Greenheck Fan Canopy Type Kitchen Hoods 452413 Users Manual

452413 to the manual ed8570c3-b7e3-47f7-87f5-71879022c07d

2015-02-09

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Page Count: 40

Please record the Serial, Model #, and Mark for the hood and other equipment for future reference.

Serial #: _______________________ Model #: ______________________ Mark: _________________

Installation, Operation and Maintenance Manual

Please read and save these instructions. 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! Retain instructions for future reference.

PN 452413

Canopy Type Kitchen Hoods

1Canopy Hood

2Canopy Hood

Receiving and Handling .............................................................4

Storage ..........................................................................4

Hood Weights .....................................................................4

Installation ........................................................................5

Hood Installation Overview...........................................................5

Filler Panels .......................................................................5

Hood Hanging Height ...............................................................6

Continuous Capture Plenum..........................................................6

Double Island Style Hood ............................................................6

U-Channel Strips ...................................................................6

Electrical Connections ..............................................................7

Ductwork .........................................................................7

Installation Instructions for the External Supply Plenums................................ 8 - 9

Installation Instructions for the Back Supply Plenum (BSP) ................................10

Installing the Supply Duct Collar .....................................................10

Hanging the Back Supply Unit .......................................................10

Hanging the Hood .................................................................11

Air Diffusers ......................................................................11

Enclosure Panel Installation Instructions ...............................................12

End Skirt Installation Instructions.....................................................13

Backsplash Panel Installation Instructions ......................................... 14 - 15

Duct Collar Installation Instructions for GH, GK and GX Series Hoods .......................16

Exhaust Air Balancing Baffle ........................................................17

Balancing the Kitchen Exhaust.......................................................18

Baffle Filters (GH Series) .................................................. 18 - 21

High Velocity Cartridge Filters (GK Series).................................... 22 - 23

High Efficiency Filters (GX Series) .......................................... 24 - 25

Short Circuit Hoods ..........................................................26

Fire Suppression Wiring Diagrams ................................................ 27 - 28

Overall Wiring Plan View ............................................................29

Wiring for Hood Switch Panels.......................................................30

Circuit Diagram ...................................................................31

Table of Contents

3Canopy Hood

Maintenance .....................................................................32

Grease Grabber™ Cleaning and Maintenance ...................................... 33 - 34

Filter Cleaning Frequency Chart......................................................35

Troubleshooting Guide ......................................................... 36 - 37

Replacement Parts ............................................................ 38 - 39

Warranty ........................................................................40

Table of Contents

4Canopy Hood

Upon receiving the equipment, check for both obvious and hidden damage. If damage is found, record all

necessary information on the bill of lading and file a claim with the final carrier. Check to be sure that all parts of

the shipment, including accessories, are accounted for.

STORAGE

If a kitchen hood must be stored prior to installation it must be protected from dirt and moisture. Indoor storage

is recommended. For outdoor storage, cover the hood with a tarp to keep it clean, dry, and protected from UV

(Ultra Violet) Radiation damage.

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

HOOD

MODEL

HOOD DEPTH (MULTIPLY BY LENGTH) FOR HOOD WEIGHT

3 ft.

.914 m

3.5 ft

1.067 m

4 ft

1.2192 m

4.5 ft

1.3716 m

5 ft

1.524 m

5.5 ft

1.6764 m

6 ft

1.8288 m

6.5 ft

1.9812 m

7 ft

2.1336 m

7.5 ft

2.286 m

GH, GK,

GXEW

30 lbs/ ft.

44.64

kg/m

32 lbs/ft

47.62

kg/m

35 lbs/ft

52.08

kg/m

38 lbs/ft

56.54

kg/m

40 lbs/ft

59.52

kg/m

GH, GX,

GXDW

36 lbs/ft

53.57

kg/m

38 lbs/ft

56.44

kg/m

41 lbs/ft

61.01

kg/m

44 lbs/ft

65.47

kg/m

46 lbs/ft

68.45

kg/m

GH, GK,

GXFW

40 lbs/ft

59.52

kg/m

44 lbs/ft

65.47

kg/m

48 lbs/ft

71.42

kg/m

52 lbs/ft

77.38

kg/m

GH, GK,

GXCW

48 lbs/ft

71.42

kg/m

51 lbs/ft

71.89

kg/m

54 lbs/ft

81.35

kg/m

57 lbs/ft

84.82

kg/m

GH, GK,

GXSW

44 lbs/ft

65.47

kg/m

48 lbs/ft

71.42

kg/m

52 lbs/ft

77.38

kg/m

56 lbs/ft

83.33

kg/m

GGEW

39 lbs/ft

58.03

kg/m

41 lbs/ft

61.01

kg/m

44 lbs/ft

65.47

kg/m

47 lbs/ft

69.94

kg/m

49 lbs/ft

72.91

kg/m

GGDW

45 lbs/ft

66.96

kg/m

47 lbs/ft

69.94

kg/m

50 lbs/ft

74.40

kg/m

53 lbs/ft

78.86

kg/m

55 lbs/ft

81.84

kg/m

GGFW

49 lbs/ft

72.91

kg/m

53 lbs/ft

78.86

kg/m

57 lbs/ft

84.82

kg/m

61 lbs/ft

90.77

kg/m

GGCW

57 lbs/ft

84.82

kg/m

60 lb/ft

89.28

kg/m

63 lbs/ft

93.74

kg/m

66 lbs/ft

98.21

kg/m

GGSW

53 lbs/ft

78.86

kg/m

57 lbs/ft

84.82

kg/m

61 lbs/ft

90.77

kg/m

65 lbs/ft

96.72

kg/m

GH, GK,

GXEV

52 lbs/ft

77.38

kg/m

54 lbs/ft

81.35

kg/m

56 lbs/ft

83.33

kg/m

58 lbs/ft

86.30

kg/m

61 lbs/ft

90.77

kg/m

63 lbs/ft

93.74

kg/m

GH, GK,

GXFV

61 lbs/ft

90.77

kg/m

66 lbs/ft

98.21

kg/m

68 lbs/ft

101.18

kg/m

72 lbs/ft

107.14

kg/m

75 lbs/ft

111.6

kg/m

79 lbs/ft

117.55

kg/m

GH, GK,

GXCV

81 lbs/ft

120.53

kg/m

84 lbs/ft

124.99

kg/m

87 lbs/ft

129.46

kg/m

90 lbs/ft

133.92

kg/m

GH, GK,

GXSV

66 lbs/ft

98.21

kg/m

69 lbs/ft

102.67

kg/m

72 lbs/ft

107.14

kg/m

76 lbs/ft

113.09

kg/m

79 lbs/ft

117.55

kg/m

Receiving and Handling

5Canopy Hood

NOTE: If you have a Back

Supply Plenum (BSP), this must

be installed before the hood.

Please see Page 10.

For Wall/Single Island Style

Hoods, prior to installation,

check with local authorities

having jurisdiction on clearances

to combustible surfaces, etc.

With the hood still inside its

packing crate, position the unit

beneath its installation location.

Carefully remove the packing

crate. Place some protective

material on the floor next to

the crate to avoid damaging the hood as it is tipped on its side; Fig. 1. Tip the hood carefully onto the

protective material. If you have filler panels, install them now; Fig. 2. If you have integral filler panels,

no additional installation is needed.

Front

1/2 in. threaded rod by

Bottom

Pallet

Protective Material

Fig. 1

If a Back Supply Plenum is provided, install first. Before raising hood, insert 1/2 in. (12.7 mm) diameter

threaded rod (by others) into hanger brackets on hood top. Check the engineering drawings or UL

label located on the inside of the hood for proper hood height above finished floor. Install filler panels

if needed. Raise and hang hood from adequate roof or ceiling supports All hanger brackets must be

used and the hood must be properly supported while lifting to prevent damage or distortion to the

hood. The hood must be hung level to operate properly. After hood is secured, make the exhaust duct

connections. The fire system distributor must be contacted at this time. After the fire system has been

installed, mount the enclosures, then the supply plenums. If an Horizontal Supply Plenum is provided,

it should be installed before the enclosures. The hood and accessories are now installed. Finally, make

the electrical connections from switches to fans and complete the fire system circuits as required by

the job specification.

Hood Installation Overview

HOOD

RIGHT FILLER P A NEL

BOTTOM FILLER P A NEL

T A CK-WELDED TO

HOOD BACK

5/16 IN. X 3/4 IN. BOL T S

WITH WA SHERS & NUTS

1. Uncrate the hood and lay it on the floor

with protective material between the hood

and the floor. (Fig. 1)

2. Bolt the filler panels together with 5/16 in.

bolts provided in the hardware package.

3. Position the filler panels to the hood back,

and tack-weld them into place. (Fig. 2)

4. To allow for ease of cleaning, caulk

the external seams with NSF Approved

silicone caulk (GE SCS1009, or its

equivalent). The caulk is not provided.

Fig. 2

Filler Panel Installation Instructions

Installation

6Canopy Hood

Before hanging the hoods, please verify the hood marks to make sure the correct hood is

hung on the correct side.

A double island hood is created by installing two wall style hoods back to back. Use the installation

procedure described on page 5 for single island hoods; install and level both hoods. After leveling,

secure the hoods together by tack-welding and/or bolting the rear mounting brackets. Caulk this joint

with NSF Approved silicone caulk (GE SCS1009 or its equivalent). The caulk is not provided.

HOOD FRONT

ITEM-1B

DOUBLE ISLAND CLIP

HOOD-1B

DETAIL A

DOUBLE ISLAND CLIP

SILICONE CAULK

(GE SCS1009)

HOOD-1A

INSTALLATION INSTRUCTIONS

1. AFTER HOOD IS HUNG IN POSITION AND LEVELED.

2. APPLY SILICONE CAULK TO INSIDE OF DOUBLE

ISLAND CLIP.

3. POSITION AND INSTALL CLIP BY TAPPING

INTO POSITION ALONG CLIP (FRICTION FIT).

4. CAULK EDGES TO SEAL OUT

GREASE AND ALLOW FOR EASE

OF CLEANING.

ITEM-1A

Double Island Style Hoods

Remove the support angles on the open end panels. (see

Fig. 3) Use the installation procedure described on page

4 for single island hoods; install and level both hoods.

After leveling, secure the hoods together by tack-welding

and/or bolting the top angles. Fasten the hoods together

using u-clips and bolts, (see Fig. 4). Caulk this joint

with NSF Approved silicone caulk (GE SCS1009 or its

equivalent). The caulk is not provided.

2. RAI

E ALL H

INT

APPR

PRIATE L

ATI

AND

RT PER

N PLAN

3. FASTEN TOP ANGLES TOGETHER USING 1/4 in. BOLTS & NUTS

(

BY OTHERS

4. FASTEN HOODS TOGETHER USING U-CLIPS

1/4 in. BOLT

LK ALL

EAM

ARY

AP N

INDI

ATED

HOOD FRONT

1. REM

RT AN

PEN END PANEL

OOD

ACO

RN N

2. RAI

E ALL H

INT

APPR

PRIATE L

ATI

AND

RT PER

N PLAN

3. FASTEN TOP ANGLES TOGETHER USING 1/4 in. BOLTS & NUTS

(

BY OTHERS

4. FASTEN HOODS TOGETHER USING U-CLIPS

1/4 in. BOLT

LK ALL

EAM

ARY

AP N

INDI

ATED

HOOD FRONT

1. REM

RT AN

PEN END PANEL

OOD

ACO

RN N

Fig. 3

Fig. 4

Continuous Capture Plenum Hoods

Installing U-Channel Strip

The hood hanging height is critical, hanging the hood at the incorrect height may significantly reduce

the ability for the hood to function properly and may be in violation of codes. The hood hanging height

(typically, 78 in. (198.12 cm) above the finished floor) is given on the UL label located on the inside of

the hood on the end panel. The hood must be hung level to operate properly. The grease trough is

pitched to drain into the grease container.

