Safety Equipment Of The Water Heater; Initial Start-Up - STIEBEL ELTRON ACCELERA 300 Operating And Installation

INSTALLATION

INITIAL START-UP

12. Initial start-up
12.1 Initial start-up
Only approved, licensed installers may perform the initial start-up
of this water heater, and instruct the user in its operation.
» Fill and vent the water heater. For this, open the cold water
supply and one hot water tap.
» Thoroughly flush the water heater.
» Check the safety valves. Inform the user that water may drip
from the safety valve while water is being heated up.
» Connect power by resetting the circuit breaker.
This water heater must not be operated at ambient
temperatures below 6 °C (43 °F) or above 42 °C (107 °F).
12.2 Shutting down
The water heater can only be switched off by disconnecting the
power supply.
12.3 Restarting
If power has been switched off or interrupted, wait 15 minutes
before turning unit back on.
13. Settings
13.1 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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2
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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.
22 | ACCELERA® 300 HEAT PUMP WATER HEATER
13.2 Knob settings
Heat pump
125 °F
14. Water heater hand over
» Explain the functions to the user. Draw special attention to
the safety information.
» Hand these operating instructions to the user.
15. Troubleshooting
WARNING Electric shock
Always disconnect the power supply before working
on the water heater.

15.1 Safety equipment of the water heater

If faults develop, the safety cutouts on the water heater will
interrupt the appropriate power circuits.
15.1.1 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 95 °C (203 °F).
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.
15.1.2 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
Backup element
120 °F
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