Thermo Technologies SBB Solar Storage Tank - Manual (Page 2)

Important Tip
Stiebel Eltron hot water heaters should only be installed or serviced by licensed installers.
These are not do-it-yourself appliances.
Please hand this Operation and Installation Manual and hand over to the home or building owner when the
installation is complete.
Operating Instructions for the User and the Technician
1. Operation and Service
1.1 Start-up
The boiler (39) and solar storage tank (30) after installation, constitute a functional unit (refer Diag. 4 and 5).
Hot water is generated throughout the year by the solar collectors.
The entire heater and hot water system must be filled with water and have good air ventilation. Please, refer to the solar
collector’s and the boiler’s installation instructions.
2. 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
2.1 Membrane Safety Valve
The proper function of the safety group (28), especially of the membrane safety valve (21) is very important to prevent
damage to the hot water storage unit. The membrane safety valve needs to be monitored for functionality during cold-
water addition (27). The water has to flow from the drip line at full stream.
The discharging water can be hot!
2.2 Decalcification
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 revisions flange at the storage bin must be dismantled
and sediments on the tank bottom must be removed.
2.3 Exchange of the Safety Anode
Depending on the composition of the tap water, an inspection of the safety anode (Pos. 1, Diag. 1) at more or less timely
intervals is recommended. With heavy wear, an original equipment replacement anode (refer Ch.6.8 and Ch.7 ) must be
installed to protect the inner container from corrosion. An inspection should be performed at least once a year.
3. Failures – Causes – Correction
Failures Causes Correction
Inadequate water pressure Shut-off valve is not completely open. Cold
or hot water line is obstructed. Open Shut-off valve. Clean or exchange
pipes.
Hot water flow inadequate Boiler temperature gauge is set too low.
Recommended 80-85°C.
Heat exchanger is calcified. Set boiler temperature gage to recommended
temperature. Clean heat exchanger.
Hot water storage tank not
being heated Program selection at the heater gage is not
properly selected. Select and set program per instructions.
Outlet quantity inadequate Perlator at the extraction point blocked. Unscrew perlator and clean.
Hot water supply too fast
exhausted Flow rate too high. Recommended 2.6-3.9
gal./min. Restrict Spigot valve rate.