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Installation — Electrical
Note: Any modifications, additions or changes to the
control box could void the factory warranty and UL
certification. Such modification, additions or
changes will become the responsibly of the
modifying contractor.
Unit Wiring Diagrams
Specific unit wiring diagrams, based on unit options
ordered, are provided inside each unit and can be easily
removed for reference. Use these diagrams for
connections or trouble analysis. Wiring diagrams are
attached on the outside of the side panel.
Note: Any modifications, additions or changes to the
control box could void the factory warranty and UL
certification. Such modification, additions or
changes will become the responsibly of the
modifying contractor.
Supply Power Wiring
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Refer to the unit nameplate to obtain the minimum circuit
ampacity (MCA) and maximum overcurrent protection
(MOP) to properly size field supply wiring and fuses or
circuit breakers.
Refer to the unit operating voltage listed on the unit wiring
schematic, submittal, or nameplate. Reference the wiring
schematic for specific wiring connections.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not
designed or qualified to accept other types of
conductors.
82
Note: All field wiring should conform to NEC and all
applicable state and local code requirements. The
control panel box is always on the end opposite the
piping connections. Access the control box by
removing the two screws that secure the front cover.
This will allow the panel to be removed, to provide
access to the electrical components.
WARNING
Electrical Short Hazard!
Failure to follow instructions below could cause
electrical shorts that could result in death or serious
injury.
Insulate all power wire from sheet metal ground.
If the unit does not have a disconnect switch, the power
leads and capped ground wire are inside the control panel.
If the unit has a disconnect switch, the power leads are
wired to the disconnect switch on the control panel.
Electrical Grounding
Restrictions
All sensor and input circuits are normally at or near ground
(common) potential. When wiring sensors and other input
®
devices to the Tracer
controller, avoid creating ground
loops with grounded conductors external to the unit control
circuit. Ground loops can affect the measurement accuracy
of the controller.
NOTICE
Component Damage!
Failure to follow instructions below could result in
immediate or premature component failures.
Unit transformers are sized to provide power to the
unit only. Do not use these transformers to supply
power to field equipment.
All input/output circuits (except isolated relay contacts and
optically isolated inputs) assume a grounded source, either
a ground wire at the supply transformer to control panel
chassis, or an installer supplied ground.
Interconnection Wiring
The installer must provide interconnection wiring to connect
wall-mounted devices such as a fan mode switch or zone
sensor module.
Refer to the unit wiring schematic for specific wiring details
and point-to-point wiring connections. Dashed lines
indicate field wiring on the unit wiring schematics. All
interconnection wiring must conform to NEC Class 2 wiring
requirements and any state and local requirements.
Refer to the following table for the wire size range and
maximum wiring distance for each device.
BCX-SVX002A-EN
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