Greenheck Kitchen Fan Control Center User Manual

Document 475730

Kitchen Fan Control Center

®

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble,
install, operate or maintain the product described. Protect yourself and others by observing all safety
information. Failure to comply with instructions could result in personal injury and/or property damage!

WARNING

Electrical shock hazard. Can cause equipment
damage, personal injury, or death. Service must be
performed only by personnel that are knowledgeable
in the operation of the equipment being controlled.

CAUTION

It is the responsibility of the installer to make sure
both electrical and gas appliances shut down in
the event of a fire or in the event of a power loss to
the building when this sequence is required by the
authority having jurisdiction.

Table of Contents

General Description ..........................2

Receiving and Handling .......................2

Installation

Control Box .................................3

Switch Mounting .............................3

Resistive Temperature Detector(s)

Hood Mounting .............................3

Duct Collar Mounting ........................4

Thermostat

Hood Mounting .............................4

Duct Collar Mounting ........................5

Electrical Connections

Power for KFCC .............................6

Power for Hood Lights ........................6

Power for Starters and Fans ....................6

Fire System Integration ........................7

Spare Fire Relay .............................7

Switches

Fan, 1-Speed ..............................7

Fan, 2-Speed ..............................7

Lights ....................................7

Tempered Supply, Heat Only ..................8

Cool Only ..................8

Heat and Cool ...............8

Combination Fan/Light Switch .................8

Auto-Damper Switch on KFCC ................8

Make-Up Air Interface .......................8

Power for Shunt Trip .........................8

Audible Alarm ..............................8

Lights Out in Fire ...........................9

Extra Fire Relay .............................9

Extra Exhaust Relay .........................9

Extra Supply Relay .........................10

Exhaust Fan Failure Indicator .................10

Supply Fan Failure Indicator ..................10

Status Lights ..............................10

Water Wash Control Panel Interface ...........10

Temperature Interlock, Digital .................11

Temperature Interlock, Thermostat .............11

Digital Temperature Interlock Configuration . . 12-13
Thermostat Style Temperature

Interlock Configuration ......................13

KFCC Field Connection Checklist ..............14

General Wiring Diagram ......................15

Testing ....................................16

Operation ..................................17

Troubleshooting .............................17

Maintenance ...............................18

Frequently Asked Questions ..................18

Replacement Parts ..........................19

Codes and Standards ........................19

Our Commitment ............................20

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Kitchen Fan Control Center

1

General Description

Receiving and Handling

Description

The kitchen fan control center, or KFCC, is a
pre-engineered package designed to control the
operation of fans in a constant-volume kitchen. The
package consists of a cabinet encasing one or more fan
motor starters interlocked together for on/off operation.
Different fan, light and thermal switch combinations may
be provided to operate the kitchen hood fan(s), light(s),
and heating/cooling capabilities of the supply air. The
control center as a standard is equipped with additional
relays prewired to the fan starter(s). These additional
relays are capable of turning on the kitchen exhaust and
shutting down supply regardless of the present state of
the fans via integration of a fire system microswitch with
factory terminals. The control center can be equipped
with temperature interlock, designed to automatically
start kitchen fans and keep them running while heat is
being generated from the cooking appliances. Hood
systems should always be manually started before the
cooking equipment is turned on, but if forgotten the
interlock will safely trigger the fans to start once heat is
detected. Other options are available.

Purpose

The purpose of the KFCC is to provide a complete
control center to provide and house all fan starters. The
control center provides a common connection point
to interlock kitchen exhaust, supply, and hood lights
with the hood’s fire suppression system. The cabinet
is pre-engineered with terminal blocks for most field
wiring connections. The control center can also be
equipped with interlock between the exhaust fans and
cooking equipment, as to meet International Mechanical
Code (IMC) 2006 section 507.2.1.1. In this case, the
system will utilize a temperature sensor in the exhaust
duct collar or capture area in the hood to detect heat
generated from cooking operations and automatically
activate the exhaust fans if not already running.