Hood Hanging Height

Fig. 5

1. After the hood is hung in position and

leveled, apply caulk to the inside edge

of the double island clip. (Fig. 5)

2. Position and install the clip by tapping

into position along clip (friction fit).

3. Caulk edges to seal out grease and

allow for ease of cleaning. Caulk with

NSF Approved silicone caulk

(GE SCS1009 or its equivalent). The

caulk is not provided.

HOOD FRONT

ITEM-1B

DOUBLE ISLAND CLIP

HOOD-1B

DETAIL A

DOUBLE ISLAND CLIP

SILICONE CAULK

(GE SCS1009)

HOOD-1A

INSTALLATION INSTRUCTIONS

1. AFTER HOOD IS HUNG IN POSITION AND LEVELED.

2. APPLY SILICONE CAULK TO INSIDE OF DOUBLE

ISLAND CLIP.

3. POSITION AND INSTALL CLIP BY TAPPING

INTO POSITION ALONG CLIP (FRICTION FIT).

4. CAULK EDGES TO SEAL OUT

GREASE AND ALLOW FOR EASE

OF CLEANING.

ITEM-1A

7Canopy Hood

Note: The installation of the canopy hoods shall be in accordance with NFPA 96 (latest edition),

Standard for Ventilation Control & Fire Protection of Commercial Cooking Operations.

After the hood is installed, remove all protective plastic.

Note: Greenheck does not recommend walking or standing on the hood top as damage can result. If

you must walk on the hood top, protect the hood with additional support or planks for flooring.

Ductwork

Electrical Connections

Access for wiring the hood control panel (when applicable) is provided by a junction box located on

top of the hood when the control panel is mounted in the hood, or by the switch junction box when the

control panel is mounted in the fire protection cabinet. The box is labeled “Control Voltage Wiring to

Roof Top Fan Package”. Use minimum 14 AWG copper wire. After all the wiring is completed, install

the light bulbs (light bulbs not provided; standard light bulbs up to 100 watt may be used).

Caution: For multiple hood systems that have more than 14 lights total (incandescent or fluorescent),

the hood lights must be wired to multiple circuits. Each circuit must have less than 14 lights total.

Standard Greenheck light switches shipped on hoods are rated for 15 amps and shall not have more

than 14 lights connected to them. Higher amperage switches are available upon special request.

Exhaust

As specified in NFPA 96, Ch. 7.5 (latest edition), exhaust duct systems must be constructed in the

following manner:

Materials. Ducts shall be constructed of and supported by carbon steel not less than 1.37 mm

(0.054 in.) (No. 16 MSG) in thickness or stainless steel not less than 1.09 mm (0.043 in.) (No. 18 MSG)

in thickness.

Installation: All seams, joints, penetrations, and duct to hood collar connections shall have a

liquid-tight external weld. If you have an Automatic Fire Damper please refer to that manual for

installation instructions now.

Supply

Supply ductwork (where applicable) should be connected to the hood in a manner approved by the

local code authorities.

Note: For hoods with fire dampers in the exhaust and supply duct collars, an access panel for cleaning

and inspection shall be provided in the duct. This panel shall be as close to the hood as possible but

should not exceed 18 in. (45.72 cm).

For proper installation of duct collars when they are shipped unattached, see page 16.

8Canopy Hood

HOOD STANDING SEAM

HANGING CLIP BOLTED TO PLENUM SHELL

HANGING CLIP

HOOD FRONT

"C" CLAMP

SUPPLY PLENUM SHELL

HANGER BRACKET

END VIEW

THREADED ROD

HOOD

ATTACH HANGING CLIP TO

HOOD STANDING SEAM WITH

THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A

1/4-20 SS BOLT THROUGH

THE CLIP AND HOOD STANDING

SEAM)

HANGING METHODS FOR SUPPLY PLENUMS

ASP, FSP AND VSP

TOP VIEW

HOOD

TOP VIEW

SUPPLY PLENUM

2 CLIPS ARE NEEDED

3 CLIPS ARE NEEDED

FOR PLENUMS > 96"

FOR PLENUMS <= 96"

THE THIRD CLIP IS LOCATED

IN THE CENTER OF THE PLENUM

LENGTH

THREADED ROD

OPTION #3

HANGING CLIP

OPTION #1

ON THE END OF THE HOOD

HANGING CLIP COULD BE 23.5" FROM

END IF THERE IS A UTILITY CABINET

OPTION #1

THE HOOD AND IS MOUNTED TO THE ASP

HOOD UP CANTILEVERS OVER THE END OF

THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE

HANGER BRACKETS

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

OPTION #1 = HANGING CLIP

OPTION #2 = UNI-STRUT

OPTION #3 = THREADED ROD

OPTIONAL UTILITY CABINET

NOTE: SUPPLY PLENUMS ARE STANDARDLY SUPPLIED WITH HANGING CLIPS (OPTION 1),

IF OPTION #1 IS NOT APPLICABLE

USE OPTIONS 2 0R 3

SUPPLIED BY OTHERS

11.5

23.5

HOOD STANDING SEAM

HANGING CLIP BOLTED TO PLENUM SHELL

HANGING CLIP

HOOD FRONT

"C" CLAMP

SUPPLY PLENUM SHELL

HANGER BRACKET

END VIEW

THREADED ROD

HOOD

ATTACH HANGING CLIP TO

HOOD STANDING SEAM WITH

THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A

1/4-20 SS BOLT THROUGH

THE CLIP AND HOOD STANDING

SEAM)

HANGING METHODS FOR SUPPLY PLENUMS

ASP, FSP AND VSP

TOP VIEW

HOOD

TOP VIEW

SUPPLY PLENUM

2 CLIPS ARE NEEDED

3 CLIPS ARE NEEDED

FOR PLENUMS > 96"

FOR PLENUMS <= 96"

THE THIRD CLIP IS LOCATED

IN THE CENTER OF THE PLENUM

LENGTH

THREADED ROD

OPTION #3

HANGING CLIP

OPTION #1

ON THE END OF THE HOOD

HANGING CLIP COULD BE 23.5" FROM

END IF THERE IS A UTILITY CABINET

OPTION #1

THE HOOD AND IS MOUNTED TO THE ASP

HOOD UP CANTILEVERS OVER THE END OF

THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE

HANGER BRACKETS

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

OPTION #1 = HANGING CLIP

OPTION #2 = UNI-STRUT

OPTION #3 = THREADED ROD

OPTIONAL UTILITY CABINET

NOTE: SUPPLY PLENUMS ARE STANDARDLY SUPPLIED WITH HANGING CLIPS (OPTION 1),

IF OPTION #1 IS NOT APPLICABLE, USE OPTIONS 2 0R 3

SUPPLIED BY OTHERS

11.5

23.5

SUPPLY PLENUM SHELL

HOOD FRONT

HANGING CLIP

2.120

1.000 147.0°

57.4°

1.000

Form Down 147°

Form Up 57°

1.375

2.1251.000

3.000

0.563

0.750

4.500

.500 x .375

SLOT (3 PLACES)

0.625

1.500

0.625

Supply Plenum Clip

Using the Uni-strut

1. The uni-strut (supplied by others) that holds

the hood up cantilevers over the end of the

hood and is mounted to the supply plenum

hanger brackets.

HOOD STANDING SEAM

HANGING CLIP BOLTED TO PLENUM SHELL

HANGING CLIP

HOOD FRONT

"C" CLAMP

SUPPLY PLENUM SHELL

HANGER BRACKET

END VIEW

THREADED ROD

HOOD

ATTACH HANGING CLIP TO

HOOD STANDING SEAM WITH

THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A

1/4-20 SS BOLT THROUGH

THE CLIP AND HOOD STANDING

SEAM)

HANGING METHODS FOR SUPPLY PLENUMS

ASP, FSP AND VSP

TOP VIEW

HOOD

TOP VIEW

SUPPLY PLENUM

2 CLIPS ARE NEEDED

3 CLIPS ARE NEEDED

FOR PLENUMS > 96"

FOR PLENUMS <= 96"

THE THIRD CLIP IS LOCATED

IN THE CENTER OF THE PLENUM

LENGTH

THREADED ROD

OPTION #3

HANGING CLIP

OPTION #1

ON THE END OF THE HOOD

HANGING CLIP COULD BE 23.5" FROM

END IF THERE IS A UTILITY CABINET

OPTION #1

THE HOOD AND IS MOUNTED TO THE ASP

HOOD UP CANTILEVERS OVER THE END OF

THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE

HANGER BRACKETS

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

OPTION #1 = HANGING CLIP

OPTION #2 = UNI-STRUT

OPTION #3 = THREADED ROD

OPTIONAL UTILITY CABINET

NOTE: SUPPLY PLENUMS ARE STANDARDLY SUPPLIED WITH HANGING CLIPS (OPTION 1),

IF OPTION #1 IS NOT APPLICABLE, USE OPTIONS 2 0R 3

SUPPLIED BY OTHERS

11.5

23.5

Installing External Supply Plenums

Fig. 6

Fig. 7

Fig. 8

Using the Supply Plenum Clip

Note: The supply plenum is provided with

plenum clips that assist in hanging the plenum.

The plenum should not be hung only with the

plenum clips, threaded rod or uni-strut must

also be used.

1. Bolt the hanging clip to the supply plenum.

Two clips are needed for plenums less than

96 in. (243.84 cm) long and three for plenums

greater than 96 in. (243.84 cm). The third clip

is located in the center of the plenum length.

If there is a utility cabinet, the hanging clip

should be 23.5 in. (59.69 cm) from the end to

the hood.

2. Using the c-clamps provided, clamp the

supply plenum hanging clip to the hood

standing seam. Option: Drill and bolt a

1/4-20 SS bolt through the clip and hood

standing seam.

9Canopy Hood

ATTACHED AIR CURTAIN CANOPY STYLE HOOD ATTACHED AIR CURTAIN CANOPY STYLE HOOD

BACKSUPPLY BACKSHELF HOODBACKSUPPLY CANOPY STYLE HOODBACKSUPPLY CANOPY STYLE HOOD

VARIABLE SUPPLY PLENUM CANOPY STYLE HOOD

ATTACHED AIR CURTAIN CANOPY STYLE HOOD ATTACHED AIR CURTAIN CANOPY STYLE HOOD

BACKSUPPLY BACKSHELF HOODBACKSUPPLY CANOPY STYLE HOODBACKSUPPLY CANOPY STYLE HOOD

VARIABLE SUPPLY PLENUM CANOPY STYLE HOOD

ASP - Air Curtain Supply Plenum

HSP or VSP - Variable Supply Plenum

1. Insert 1/2 in. (12.7 mm) diameter threaded rod (by others) into

hanger brackets on the supply plenum top. Raise and hang

the external supply plenum from adequate roof or ceiling

supports.

