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Project engineering
and wiring notes
Important
Safety instructions:
Important
!
Safety check
Important
! Important applica-
tion instruction:
Recommended
relais type:
8/10
Siemens Building Technologies
HVAC Products
Only sensors and valves rated for AC 230 V may be used
−
The cables to the controller, external sensor (maximum length 3 m), fan valves and to
−
the electric heater carry AC 230 V and must be appropriately sized
The switching contacts for the signal inputs must be suited for low power
−
The inputs of different controllers must not be connected in parallel. This means, one
−
switching contact must be used per input
Wiring, fuses and earthing must be installed in compliance with local regulations.
−
It must be made certain that safety extra low voltage lines (SELV circuits) are clearly
separated from AC 230 V mains voltage cables
(also refer to Installation Instructions G3573X)
The connecting wires inside the controller must be placed such that no pressure will
−
be exerted on components when the controller's cover is closed
(also refer to Installation Instructions G3573X)
The controller is not approved for mounting on metallic surfaces unless the sur-
face is permanently connected to a protective conductor.
The controller must be installed by the customer according to the safety regula-
tions VDE 0700 / EN 60 335-2-73.
If the safety device is activated, the installation must be thoroughly checked
before the system is reset.
The controller may be opened only when isolated from the mains supply.
Fan with a total power consumption up to 75 VA on step 1 and 150 VA on step 2 and 3
No action needed
Fan with a total power consumption between 75 and 230 VA on step 1 and 150 and
450 VA on step 2 and 3
Check the current on the motor side when all 3 fan steps are supplied by 230 V
(maximum failure current). This current also has to respect all power limits (230
VA resp. 450 VA )
When these currants exceed the foreseen limits you have to place additional external
relais for all fan steps.
'Schrack' Type RT214730 ( 230 VAC input ; 12 Amps/250V relais contact ). For this
type a rail adapter is available (Schrack RT78625).
Fan coil controller for wall mounting ACR12
CE1N3573E
17.08.2001
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