Greenheck Fan Ventilation Hood 452413 User Manual

PN 452413  
®
Canopy Type Kitchen Hoods  
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.  
Please record the Serial, Model #, and Mark for the hood and other equipment for future reference.  
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Table of Contents  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
Grease Grabber™ Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 - 34  
Filter Cleaning Frequency Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 - 37  
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 - 39  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
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Receiving and Handling  
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 DEPTH (MULTIPLY BY LENGTH) FOR HOOD WEIGHT  
HOOD  
MODEL  
3 ft.  
3.5 ft  
4 ft  
4.5 ft  
5 ft  
5.5 ft  
6.5 ft  
7 ft  
7.5 ft  
6 ft  
1.8288 m  
.914 m  
30 lbs/ ft.  
1.067 m 1.2192 m 1.3716 m 1.524 m 1.6764 m  
1.9812 m 2.1336 m 2.286 m  
32 lbs/ft  
35 lbs/ft  
38 lbs/ft  
40 lbs/ft  
GH, GK,  
GXEW  
44.64  
kg/m  
47.62  
kg/m  
52.08  
kg/m  
56.54  
kg/m  
59.52  
kg/m  
36 lbs/ft  
38 lbs/ft  
41 lbs/ft  
44 lbs/ft  
46 lbs/ft  
GH, GX,  
GXDW  
53.57  
kg/m  
56.44  
kg/m  
61.01  
kg/m  
65.47  
kg/m  
68.45  
kg/m  
40 lbs/ft  
44 lbs/ft  
48 lbs/ft  
52 lbs/ft  
GH, GK,  
GXFW  
59.52  
kg/m  
65.47  
kg/m  
71.42  
kg/m  
77.38  
kg/m  
48 lbs/ft  
51 lbs/ft  
54 lbs/ft  
57 lbs/ft  
GH, GK,  
GXCW  
71.42  
kg/m  
71.89  
kg/m  
81.35  
kg/m  
84.82  
kg/m  
44 lbs/ft  
48 lbs/ft  
52 lbs/ft  
56 lbs/ft  
GH, GK,  
GXSW  
65.47  
kg/m  
71.42  
kg/m  
77.38  
kg/m  
83.33  
kg/m  
39 lbs/ft  
41 lbs/ft  
44 lbs/ft  
47 lbs/ft  
49 lbs/ft  
GGEW  
GGDW  
GGFW  
GGCW  
GGSW  
58.03  
kg/m  
61.01  
kg/m  
65.47  
kg/m  
69.94  
kg/m  
72.91  
kg/m  
45 lbs/ft  
47 lbs/ft  
50 lbs/ft  
53 lbs/ft  
55 lbs/ft  
66.96  
kg/m  
69.94  
kg/m  
74.40  
kg/m  
78.86  
kg/m  
81.84  
kg/m  
49 lbs/ft  
53 lbs/ft  
57 lbs/ft  
61 lbs/ft  
72.91  
kg/m  
78.86  
kg/m  
84.82  
kg/m  
90.77  
kg/m  
57 lbs/ft  
60 lb/ft  
63 lbs/ft  
66 lbs/ft  
84.82  
kg/m  
89.28  
kg/m  
93.74  
kg/m  
98.21  
kg/m  
53 lbs/ft  
57 lbs/ft  
61 lbs/ft  
65 lbs/ft  
78.86  
kg/m  
84.82  
kg/m  
90.77  
kg/m  
96.72  
kg/m  
52 lbs/ft  
54 lbs/ft  
56 lbs/ft  
58 lbs/ft  
61 lbs/ft  
63 lbs/ft  
GH, GK,  
GXEV  
77.38  
kg/m  
81.35  
kg/m  
83.33  
kg/m  
86.30  
kg/m  
90.77  
kg/m  
93.74  
kg/m  
61 lbs/ft  
66 lbs/ft  
68 lbs/ft  
72 lbs/ft  
75 lbs/ft  
79 lbs/ft  
GH, GK,  
GXFV  
90.77  
kg/m  
98.21  
kg/m  
101.18  
kg/m  
107.14  
kg/m  
111.6  
kg/m  
117.55  
kg/m  
81 lbs/ft  
84 lbs/ft  
87 lbs/ft  
90 lbs/ft  
GH, GK,  
GXCV  
120.53  
kg/m  
124.99  
kg/m  
129.46  
kg/m  
133.92  
kg/m  
66 lbs/ft  
69 lbs/ft  
72 lbs/ft  
76 lbs/ft  
79 lbs/ft  
GH, GK,  
GXSV  
98.21  
kg/m  
102.67  
kg/m  
107.14  
kg/m  
113.09  
kg/m  
117.55  
kg/m  
Canopy Hood  
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Installation  
NOTE: If you have a Back  
Supply Plenum (BSP), this must  
be installed before the hood.  