Product Application

The KFCC is designed for both Type I and Type II
(grease and non-grease) constant-volume hood
systems, where starters are needed to activate fans.
The control center can operate both single and three
phase fans. Greenheck recommends using one KFCC
per hood system (activates all fans simultaneously).
When temperature interlock is provided in this package,
it is not to be used in conjunction with exhaust fire
dampers.

Receiving

Upon receiving the product, check to make sure all
items are accounted for by referencing the bill of lading
to ensure all items were received. Notify the carrier if
any damage is noticed. The carrier will make notification
on the delivery receipt acknowledging any damage to
the product. All damage should be noted on all of the
copies of the bill of lading which is countersigned by the
delivering carrier. If damaged upon arrival, file a claim
with the carrier. Any physical damage to the unit after
acceptance is not the responsibility of the manufacturer.

Unpacking

Verify that all required parts and the correct quantity of
each item have been received. If any items are missing,
report shortages to your local representative to arrange
for obtaining missing parts.

Storage

If a kitchen fan control center must be stored prior to
installation, it must be protected from dirt and moisture.
Indoor storage is highly recommended. For outdoor
storage, cover the control package with a tarp to keep it
clean, dry, and protected from UV (ultraviolet) radiation
damage.

NOTE

Improper storage which results in damage to the unit
will void the warranty.

Handling

Make sure the equipment does not suffer any heavy
vibration or knocks.

Kitchen Fan Control Center

2

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Installation

0.75 to 0.875 inch

(19.0 to 22.2 mm)

diameter hole

Hood Surface

3 inch air space

19.525 inches

Sensor Install

(cutout area)

Exhaust Area

Supply Area

(optional)

P.O.BOX 410 SCHOFIELD,

TITLE

INSTR, ADJ.

J-Box Plate
PN 732396

Temperature Sensor (RTD)
PN 384925

Octagon Cover
PN 380926

TENSION RING, AND PLACE OVER HOLE.
E THE COMPRESSION SEAL AND PLACE

NOTE

All field installation of electrical equipment must be
done to meet all NEC and electrical codes.

Control Box Mounting

NOTE

Control box may be factory mounted. If so, continue
to the next section.

Locate an area with enough space to mount the control
box and securely fasten to the wall. Use appropriate
type fasteners depending on the mounting location.
Avoid installing the control box in environments with
high magnetic and/or radio frequency interference.

Switch Mounting

NOTE

If the switches were NOT shipped loose, provided in a
separate junction box, continue to the next section.

Resistive Temperature Detector(s)

- Hood Mounting

NOTE

The resistive temperature detector(s), or RTD(s), will

be provided only if the digital temperature interlock

option was configured/ordered with the unit. If it

wasn’t, continue to the next section.

Resistive temperature detector(s) may be factory

installed. If so, continue to the next section.

1. Locate flat area(s) at the top interior of the hood in

front of the filters, towards the front of the hood.

2 inch typical

Locate an area with enough space to mount the
switches junction box and fasten to the wall.

Top View of Exhaust Hood

2. Cut a 3/4 to 7/8-inch

(19.0 to 22.2 mm) diameter hole

in the flat spot of the capture
tank. Make sure the
resistive temperature
detector(s) will not
interfere with fire
system nozzles and is
not within 12inches of
light fixtures.

3. Place the J-box plate inside of the octagon extension

ring and place over the hole.

4. Disassemble the compression seal and place through

hole and J-box plate as shown. Tighten the nut inside
the octagon extension ring.

1/4-inch Compression Seal
PN 463570

Gasket

Octagon Extension
PN 830125

Lock Washer

Nut

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5. Place the resistive temperature detector through the

compression seal and tighten the compression fitting.

6. Refer to Electrical Connections section for

instructions on wiring the temperature sensor.

7. Install the cover for the octagon box.

Kitchen Fan Control Center

3

Resistive Temperature Detector(s)

19.525 inches

3 inch air space

2 inch typical

Exhaust Area

Supply Area

(optional)

Sensor Install

(cut out area)

- Duct Collar Mounting

NOTE

The resistive temperature detector(s), or RTD(s), will
be provided only if the digital temperature interlock
option was configured/ordered with the unit. If it
wasn’t, continue to the next section.

Resistive temperature detector(s) may be factory
installed. If so, continue to the next section.

