2
x
Set-up and installation
19
FA ROTEX HPSU compact 308 - 02/2012
2.4.4 Connection to backup heater
This component has a separate manual attached, including among other things instructions for installation and
operation.
A1
A2
A
On-site cabling
A1
BUH connection variants 3-phase
A2
BUH connection variants 1-phase (observe country-specific
connection conditions - request from responsible power
company (EVU))!
X
Minimum clearance contact (>3 mm)
Y
Switching contactor
Fig. 2-21 Connecting optional backup heater