Electrical Installation - Wells GK48 Owner's Manual

Ventless universal hood system for electric cooking appliances
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INSTALLATION
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilator with gas-fired units.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING
SHOCK HAZARD
Electrical connections must
be made by a licensed
electrician.
CAUTION:
FIRE HAZARD
HEALTH HAZARD
All cooking appliances
must be connected to
the cooking appliance
contactor, the control circuit
of which is controlled by the
ventilator.
Note: Shunt trip breakers
are not an authorized
control circuit. All
appliances must be
installed per the under hood
limitations.
TO APPLIANCE
CUSTOMER
SUPPLIED
CONTACTOR(S)
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 1

ELECTRICAL INSTALLATION

Refer to the nameplate on the ventilator. Verify ELECTRICAL
SERVICE POWER. Voltage and phase must match the nameplate
specifications, and available electrical service amperage must meet or
exceed the listed amperage. Refer to specifications listed on page 1 of
this manual.
The ground lug of this ventilator must be connected to a suitable
building ground.
Remove the left side panel to access the cooking appliance contactor
and building alarm relay. Remove the appropriate knockout, then wire
the cooking appliance control circuit to the terminal block per Fig below.
NOTE: It is the responsibility of the electrical contractor to provide
suitable wiring, flexible or rigid conduit, contactors, and an appropriate
strain relief.
Electrical Connection
NOTE: The hood requires a single phase (1ph), 208 or 240 volt, 20
amp supply at 60 Hz. When connecting line voltage to the unit's
terminal block, use a minimum of #12 gage copper wire only, suitable
for 167°F (76°C) ambient temperature.
Appliance Connections
All under hood appliances are required to be interlocked with the hood's
equipment cut-off circuit, through a customer supplied contactor. Shunt
trip breakers are not authorized. This contactor must be a UL listed,
definite purpose AC resistive air heating type, suitable for the appliance load.
Installation and connections shall be in accordance with the National Electric
Code NFPA 70. These connections provide an automatic shutdown of the
appliance when the hood is OFF, or in the event of a malfunction or appliance
fire.
Equipment Cutoff Connections
Opt 1:
Use TB#3 & TB#4 for 208 or 240 volt control circuit. These contacts will be
de-energized when the hood is OFF or in the event of a malfunction
Opt 2:
Use TB#5 & TB#6 as a Normally Closed SPST relay connection for equipment
control circuits with voltages other than 208 or 240 AC. These contacts will be
L1
L2
LINE INPUT
TO CUSTOMER
208-240VAC
SUPPLIED APPLIANCE
60HZ
CONTACTOR
(240V CNTR CIRCUIT)
OPTION 1
208/240V
TB3
APPLIANCE
CONTROL
TB4
EQUIPMENT
CUTOFF
TERMINALS
TO CUSTOMER
BUILDING
SUPPLIED
ALARM
SWITCHING
INTERFACE
DEVICE (SPST)
OPTION 2
TO APPLIANCE
CUSTOMER
SUPPLIED
CONTACTOR(S)
OVER CURRENT
PROTECTED
SUPPLY
EQUIPMENT INTERFACE OPTION 2
28
T3
SPST
TB5
SWITCHED
EQUIPMENT
TB6
CUTOFF
L3
TERMINALS
CUSTOMER
SUPPLIED
SOURCE CIRCUIT
IL2376a

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