6 720 800 844 (2012/02)
Key to symbols and safety instructions | 7
1.2 Safety instructions
B These instructions must be observed to
ensure correct operation.
B Install and commission the heating appliance
and all accessories in accordance with the
instructions provided.
B This accessory must only be installed by
suitably qualified installers.
B Only use these accessories in conjunction
with the heating appliances listed. Follow the
connection diagram!
B Do not connect this accessory to the 230 V
mains electricity supply.
B Prior to the installation of this accessory:
Isolate the heating appliance and all other
BUS subscribers from the power supply
(220 to 240 V AC).
B For wall mounting: never install this accessory
in wet areas.
B Instruct customers about the functions and
operation of the accessories.
B Risk of scalding during thermal disinfection:
Supervise short periods of operation with
water temperatures over 60 °C or fit a
thermostatic DHW mixer.
B When there is a risk of frost, leave the heating
appliance switched on and follow the frost
protection information.
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