1. Locate the exhaust duct on top of the hood. A 3/4
to 7/8-inch
be cut into the duct 2inches (50.8 mm) above the
hood top. Center the hole along the side of the duct.
Make sure that the resistive temperature detector will
not interfere with any fire system nozzles, or other
items installed in the exhaust duct. If an exhaust fire
damper is present the hood exhaust collar, it must be
removed prior to temperature sensor installation.

2. Place the J-box plate inside of the octagon extension
ring and place over the hole in the exhaust collar.

3. Disassemble the compression seal and place through
hole in duct collar and J-box plate as shown. Tighten
the nut inside the octagon extension ring.

4. Place the resistive temperature detector through the
compression seal and tighten the compression fitting.

5. Refer to Electrical Connections section for
instructions on wiring the temperature sensor.

6. Install the cover for the octagon box.

Kitchen Fan Control Center

4

(19.0 to 22.2 mm) diameter hole must

0.75 to 0.875 inch

(19.0 to 22.2 mm)

diameter hole

1/4-inch Compression Seal
PN 463570

Gasket

Hood Exhaust Collar
Front Side

Octagon Extension
PN 830125

Octagon Cover
PN 380926

2 inches

(50.8 mm)

J-Box Plate
PN 732396

Lock Washer

Nut

Temperature Sensor (RTD)
PN 384925

Thermostat - Hood Mounting

NOTE

The thermostat will be provided only if the thermostat
style temperature interlock option was configured/ordered
with the unit. If it wasn’t, continue to the next section.

The thermostat may be factory installed. If so,
continue to the next section.

Recommended thermostat mounting location is in the

Nut

(20.32cm)

(28.58 to 31.75 mm)

Thermostat

PN 383923

flat interior of the hood and at least 8 inches
from light fixture.

Hood Plan View

1. Locate the flat area(s) at the top interior of the hood in
front of the filters, towards the front of the hood. A 11⁄8
to 1¼ inch (28.58 to 31.75 mm) diameter hole must
be cut into the top of
the capture tank. Make
sure the thermostat
will not interfere with
the fire system nozzles
and is not within eight
inches
the light fixtures.

(20.32cm) of

Hood Surface

2. Place the J-box plate inside of the octagon extension
ring and place over the hole.

3. Insert the Evergreen compression seal fitting into the
hole from the inside the hood, making sure the gasket
is placed on the fitting before inserting it into the
hole. Install the J-box plate, lock washer, and 1-1/2
inch (38 mm) nut over the threaded portion of the
compression seal fitting and tighten securely.

5/8-inch Compression Seal

PN 452614

Gasket

Octagon Extension

PN 830125

J-Box Plate

PN 732396

Lock Washer

Octagon Cover

PN 380926

4. Place the thermostat detector through the
compression seal and tighten the compression fitting
to 35 ft-lbs.

5. Refer to Electrical Connections section for
instructions on wiring the thermostat.

6. Install the cover for the octagon box.

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Thermostat - Duct Collar Mounting

NOTE

The thermostat will be provided only if the thermostat
style temperature interlock option was configured/
ordered with the unit. If it wasn’t, continue to the next
section.

The thermostat may be factory installed. If so,
continue to the next section.

1. Locate the exhaust duct on top of the hood. A 11⁄8to
1¼-inch (28.58 to 31.75 mm) diameter hole must be
cut into the duct 2inches (50.8 mm) above the hood
top. Center the hole along the side of the duct. Make
sure that the thermostat will not interfere with any fire
system nozzles, or other items installed in the exhaust
duct. If an exhaust fire damper is present the hood
exhaust collar, it must be removed prior to thermostat
installation.

(28.58 to 31.75 mm)

Hood Exhaust Collar
(front side)

2 inches

(50.8 mm)

2. Place the J-box plate inside of the octagon extension
ring and place over the hole.

3. Insert the Evergreen Quik-Seal fitting into the hole
from the inside of the duct, making sure the gasket is
placed on the fitting before inserting it into the hole.
Install the J-box plate, lock washer, and 1-1/2 inch
(38 mm) nut on the threaded portion of the Evergreen
Quik-Seal fitting and tighten securely.

