
damage. Improper installation, adjustment, alteration, service and
use of this unit can result in serious injury.
This unit must be installed by a professional installer. The
installation must comply with all national, state and local plumbing
and electric codes. Proper installation is the responsibility of the
installer. Failure to comply with the installation and operating
instructions or improper use voids the warranty.
Save these instructions for future reference. Installer should leave
these instructions with the consumer.
Service of the unit must be performed by a qualifi ed service agency.
Never set the solar loop pressure greater than potable (domestic)
water supply pressure. If the potable water pressure is too low, a
booster pump may be needed to assure that it exceeds the required
solar loop pressure.
If you have any questions regarding the installation, use or operation
of this water heater, or if you need any additional installation
manuals, please call our technical service line at 800-582-8423
(USA and Canada only). If you are calling from outside the USA or
Canada, please call USA 413-247-3380 and we will refer you to a
qualifi ed Stiebel Eltron service representative in your area.
THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU
TO POTENTIAL PERSONAL INJURY HAZARD. OBEYALLSAFETY
MESSAGES THAT FOLLOW THIS SYMBOL TO AVOID POSSIBLE INJURY OR
DEATH.
Safety Instructions
WARNING: NEVER INSTALL ANY VALVES OR SHUTOFF DEVICES IN
THE PIPING BETWEEN THE COLLECTORS AND THE SAFETY VALVE.
THE SAFETY VALVE IS ACTUATED AT 87 PSI PRESSURE.
DANGER: WATER TEMPERATURES OVER 125°F CAN CAUSE SEVERE
BURNS INSTANTLY OR DEATH FROM SCALDING. A HOT WATER
SCALDING POTENTIAL EXISTS IF THE THERMOSTAT ON THE UNIT IS SET
TOO HIGH. HOUSEHOLDS WITH SMALL CHILDREN, DISABLED OR ELDERLY
PERSONS MAY REQUIRE THAT THE THERMOSTAT BE SET AT 120°F OR
LOWER TO PREVENT POSSIBLE INJURY FROM HOT WATER.
DANGER: SETTING THE MAXIMUM TANK TEMPERATURE HIGHER
THAN 140°F AT THE CONTROL UNIT IS PERMISSIBLE ONLY IN
CONJUNCTION WITH A THERMOSTATICALLY-CONTROLLED DHW MIXING
VALVE. OTHERWISE THERE CAN BE A RISK OF SCALDING AT THE DRAWOFF
POINT.
CAUTION: ALL SENSOR WIRING SHOULD BE RATED FOR EXPECTED
TEMPERATURES AND MUST BE PROTECTED FROM DEGRADATION
AND ELECTRICAL INTERFERENCE.
Solar Loop
Use only a mixture of 50% GRAS (food grade) Propylene Glycol and
de-ionized water. (Heat Exchanger type SW, AWWA Fluid Class II see MSDS for handling instructions.)
WARNING: FLUID MAY BE DISCHARGED AT HIGH TEMPERATURE
AND/OR PRESSURE. THERE CAN BE A RISK OF SCALDING AT THE
DISCHARGE POINT.
NO OTHER FLUID SHALL BE USED THAT WOULD CHANGE THE ORIGINAL
CLASSIFICATION OF THIS SYSTEM. UNAUTHORIZED ALTERATIONS TO THIS
SYSTEM COULD RESULT IN A HAZARDOUS CONDITION.
WWW.STIEBEL-ELTRON-USA.COM SBB S & SBB PLUS SOLAR STORAGE TANKS | 3
3. OPERATION AND SERVICE
3.1 Start-up
The hydronic back-up boiler (see Figure 5) and solar storage
tank (see Figures 4 & 5), constitute a functional unit. Hot water is
generated throughout the year by the solar collectors (see Figure 4).
Supplemental heat is provided by the back-up boiler when there is
insuffi cient solar energy available (see Figure 5).
The entire heater and hot water system must be fi lled with water
and have adaquate air ventilation. Please refer to the solar
collector’s and the boiler’s installation instructions.
4. MAINTENANCE AND CLEANING
Routine care and maintenance extends the life expectancy and
operating safety of the hot water storage unit. The outer casing
should be cleaned with a slightly damp cloth and commercially
available neutral cleaning agent. This should be done on a regular
basis.
4.1 Temperature / Pressure Relief Valve
WARNING: THE T&P RELIEF VALVE IS DESIGNED TO RELIEVE BUILT
UP PRESSURE IN THE WATER HEATER. FLUID MAY BE DISCHARGED
AT HIGH TEMPERATURE AND/OR PRESSURE. SCALDING HOT WATER
INJURIES CAN OCCUR.
NOTICE: THE WATER HEATER AND T&P RELIEF VALVE SHOULD BE
INSTALLED AND PIPED IN AND TO AN AREA WHERE WATER DISCHARGE
AND LEAKING WILL NOT CAUSE PROPERTY DAMAGE.
The proper function of the Temperature / Pressure (“T&P”) relief
valve is required to prevent damage to the hot water storage unit.
The T&P valve needs to be open during cold-water addition. The
water has to fl ow from the relief line at full stream.
4.3 Replacement of the Sacrifi cial Anode
Depending on the composition of the tap water, an inspection
of the sacrifi cial anode (Pos. 1, Figure 1) at timely intervals is
recommended. With heavy wear, an original equipment replacement
anode must be installed to protect the inner container from
corrosion. An inspection should be performed at least once a year.
4.2 Decalcifi cation
With hard tap water, a deposit of scale will form on the inside of
the storage unit. Based on professional experience, it is necessary
to decalcify with commercially available solvents at timely intervals.
Follow the manufacturers instructions for solvent use. The hot water
storage unit needs to be emptied. The inspection cover must be
removed and sediments on the tank bottom must be fl ushed.
4 | SBB S & SBB PLUS SOLAR STORAGE TANKS WWW.STIEBEL-ELTRON-USA.COM
5. FAILURES – CAUSES – CORRECTION
FailuresCausesCorrection
Inadequate water pressureShut-off valve is not completely open.
Cold or hot water line is obstructed.
Hot water flow inadequateBoiler temperature is set too low.
Recommended 176 to 185 °F / 80 to 85 °C.
Heat exchanger is calcified.
Hot water storage tank not being heatedProgram selection at the heater control is not
properly selected.
Outlet quantity inadequateAerator at the extraction point blocked.Unscrew aerator and clean.
Hot water supply exhausted too quicklyFlow rate too high. Recommended 2.6-3.9 gal./min.