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Siemens Building Technologies
Fan coil controller for wall mounting ACR12
CE1N3573E
HVAC Products
17.08.2001
Project engineering
and wiring notes
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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.
Safety instructions:
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).
Important
Important
!
Safety check
Important
!
Important applica-
tion instruction:
Recommended
relais type:
