Mechanical Assembly; Hot Water Auxiliary Heater For Air1 Xc Units - Helios AIR1-NH WW Notice De Montage Et D'entretien

Installation and Operating Instructions
EN
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DANGER
ATTENTION
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DANGER
Hot Water Auxiliary Heater – AIR1-NH WW
2 .1

Mechanical assembly

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Danger to life due to electric shock
The installation and connection of the AIR1 unit may only be carried out by qualified specialist personnel. The electrical
connections must be carried out by a person who has proper professional training and experience in the relevant acci-
dent prevention regulations, as well as other generally recognised safety and occupational health codes, with authori-
sation to perform work on the unit.
Risk of injury due to electric shock, moving parts (fan) and hot surfaces .
– Before starting work on the unit, ensure that there is a hot water connection.
– The flow and return pipes of the hot water auxiliary heater must be insulated.
– Ensure that the multi-leaf dampers have been installed for frost protection.
The frost protection protects the hot water auxiliary heater from freezing at low temperatures. The frost protection is
activated when the temperature sensor measures +15 °C at the return (T-Frost protection).
If the temperature of the "T-Frost protection" sensor falls below +7 °C, the unit will be deactivated and the alarm will be
shown on the controller display (HMI).
The frost protection for the hot water auxiliary heater is also activated when the unit is in standby mode.

2 .1 .1 Hot water auxiliary heater for AIR1 XC units

The AIR1 unit must be fully isolated from the mains power supply before all maintenance and installation work
and opening the terminal compartment! The electrical connections must be carried out in accordance with the
following wiring diagrams and must only be carried out by qualified electricians . The electrical connection must
be fully isolated until the final assembly!
Unlatch and open the service doors. Support the door with your hand when opening (see Fig. 2).
2. Unscrew the screws of the middle service door (see Fig. 3).
3. Remove service door in direction of the terminal box (see Fig. 4).
!
Fig .3
Fig .4
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Fig .2