Warranty - Exclusion Of Liability - Helios EDTW Notice De Montage Et D'utilisation

Differential temperature controller EDTW
Fig. 1: Cable gland position
Fig. 2a: Removing sxrew covers
Fig. 2b: Removing facia
Fig. 2c: Removing mounting frame
Fig. 2d: Potentiometer for setting the minimum speed
3. Feed both cables through these glands.
4. Fix the wall box to the wall. Ensure that the flange
of the mounting frame fits flush to the finished
surface of the wall (see fig. F3).
5. Re-connect the earth lead to the wall box.
Installation of the sensors
Using the two clips supplied, mount the temperature
sensors horizontally, without touching the wall or
ceiling.
• Mount the sensor with the 10 cm cable in the high
level position.
• Mount the sensor with the 1 m cable in the low
level position suitably protected.
• Install the cables in closed conduit, leaving the other
ends ready to wire into the controller.
Wire the controller electrical connections
1. Mount the isolation switch in accordance with the
manufacturers instructions.
2. Wire the controller to the isolation switch and the
fan as shown in the appropriate figure F1.
3. Connect the sensor cables to the high and low
sensor terminals.
4. Connect any remaining fans in parallel.
5. Refit mounting frame to metal wall box.
6. Refit the facia to the mounting frame.
7. Refit the screw covers.
Connection to the main supply
1. Ensure power supply is isolated and fuses are
removed.
2. Route the cable from the isolating switch to the
point of connection to the power supply.
3. Make all connections within the isolating switch in
accordance with the manufacturerers instructions.
4. Follow all local regulations make connection at
point of power supply.
5. Make a final check to ensure all earth points are
connected and all covers have beed correctly
replaced on the fan, controller and isolating
switch.
6. Replace all fuses, and switch on the power supply.
7. The minimum speed (min. voltage) can be set at
the potentiometer (fig. 2d). If operated manually (9)
the speed/temperature knob is to be turned to mi-
nimum. The minimum speed at the potentiometer
is to be set in such a way, that the fan starts reliab-
ly also with counter pressure after power failure.
MAINTENANCE OF THE CONTROLLER
Cleaning
1. Before cleaning isolate the controller completely
from the power supply.
2. Wipe the cover carefully with a clamp cloth.
3. Dry thoroughly.
4. Ensure ventilation slots are free from obstructions
at all times.
Attention !
• Never immerse the controller in water or other
liquids.
• Never use solvents to clean the controller.
• Apart from cleaning, no other maintenance is
required.
ACCESSORIES, CONTROLLERS, SWITCHES
The use of accessories not offered or recommended
by HELIOS is not permitted. In case of damage any
warranty claim may be invalid.

WARRANTY - EXCLUSION OF LIABILITY

If the preceding instructions are not observed all
warranty claims are void. The Helios warranty is limited
to the material and workmanship of the product.
CERTIFICATES
If installed correctly the product complies with
relevant European standards and regulations as at
the time of ist manufacture.