Fan Forced Mode With Ram 713 Fan Coil - Theben FCA 2 Manual

Fan Coil Actuator FCA 2

6.8.2 Fan forced mode with RAM 713 Fan Coil

This function allows the fan stage to be preset manually, either by using the button on the RAM
713 Fan Coil or via the bus.
It can be time-controlled or permanently activated or blocked on the Operation (RAM) parameter
page.
Table 69: Button operation RAM 713 Fan Coil
Button push Standard
1 Fan off
2 Fan stage 1 received forced actuating value
3 Fan stage 2 received forced actuating value
4 Fan stage 3 received forced actuating value
5 Auto
Comment: Forced operation can be triggered by 1 or 0.
See Change over fan between auto and forced parameter on the General parameter page.
With fan control = standard:
The receiving forced actuating value (object 8) is taken over as fan stage between 0 and 3.
With fan control = 0-10 V:
The receiving forced actuating value (object 8) is taken over as setpoint.
Transmission behaviour in forced operation = 1:
Object 17 (RAM 713 FC) sends 1 to the fan coil actuator (object 15) thereby triggering forced
operation. Object 16 (RAM 713 FC) sends the actuating value (to object 8) for the selected fan
stage in accordance with the set threshold.
Forced operation can be ended with a telegram to object 15, and automatic operation can be
restored.
Transmission behaviour in forced operation = 0:
Object 16 (RAM 713 FC) sends the actuating value (to object 8) for the selected fan stage in
accordance with the set threshold, and thus triggers forced operation.
Object 15 is reset to 0.
Comment: As long as it was not sent to object 15, the reception of a forced actuating value on
object 8 is sufficient to trigger forced operation.
Forced operation can be ended with a telegram to object 15, and automatic operation can be
restored.
Important with standard fan control: The received forced actuating value should always be
higher than the threshold setting of the fan coil actuator.
Updated: Feb-16 (subject to changes)
0-10 V
Fan off
Auto
LED
OFF
1
2
3
Auto
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