Technical Data; Function; Personnel Qualification; Dimensions - Helios Fdr Installations- Und Betriebs-Anleitung

Installation and Operating Instructions
EN
CHAPTER 2

TECHNICAL DATA

Differential humidity control – FDR
The differential humidity control is designed for use in the internal (control) or external area
(external sensor). Do not expose the unit to direct sunlight.
Any use other than the intended use is not permitted!

1.9 Function

– Control with integrated sensor for measuring the temperature and relative humidity of
the building interior.
– External sensor for measuring the temperature and relative humidity of the outside of
the building.
The ventilation unit only operates if the conditions or limit values for dehumidification are
met:
– The relative humidity of the room air does not rise above the adjustable limit value.
– The temperature of the room air does not fall below adjustable limit value.
If the conditions for dehumidification are not met, fresh air will flow through the room at
certain, adjustable time intervals.
If necessary, the ventilation can be activated by pressing an external push-button for an
adjustable period of time.

1.10 Personnel qualification

The electrical connections and commissioning as well as installation work may only be
carried out by authorised electricians.
2.1 Technical data
FDR
Power supply
Outputs
Inputs
Measurement values
Temperature range
Protection category
Protection class
Switching power supply
Power supply

2.2 Dimensions

Control
Control
12 V DC (SELV) via additio-
nal switching power supply
2x relay potential-free
max. 230 V~ 6 A, cos phi 0.95
1x 0-10 V output
max. 2 mA / 0-100 %
1x open collector
max. 50 V / 50 mA
Push-button input 230 V AC
2-wire bus line (SELV) to the

external sensor

Relative humidity and temperature
0...+40 °C
IP20
II
230 V~, 50 Hz
Fig2
External sensor
2
External sensor
2-wire bus line (SELV) to the
control
2-wire bus line
–
-30...+55 °C
IP52
III
76
Fig3