nest Heat Link Guia De Instalacion página 12

Installing the Heat Link
3. Connect to the thermostat wires
Skip to the next step if you're installing the
Nest Thermostat on the stand and are using
the USB cable for power .
Take two wires from the wire bundle that goes
to the current thermostat and attach them to
the T1 and T2 terminals on the Heat Link .
12
HOT WATER
Call-for-heat (normally open)
Common
Satisfied (normally closed)
HEATING
Call-for-heat (normally open)
Common
Satisfied (normally closed)
12 V DC power
Earth
OpenTherm (42 V DC max)
230 V AC live and neutral
input power