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FA ROTEX HPSU monobloc compact • 09/2017
4
x
Set-up and installation
Connection variant 2
Connection variant 3
Fig. 4-33 1-phase backup heater (BU9c) connection
(key, see fig. 4-32)
On connection of a backup heater with a heating ele-
ment (BUH1 / BUH3), the parameter [Function Heating
Rod]=2 must be set.
Fig. 4-34 Connection of a backup heater with a heating element
(BUH1 / BUH3) (key, see fig. 4-32)
WARNING!
Contact with a
damaged backup heater con-
nection cable
can result in an electric shock
and therefore life-threatening injuries and
burns.
Ɣ
Do not repair the backup heater's connection
cable.
Î
Always replace the entire backup heater.