2. The external supply plenum should be resting lightly against

the hood. The hood is used to position the plenum only, it is

not intended to support the plenum. All hanger brackets must

be used and the plenum must be properly supported while

lifting to prevent damage or distortion. The supply plenum

must be hung level to operate properly.

(Optional fastening of supply plenum to hood. See directions

below).

3. It is recommended that caulk be applied at the mating seams

and surfaces of the plenum, the hood, and the wall. If the

supply plenum is next to a wall, you will also need to caulk

around the surface next to the wall. Caulk the joints with NSF

Approved silicone caulk (GE SCS1009, or its equivalent). The

caulk is not provided.

Installing the Supply Duct Collar to the Plenum

1. Place the duct collar(s) over the opening, fastening with tack-

welds at 1 to 2 in. (2.54 to 5.08 cm) intervals, or sheet metal

screws at 3 to 6 in. (7.62 to 15.24 cm) intervals.

External Supply Plenum Weights, Dimensions, and Supply Rates

Fig. 10

Fig. 9

Using the UL Listed Fastener Provided

1. Drill a 9/32 in. hole for the 1/4 in. bolt from the inside of the supply plenum to

inside the hood. Fasteners are to be located max. 6 in. (15.24 cm) from the

end of the hood with max. spacing between bolts 36 in. (91.44 cm)

DO NOT i N c l u D e u T i l i T y c a b i N e T s O r f i l l e r s w h e N figur i N g b O l T p l a c e m e N T .

DO NOT b O l T T h e s u p p l y p l e N u m T O a f i r e /u T i l i T y c a b i N e T .

2. Push bolt through hole, attach the washer and nut.

3. Hand tighten, then use a wrench until fully tightened. Caulk around bolts

from inside of hood as necessary.

HOLE SIZE 9/32 in.

Installation instructions for the AC3 fastener:

1) Create a 9/32 in. hole for ºî bolt.

2) Install bolt through hole.

3) Install appropriate washer (1/4 in.)

4) Install nut

7) Hand tighten, then use a wrench until tightened.

HOOD

1/4 - 20 UNC - 2A

SS BOLT

1/4 IN. SS NUT

SS FLAT WASHER

Fig. 11

External Supply

Plenum Type

Weight Width Height Length per

section Recommended

Supply Rate

(lbs/ft) (kg/ft) (in) (mm) (in) (mm) (ft) (m)

Back Supply 35.0 15.878 6 152.4 Variable Variable 3 to 16 .91 to

4.88

145 cfm/ft

(246.36 m3/hr)

Air Curtain Supply

 •14inch 9.5 4.31 14 355.6 10 254 3 to 16 .91 to

4.88

110 cfm/ft

(186.89 m3/hr)

Air Curtain Supply

 •24inch 12.5 5.67 24 609.6 10 254 3 to 16 .91 to

4.88

145 cfm/ft

(246.36 m3/hr)

Variable Supply 16.0 7.26 12 304.8 18 457.20 3 to 16 .91 to

4.88

curtain 0-80 cfm/ft

(0-135.92 m3/hr)

face 80-160 cfm/ft

(135.92 -271.84 m3/hr)

Horizontal Supply 14.0 6.35 12 304.8 18 457.20 3 to 16 .91 to

4.88

150 cfm/ft

(254.85 m3/hr)

10 Canopy Hood

• ThesefastenersaretohelpmaintainthelocationoftheBackSupply,andarenotintendedto

hold the weight of the Back Supply Unit.

• Thefastenersshouldnotinterferewiththeremovableairdiffusers.

• The31.25in.(79.375cm)heightisbaseduponthecanopyhoodhangingheightof78in.

(198.12 cm) from the finished floor to the bottom of the hood.

L (MODULE LENGTH)

L/2

L (MODULE LENGTH)

L/4

STEP 1

CENTERED ON WIDTH OF THE SUPPLY,

CUT (2) 4 in. X 24 in. OPENINGS AT

THE SUGGESTED LOCATIONS ABOVE

(IF MODULE > 6 ft.)

THE SUGGESTED LOCATION ABOVE

CUT (1) 4 in. X 24 in. OPENING AT

CENTERED ON WIDTH OF THE SUPPLY,

(IF MODULE < 6 ft.)

STEP 1

4 in. TO 6 in.

FASTEN WITH SCREWS, OR TACK WELDS EVERY

PLACE THE DUCT COLLAR OVER THE OPENING,

STEP 2

Fig. 13

• The4in.(10.16cm)

high duct collar is to

be attached to the

back supply.

5. Hang the back supply plenum from the ceiling.

(The back supply plenum needs to be mounted 31.25 in. (79.375 cm) above the floor (based upon a

canopy hood that will be hung at 78 in. (198.12 cm) above the finished floor. This is measured from

the lowest rear edge of the back supply plenum to the finished floor. Leave 6 to 10 in. (15.24 to

25.4 cm) of space below the plenum for access to the air diffusers.)

6. Fasten the Back Supply to the wall, going through the lower Back Supply wall. (Fig. 15)

L (MODULE LENGTH)

L/2

L (MODULE LENGTH)

L/4

STEP 1

CENTERED ON WIDTH OF THE SUPPLY,

CUT (2) 4 in. X 24 in. OPENINGS AT

THE SUGGESTED LOCATIONS ABOVE

(IF MODULE > 6 ft.)

THE SUGGESTED LOCATION ABOVE

CUT (1) 4 in. X 24 in. OPENING AT

CENTERED ON WIDTH OF THE SUPPLY,

(IF MODULE < 6 ft.)

STEP 1

4 in. TO 6 in.

FASTEN WITH SCREWS, OR TACK WELDS EVERY

PLACE THE DUCT COLLAR OVER THE OPENING,

STEP 2

Fig. 12

Fig. 14

Installing the Back Supply Plenum

Hanging the Back Supply Plenum

Installing the Supply Duct Collar

1. Find the center of the back supply plenum.

2. If the back supply plenum is less than 9 ft. 10 in. (299.72 cm) long,

cut opening at the suggested location, centering the opening over

the center of the back supply plenum. (Fig. 12)

3. If the back supply plenum is greater than 9 ft. 10 in. (299.72 cm)

long, divide the length of the back supply by four. This will give you

the center of each half. Cut openings at the suggested location,

centering the duct collar over the center measurement of each half.

(Fig. 13)

4. Place the duct collar(s) over the opening, fastening with screws or

tack-welds every 4 to 6 in. (10.16 to 15.24 cm). (Fig. 14)

L (MODULE LENGTH)

L/2

L (MODULE LENGTH)

L/4

STEP 1

CENTERED ON WIDTH OF THE SUPPLY,

CUT (2) 4 in. X 24 in. OPENINGS AT

THE SUGGESTED LOCATIONS ABOVE

(IF MODULE > 6 ft.)

THE SUGGESTED LOCATION ABOVE

CUT (1) 4 in. X 24 in. OPENING AT

CENTERED ON WIDTH OF THE SUPPLY,

(IF MODULE < 6 ft.)

STEP 1

4 in. TO 6 in.

FASTEN WITH SCREWS, OR TACK WELDS EVERY

PLACE THE DUCT COLLAR OVER THE OPENING,

STEP 2

11 Canopy Hood

Before hanging the hood according to the

hood installation instructions, please check the

following:

1. Make sure the back supply plenum is

properly secured, as described in steps 5

and 6, page 10.

2. If the ductwork for the back supply will not

interfere with the hood installation, it should

be connected now.

3. Any filler panels should be attached to the

hood before the hood installation.

See page 5 for instructions.

4. Lift the hood, and position it so the filler

panels are resting lightly on the top outside

edges of the back supply. The back supply

is used to position the hood only, it is not

intended to hold any hood weight. (Fig. 16)

5. Connect the remaining ductwork for the

back supply and the hood. It is recommended

that caulk be applied at the mating seams

and surfaces of the back supply, the hood,

and the wall.

HANG THE HOOD

EYEBROW STYLE HOOD

CANOPY STYLE HOOD

INSTRUCTIONS, THE HOOD MAY BE FASTENED TO THE BACKSUPPLY.

SEAMS/SURFACES OF THE BACKSUPPLY, THE HOOD, AND THE WALL.

5. CONNECT REMAINING DUCTWORK FOR THE BACKSUPPLY AND THE

HOOD. CAULK IS RECOMMENDED TO BE APPLIED AT THE MATING

4. LIFT THE HOOD; POSITION IT SO THE TOP OF THE

HOOD IS LEVEL WITH THE TOP OF THE BACKSUPPLY; AFTER

THE HOOD IS HUNG FROM THE CEILING AS PER IT'S INSTALLATION

1. THE HOOD IS TO BE HUNG AS PER THE HOODS INSTALLATION

SHOULD BE CONNECTED BEFORE THE HOOD IS HUNG.

3. DUCTWORK FOR THE BACKSUPPLY; IF IT WILL NOT INTERFERE,

2. BEFORE THE HOOD IS HUNG THE BACKSUPPLY MUST BE SECURED

INSTRUCTIONS AND THE FOLLOWING.

PROPERLY, AS DESCRIBED IN "STEP 3 in.

STEP 4

Fig. 16

STEP 5

Air Diffusers

(A) Insert the air diffusers at an angle from the bottom.

(B) Rotate the diffusers so the forms are downward.

Canopy Style Hood

Proximity Style Hood

Removable Air Diffusers

The air diffusers, located at the bottom of the back

supply (Fig. 17), will need to be cleaned as often as the

application dictates. Inspect periodically to determine

the cleaning schedule.

1. To clean the air diffusers, unfasten the screws.

Remove the air diffusers from the Back Supply

Unit, and wash in the sink or dishwasher.

2. Insert the air diffusers at an angle from the bottom,

and rotate so the forms are downward. Rest the

diffuser on the internal angles. (Fig. 18)

3. Refasten with the stainless steel screws.

Fig. 17

STEP 5

Air Diffusers

(A) Insert the air diffusers at an angle from the bottom.

(B) Rotate the diffusers so the forms are downward.

Canopy Style Hood

Proximity Style Hood

Removable Air Diffusers

Fig. 18

Air Diffusers

Hanging the Hood

STEP 3 Furnished by Others

0.500 in. Threaded &

0.500 in. Threaded Nuts

(Furnished by Others)

Hanger Bracket Detail

1) Hang Backsupply Modules from the

ceiling (the example shows the module

being supported with threaded rod)

The backsupply is to be 31.25 in. from the

ﬂoor. This is measured from the lowest

rear edge of the backsupply module to the

ﬁnished ﬂoor.

2) Fasten backsupply to wall through the

lower backsupply wall. These fasteners

are to help maintain location of the

backsupply, and are NOT intended to hold

any weight of the unit. Fasteners should

not interfere with the removable air diffuser.

31.25 in.

Critical

Dimension

Fasteners holding the

back supply to the wall

Fig. 15

12 Canopy Hood

Before installing the enclosure panels, make sure the hood is hung in position with all the ductwork

attached and electrical connections completed.

1. Position the end enclosure panels on the hood, and clamp into place with clamps provided or tack-

weld the panels into place (Fig 19).

2. Fasten the end enclosure panels to the wall, method depends on wall construction. (fasteners are

not provided)

If the hood is a double island, bolt the end enclosure panels together. (fasteners are not provided)

3. Position the front enclosure panel(s) on the hood, and bolt to the end enclosure panels with the

5/16 in. bolts provided in the hardware package.

