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® 2018 Valco Companies, Inc.
Output Relay Wiring
Bring the wire from an output channel through a strain relief or conduit on the bottom of the of the controller and
up between the banks of relays to the proper relay. The control wire should run from the circuit breaker to the Ventra
Pro
TM
relay and then out to the device or device contactor.
We recommend dedicating a separate circuit breaker for each channel. That way, if there is a problem with one of the
device groups, it won’t disable your entire ventilation system.
HOT
HOT
GROUND
High voltage wire must be brought up
through the bottom of the control and
secured to the middle of the PC board with
adhesive mounting pads and cable ties.
Cable ties should be used to group
individual wires.
220 Volt Wiring Example
Disconnect all POWER while
servicing this control!