Temperature / Pressure Relief Valve; Decalcification; Replacement Of The Sacrificial Anode; Plumbing Troubleshooting - Stiebel Eltron SB 300 E Mode D'emploi

OPERATION

Plumbing troubleshooting

Appliance compo- Care and maintenance tips
nents
Casing Use a damp cloth to clean the casing sections. Never
use abrasive or corrosive cleaning agents.
DHW tank The DHW tank is equipped with a sacrificial anode
and wear indicator to safeguard it against corrosion.
The wear indicator should be checked regularly. Oth-
erwise there is a risk of corrosion.
Electric resistance Check the condition of the electric resistance heater.
heater This will extend the expected life of the element.
6.1

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.
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 filling of the
unit. When water flows from the relief line at full stream, the tank
is filled, and the T&P valve can be returned to its normal position.
6.2 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 inter-
vals. Follow the manufacturers instructions for solvent use. The
hot water storage unit needs to be emptied to do this process. The
clean-out port cover must be removed and sediments on the tank
bottom must be flushed.
6.3 Replacement of the sacrificial anode
Depending on the composition of the tap water, an inspection of
the sacrificial anode at timely intervals is recommended. With
heavy wear, an original equipment replacement anode must be
installed to protect the inner container from corrosion. An inspec-
tion should be performed at least once per year.
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7. Plumbing troubleshooting
Problem Cause
Inadequate Shut-off valve is not com-
water pressure pletely open.
OR
Cold or hot water line is ob-
structed.
Hot water flow Indirect boiler setpoint tem-
inadequate perature is too low.
Recommended 176–185 °F
(80–85 °C).
OR
Heat exchanger is calcified.
Hot water Program selection at the
storage tank not heater control is not properly
being heated selected.
Faucet flow rate Aerator at the extraction
inadequate point is blocked.
Hot water sup- Flow rate is too high. Rec-
ply exhausted ommended 2.6–3.9 gpm
too quickly (9.8–14.7 l/min).
7.1 Notifying a qualified contractor
If you cannot remedy a failure, notify your qualified contractor. To
facilitate and speed up your request, provide the serial number
from the type plate (000000-0000-00000). The type plate can be
found on the left, above the "DHW outlet" connection.
7.1.1 Sample type plate
SB 300 E
M-NO.: 234110
S-NO.:
Technical data
Datos técnicos
Données techniques
Volume:
Volumen:
Volume:
293 l / 77.4 gal
Supply:
Alimentación:
Alimentation:
220-240 V AC, 60 Hz
SINGLE PHASE L-L ONLY
Power:
Potencia:
Puissance:
3 kW / 10,239 BTU/h
Max. pressure:
Presión máxima:
Pression max:
1 MPa / 145 PSI
Testing pressure:
Presión de prueba:
Pression d'essai:
1.5 MPa / 217 PSI
Standby loss:
Pérdida de calor:
Pertes en mode de veille:
2.8 kWh/24h
Remedy
Open shut-off valve. Clean or
replace pipes.
Set boiler to recommended
temperature
OR
Clean heat exchanger.
Select and set program per
instructions.
Unscrew aerator and clean.
Restrict spigot valve rate.
Made in EU
Hecho en EU
Fabriqué en EU
Heat exchanger
Intercambiador de calor
Échangeur de chaleur
Max. pressure:
Presión máxima:
Pression max.:
1 MPa / 145 PSI
Heating surface:
Superficie de calefacción:
Surface de chauffe:
2 2
1.5 m / 16.1 ft
Volume:
Volumen:
Volume:
9.5 l / 2.37 gal
Max. temp.:
Temperatura máxima:
Temp. max.:
95 °C / 203 °F
4010487
Conforms to UL STD. 174
Certified to CAN/CSA STD. C22.2 No.110-94
SB 300-400 E | 5