Please see Page 10.  
Fig. 1  
For Wall/Single Island Style  
Hoods, prior to installation,  
check with local authorities  
having jurisdiction on clearances  
to combustible surfaces, etc.  
Bottom  
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  
Pallet  
Protective Material  
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.  
Hood Installation Overview  
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.  
Filler Panel Installation Instructions  
1. Uncrate the hood and lay it on the floor  
HOOD  
with protective material between the hood  
and the floor. (Fig. 1)  
2. Bolt the filler panels together with 5/16 in.  
HOOD  
bolts provided in the hardware package.  
HOOD  
3. Position the filler panels to the hood back,  
and tack-weld them into place. (Fig. 2)  
T A CK-WELDED TO  
HOOD BACK  
4. To allow for ease of cleaning, caulk  
the external seams with NSF Approved  
5/16 IN. X 3/4 IN. BOL T S  
WITH WASHERS & NUTS  
RIGHT FILLER P A NEL  
silicone caulk (GE SCS1009, or its  
equivalent). The caulk is not provided.  
BOTTOM FILLER P A NEL  
Fig. 2  
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Hood Hanging Height  
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.  
Double Island Style Hoods  
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.  
Continuous Capture Plenum Hoods  
Remove the support angles on the open end panels. (see  
Fig. 3  
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  
HOOD FRONT  
HOOD  
equivalent). The caulk is not provided.  
CAULK  
BOLT  
ACORN NUT  
U-CLIP  
Fig. 4  
Installing U-Channel Strip  
1. After the hood is hung in position and  
leveled, apply caulk to the inside edge  
of the double island clip. (Fig. 5)  
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  
HOOD-1A  
HOOD-1B  
(GE SCS1009 or its equivalent). The  
caulk is not provided.  
SILICONE CAULK  
(GE SCS1009)  
DOUBLE ISLAND CLIP  
DOUBLE ISLAND CLIP  
DETAIL A  
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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.  
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.  
Ductwork  
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.  
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Installing External Supply Plenums  
Using the Supply Plenum Clip  
Fig. 6  
OPTION #2  
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.  
UNI-STRUT SUPPLIED BY OTHERS  
ROD  
Y OTHERS  
TOP VIEW  
HOOD  
OPTION #1  
FOR PLENUMS <= 96"  
2 CLIPS ARE NEEDED  
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.  
FOR PLENUMS > 96"  
3 CLIPS ARE NEEDED  
THE THIRD CLIP IS LOCATED  
IN THE CENTER OF THE PLENUM  
LENGTH  
OPTION #1  
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)  
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.  
11.5  
23.5  
TOP VIEW  
SUPPLY PLENUM  
HANGER BRACKET  
OPTION #1  
HANGING CLIP COULD BE 23.5" FROM  
END IF THERE IS A UTILITY CABINET  
ON THE END OF THE HOOD  
"C" CLAMP  
OPTION #1  
HOOD STANDING SEAM  
HANGING CLIP  
HANGING CLIP BOLTED TO PLENUM SHELL  
HANGING CLIP  
SUPPLY PLENUM SHELL  
HOOD FRONT  
Supply Plenum Clip  
Fig. 7  
OPTION #3  
THREADED ROD  
SUPPLIED BY OTHERS  
THREADED ROD  
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.  
