ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA 300 | 25
INSTALLATION
SETTINGS
12. Settings
12.1 Adjusting the water temperature
The water temperature must only be adjusted by a
licensed installer, as the cover must be removed from
the water heater.
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1 Thermostat, heat pump operation
2 Thermostat of the booster heater
3 High limit safety cutout
The temperature is reduced by turning the thermostat
counter-clockwise.
Adjust both thermostats to the same setting.
Energy consumption will rise if the temperature
is set lower at the heat pump thermostat than
at the booster heater thermostat.
Ensure that both thermostats are adjusted to the same
setting.
Energy consumption will rise if the temperature is set
lower at the heat pump thermostat than at the booster
heater thermostat. The booster heater must be set
equal to or lower than the heat pump.
13. Water heater hand over
» Explain the functions to the user. Draw special
attention to the safety information.
» Hand these operating instructions to the user.
14. Troubleshooting
14.1 Safety equipment of the water heater
If faults develop, the safety cutouts on the water heater
will interrupt the appropriate power circuits.
14.1.1 High limit safety cut-out for booster heater
The high limit safety cut-out protects the water heater
against overheating. The booster heater is switched
off when the temperature of the water inside the tank
exceeds 203 °F (95 °C).
After removing the source of the fault, press the reset
button on the high limit safety cut-out. To do this, first
remove the water heater cover. See below.
14.1.2 Safety pressure limiter for heat pump
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1 Reset button for the high limit safety cutout
2 Reset button for the safety pressure limiter
The safety high pressure limiter shuts down the
compressor if the pressure inside the refrigerant circuit
exceeds the permissible maximum value. The safety
high pressure limiter may also trip if the water heater
is operated above its permissible limit, i.e. above an air
temperature of 107 °F (42 °C). (See above)
The safety pressure limiter also trips if the heat pump
thermostat fails.
» After the cause of the fault has been removed, reset
the safety pressure limiter by pressing the reset
button.
14.1.3 Protective motor switch - klixon
The protective motor switch will shut down the
compressor if it is overloaded because of excessive
thermal load. Remove the cause. After a short cool-
down phase, the protective motor switch will restart
the compressor automatically.
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