4. Tack-weld or clamp the front enclosure panel(s) to the hood. If clamps are used, they must be

positioned 4 in. (100 mm) from the ends, and in the center of the front enclosure panel.

5. To allow for ease of cleaning, caulk the external seams with NSF Approved silicone caulk

(GE SCS1009, or its equivalent). The caulk is not provided.

6. Installation instructions may not be applicable for concrete ceilings.

Fig. 19

Installing Enclosure Panels

13 Canopy Hood

Fig. 20

1. After the hood is hung in position, slide the hemmed form on top of the end skirt onto the end

panels of the hood.

2. Drill a hole in the hood end panel to line up with the hole in the end skirt. Attach the end skirt with

a 1/4 in. bolt and cap nut to the inside of the hood, or tack-weld the end skirt to the hood.

3. Position the end skirt against the wall and attach. The method depends on the wall construction.

(fasteners for this are not provided)

4. Caulk the internal joint formed by the end skirt and the hood end panel with NSF Approved silicone

caulk (GE SCS1009 or its equivalent). The caulk is not provided.

5. To allow for ease in cleaning, also caulk all the external seams.

Installing End Skirts

14 Canopy Hood

Fig. 21

Installing Backsplash Panels

MATERIAL GAUGE — STAINLESS

INSULATION — 1 IN. (25.4 MM)

FLAT BACKSPLASH PANEL

INSULATED BACKSPLASH PANEL

WALL

NOTE: PANELS UP TO 46 IN. (1168.4 MM) WIDE SHIP IN ONE PIECE; OVER 46 IN. (1168.4 MM) IN MULTIPLE PIECES.

NOTE: PANELS UP TO 48 IN. (1219.2 MM) WIDE SHIP IN ONE PIECE; OVER 48 IN. (1219.2 MM) IN MULTIPLE PIECES.

LENGTH

1 IN. (25.4 MM)

HEIGHT

LENGTH

HEIGHT

LENGTH QTY

Inches Millimeters

<= 48 <= 1219.2 1

>48<=94 >1219.2<=2387.6 2

>94<=141 >2387.6<=3581.4 3

>141<=188 >3581.4<=4775.2 4

>188<=235 >4775.2<=5969 5

LENGTH QTY

Inches Millimeters

<= 46 <= 1168.4 1

>46<=91 >1168.4<=2311.4 2

>91<=136 >2311.4<=3454.4 3

>136<=181 >3454.4<=4597.4 4

>181<=226 >4597.4<=5740.4 5

Fig. 22

15 Canopy Hood

1. After the hood is hung in position, slide the flat flange of the backsplash panel behind the back of

the hood.

Note: If the backsplash panel length is greater than 46 in. (116.84 cm), it will be shipped in multiple

pieces.

2. After the backsplash panel has been positioned, drill holes in the panel and fasten to the wall.

(fasteners provided by others).

Note: The holes should be spaced to adequately secure the panel to the wall.

3. Caulk the joints between the hood and the backsplash panel with NSF Approved silicone caulk

(GE SCS1009, or its equivalent). The caulk is not provided.

4. Caulk the joint between the backsplash panels when multiple panels are required, with NSF

Approved silicone caulk (GE SCS1009, or its equivalent). The caulk is not provided.

LD BE

ED T

UATELY SECURE THE PANE

TO THE WALL STUDS

(

HOLE SPACIN

ND FASTENERS PROVIDED BY OTHERS

)

PLA

H PANE

HOOD END PANEL

D FR

NT PANE

LIDE FLAN

BEHIND BA

F THE H

OOD

N VIE

F BA

PLA

PANEL

VERLA

Fig. 23

Installing Backsplash Panels

16 Canopy Hood

HOOD SECTION VIEW

DEFLECTOR TO BE PLACED CENTERED

UNDER THE SUPPLY DUCT COLLAR

PPL

FIRE DAMPER

INTERNAL

PPL

HAMBE

LATE

PPLY PLEN

EXHA

UST

APT

PPLY L

ATI

N DETAIL F

RTAIN AND

MBINATI

Hanger Bracket

Exhaust Plenum

Duct Cut Out Area

Supply Plenum

Hood Length

Hood Width

Front of Hood

Exhaust Plenum

8.00 8.00

8.00

3.00

16.00

14.00

8.00

1.00

12.00

INU

UID

DUC

N I

DUC

NUM

UPP

NUM

DUC

LABELED SUB-ASSEMBLY FOR EXHAUST HOOD WITHOUT EXHAUST DAMPER PART NO. DC.

2. U.L. LISTED HOOD ASSEMBLY TO BE USED ONLY WITH GREENHECK FAN CORP.

CENTER OF HOOD LENGTH TO CENTER OF DUCT CONNECTION.

NOTES: 1. EXHAUST DUCT CONNECTION TO BE LOCATED WITH IN 48" FROM

CIN

UPP

DUC

D WI

UPP

DUC

Hanger Bracket

Exhaust Plenum

Duct Cut Out Area

Supply Plenum

Hood Length

Hood Width

Front of Hood

Exhaust Plenum

8.00 8.00

8.00

3.00

16.00

14.00

8.00

1.00

12.00

Back View of the Hood Fig 25

Fig. 26 Fig. 27

Fig. 28

Note: UL listed hood

assembly to be used

only with Greenheck

Fan Corp. labeled

subassembly for

exhaust hood without

exhaust damper part

Number DC.

Hood Top

1. The exhaust duct

connection needs to

be located within 48 in.

(121.92 cm) from the

center of the hood

length to the center of

the duct connection.

(see Fig. 24, back view

Fig. 25)

2. The exhaust duct

connection is to be

a continuous liquid-

tight weld. Weld with

a non-ferrous filler

wire, such as silicon

bronze or stainless

steel filler wire. Protect

all stainless steel areas

from weld splatter.

3. The supply duct

connection is tack-

welded at 1 to 2 in.

(2.54 to 5.08 cm)

intervals, or sheet metal

screws at 3 to 6 in.

(7.62 cm to 15.24 cm)

spacing to the hood.

(Fig. 26)

4. The deflector is

centered under the

supply duct collar.

(Fig. 28)

5. For hoods that are

insulated, the edges of

the insulation need to

be taped after the hole

is cut, (the insulation

tape is to be provided

by others).

6. On combination hoods,

make sure the fire

damper is located over

the internal supply

chamber. (Fig. 29)

Top View of the Hood Fig. 24

Installing Duct Collars

17 Canopy Hood

This is a guide to assist in determining if multiple hoods on one fan can be balanced to have equal

static pressure. For multiple hoods on one fan to achieve their designed exhaust flow, all of the hoods

must have equal static pressure at their designed exhaust flow.

The laws of physics force the static pressure for each branch of a duct system on one fan to always be

equal. This will happen by the flow rate increasing in low static branches and decreasing in high static

branches until the static pressure is equal in all branches.

Checking for Balance

Every hood with Exhaust Air Balancing Baffles (EABB) has a range for its static pressure. The low

number in this range is given by the standard calculation for hood static. (Static that is printed with

the CAPS submittal). The maximum increase above the low number can be calculated from the duct

velocity at the low static, (also given on CAPS submittal). This is then added to the low number to get

the highest static pressure possible with an EABB.

The maximum potential increase in static is given in the graph, or can be calculated from:

Max. Increase = 0.00000036 x (Duct velocity)2

After the range for each hood is calculated,

it should be compared to the hood with the

highest static pressure. If the highest hood

falls inside of the range, then the hoods can be

balanced with the EABB. If it is higher than the

range, the hoods cannot be balanced.

Example 1:

Hood 1: Ps = 0.58 in. wg

Duct Velocity = 1900 FPM

Hood 2: Ps = 0.44 in. wg

Duct Velocity = 1800 FPM

Hood 2 has the lower Ps, at 1800 FPM the maximum increase in Ps is 1.17. The range for Hood 2 is

0.44 to 1.61. Hood 1 is less than 1.61 so these hoods can be balanced.

Example 2:

Hood 3: Ps = 2.00 in. wg

Duct Velocity = 2000 FPM

Hood 4: Ps = 0.44 in. wg

Duct Velocity = 1500 FPM

Hood 4 has the lower Ps, at 1500 FPM the maximum increase in Ps is .81. The range for Hood 4 is 0.44

to 1.25. Hood 3 is higher than 1.25 so these hoods cannot be balanced.

Note 1: For many systems, an EABB may not be needed on the hood that has the highest static pressure. The

exception to this is if the individual ductwork has uneven static pressures.

Note 2: When sizing the fan, use the static pressure from the highest hood and sum the CFM from all the hoods.

Maximum Increase in Static Pressure for Exhaust Air Balancing Baffle

(Fully Closed)

0.5

1.5

2.5

3.5

4.5

500 1000 1500 20002500 3000 3500

Duct Velocity FPM

Increase in Collar Staitc Pressure

Exhaust Air Balancing Baffles (EABB)

18 Canopy Hood

Baffle Filter Style Hoods

A. Exhaust:

With all the filters in place, determine

the total hood exhaust volume with a

rotating vane anemometer as follows:

1. All cooking equipment should

be on.

2. Measure the velocities

Velocity measurements should

be taken at five locations per

filter. These must be over a filter

slot as in Fig. 29.

tat

ete

H/4

H/2

H/4

Fig. 29

A. To determine the proper dining room air balance:

1. Refer to engineering drawings to determine total exhaust CFM from dining areas.

(Exhaust fans, heating and air conditioning units, restrooms, etc.)

2. Determine the total CFM of make-up air supplied to dining area.

3. Subtract #1 from #2 above. If the result is a negative number, a negative pressure is present

in the dining area. In this case, kitchen exhaust odors could be drawn from the kitchen to the

dining area. Therefore, exhaust or supply air should be adjusted to provide a slight positive

pressure in the dining area.

B. To determine proper kitchen air balance:

1. Refer to engineering drawings to determine total exhaust from the kitchen area.

(Exhaust hoods, dishwasher hoods, etc.)

2. Determine total CFM of make-up air supplied to kitchen area.

(Make-up air hoods, heating and air conditioning units, etc.)

3. Subtract #1 from #2 above. The result should be a negative number. If the result is a positive

number, a positive pressure is present in the kitchen area. Kitchen odors could be forced into

the dining area. Also, a positively balanced kitchen area can adversely affect the performance

of the exhaust hood.

Caution: According to NFPA 96, Ch. 8-3 Replacement Air: Replacement air quantity shall be adequate

to prevent negative pressures in the commercial cooking area(s) from exceeding 4.98 kPa (0.02 in.

water column).

Balancing the Kitchen Exhaust System

Testing Hood Air Volume

Nominal Filter Size

19 Canopy Hood

255

(4663.44 m/h)

248

(4535.42 m/h)

256

(4681.73 m/h)

240

(4389.12 m/h)

250

(4572 m/h)

Measure the velocity of each location.

A digital 2.75 in. (70 mm) rotating

vane anemometer or equivalent

is suggested. The center of the

anemometer should be held 2 in.

(50 mm) from the face of the filters as

shown in Fig. 30. It is helpful to make

a bracket to keep the anemometer

at the 2 in. (50 mm) distance and

parallel to the filter. Both squareness

and distance are very important for

accuracy.

Calculate the average velocity for the filter.