OPTION #2  
THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE  
HOOD UP CANTILEVERS OVER THE END OF  
THE HOOD AND IS MOUNTED TO THE ASP  
HANGER BRACKETS  
END VIEW  
HOOD  
Fig. 8  
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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.  
Fig. 9  
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.  
ASP - Air Curtain Supply Plenum  
(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.  
Fig. 10  
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.  
HSP or VSP - Variable Supply Plenum  
External Supply Plenum Weights, Dimensions, and Supply Rates  
Length per  
Weight  
Width  
(mm)  
Height  
(in) (mm)  
section  
External Supply  
Plenum Type  
Recommended  
Supply Rate  
(lbs/ft)  
(kg/ft)  
(in)  
(ft)  
(m)  
.91 to  
4.88  
145 cfm/ft  
35.0  
9.5  
15.878  
6
152.4  
355.6  
609.6  
Variable Variable  
3 to 16  
Back Supply  
(246.36 m3/hr)  
Air Curtain Supply  
• 14 inch  
.91 to  
4.88  
110 cfm/ft  
4.31  
5.67  
14  
24  
10  
10  
254  
254  
3 to 16  
3 to 16  
(186.89 m3/hr)  
Air Curtain Supply  
• 24 inch  
.91 to  
4.88  
145 cfm/ft  
12.5  
(246.36 m3/hr)  
0-80 cfm/ft  
curtain  
face  
(0-135.92 m3/hr)  
.91 to  
4.88  
16.0  
14.0  
7.26  
6.35  
12  
12  
304.8  
304.8  
18  
18  
457.20  
457.20  
3 to 16  
3 to 16  
Variable Supply  
80-160 cfm/ft  
(135.92 -271.84 m3/hr)  
.91 to  
4.88  
150 cfm/ft  
Horizontal Supply  
(254.85 m3/hr)  
Using the UL Listed Fastener Provided  
HOOD  
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)  
1/4 - 20 UNC - 2A  
SS BOLT  
1/4 IN. SS NUT  
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 figuriNg 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.  
SS FLAT WASHER  
3. Hand tighten, then use a wrench until fully tightened. Caulk around bolts  
from inside of hood as necessary.  
Fig. 11  
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Installing the Back Supply Plenum  
Installing the Supply Duct Collar  
1. Find the center of the back supply plenum.  
L (MODULE LENGTH)  
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)  
L/2  
L/2  
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)  
Fig. 12  
The 4 in. (10.16 cm)  
high duct collar is to  
be attached to the  
back supply.  
L (MODULE LENGTH)  
L/2  
L/4  
L/4  
Fig. 14  
Fig. 13  
Hanging the Back Supply Plenum  
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)  
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.  
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Hanging the Hood  
Before hanging the hood according to the  
hood installation instructions, please check the  
following:  
Fig. 15  
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.  
Fasteners holding the  
back supply to the wall  
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)  
31.25 in.  
Critical  
Dimension  
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.  
Fig. 16  
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.  
Fig. 17  
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)  
Removable Air Diffusers  
3. Refasten with the stainless steel screws.  
Fig. 18  
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Installing Enclosure Panels  
Before installing the enclosure panels, make sure the hood is hung in position with all the ductwork  
attached and electrical connections completed.  
Fig. 19  
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.  
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Installing End Skirts  
.
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.  
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Installing Backsplash Panels  
FLAT BACKSPLASH PANEL  
MATERIAL GAUGE — STAINLESS  
LENGTH  
QTY  
WALL  
Inches  
<= 48  
Millimeters  
<= 1219.2  
1
2
3
4
5
>48<=94  
>94<=141  
>1219.2<=2387.6  
>2387.6<=3581.4  
HEIGHT  
>141<=188 >3581.4<=4775.2  
>188<=235 >4775.2<=5969  
LENGTH  
NOTE: PANELS UP TO 48 IN. (1219.2 MM) WIDE SHIP IN ONE PIECE; OVER 48 IN. (1219.2 MM) IN MULTIPLE PIECES.  
