Helios AIR1-CO DX-Serie Montage- Und Betriebsvorschrift Seite 35

Installation and Operating Instructions
ATTENTION
Change-over-unit AIR1-CO DX
262 Change-over-unit DX for AIR1 XH and RH units
The accessory AIR1-SM DX - control module DX (art no 40 408) must be acquired for connecting the unit to the on-
site cooling system for AIR1 ventilation units in series XC, XH and RH
1. Apply sealing strips where the change-over-unit DX is joined together with the AIR1 unit or the external auxiliary
heater (see Fig.16).
2. If necessary, remove screw covers on the AIR1 unit before installing the change-over-unit DX (see Fig.17).
3. Remove the temperature sensor from the supply air side of the AIR1 unit or the external auxiliary heater. Then attach
the change-over-unit DX and the AIR1 unit or external auxiliary heater (see Fig.18).
Temperature sensor
4. Establish the electrical connection between the AIR1 unit and the change-over-unit DX.
– If there an external auxiliary heater is not used:
Use the depicted connection cable (see Fig.19) to connect the change-over-unit DX and the AIR1 unit.
Fig16
Fig17
Fig18
14
EN
Fig19