Electrical installation
54
Installation instructions geoTHERM 0020051574_04
7
7.3.7
Connecting a limit thermostat (dual-circuit
supply)
PE
L2 L1
L3
N
L3 L2 L1
N
PE
L3 L2 L1
N
PE
1
2 N PE
L
N
PE
S
S
L
N
PE
N L3
T
1
+
230 V
50 Hz
2
7.14 Connecting limit thermostats VWS
L3 L2 L1
N
PE
L3 L2 L1
N
PE
L3 L2 L1
N
PE
L
N
PE
PE
L2 L1
L3
N
T
1
230 V
50 Hz
2
L
N
PE
N L3
7.15 Connecting limit thermostats VWW
Key
T
Limit thermostat
A limit thermostat (on-site) can be connected as additional
floor protection.
If there is a lock-out due to the limit thermostats, the con-
troller displays the error message 91 (
¬
Ch. 11.5
).
>
Remove the bypass pipework (dashed lines) (
2
).
>
Install a limit thermostat on the standard power supply
for the auxiliary consumers in such a way that it inter-
rupts the current-carrying conductor.
>
Connect a limit thermostat to the terminals (
1
).
