Differential temperature controller EDTW

Differential temperature controller EDTW
Differential temperature controller EDTW
INSTALLATION AND OPERTING INSTRUCTION
NO. 95 101
To ensure saftey please read the following
instructions carefully before proceeding.
RECEIPT
Please check consignment immediately on receipt
for accuracy and damage. If damaged, please notify
carrier immediately. Delay in notification may
invalidate any possible claim.
STORAGE
The storage area must be dry and free from
vibrations or variations on temperature.
Damage due to transportation, storage or improper
installation and operation and not liable for warranty.
APPLICATION
This device allows to minimise a temperature
difference between high and low temperature levels
in lange buildings. The device is supplied with two
temperature sensors.
EDTW can be used automatically or manually.
Automatic operation mode:
• If the control knob is set in the fully anticlockwise
position, minumum fan speed occurs when the
difference in high and low lovel temperatures is
3 °C or less; maximum speed occurs when the
difference is 6 °C or more.
• If the control knob is set in the fully clockwise
position, minimum fan speed occurs when the
difference in high and low level temperatures is
10 °C or less; maximum speed occurs when the
difference is 13 °C or more.
• To reduce the temperature difference at which the
fan speed will vary, turn the control knob
anticlockwise. Increase by turning clockwise.
Manual operation mode:
• To reduce the fan speed, turn the knob anticlockwise. To increase the fan speed, turn it clockwise.
Automatical and manual oparation mode:
• The fan comes on automatically at full speed for
the first 10 seconds before reverting to the speed
selected.
• The EDTW can be either surface or flush mounted
using the metal wall box supplied.
INSTALLATION OF THE CONTROLLER
These installation instructions are for the installation
of the controller when used in combination with
Helios supplied fans.
Attention! The controller must be installed to fixed
wiring. Ensure the main electrical supply matches the
rating shown on the controller casing.
• This device has to be earthed!
All installation must be carried out by a qualified
electrician.
Never work on the unit unless it is isolated from the
main supply. The installation may only be carried out
by a qualified electrician. Relevant regulations (VDE
0100 and VDE 0700 as well as TAB's of the EVU's
and UW) have to be kept up. Also attend the operation
and installation instruction and other parts in
conjunction with the EDTW.
What the installer needs
Not yet installed fan:
• A double pole isolating switch with a minimum
contact gap of 3 mm (wall or ceiling mounted).
• Suitably rated 4-core cable to connect the
controller to the fan/s.
• Suitably rated 3-core cable to connect the controller
to the main electrical supply.
1. Check that the fan electrical rating matches the
power supply.
2. Mount the fans in accordance with the instructions
supplied.
3. Route the four core cable from the controller
position to each fan.
4. Route the three core cable from controller position
to the isolator position.
Attention! If using flexible cable, suitable glands
incorporating cable clamps must be fitted to
the knockouts in the controller box. See figure 1.
Where to install the controller?
• Where ambient temperatures are not likely to
exceed 50 °C.
• If installed in a kitchen the controller must not be
mounted immediatelly above a cooker or eye
level grill.
• When intended for use in possible chemical
corrosive atmospheres, consult our customer
service.
• If installed in a shower room or bathroom the
controller and isolating switch must be situated so
that they cannot be touchen by persons making
use of the bath or shower.
Installation of the controller
Remove the cover and mounting frame.
1. Detach the facia from the mounting frame by
removing the screw covers and two screws (see
fig. 2a & b).
2. Lift the wall box away from the plactic surround.
3. Check that the electrical rating shown inside the
controller matches the power supply.
4. Check whether the electrical performance rate
agrees with the main supply.
5. Disconnect the earth wire from the wall box.
6. Make cable entry holes in the plastic and metal
boxed by removing suitable knockouts (see fig. 1)
Where to install the sensor?
• Not Where temperatures exceed 35 °C.
• Pointing away from walls or other obstructions, to
ensure adequate ventilation.
• High level sensor, above fan mounting height.
• Low level sensor, within 1 m of the controller.
• When intended for use in possible chemical
corrosive atmospheres, consult our customer
service.
Installation at the back box
Attention! Eye protection must be worn during all
drilling and chiselling oparations.
Check there are no buried ducts or cables in the
wall or obstructions on the outside e. g. eletricity,
gas, water.
WORKING WITH THE FAN
Attention! If wiring to an existing installation isolate
mains supply and remove applicable fuses prior to
any electrical procedure.
2. Feed both cables through the glands.
Already installed fan:
1. Ensure the power supply is isolated.
2. Disconnect the main connections from the fan's
terminal socket or from the terminal block.
3. Remove the existing wiring and make it safe.
Surface mounting
1. Insert suitable glands into the knockouts.
3. Fix the wall box and plastic surround to the wall,
using the mounting holes provided.
4. Re-connect the earth lead to the wall box.
Flush mounting
1. Make a hole in the wall big enough to take the wall
box.
2. Insert suitable glands into the knockouts.
Differential temperature controller EDTW
F1
CAPTION
F3
Ensure mounting frame flange fits flush to the wall
F1
1
2
5
3
Low
4
1)
Fan terminal block
2)
EDTW Controller terminal block
3)
Low level sensor
4)
High level sensor
5)
Double pole isolator
6)
Fuse (6.3 amp motor rated)
F2
7) ON/OFF switch
6
8) Forward or reverse running
High
9) Automatic or manual mode
10) Fan running indicator light
Fuse 6.3 amps motor rated
11) Ventilation slots
12) Speed/temperature setting
13) Screw cover
F2
14) Facia
15) Mounting frame
17
16) Metal wall box
17) Plastic surround
16
15
14
13
12
11
10
7
9
F4
8
Differential temperature controller EDTW
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
Fig. 1: Cable gland position
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.
Fig. 2a: Removing sxrew covers
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.
Fig. 2b: Removing facia
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.
Fig. 2c: Removing mounting frame
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 minimum. The minimum speed at the potentiometer
is to be set in such a way, that the fan starts reliably 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 !
Fig. 2d: Potentiometer for setting the minimum speed
• 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.
Differential temperature controller EDTW
SS-438
SS-438
EDTW
EDTW
Differenz differential
EElectronic
Temperaturregler
temperatere
controller
Electronic differential
temperature controller
Anschlußplan vom Ventilator
beachten!
See wiring diagram of fan !
Voir
branchement
Seeshéma
wiring de
diagram
of fan!
du ventilateur !
Ventilator
Fan
Fan
Ventilateur
weitere Ventilatoren
further
fans fans
further
autres ventilateurs
Régulateur d' écart
de température
Bodenfühler
Low level
sensor
Floor sensor
Sonde au sol
Ref. No. 95101/ 04.08
Deckenfühler
Ceiling sensor
High
level
Sonde
de sensor
plafond
Service und Information
D HELIOS Ventilatoren GmbH & Co · Lupfenstraße 8 · 78056 VS-Schwenningen
CH HELIOS Ventilatoren AG · Steinackerstraße 36 · 8902 Urdorf / Zürich
A HELIOS Ventilatoren · Postfach 854 · Siemensstraße 15 · 6023 Innsbruck
F
HELIOS Ventilateurs · Z.I. La Fosse à la Barbière · 2, rue Louis Saillant · 93605 Aulnay sous Bois Cedex
GB HELIOS Ventilation Systems Ltd. · 5 Crown Gate · Wyncolls Road · Severalls Industrial Park ·
Colchester · Essex · CO4 9HZ
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