3. Determine the filter’s conversion factor from the table.

4. Calculate the filter’s volume in CFM (m3/hr) by multiplying the average velocity by the

conversion factor.

5. Calculate the hood’s volume by repeating the process for the remaining filters and summing the

individual filter volumes.

2 in.

H/4

H/2

H/4

Airﬂow

Rotating Vane Anemometer

Fig. 30

Nominal Filter Size (H x L) Imperial

Conversion Factor

Metric

Conversion Factor

Inches Millimeters

16 x 16 400 x 400 1.63 .157

16 x 20 500 x 400 2.13 .198

20 x 16 400 x 500 1.90 .177

20 x 20 500 x 500 2.48 .230

Total hood volume = (Filter 1 Volume) + (Filter 2 Volume) + (Filter 3 Volume)

= 474.6 + 455.4 + 470.1 = 1400.1 cfm

= 809 + 880 + 799 = 2488 m3/hr

For a nominal filter size of 20 x 16, the conversion factor is 1.90 Imperial (.177 Metric)

Volume for one filter = Conversion Factor x Average Velocity

= 1.90 x 249.8 fpm = 474.6 cfm

= .177 x 4568 m/hr = 809 m3/hr

Example: Exhaust Only Hood with three 20 x 16 Filters

Measured velocities in fpm for one 20 x 16 Filter

Average Velocity = Sum of Velocity Readings

Number of Readings

(Imperial) =255 + 250 + 256 + 248 + 240

5 =249.8 fpm

(Metric) =4663 + 4572 + 4681 + 4535 + 4389

5 =4568 m/hr

20 Canopy Hood

B. Supply (If Applicable):

Example for Perforated Face Supply

1. Hood set up

If the make-up air unit has a temperature control, it should be used to keep the supply air at the

desired room discharge air temperature.

2. Measure Velocities

Divide the perforated face panel into a grid of equal areas, each approximately 4 in. (100 mm)

square.

Measure the velocity at the center of each grid area. A digital 2.75 in. (70 mm) rotating vane

anemometer or equivalent is suggested. The center of the anemometer should be held tight to

the face of the panel, and parallel to the filter. Both squareness and distance are important for

accuracy. Calculate the average velocity of the panel.

3. Measure the length, height, and width of the perforated face panel.

4. Calculate the perforated face panel volume in CFM by using the following formula:

Volume = Avg. Velocity * Length (in.) * Height (in.) * 0.005

Volume = Avg. Velocity * Length (m) * Height (m) * 0.72

5. Calculate the system’s volume by repeating the process for the remaining panels and adding

the individual panel volumes together.

Total system volume = (Panel 1 Volume) + (Panel 2 Volume) + (Panel 3 Volume)

= 606.4 + 614.3 + 593.8 = 1814.5 cfm

= 1029 + 1044 + 1009 = 3082 m3/hr

Example: Face Supply Hood with three 28 in. (.711 m) Perforated Panels

Measured velocities in FPM for one perforated panel

Average Velocity = Sum of Velocity Readings

Number of Readings

(Imperial) =260 + 250 + … + 265 + 260

28 =270.7 fpm

(Metric) =4755 + 4572 + … + 4846 + 4755

28 =4951 m/hr

Measure Length and Height = 28 in. (.711 m) long perforated panels x 16 in. (.406 m) high

Volume for one panel = Conversion

Factor xAverage

Velocity x Length x Height

= 0.005 x 270.7 fpm x 28 x 16 = 606.4 cfm

= 0.72 x 4951 m/hr x .711 x .406 = 1029 m3/hr

Filter Readings (fpm)

260 250 255 260 250 255 265

270 275 270 280 265 265 270

290 285 280 280 275 290 295

285 275 280 260 270 265 260

Filter Readings (m/hr)

4755 4572 4663 4755 4572 4663 4846

4938 5029 4938 5121 4846 4846 4938

5304 5212 5121 5121 5029 5304 5395

5212 5029 5121 4755 4938 4846 4755

21 Canopy Hood

14 in.

17.25 in.

10 in.

2.75 in.

6 in.

2.75 in.

14 in.

Fig. 32

Fig. 33

Fig. 34

Nominal Filter Size (H x L) Imperial

Conversion Factor

Metric

Conversion Factor

Inches Millimeters

16 x 16 400 x 400 1.66 .154

16 x 20 400 x 500 2.10 .195

20 x 16 500 x 400 1.96 .182

20 x 20 500 x 500 2.40 .223

Testing Hood Air Volume

10 in.

Baffle Filters Style Hoods with the Shortridge Meter

A. Exhaust

With all the filters in place, determine the total hood exhaust

volume with a Shortridge meter as follows:

1. All cooking equipment should be on. If the hood has

internal short circuit make-up air, it should be turned off.

2. Measuring Velocities

 • SetuptheShortridgemeter.

 • For20in.(500mm)widefilters,positionthegridas

shown in Fig. 32 and 33. Average two measurements.

 • For16in.(400mm)widefilterspositionthegridas

shown in Fig. 34.

 • Takevelocityreadingsforeachfilter.

3. *Calculate each filter’s volumetric flow rate by summing

the flow rate of each individual filter in the hood.

4. *Calculate the total hood’s volumetric flow rate by

summing the flow rate of each individual filter in the hood.

*Note: For best accuracy multiply the velocity of each filter by its

conversion factor and sum the flow rates. Averaging the velocity

measured for all filters may cause error.

Example: Measured velocities for 20 x 20 filter = 185 and 189 fpm

Average Velocity = Sum of Velocity Readings

Number of Readings

(Imperial) =185 + 189

2=187.0 fpm

(Metric) =3383 + 3456

2=3420 m/hr

Flow rate for one filter = Conversion

Factor xAverage

Velocity

= 2.40 x 187.0 fpm = 448.8 cfm

= .223 x 3420 m/hr = 763 m3/hr

Total hood flow rate = (Filter 1

Flow Rate) +…+ (Filter X

Flow Rate)

=448.8 + 457.8 + 437.5 + 444.8 = 1788.9 cfm

=763 + 778 + 743 + 756 = 3040 m3/hr

Fig. 31

22 Canopy Hood

Rotation Vane

nemometer

2 in.

Fig. 35

Fig. 36

Cartridge Filter Size Imperial

Conversion Factor

Metric

Conversion Factor

16 in. (400 mm) high with 4 in. (100 mm) high inlet 1.63 1/ft35.35 1/m3

20 in. (500 mm) high with 4 in. (100 mm) high inlet 2.15 1/ft37.05 1/m3

16 in. (400 mm) high with 7 in. (120 mm) high inlet 1.24 1/ft34.07 1/m3

20 in. (500 mm) high with 7 in. (120 mm) high inlet 1.58 1/ft35.18 1/m3

Filter Readings (fpm)

470 440 425

482 430 453

455 431 441

399 439 465

Filter Readings (m/hr)

8595 8047 7772

8815 7864 8284

8321 7882 8065

7297 8028 8504

High Velocity Cartridge Filters

A. Exhaust

With all the filters in place, determine the total hood exhaust

volume with a rotating vane anemometer as follows:

1. All cooking equipment should be on. If the hood has

internal short circuit make-up air, it should be turned off.

2. Measuring Velocities

 • Velocitymeasurementshouldbetakenatthreelocationsperfilter.

These must be over the inlet opening as shown in Fig. 35.

 • Measurethevelocityofeachlocation.Adigital2.75in.(70mm)

rotating vane anemometer or its equivalent is suggested. The center

of the anemometer should be held 2 in. (50 mm) from the face of

the filters as in Fig. 31. It is helpful to make brackets to keep the

anemometer at the 2 in. (50 mm) distance and parallel to the filter.

Both squareness and distance are important for accuracy.

3. Calculate the average slot velocity.

4. Calculate the CFM per linear foot by dividing the average velocity by a

conversion factor listed in the following table.

5. Calculate the hood’s exhaust volume by multiplying the CFM per linear

foot by the length of hood.

1/4 Width

1/2 Width

1/2 Height

Inlet Height

Filter Height

Example:

Measure the slot velocities in fpm for a 9 ft. (2.74 m) hood with four 20 x 20 in. (500 x 500 mm)

filters with standard opening, three readings per filter.

Average slot velocity = Sum of Velocity Readings

Number of Readings

(Imperial) =5330

12 =444.2 fpm

(Metric) =97474

12 =8123 m/hr

CFM per linear foot = Average Slot Velocity

Conversion Factor

=444.2 fpm

2.15 =206.6 cfm/linear foot

=8123 m/hr

7.05

= 1152 m3/hr

Hood exhaust volume = CFM/linear foot (m3/hr / m) x Hood Length

= 206.6 x 9 ft. = 1859.4 cfm

= 1152 x 2.74 m = 3156 m3/hr

23 Canopy Hood

1/2 width

1/2 height

Fig. 38

Nominal Filter Size (H x L) Imperial

Conversion Factor

Metric

Conversion Factor

Inches Millimeters

16 x 16 400 x 400 1.22 ft2.113 m2

16 x 20 400 x 500 1.67 ft2.155 m2

20 x 16 500 x 400 1.21 ft2.112 m2

20 x 20 500 x 500 1.50 ft2.139 m2

High Velocity Cartridge Filters

A. Exhaust

With all the filters in place, determine the total hood exhaust

volume with a Shortridge meter as follows:

1. All cooking equipment should be on. If the hood has

internal short circuit make-up air, it should be turned off.

2. Measuring Velocities

 • SetuptheShortridgemeter.Leaveallholesof

Velgrid open. Do NOT tape over holes that are not

over openings. The conversion factor takes this into

account.

 • Positionthegridovereachfilterasshown.

 • Takevelocityreadingsforeachfilter.

3. *Calculate each filter’s volumetric flow rate by summing

the flow rate of each individual filter in the hood.

4. *Calculate the total hood’s volumetric flow rate by

summing the flow rate of each individual filter in the

hood.

*Note: For best accuracy multiply the velocity of each filter

by its conversion factor and sum the flow rates. Averaging the

velocity measured for all filters may cause error.

Fig. 37

Total hood flow rate = (Filter 1 Flow Rate) + … + (Filter X Flow Rate)

=423.0 + 421.8 + 420.7 + 418.2 = 1683.7 cfm

Flow rate for one filter = Conversion

Factor xAverage

Velocity

(Imperial) = 1.50 x 282 fpm = 423.0 cfm

(Metric) = .139 x 5157 m/hr = 717 m3/hr

Example: Measured velocities for 20 x 20 filter = 282 fpm (5157 m/hr)

=717 + 717 + 715 + 711 = 2860 m3/hr

24 Canopy Hood

A. Exhaust

With all the filters in place, determine the total hood exhaust

volume with a rotating vane anemometer as follows:

1. All cooking equipment should be off. If the hood has internal

short circuit make-up air, it should be turned off.

2. Measuring Velocities

 • Measurementshouldbetakenatsixlocationsperfilter.

They must be over the inlet opening as shown in Fig. 39.

 • Measurethevelocityofeachlocation.Adigital2.75in.

(70 mm) rotating vane anemometer or its equivalent is

suggested. The center of the anemometer should be held 2 in. (50 mm) from the face of the

filters as in Fig. 40. It is helpful to make brackets to keep the anemometer at the 2 in. (50 mm)

distance and parallel to the filter. Both squareness and distance are important for accuracy.

3. Calculate the average velocity for the filter.

4. Determine the filter’s conversion factor from the table.

5. Calculate each filters volume in CFM by multiplying the average

velocity by the conversion factor.

