Daikin ALTHERMA HT EKBUHAA6 V3, Service Manual

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External Backup Heater Kit ESIE09-08A
260 Appendix
Safety devices
Caution The heater kit air purge connection may not be used for other purposes.

Thermal protector — The heater in the heater kit is equipped with a thermal protector (activation
temperature 92°C). The thermal protector is activated when the temperature becomes too high. When
activated, the protector has to be reset on the heater of the heater kit by pressing the white button (for
access, remove the cover of the kit).
Caution

The electrical box lid must only be opened by a licensed electrician.

Switch off the power supply before opening the electrical box lid.

Pressure relief valve — In case valves are installed between the indoor unit and the heater kit and
between the outlet and the load, a pressure relief valve (field supply) in accordance with relevant local
laws and regulations, and with an opening pressure of maximum 3 bar must be installed on the water
inlet of the heater kit.