Installation and Setup
18
Wiring diagrams
N L 1 2 3 4
3 A MAX
L
N
Clock
1 2 3
N L T1 T2
(Thermostat)
BOILER
N L 1 2 3 4
3 A MAX
L
N
Clock
A
B
N L T1 T2
BOILER
THR850S
230 Vac connection
Potential-free connection
Note 1
: If normal mains voltage is required, link terminals L and 1.
Note 2
: This is a Class II device (i.e., double insulated). A parking
terminal is available for earth wiring if required.
Digital
Timer
Digital
Timer
Room
Thermostat
Digital Room
Thermostat
