FV1/D- Frost protection unit, DIN-rail mounting

The electronic frost protection unit FV1/D is mainly intended for use in air handling systems. If the temperature falls below the setpoint, the relays will fall and an alarm LED lights up. The unit should be connected to a Regin NTC sensor placed on the heating coil or return water pipe. FV1/D has two alarm relays and manual or automatic reset. The sensor must have 0…30°C temperature range, suitable sensors are TG-A130 and TG-B130 from Regin.

When there is frost risk, FV1/D has a 0…10 V DC control output that can be used to override the valve.

Technical Description

Power consumption 2 VA
Setpoint 0…15°C
P-band, control signal override 5 K (fixed)
Supply voltage 24 V AC
Sensor inputs One, 0…30°C (NTC sensor)
Control signal 0…10 V DC (from the controller)
Relays 24 V AC, 1 A, change-over and 230 V AC, 1 A, breaking contact
Protection class IP20
Mounting DIN-rail
Number of modules 3
Output signal 0…10 V DC


Product Range

Delivered without sensor


Declaration of Conformity

FV1_D _Declaration_of_Conformity