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6.3 Relay operation
Replaces the use of a BDEZ type pressure switch
Ventilation fault
TEDH/V F400 ECOWATT
®
three-phases
INVENTO
17 18 19
NO
COM
NC
Relay fault
Ventilation fault
indicator light
Normal running
indicator light
Power supply
Regardless of the principle of operation of the roof fan, the relay operates in the following manner:
Unit status
Relay status**
Invento
"Normal" operation (COP, CAV, VAV)
NO
18-19
Power supply cut off
NC
17-18
On / Off switch open - the wheel is stationary but power is on to the controller.
NC
17-18
Loss of phases* - possibility that during a loss of phase the wheel continues to turn.
NC
17-18
*If the controller detects a fault several times, including a phase problem twice, the unit will not restart automatically.
** NO: Normally open, NC: Normally closed.
6.4 Smoke extraction operation
The TEDH/V F400 ECOWATT
®
is approved for extraction of hot gases and smoke in the event of a fire.
This mode of operation is automatic and does not require any setting: In the case of extraction of gas at a
temperature > 200°C, the roof fan will automatically switch to high speed with its internal thermal protec-
tions inhibited.
The smoke extraction mode must be triggered manually with a BDRA type control unit.
The CAV/VAV/COP modes are no longer accepted.
TEDH/V F400 ECOWATT
®
three-phases
INVENTO
1 2
Thermocontact
N/F
11
22
33
12
21
34
Factory fitted and wired
onto the unit
BDRA
Accessory not provided
Fire
+24V