tado° – Technical Documentation V1.0
9
tado°s Smart Thermostat supports both 230V and low voltage interfaces. The wiring
diagram on the back of the device shows the wiring for the relay operation, three iso-
lated parking slots for excess wiring (from the thermostat which is to be replaced) and
three low voltage terminals for analog and bus connection.
When
replacing a relay thermostat
, connect COM and NO and optionally NC (if
present in the current thermostat). Place any additional wires, such as a neutral wire
into the parking slots without labeling next to the relay terminals. They do not have any
function other than safely parking excess wires.
To
replace an analog thermostat
, use the three low voltage terminals on the right hand
side. The analog output is connected to “A”, ground (GND) to “-” and the positive input
(Vcc) to “+”.
When
replacing a two-wired digital thermostat
, the two low voltage terminals labeled
with “-” and “+” are used. Typically digital bus interfaces are protected against polarity
reversal, thus the order of connection does not matter.
When replacing wireless thermostats, the additional purchase of the tado° extension kit
is recommended. tado°s Extension Box replaces an existing external reciever, extenal
controller or is connected directly to the boiler. The tado° Smart Thermostat can then
be placed in any suitable location without any wired connection being required.
Wiring
A
System Components – tado° Smart Thermostat
TROUBLESHOOTING:
The tado° Smart Thermostat can be reset by pressing the but-
ton on the front for more than 8s.
