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TDTR 300/500/750/1000EW
3 Electrical connection
The voltage specified on the type plate must match
the line voltage.
The cable must not be in contact with the casing.
It is recommended that a separate electric circuit be
provided for the power supply.
The device must only be repaired by a qualified elec-
trician in accordance with the applicable safety regu-
lations. Heating device must be earthed!
Connection may only take place on securely routed
cables!
A disconnecting device with a contact opening of at
least 3 mm at each pole (e.g. circuit breaker) must be
provided in the permanently installed wiring!
3.1
Connection options
If a central temperature reduction is to take place via
the pilot wire, device connection A should be used, if
not, device connection B.
Device connection A
blue
brown
black
Connection socket
Mains 230V
Device connection B
blue
brown
black
Connection socket
If the black wire is not used, it must be connected to
an electrically insulated terminal and not to the power
supply.
Under no circumstances may the black wire be con-
nected to a ground connection or to the green/yellow
wire.
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Neutral wire
Ext. conductor
Pilot wire
Neutral wire
External conductor
2409/A
3.2
Commands via the pilot wire
Command
Signal
Comfort
Eco
Frost protection
Heating off
NOTE
For manual operation, the "Frost protection" and
"Heating off" commands have priority. This is indi-
cated by the word AUTO flashing.
4 Controller description
4.1
Operating panel
The device is equipped with an adjustable electronic
controller with display. All settings can be made using
the six keys on the user interface.
9
2
1
8
7
3
1
Display
Heating operation on
Energy efficiency
Heating program P1-P6
2
Energy efficiency indicator
3
On/Off key
4
Mode key
5
Plus key
6
Minus key
7
Boost key
8
Repeat key
9
Display LED Repeat 1
10
Display LED Repeat 2
English
Measurement against neutral
0 Volt
230 V
115 V (negative)
115 V (positive)
10
4
5
6
EN-6
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