User Manual

Siemens Building Technologies CA1N1879E / 11.1998
Landis & Staefa Division 3/4
9
4
FA-H3 PRT-H3
50688
50248
1
2
3
4
5
6
7
AC 24 V
4
5
FA-H3
FU-IH3 PRRA,
PRRB
50249
1
2
3
4
5
6
7
AC 24 V
8
9
FA-H3
FU-IH3 PRU
50380
1
2
3
4
5
6
7
AC 24 V
9
FA-H3
FU-IH3
PRFB-A
PRFB-V
10
All dimensions in mm
4
50687
30
4
60
75
67,5
15,5
The FU-IH3 signal converter is typically used for the FA-H3 dewpoint sensor in com-
bination with PRONTO IRC controller types PRRA, PRRB, PRU.., PRFB-A, PRFB-V or
PRT/F.
The FU-IH3 signal converter is connected to the energy hold-off input of controller types
PRRA, PRRB, PRU.., PRFB-A, PRFB-V or PRT/F, for example. If condensation is de-
tected by the FA-H3 dewpoint sensor, an LED (adjacent to terminal 7) on the FU-IH3
lights up and the built-in relay switches the controller to energy hold-off mode.
The plastic housing accommodates the printed circuit board with the electronic com-
ponents, the connection terminals and an LED to indicate condensation.
The FU-IH3 can be mounted in a surface or flush-mounting box, or located in the control
panel. Care should be taken to select a dry environment. The compact design of the
FU-IH3 signal converter makes it suitable for mounting in almost any location.
For example:
– in surface or flush mounting boxes
– inside the control panel on DIN rails or in wiring ducts
– in sill-line trunking
– in ceiling voids.
Mounting on DIN rails
40779
Flush mounting
50245
FU-IH3
Connection
dia
g
rams
FA-H3 with FU-IH3
Dimensions
FA-H3
Mounting notes
Cable binder
The FU-IH3 Signal converter