operation manual

58
Start-up
Permitted cable cross sections for connecting to the wall
thermostat are:
rigid cable
[mm
2
]
flexible cable with/without ferrule
[mm
2
]
0.75 – 1.50 0.75 – 1.50
5.2 Installation
To install the wall thermostat, please proceed as follows:
• Switch o the fuse of the power circuit.
• Remove the cover of your existing wall thermo-
stat.
To make removal easier, a flat, pointed object
such as a slotted screwdriver can be used.
• Release the wiring and remove the existing wall
thermostat.
• Connect the phase conductor to connecting ter-
minal L (G) of the voltage supply unit (F) (see fig.
3+4).
• Connect the neutral conductor to connecting
terminal N (H) of the voltage supply unit (F) (see
fig. 3+4).
• Connect the conductor of the valve drive to con-
necting terminal 1 (I) of the voltage supply unit (F)
(see fig. 3+4).