2 in.

Rotating Vane

Anemometer

1/2 Width

1/4 Width

1/2 Height

Fig. 40

Nominal Filter Size (H x L) Imperial

Conversion Factor

Metric

Conversion Factor

Inches Millimeters

16 x 16 400 x 400 1.31 ft2.122 m2

16 x 20 400 x 500 1.65 ft2.153 m2

20 x 16 500 x 400 1.23 ft2.114 m2

20 x 20 500 x 500 1.65 ft2.153 m2

Grease-X-Tractor™ High Efficiency Filters or Grease Grabber™ Multi-Filtration System

2 in.

Rotating Vane

Anemometer

1/2 Width

1/4 Width

1/2 Height

Fig. 39

Filter 1 225 201 187

210 238 197

Filter 2 228 222 226

237 240 220

Filter 3 230 245 240

250 223 219

Filter 4 225 265 219

245 221 200

Average slot velocity for Filter 1 = Sum of Velocity Readings

Number of Readings

=1258

6 = 209.7 fpm

(repeat for each filter)

For a nominal filter size of 20 x 20, the conversion factor is 1.65

Volume for Filter 1 = Conversion Factor x Average Velocity

= 1.65 ft2x 209.7 ft./min.

=346.0 cfm (repeat for each filter)

Example: (Imperial)

Hood Length = 7 feet 0 inches with four 20 x 20 filters.

Measure the velocities in fpm for each 20 x 20 filter

(six readings per filter)

Total hood volume

=Filter 1

Volume +Filter 2

Volume +Filter 3

Volume +Filter 4

Volume

= 346.0 + 377.6 + 386.9 + 378.1 = 1488.6 cfm

Filter 1 4114.80 3675.88 3419.86

3840.48 4352.54 3602.74

Filter 2 4169.66 4059.94 4133.08

4334.26 4389.21 4023.36

Filter 3 4420.12 4480.56 4389.12

4572.00 4078.22 4005.07

Filter 4 4114.80 4846.52 4005.07

4480.56 4041.65 3657.60

Example: (Metric)

Hood Length = 2.13 meters, with four 500 x 500 mm filters.

Measure the velocities in m/hr for each 500 x 500 mm filter

(six readings per filter)

Average slot velocity for Filter 1 = Sum of Velocity Readings

Number of Readings

=23006

6 = 3834 m/hr

(repeat for each filter)

For a nominal filter size of 500 x 500, the conversion factor is .153

Volume for Filter 1 = Conversion Factor x Average Velocity

= .153 m2x 3834 m/hr

=586.7 m3/hr (repeat for each filter)

Total hood volume

=Filter 1

Volume +Filter 2

Volume +Filter 3

Volume +Filter 4

Volume

= 587 + 642 + 657 + 642 = 2528 m3/hr

25 Canopy Hood

14.25 in.

2.75 in.

2.5 in.

3.25 in.

14.75 in.

14.25 in.

2.75 in.

Fig. 42

Fig. 44

Fig. 43

Nominal Filter Size (H x L) Imperial

Conversion Factor

Metric

Conversion Factor

Inches Millimeters

16 x 16 400 x 400 1.53 ft2.142 m2

16 x 20 400 x 500 2.00 ft2.185 m2

20 x 16 500 x 400 2.25 ft2.209 m2

20 x 20 500 x 500 3.00 ft2.279 m2

Grease-X-Tractor™ High Efficiency Filters or Grease Grabber™ Multi-Filtration System

A. Exhaust

With all the filters in place, determine the total hood exhaust

volume with a Shortridge meter as follows:

1. All cooking equipment should be on. If the hood has

internal short circuit make-up air, it should be turned off.

2. Measuring Velocities

 • SetuptheShortridgemeter.Leaveallholesof

Velgrid open. Do NOT tape over holes that are not

over openings. The conversion factor takes this into

account.

 • For20in.(500mm)highfilters,positionthegrid

as shown in Fig. 42 and 43. Average the two

measurements.

 • For16in.(400mm)highfilterspositionthegridas

shown in Fig. 44.

 • For20in.(500mm)widefilters,positionthegridover

the left and right side of the filter. Average the two

measurements.

 • Takevelocityreadingsforeachfilter.

3. *Calculate each filter’s volumetric flow rate by summing

the flow rate of each individual filter in the hood.

4. *Calculate the total hood’s volumetric flow rate by summing

the flow rate of each individual filter in the hood.

*Note: For best accuracy multiply the velocity of each filter by its

conversion factor and sum the flow rates. Averaging the velocity

measured for all filters may cause error.

Flow rate for one filter = Conversion Factor x Average Velocity

= 3.0 x 201.5 fpm = 604.5 cfm

= .279 x 3385 m/hr = 944 m3/hr

Total hood flow rate = Filter 1

Flow Rate + … + Filter X

Flow Rate

= 604.5 + 600.3 + 592.4 + 613.3 = 2410.5 cfm

944 + 1020 1006 + 1042 = 4012 m3/hr

Example:

Measured velocities for 20 x 20 in. (500 x 500 mm) filter.

Average slot velocity = Sum of Velocity Readings

Number of Readings

(Imperial) = 198 + 205

2 = 201.5 fpm

(Metric) =3021 + 3749

2 = 3385 m/hr

Fig. 41

26 Canopy Hood

Short Circuit Hoods

A. Supply

All cooking equipment should be off. The hood

exhaust should also be off.

1. Measuring Velocities

 • Velocitymeasurementsshouldbemade

with a digital 2.75 in. (70 mm) rotating vane

anemometer or its equivalent.

 • Onevelocitymeasurementshouldbetaken

for every 8 in. (200 mm) of short circuit

opening length, starting tight against one

edge of the opening, and finishing tight

against the other edge. The anemometer

should be placed at the bottom edge of the

opening, flush with the bottom lip as shown

in Fig. 45. Both squareness and placement

are important for accuracy.

2. Calculate the average slot velocity.

3. Calculate the CFM per linear foot by dividing

the average velocity by a conversion factor of

5.52 per ft. or 1.68 per m.

4. Calculate the hoods exhaust volume by

multiplying the CFM per linear foot by the total

hood length.

Fig. 45

Testing Hood Air Volume

Example: 4 ft. (1.22 m) short circuit hood (36 in. (.914 m) short circuit opening):

Number of readings = 36 in. / 8 in. => 6 readings (.914 m / .2 m => 6 readings)

Average slot velocity = Sum of Velocity Readings

Number of Readings

(Imperial) =786 + 900 + 1126 + 1048 + 1111 + 1115

6 =6086

6=1014.3 fpm

(Metric) =1335 + 1529 + 1913 + 1780 + 1888 + 1894

6 =10339

6=1723 m/hr

CFM per linear foot = Average Slot Velocity

Conversion Factor

=1014.3 fpm

5.52 =183.8 cfm/linear foot

=1723 m/hr

1.68 =1026 m3/hr

Hood supply volume = CFM/linear foot (or m3/hr) x Total Hood Length

= 183.8 x 4 ft. = 735.2 cfm

= 1026 x 1.22 m = 1252 m3/hr

27 Canopy Hood

POWER SOURCE MANUAL RESET RELAY

MICROSWITCH

ELECTRIC GAS VALVE

INSTALLER PROVIDED JUNCTION BOXES

PRM

BASIC WIRING DIAGRAM

RED (COMMON)

POWER SOURCE

MANUAL RESET RELAY

YELLOW (N.O)

BLACK (N.C.)

GAS VALVE

MICROSWITCH

BASIC WIRING DIAGRAM

RED (COMMON)

MANUAL RESET RELAY

YELLOW (N.O)

BLACK (N.C.)

GAS VALVE

SEE NOTE 3

NOTE: DO NOT USE YELLOW WIRE ON MICROSWITCH IN NORMAL

INSTALLATION. THE YELLOW WIRE IS TO BE USED ONLY FOR

EXTINGUISHER ALARM, LIGHTS, CIRCUITS, ETC.

PUSHBUTTON SWITCH

120V/60HZ

K1b

CURRENT DRAW MAX:

8A RESISTIVE

8A INDUCTIVE

120VAC

NOTES:

1. DENOTES FIELD INSTALLATION

2. DENOTES FACTORY INSTALLATION

3. GAS VALVE: UL LISTED ELECTRICALLY-OPERATED SAFETY VALVE FOR NATURAL OR LP GAS AS NEEDED OF

APPROPRIATE PRESSURE AND TEMPERATURE RATING, 110V/60HZ OR AMEREX GAS VALVES, PN 12870, 12871,

12872, 12873, 12874, 12875 and 12876.

4. K1a and K1b ARE N.0. WHEN K1 IS DE-ENERGIZED.

Amerex Wiring Plan View

Fig. 46

28 Canopy Hood

Field Wiring for the Ansul Snap-Action Switch

Option A

Relay Part No. 14702

* K1a and K1b are N.O. when K1 is de-energized

Manual Reset Relay

Part No. 14702

K1*

N.O. K1a

K1b N.O. Push Button

Switch Gas Valve

See Note 3

110V/60HZ

Black

Red

Brown

Snap-Action Switch

Part No. 423878

Option B

Relay Part No. 426151

Ansul Snap-Action Switch

(Switch contacts shown with Ansul

Automan in the cocked position)

Snap-Action Switch

Part No. 423878

Black

Red

Brown

L2 Neutral

L1 Hot

110 VAC/60HZ

GND

Screw

Power

Indicator

Reset

Relay Coil

Manual Reset Relay

(Part No. 426151)

Electrical Rating

1/3 HP, 10 AMP, 120 VAC

1/2 HP, 10 AMP, 240 VAC

13 AMP, 28 VDC

Gas Valve

See Note 3

2 Snap-Action Switches provided by Greenheck

may be wired as shown.

Four typical examples shown

Power to cooking

equipment

Shunt Trip Breaker

120 VAC

NInput

NC Electric gas valve - If reset relay is

used, see option A or B at right.

Mechanical gas shut off valve does not

require electrical connection.

Input

Voltage Free

Contacts for

Building Alarm(s)

Power to

Fan(s)

Fan

Starter

Terminal strip in

Waterwash Control Panel

120 VAC

NInput Power to

fan(s)

Fan Starter

Manual Switch

If prohibited by local codes, do not shut down

exhaust fans with this method of wiring.

Note:

1. Denotes ﬁeld installation.

2. Denotes factory installation.

3. Gas Valves: “UL Listed electrically-operated safety valve for natural or LP gas

as needed of appropriate pressure and temperature rating, 110V/60HZ”

or Ansul gas valves.

4. Do not use black wire on snap-action switch in normal installation. Black

wire may only be used for extraneous alarm, light circuits, etc.

