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ELECTRICAL
Before connecting power to the control package, read and understand the entire section of this document.
As-built wiring diagrams are furnished with each control package from the factory and are either attached
to the door of the unit or provided with the paperwork packet.
Electrical wiring and connections must be made in accordance with local ordinances and the National
Electric Code, ANSI/NFPA70. Verify the voltage and phase of the power supply, and the wire amperage
capacity is in accordance with the unit nameplate.
ATTENTION: LOW-VOLTAGE DC OR SIGNALING WIRE SHOULD BE ROUTED IN SEPARATE
CONDUIT FROM ALL AC VOLTAGE SOURCES.
1. Always
disconnect power
before working on or near this equipment. Lock and tag the disconnect
switch or breaker to prevent accidental power-up.
2.
There are multiple electrical connections
required for this control.
120V AC
should be wired to
terminals
H1
and
N1
. If the hood is equipped with a separate light circuit,
120V AC
should power this
circuit per the as-built schematic.
H1
and
N1
should not be connected to a shunt trip breaker.
3. Verify that the power source is compatible with the requirements of your equipment. The system wiring
schematic identifies the
proper phase and voltage
of the equipment.
4. Before connecting the control package to a power source, verify power source wiring is de-energized.
5. Secure the power cable to prevent contact with sharp objects.
6. Do not kink power cable and never allow the cable to come in contact with oil, grease, hot surfaces, or
chemicals. Release solenoid cables
must not
come in contact with hood surfaces.
7. If the control package is a
wall-mount system
, a duct mounted temperature sensor will need to be
wired. The temperature sensor must be wired to terminal blocks, as indicated on the wiring schematic.
8. If the system contains additional firestats, they must be wired into the supervised loop.
9. If the control is a
wall-mount system,
the hood lights wiring will need to be wired to terminals “B” and
“W.” Verify connections on wiring schematic.
10. Before powering up the system, make sure that the interior of the control package is free of loose
debris or shipping materials.
11. If any of the original internal wire supplied with the system must be replaced, it must be replaced with
type THHN wire or equivalent.
12. All field-supplied wire for the optional fire system release solenoid or firestat must be high temp wire
rated for
842°F
minimum (#441601C6.FE9 White and #441601C6.FE0 Black).
13. The battery must be plugged into the connector labeled J1 on the electrical board (PCBCORE) after
wiring is complete.
14. All gas appliances under the hood must shut down in the event of an AC power loss. All electric
appliances will shut down on building power loss.
15. It is recommended to use Belden #6320UL, 18 Gauge, plenum-rated wire for the supervised loop that
does not come in contact with the hood. It is recommended to use Belden #88760 for the fire system
interlock network and CAT-5 for Modbus communications.
16. All exterior wiring connections to the PCU must be run inside liquid tight conduit. This includes the
supervised loop and airflow switch wiring.
IMPORTANT!: The battery backup for the fire protection system produces output power even when
main power is disconnected from system. When performing major electrical service to the control,
the battery backup must be disconnected then reconnected before commissioning.
WARNING!!
Disconnect power before installing or servicing control. High voltage electrical input is needed
for this equipment. A qualified electrician should perform this work.
Summary of Contents for EWC
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