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CONNECTION DIAGRAMS
1. Connection of the thermostat with a voltage relay 230V (e.g. VS30/RT200/ERT20/ERT30/
ERT50/VS10) to a gas boiler which requires free-voltage output NO/COM.
A boiler with a free-
A boiler with a free-
-voltage relay
-voltage relay
Thermostat 230V
Thermostat 230V
CONNECTION DIAGRAMS
2. Connection of the SALUS temperature regulator with NO/COM relay (e.g. 091FL) with a
boiler control which requires NC/COM output ( NC/COM output is normally required in solid
fuel boilers controls).
Thermostat with a
Thermostat with a
free-voltage relay
free-voltage relay
A boiler with NC/
A boiler with NC/
COM input
COM input
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