Installation
Controls using 24 VAC
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.
Before installing any connecting wiring, refer to Figure 3 to Figure 8 for the electrical access locations provided on the unit and Table 9 for AC conductor sizing guidelines, and;
1.Use copper conductors unless otherwise specified.
2.Ensure that the AC control wiring between the controls and the unit’s termination point does not exceed three (3) ohms/conductor for the length of the run.
NOTICE
Resistance in excess of 3 ohms per conductor may cause component failure due to insufficient AC voltage supply.
3.Be sure to check all loads and conductors for grounds, shorts, and miswiring.
4.Do not run the AC low voltage wiring in the same conduit with the high voltage power wiring. Typical Low voltage components may include:
zone thermostat wiring (AC & DC wiring); system control switch wiring (VAV units); night setback relay wiring (VAV units); economizer actuator circuit wiring (VAV units); discharge air sensor wiring (VAV units); chilled water temperature sensor (EVP units); jumpers for hot gas bypass operation.
Table 9. AC Conductors
Distance from | Recommended |
Unit to Control | Wire Size |
|
|
000 - 460 feet | 18 gauge |
|
|
461 - 732 feet | 16 gauge |
|
|
733 - 1000 feet | 14 gauge |
|
|
Controls using DC Analog Input/Outputs
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.
Before installing any connecting wiring between the unit and components utilizing a DC analog input\output signal, refer to Figure 3 to Figure 8 for the electrical access locations provided on the unit.
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