Equipment

Alarms

Waterwash

Fans

Ansul Wiring Plan View

Fig. 47

29 Canopy Hood

HOOD-1BHOOD-1A

BASIC WIRING DIAGRAM (WIRING BY OTHERS)

FROM MAKE-UP AIR

STARTER #3

TO CUBE FAN

DISCONNECT SWITCH

WIRED THROUGH

BREATHER TUBE ONLY

FROM MAKE-UP AIR

STARTER #2

TO CUBE FAN

DISCONNECT SWITCH

WIRED THROUGH

BREATHER TUBE ONLY

EXHAUST FAN-1A EXHAUST FAN-1B

POWER

PANEL

SUPPLY POWER TO

JUNCTION BOX

ON HOOD FOR HOOD LIGHTS

JUNCTION BOX ON

TOP OF HOOD FOR

FIELD CONNECTION

OF SUPPLY POWER

FIVE (5) CONTROL WIRES

FROM SWITCH JUNCTION

BOX ON HOOD TO MAKE-UP

AIR CONTROL CENTER

CONTROL CENTER

MAKE-UP AIR UNIT

FIELD WIRING

SUPPLY POWER

TO MAKE-UP AIR

CONTROL CENTER

TWO (2) CONTROL WIRES FROM

ANSUL SNAP ACTION SWITCH TO

MOTOR CONTROLS AREA.

ELECTRICAL CONTRACTOR TO

PROVIDE HANDIBOX ON SIDE

OF AUTOMAN.

ANSUL AUTOMAN IS NOT AN

ELECTRICAL RATED BOX.

NO CONNECTIONS INSIDE.

Overall Wiring Plan View

Fig. 48

30 Canopy Hood

EXHAUST FAN CONTACT

SUPPLY FAN CONTACT

EXHAUST FAN CONTACT

SUPPLY FAN CONTACT

SEPARATE EXHAUST & SUPPLY SWITCHING

COMBINED EXHAUST & SUPPLY SWITCHING

THE SUPPLY FAN WILL BE TURNED OFF IF THE FIRE SYSTEM IS ACTIVATED, AND

ALLOW THE EXHAUST FAN TO CONTINUE TO OPERATE.

CONTROL PANEL TO A FIRE SUPPRESSION CONTACT (FSC1). WHEN WIRED PROPERLY,

THE DIAGRAM BELOW SHOWS HOW TO WIRE THE EXHAUST AND SUPPLY FANS WITH A

SUPPRESSION SYSTEM AND IS NORMALLY MOUNTED IN THE FIRE SYSTEM CONTROL BOX.

THE FIRE SUPPRESSION CONTACT (FSC1) IS PROVIDED AS PART OF THE FIRE

OL OL

ON TOP OF HOOD

LIGHTS

SUPPLY POWER

HOOD

WHITE

JUNCTION BOX

FOR FIELD

CONNECTION OF

120 VOLT

FSC1

CONTROL

VOLTAGE

EXH

FAN

STR CTRLSTR

SUP

FAN HTR

SUP

ON TOP OF HOOD

LIGHTS

HOOD

SUPPLY POWER

JUNCTION BOX

FOR FIELD

CONNECTION OF

120 VOLT

FAN

SUP

STR

CONTROL

115VOLT

STR

FAN

EXH

CTRL

SUP

HTR

SUP FAN

OPTIONAL

OL FSC1

LIGHT

SWITCH

EXHAUST & SUPPLY

SWITCH

HEATER

SWITCH

LIGHT

SWITCH

EXHAUST

SWITCH

SUPPLY

SWITCH

HEATER

SWITCH

HOOD SWITCH

PANEL DETAIL

THE DIAGRAMS BELOW SHOW A TYPICAL HOOD SWITCH PANEL REMOTE MOUNTED.

FOR HOOD MOUNTED SWITCHES REFER TO THE WIRING CONNECTION DECAL ON THE

COVER OF THE JUNCTION BOX ON THE HOOD TOP.

HOOD SWITCH

PANEL DETAIL

CONTROL

VOLTAGE

Wiring for Hood Switch Panels

Fig. 49

The diagrams below show a typical hood switch panel remote mounted. For hood mounted switches

refer to the wiring connection decal on the cover of the junction box on the hood top.

The diagram below shows how to wire the exhaust and supply fans with a control panel to a fire

suppression contact (FSC1). When wired properly, the suppy fan will be turned off if the fire system is

activated and allow the exhaust fan to continue to operate.

The fire suppression contact (FSC1) is provided as part of the fire suppression system and is normally

mounted in the fire system control box.

31 Canopy Hood

ON (NO)

ON ON

ON (NC) ON (NC)

ON (NC)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 both are activated

Off if both are not activated

Off if either not activated

Single Throw

Single Pole Double Pole

Double Throw

Center Off

Series Circuit

Normally Open Contacts

Parallel Circuit

Normally Closed Contacts

Circuit Diagrams

Fig. 50

32 Canopy Hood

Daily Maintenance

1. Wipe grease from exposed metal surfaces on the hood interior using a clean, dry cloth.

2. Visually inspect the filters or cartridges for grease accumulation.

3. Remove grease cup, empty contents, and replace cup.

Weekly Maintenance

1. Remove the grease filters or cartridges and wash in dishwasher or pot sink.

Note: Filters installed over heavy grease producing equipment may require more frequent

cleaning. See filter cleaning schedule.

2. Before replacing filters, clean the interior plenum surfaces of any residual grease accumulations.

Periodic Maintenance

1. Painted hood exterior surfaces should be cleaned with a mild detergent solution.

2. Stainless steel hood exterior surfaces should be cleaned with a mild detergent and then polished

with a good grade stainless steel polish to preserve the original luster.

Note: Never use abrasive cleaners or chemicals on hood surfaces. Never use chlorine based

cleaners or iron wool pads to clean the hood. They may scratch or mar the material. Always rub

with the grain of the stainless.

3. To maintain optimum performance of your hood and fan, duct cleaning should be performed as

often as the application and code requires.

4. Re-caulk the hoods with an NSF Approved silicone caulk, (GE SCS1009 or its equivalent) as

needed.

1. Grasp the baffle with drain holes facing

down and lift into the hood. For short hoods

with only one baffle it may be necessary to

turn the baffle slightly diagonal to fit it past

the drain channel.

2. After the baffle clears the drain channel of

the hood, turn the baffle so it is lined up with

the upper hanger in the hood.

3. Hook the upper channel of the baffle over

the upper hanger of the hood and set the

lower edge of the baffle into the condensate

gutter. Repeat until all baffles are installed in

the hood.

4. Center the baffle from side to side in the

hood.

Maintenance

Condensate Hood Baffle Installation

UPPER HANGER

CONDENSATE

GUTTER

CONDENSATE

GUTTER

UPPER HANGER

CONDENSATE

GUTTER

CONDENSATE

GUTTER

CORRECT

INCORRECT

Fig. 51

Fig. 52

33 Canopy Hood

NOTE: Never install the Second Stage filter in the front filter channel. The Second Stage filter

must be installed behind a UL Classified Grease-X-Tractor™ primary filter Model HE or GX.

1. Slide the top edge of the Second Stage filter into the top rear filter channel; Fig. 53.

2. Lifting the lower edge of the filter past the grease trough, continue to push the top of the filter into

the channel.

3. When the filter is even with the bottom rear filter channel, set the filter into the channel; Fig. 54.

4. Slide the filter to one end of the hood and repeat until all the filters are installed. Make sure the

filters are placed tightly together with no visible gaps.

5. Latch filters together by connecting hooks to handle on next filter; Fig. 55.

6. Install the Grease-X-Tractor™ primary filters in the same manner using the front filter channel.

Fig. 55Fig. 54Fig. 53

Grease Grabber™ Filter Installation

34 Canopy Hood

1A 1B

2A 2B

3A 3B

Step 1 Remove the front GX filters: (1A) Remove middle filters first, (1B) slide ends toward middle and remove.

Step 2 Release the hooks that hold the filters together. Slide the top hook upward and the bottom hook downward until the

hook releases. Do this to all filters.

Step 3 Remove the GG filters, starting in the middle of the hood: (3A) Grab the handles on either side and lift the filter up,

(3B) pull the bottom of the filter toward yourself, (3C) lower the filter out of the hood. Repeat this process for each

filter. The filters that are on the ends will have to be slid toward the middle and then lifted out.

Step 4 Frequent Maintenance:

Note: Required washing frequency is dependent on type of cooking and quantity of food cooked.

- Remove filters from hood and place each filter in a whirlpool sink or dishwasher.

- If using a whirlpool sink, cycle for 10 minutes. Use standard dishwash soap. (4A)

- If using a dishwasher, cycle it three times to ensure all grease is removed. (4B)

- If using standard sink, cover with hot water and degreaser and soak for two hours. Rinse after soaking.

Note: For hoods with large quantities of filters, it is acceptable to wash 3 to 4 filters each day, cycling all of the filters in three days.

Note: The beads will discolor. Standard cooking will turn the beads yellow in color. Open flame cooking will cause the beads to

blacken. Neither affects the performance of the filters.

Periodic Inspection:

- Each filter may be soaked in hot soapy water for two hours once a month prior to washing if grease build-up is found.

- Inspect the filters by holding it up to a light. Light shining through more than six holes in a group indicates filter

damage.

- For filter replacement, call 1-800-337-7400

4A 4B

GX Filters, first row of filters GG Filters, second row of filters

Slide

hooks

Slide

filter up Pull bottom of

filter towards yourself

Pull filter down

Step 5 Replace GG filters in hood. Do Step 3 in reverse order. (3C, then 3B, then 3A)

Step 6 Latch filters together by connecting the hooks to the handle on the next filter. Slide hook on from the top and bottom

of the handle. Do not try to snap the hooks into place. Do Step 2 in reverse.

Step 7 Replace the front GX filters. Do Step 1 in reverse. Be sure to install filters in the ends of the hood first, then install the

filters in the middle of the hood (1B, then 1A)

Caution: To prevent damage to filter media, do not wash second stage filters in detergents that contain

hydroxides such as sodium hydroxide or potassium hydroxide.

Grease Grabber™ Filter Cleaning

35 Canopy Hood

NOTE: Standard cooking will turn the beads yellow in color. Open flame cooking will cause the beads to

blacken. Neither affects the performance of the beads.

Caution: To prevent damage to filter media, do not wash second stage filters in detergents that contain

hydroxides such as sodium hydroxide or potassium hydroxide.

Preference

Washing Equipment Cooking

Equipment Chemical Frequency

Required

Time

Cycles

Baffle Filter or

Grease-X-Tractor™

Wash Frequency

Type Temp

Best

Commercial

Grade Dish

Washer

180º F

Min

Griddle

Dish

Washer

Detergent

Every 3 days 2 Cycles Every 3 days

2 Cycles

Fryer Weekly 2 Cycles Twice a week

1 Cycle

Charbroiler Daily 2 Cycles Daily

2 Cycles

Wok Daily 2 Cycles Daily

2 Cycles

Low Temp.