1/2 inch Quik-Seal

PN 451168

Gasket

Octagon Extension

PN 830125

J-Box Plate

PN 732396

Lock Washer

Nut

Thermostat

PN 383923

Octagon Cover

PN 380926

4. Thread the thermostat through the Quick-Seal and
tighten to 35 ft-lbs.

5. Refer to Electrical Connections section for
instructions on wiring the thermostat.

6. Install the cover for the octagon box.

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Kitchen Fan Control Center

5

Electrical Connections

NOTE

All field wiring of electrical equipment must be done to
meet all NEC and electrical codes.

The extent of field wiring required will depend on the
options and general configuration of the KFCC. Each
option is broken out in the next portion of this manual.
Each option will either be factory wired or will require
field wiring. Use 14 AWG, 60°C copper wire unless
otherwise specified.

Power for KFCC

The KFCC needs a power source to operate all inner
components. This power source cannot be on a shunt
trip breaker; the power must remain constant to the
panel, even in the event of a kitchen fire.

Power for KFCC

• 120 VAC, 15 amp circuit to terminals H1 and N1

L1

H1

CONTROL INPUT:

120 VAC, 15 AMPS FROM BREAKER

Power for Hood Lights (Optional)

If the KFCC is configured for hood light control, a
separate power source for each light circuit will need
to be run to the panel as well to power the lights. The
KFCC can provide up to three light circuits.

Power for Hood Lights

• 120 VAC, 15 amp circuit to terminals H2 and N2
(first light circuit)

• 120 VAC, 15 amp circuit to terminals H3 and N3
(second light circuit)

• 120 VAC, 15 amp circuit to terminals H4 and N4
(third light circuit)

Hood Lights

• To terminals B2 and W2 (first light circuit)

• To terminals B3 and W3 (second light circuit)

• To terminals B4 and W4 (third light circuit)

L1

H2

BK

LIGHT INPUT: 120 VAC,

15 AMPS FROM BREAKER

S-1

B2

LT

1400W max.

LT

N1

G

N

N

WH

W2

N2

Power for Starters and Fans

The KFCC is equipped with contactors that may have
thermal overloads attached to them. Each fan should
have a designated power source. The breaker size
(amps), wire gauge, phase, and voltage for each fan is
specified on the KFCC wiring diagram. Two speed fans
will require two separate starters.

115 VAC Single Phase Fan(s) Power Wiring

• LINE - from breaker to terminals L1 and L2

• LOAD, 115 VAC - from terminal block L1 and T3 on
the bottom of contactor/overload to fan disconnect

OL1 ST1

T1

T2

T3

T1

T2

T3

T1

T2

T3

T1

T2

T3

OL2 ST2

T1

T2

T3

OL3 ST3

T1

T2

T3

Exh

FAN 1

Exh

FAN 2

Exh

FAN 3

INPUT POWER

2 wire

115/1 phase

from breaker

L1

N

L2

Single phase, 115 VAC

Wiring Connection Example

L1

L2

L3

200/208/230/277 VAC Single Phase Fan(s) Power
Wiring

• LINE - from breaker to terminals L1 and L2

• LOAD, 200/208/230/277 VAC - from T1 and T3 on
the bottom of contactor/overload to fan disconnect

INPUT POWER

2 wire

208/1 phase

from breaker

L1

L2

Single phase, 200/208/230/277 VAC

Wiring Connection Example

L1

L2

L3

Three Phase Fan(s) Power Wiring

• LINE - from breaker to terminals L1, L2 and L3

• LOAD - from T1, T2 and T3 on the bottom of
contactor/overload to fan disconnect

INPUT POWER

3 wire

208/3 phase

from breaker

Three phase, Wiring Connection Example

200V, 208V, 230V, 460V, and 575V also available

L1

L2

L3

L1

L2

L3

G

G

G

NOTE

Light circuit must not exceed 1400W maximum.
Hood lights may be directly wired to light switch,

creating unoccupied terminals B2, B3 and B4. Please
refer to the wiring diagram specifically created for the
panel on the inside door of the control center.

Kitchen Fan Control Center

6

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