Screw Terminal Arrangement - Viconics VT76 7 Series Installation Manual

Screw terminal arrangement

5 pole left top connector
Y2 Y1 G RC C
8 pole bottom connector
HM AU DH DI HS
Wiring notes:
Note 1: If the same power source is used for the heating stages, install jumper across RC &
RH. Maximum current is 2.0 amps.
Note 2: If auxiliary output is used to toggle occupancy of the electronic control card inside
the equipment, configure the relay parameter (Aux cont.) to the N.O. setting. A
second relay can be added for additional functionality of the occupancy output.
Note 3: Humidifier output uses a half bridge rectifier. Reference of the control signal is the
common of the power supply of the Room Controller. (Terminal C)
Note 4: Electromechanical contacts are to be used with the digital inputs. Electronic triacs
cannot be used as mean of switching for the input. The switched leg to the input for
the input to activate is terminal C (common)
Note 5: The transformer of the unit provides power to the t Room Controller and the
additional loads that will be wired to the Room Controller.
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3 pole left top connector
RH W1 W2
OS HL
Scom
November 2015