Dish Washer

(Chemical

Sanitizer)

140º F

Griddle

Dish

Washer

Detergent

Every 3 days 3 Cycles Every 3 days

2 Cycles

Fryer Weekly 3 Cycles Twice a week

2 Cycles

Charbroiler Daily 4 Cycles Daily

2 Cycles

Wok Daily 4 Cycles Daily

2 Cycles

Power

Wash Sink

(Whirlpool)

with Heater

180º F

Min

Griddle

Pot & Pan

Detergent

Every 3 days 10 Minutes Every 3 days

5 minutes

Fryer Weekly 10 Minutes Twice a week

5 minutes

Charbroiler Daily 15 Minutes Daily

5 minutes

Wok Daily 15 Minutes Daily

5 minutes

Power

Wash Sink

(Whirlpool)

no Heater

140º F

Griddle

Pot & Pan

Detergent

Every 3 days 15 Minutes Daily

5 minutes

Fryer Weekly 15 Minutes Twice a week

5 minutes

Charbroiler Daily 25 Minutes Daily

10 minutes

Wok Daily 25 Minutes Daily

10 minutes

Pot Sink

with Heater

(rinse with

sprayer after

soaking)

180º F

Griddle

Pot & Pan

Detergent

and/or

Degreaser

Every 2 days 1 Hour

Daily

Soak 10 min., then scrub with

scour pad and bottle brush

Fryer Every 2 days 1 Hour

Daily

Soak 5 min., then scrub with

scour pad and bottle brush

Charbroiler Daily 2 Hours Daily

Soak 10 min., then scrub with

scour pad and bottle brush

Wok Daily 2 Hours

Worst

Pot Sink

no Heater

(rinse with

sprayer after

soaking)

140º F

Griddle

Commercial

Grade

Kitchen

Degreaser

Daily

2 Hours

Change hot water

every 30 minutes

Daily

Soak 10 minutes then scrub

with scour pad & bottle brush

Fryer Every 2 days

2 Hours

Change hot water

every 30 minutes

Charbroiler Not Recommended

Wok Not Recommended

Filter Washing Frequency Guide

36 Canopy Hood

Troubleshooting

Problem: Exhaust fan is not operating or is not operating at design levels.

Is the fan receiving power? Replace fuses, reset circuit breakers, check disconnect.

Is the belt loose or broken? Replace or tighten belt.

Is the fan rotating in correct direction? Have the electrician correctly wire the fan.

Is the make-up air operating? Problems with make-up air may interfere with the exhaust fan -

check the manufacturers installation manual.

Does the airﬂow need to be increased? Adjust or replace pulleys to increase fan RPM, install a larger motor.

Does the fan vibrate?

Clean the fan wheel/blade, replace fan wheel if damaged, check for

loose bolts, check for broken or damaged components, check for

rags and other foreign objects.

Problem: Hood is full of smoke. There is smoke coming out of the edges of the hood.

Is the fan operating at design levels? See exhaust fan troubleshooting section.

Is the fan correctly sized?

Refer to test and balance report, design speciﬁcations and fan

curves; have an electrician check the motor amperage; try removing

the ﬁlter temporarily to see if capture improves. (Make sure to

replace ﬁlter to prevent risk of ﬁre!); switch to different ﬁlters with

lower static pressure.

Are the ﬁlters in good condition? Clean ﬁlters, replace damaged ﬁlters, properly position ﬁlters.

Is there sufﬁcient make-up air?

(Kitchen should be in a slight negative

but not excessive. Check to see if there

is a strong draft through an open door).

Check make-up air unit, increase make-up air, make-up air should be

evenly distributed throughout the kitchen.

Does the current cooking equipment

match the original design? Adjust or replace fan to match the cooking equipment load.

Are there multiple hoods on one fan? One hood may be over exhausting and the other hood not drawing

enough. Restrict second hood to help problem hood.

Are there closed dampers in the duct? Open dampers.

Is the ductwork complex or to small? Change to a higher static fan, modify the ductwork.

Is the ductwork obstructed? Clear obstruction.

Is this a short circuit hood? Turn off or reduce the amount of air supplied to short circuit.

Problem: Smoke blows away before reaching the bottom of the hood.

Are there cooling fans directed at the

hood or cooking equipment? Turn off or redirect fans.

Are there ceiling diffusers directing air at

the hood?

Move diffusers to more neutral area or replace with a diffuser that

directs air away from the hood.

Are there open windows or doors? Close windows and doors.

Are there cross drafts or other drafts in

the kitchen?

Find source of the draft and eliminate, add side skirts to hood (test

with cardboard – use stainless for permanent side skirts); increase

the amount of overhang on the spillage side; add a 6 in. lip around

the base of the hood (test with cardboard – use stainless for

permanent side skirts); make-up air should be spread out evenly

through the kitchen.

Is the hood near a main walkway? Add side skirts to hood (test with cardboard ﬁrst); increase the

amount of overhang on spillage side.

37 Canopy Hood

Troubleshooting

Problem: Smoke blows away before reaching the bottom of the hood.

Are there pass-thru windows near

the hood?

Adjust amount and locations of make-up air to eliminate drafts

through the pass-thru windows.

Is this an air curtain hood? Turn off or reduce the amount of make-up air.

Is the make-up air part of the hood

or an attached plenum?

Try turning off or reducing the amount of make-up air; block off

portions of the supply to direct air away from the problem area (test

with cardboard).

Problem: Pilot lights are being blown out or cooking equipment is being cooled by make-up air.

Are there drafts from make-up air?

Try turning off or reducing the amount of make-up air; block off

portions of the supply to direct air away from the problem area (test

with cardboard ﬁrst); remove any obstructions in front of supply that

directs air toward cooking equipment.

Problem: Cold air can be felt by the cook at the hood.

Is this a short circuit hood? Turn off or reduce the amount of air supplied to short circuit.

Is this an air curtain hood? Turn off or reduce the amount of air supplied to the air curtain; heat

the supply air.

Is the make-up air part of the hood

or an attached plenum?

Try turning off or reducing the amount of make-up air; heat the

supply air.

Problem: The kitchen gets hot.

Is the hood capturing? Hood is not drawing enough air, see sections above on fan

performance and hood capture.

Is this an air curtain hood? Turn off or reduce the amount of air supplied to the air curtain.

Is the make-up air part of the hood

or an attached plenum?

Try turning off or reducing the amount of make-up air; cool the

supply air.

Problem: Cooking odors in the dining area.

Is the hood capturing? Hood is not drawing enough air, see sections above on fan

performance and hood capture.

Is there a draft through doors between

the kitchen and dining area?

Decrease make-up air in the kitchen; increase exhaust air through

hood.

Problem: Grease is running off the hood.

Is there grease on top of the hood? Exhaust duct is not correctly welded.

Is the caulk missing or damaged? Clean problem area and re-caulk.

Is the grease cup inserted properly? Put grease cup back in place.

Problem: Hood is noisy.

Is the fan running in the correct direction? See exhaust fan troubleshooting section.

Are the ﬁlters in place? Replace missing ﬁlters.

Is the hood over exhausting? Slow down fan (see exhaust fan troubleshooting section)

38 Canopy Hood

Before calling your manufacturers representative to report a problem have the

following information available:

1. Review / summary of troubleshooting section in installation operation manual.

2. Hood model and serial number.

3. Current cooking equipment line-up.

4. Size of hood (length, width and height).

5. Island or wall configuration.

6. Multiple hoods on one fan.

7. Nature of spillage (one end; all around the edges).

8. Does the smoke make it to the hood?

9. Height hood is mounted above finished floor.

10. How make-up air is brought into the kitchen (hood, ceiling diffusers, separate plenum).

11. Is exhaust system controlled by a variable volume system?

12. Is the fan noisy?

GREENHECK

PART NUMBER

FILTER DESCRIPTION

(HEIGHT X WIDTH X DEPTH)

457626 16 x 16 x 2 Aluminum Baffle Filter

457628 16 x 20 x 2 Aluminum Baffle Filter

457632 20 x 16 x 2 Aluminum Baffle Filter

457634 20 x 20 x 2 Aluminum Baffle Filter

457627 16 x 16 x 2 Stainless Steel Baffle Filter

457629 16 x 20 x 2 Stainless Steel Baffle Filter

457633 20 x 16 x 2 Stainless Steel Baffle Filter

457635 20 x 20 x 2 Stainless Steel Baffle Filter

851656 16 x 16 High Velocity Cartridge Filter

851657 16 x 20 High Velocity Cartridge Filter

851659 20 x 16 High Velocity Cartridge Filter

851660 20 x 20 High Velocity Cartridge Filter

851703 16 x 16 Grease-X-Tractor™ Aluminum Filter

851704 16 x 20 Grease-X-Tractor™ Aluminum Filter

851706 20 x 16 Grease-X-Tractor™ Aluminum Filter

851707 20 x 20 Grease-X-Tractor™ Aluminum Filter

851709 16 x 16 Grease-X-Tractor™ SS Filter

851710 16 x 20 Grease-X-Tractor™ SS Filter

851712 20 x 16 Grease-X-Tractor™ SS Filter

851713 20 x 20 Grease-X-Tractor™ SS Filter

458763 16 x 16 Flame Gard® 1 Baffle Filter

458764 16 x 20 Flame Gard® 1 Baffle Filter

454878 20 x 16 Flame Gard® 1 Baffle Filter

454879 20 x 20 Flame Gard® 1 Baffle Filter

852208 20 x 16 Grease Grabber™ Second Stage Filter

852207 20 x 20 Grease Grabber™ Second Stage Filter

852388 16 x 16 Grease Grabber™ Second Stage Filter

852389 16 x 20 Grease Grabber™ Second Stage Filter

Replacement Parts

39 Canopy Hood

GREENHECK

PART NUMBER REGISTERS

452700 24 x 8 Aluminum Single Deflection H-OB

452701 36 x 8 Aluminum Single Deflection H-OB

452702 36 x 8 Aluminum Single Deflection H-OB

452703 44 x 8 Aluminum Single Deflection H-OB

453796 24 x 12 Aluminum Single Deflection H-OB

453797 36 x 12 Aluminum Single Deflection H-OB

453798 38 x 12 Aluminum Single Deflection H-OB

453799 44 x 12 Aluminum Single Deflection H-OB

452729 24 x 8 Aluminum 38° Fixed Blade RA-OB

452730 30 x 8 Aluminum 38° Fixed Blade RA-OB

452731 36 x 8 Aluminum 38° Fixed Blade RA-OB

452732 38 x 8 Aluminum 38° Fixed Blade RA-OB

452733 44 x 8 Aluminum 38° Fixed Blade RA-OB

GREENHECK

PART NUMBER SWITCHES

850551 Light Switch Only

851776 Fan Switch Only

851777 Light Switch & Fan Switch ( 2 switches)

851778 Fan Switch & Heat Switch (2 switches)

851779 Exhaust, Fan & Supply Switch (2 switches)

851780 Light, Fan & Heat Switch (3 switches)

851781 Light, Exhaust, Supply Separate Switch (3 switches)

851782 Exhaust, Supply, Heat Separate Switch (3 switches)

851783 Light, Exhaust, Supply, Heat Separate Switch (4 switches)

851784 Fan Switch & Temper (3 position) (2 switches)

851510 Light, Fans, & Temper (3 position) (3 switches)

851511 Exhaust, Supply, & Temper (3 position) (3 switches)

851512 Light, Exhaust, Supply, & Temper (3 position) (4 switches)

851618 Automatic Fire Damper Test Switch

GREENHECK

PART NUMBER MISCELLANEOUS

451131 Grease Cup

453498 Glass Globes for hood lights (clear)

851744 Grease Extractor Filter Removal Tool

851834 Baffle Filter Removal Tool

851747 High Velocity Cartridge Filter Removal Tool

Replacement Parts

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from

the shipment date. Any units or parts which prove defective during the warranty period will be replaced at our option

when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of

one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the

nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change speciﬁcations

without notice.

Contact Greenheck Fan Corporation:

Phone:(715)359-6171•Fax:(715)355-2399•E-mail:gfcinfo@greenheck.com•Website: www.greenheck.com

Warranty

Greenheck Fan Canopy Type Kitchen Hoods 452413 Users Manual

452413 to the manual ed8570c3-b7e3-47f7-87f5-71879022c07d

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