Installation manual
Kitchen Hoods • Type I and Type II28
Overall Wiring Plan View for Switch Panels
The diagrams below show typical wiring for combined 
exhaust and supply switching when the switches are 
shipped loose for remote mounting, and for hood 
mounted switches.
The diagram shows how to wire the exhaust and 
supply fan starters to the switches and fire suppression 
contact. Typically, supply fans will be turned off and 
exhaust fans will be turned on (or continue to run) in the 
event the fire system is activated. The fire suppression 
micro-switch is provided as part of the fire suppression 
system and is normally mounted in the fire system 
control box.
EXH
STR
FAN
CONTROL
VOLTAGE
H
N
SUP
STR
FAN
OL
FANSLIGHTS
SWITCHES
HOOD LIGHTS
VOLTAGE FOR LIGHTS
J-BOX ON
TOP OF
HOOD
SUP
HTR
CTRL
SUP
CTRL
COOL
HEAT/COOL
CONTROL
VOLTAGE
SUPPLY FAN
CONTACT
BLACK
WHITE
N
H
H
N
NC
NO
COM
OL
FIRE SUPPRESSION
MICRO-SWITCH/CONTACTS
120 VAC
TYPICAL WIRING FOR COMBINED 
EXHAUST & SUPPLY SWITCHING (SHIPPED LOOSE)
FIELD WIRING
FACTORY WIRING
COM
NO
NC
STR
Normally-open
Normally-closed
LABEL DESCRIPTION
Common
Motor Starter
OL
Overload
FAN STARTERS PROVIDED 
BY OTHERS
EXH
STR
FAN
CONTROL
VOLTAGE
H
N
SUP
STR
FAN
OL
FANSLIGHTS
SWITCHES
HOOD LIGHTS
VOLTAGE FOR LIGHTS
FAN STARTERS PROVIDED 
BY OTHERS
J-BOX ON
TOP OF
HOOD
SUP
HTR
CTRL
SUP
CTRL
COOL
HEAT/COOL
CONTROL
VOLTAGE
SUPPLY FAN
CONTACT
BLACK
WHITE
N
H
H
N
FIELD WIRING
FACTORY WIRING
NC
NO
COM
OL
FIRE SUPPRESSION
MICRO-SWITCH/CONTACTS
120 VAC
COM
NO
NC
STR
Normally-open
Normally-closed
LABEL DESCRIPTION
Common
Motor Starter
OL
Overload
BLACK
BLACK
BROWN
RED
J-BOX ON
TOP OF
HOOD
ORANGE
PURPLE
YELLOW
TYPICAL WIRING FOR COMBINED 
EXHAUST & SUPPLY SWITCHING (HOOD MOUNTED)
Shipped Loose Hood Mounted
Circuit Diagrams
ON
ON (NO)
ON
ON (NO)
ON
ON
ON (NO)
ON
ON (NO)
ON
ON
ON (NO)
ON (NO)
ON ON
ON
ON (NC)
ON (NC)
ON
ON (NC) ON (NC)
ON
ON (NC)
ON (NC)
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
On if both are not activated
Off if both are activated
Off if either are not activated
Off if both are not activated
On if both are activated
Off if either are not activated
Off if both are activated
On if either is activated
On if either is activated
On if both are activated
Off if both are not activated
Off if either not activated
Single Throw
Single Pole
Double Pole
Double Throw
Double Throw
Center Off
Series Circuit
Normally 
Open 
Contacts
Parallel Circuit
Normally 
Closed 
Contacts
NOTE
Wiring examples for use when a control panel is not 
provided as part of the kitchen package.










