ZEC410 VAV Controllers Installation Instructions
5
Wiring
Observe the following guidelines when wiring a ZEC controller.
Input and Output Terminals
See Figure 8 for an example of the staged control wiring. See Figure 9 for an example of the incremental control
wiring.
Sensor Actuator (SA) Bus Terminal Block
The SA Bus terminal block is a brown, removable 4-terminal plug, that is keyed to only fit into the board-mounted
brown SA bus.
Risk of Electric Shock.
Disconnect power from the controller before making any adjustments. Do not touch any part of the printed circuit
board while power is applied. Failure to follow these precautions can result in personal injury or death.
Risque de décharge électrique.
Déconnecter l'alimentation du controller avant toute opération de réglage. Veiller à ne toucher aucune partie du
circuit imprimé lorsque celui-ci est sous tension. Le non-respect de ces précautions peut provoquer des blessures
graves, voire mortelles.
IMPORTANT:
Make all wiring connections in accordance with the National Electrical Code and local
regulations. Use proper electrostatic discharge (ESD) precautions during installation and servicing to avoid
damaging the electronic circuits of the controller.
IMPORTANT:
Do not exceed the controller electrical ratings. Exceeding controller electrical ratings can result in
permanent damage to the controller and void any warranty.
IMPORTANT:
Do not connect supply power to the controller before finishing wiring and checking all wiring
connections. Short circuits or improperly connected wires can result in damage to the controller and void any
warranty.
IMPORTANT:
Use copper conductors only. Make all wiring in accordance with local, national, and regional
regulations.