Fig. 21  
1 IN. (25.4 MM)  
INSULATED BACKSPLASH PANEL  
MATERIAL GAUGE — STAINLESS  
INSULATION — 1 IN. (25.4 MM)  
WALL  
LENGTH  
QTY  
Inches  
<= 46  
Millimeters  
<= 1168.4  
1
2
3
4
5
>46<=91  
>91<=136  
>1168.4<=2311.4  
>2311.4<=3454.4  
HEIGHT  
>136<=181 >3454.4<=4597.4  
>181<=226 >4597.4<=5740.4  
LENGTH  
NOTE: PANELS UP TO 46 IN. (1168.4 MM) WIDE SHIP IN ONE PIECE; OVER 46 IN. (1168.4 MM) IN MULTIPLE PIECES.  
Fig. 22  
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Installing Backsplash Panels  
HOOD FRONT PANEL  
HOOD END PANEL  
SLIDE FLANGE  
BEHIND BACK  
OF THE HOOD  
BACKSPLASH PANEL  
SECTION VIEW  
OF BACKSPLASH  
PANEL OVERLAP  
HOLES SHOULD BE SPACED TO  
ADEQUATELY SECURE THE PANEL  
TO THE WALL STUDS (HOLE SPACING  
AND FASTENERS PROVIDED BY OTHERS)  
Fig. 23  
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.  
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Installing Duct Collars  
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)  
Hanger Bracket  
Exhaust Plenum  
3.00  
14.00  
Duct Cut Out Area  
Hood Width  
16.00  
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.  
Supply Plenum  
Hood Length  
3.00  
Front of Hood  
8.00  
8.00  
Top View of the Hood  
Fig. 24  
8.00  
8.00  
Hood Top  
1.00  
3. The supply duct  
connection is tack-  
welded at 1 to 2 in.  
(2.54 to 5.08 cm)  
Exhaust Plenum  
12.00  
Duct Cut Out Area  
intervals, or sheet metal  
screws at 3 to 6 in.  
(7.62 cm to 15.24 cm)  
spacing to the hood.  
(Fig. 26)  
Back View of the Hood  
Fig 25  
SUPPLY  
INTERNAL  
SUPPLY  
CHAMBER  
FIRE DAMPER  
4. The deflector is  
centered under the  
supply duct collar.  
(Fig. 28)  
S
C
UPP  
L
E
Y
DUC  
T
ONN  
CT  
IO  
N
HOOD  
S
1
6
UPP  
L
2
Y
"
DUC  
T
S
C
O
O
R
NN  
S
E
H
C
EE  
T
I
T
O
M
N
T
O
A
B
L
E
S
T
A
C
K
WELDED WITH  
"
T
O
T
A
CK  
E
T
CR  
E
W
S
AT  
3
"
TO  
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).  
"
S
PACING  
TO  
HOOD.  
INSULATED  
SUPPLY PLENUM  
EXHAUST  
CAPTURE  
Fig. 26  
Fig. 27  
Fig. 28  
6. On combination hoods,  
make sure the fire  
Note: UL listed hood  
assembly to be used  
only with Greenheck  
Fan Corp. labeled  
subassembly for  
exhaust hood without  
exhaust damper part  
Number DC.  
damper is located over  
the internal supply  
chamber. (Fig. 29)  
DEFLECTOR TO BE PLACED CENTERED  
UNDER THE SUPPLY DUCT COLLAR  
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Exhaust Air Balancing Baffles (EABB)  
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:  
2
Max. Increase = 0.00000036 x (Duct velocity)  
Maximum Increase in Static Pressure for Exhaust Air Balancing Baffle  
(Fully Closed)  
4.5  
After the range for each hood is calculated,  
it should be compared to the hood with the  
4
highest static pressure. If the highest hood  
3.5  
falls inside of the range, then the hoods can be  
3
balanced with the EABB. If it is higher than the  
2.5  
range, the hoods cannot be balanced.  
2
Example 1:  
Hood 1:  
1.5  
1
Ps = 0.58 in. wg  
0.5  
0
Duct Velocity = 1900 FPM  
Ps = 0.44 in. wg  
500  
1000  
1500  
2000  
2500  
3000  
3500  
Duct Velocity FPM  
Hood 2:  
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:  
Hood 4:  
Ps = 2.00 in. wg  
Duct Velocity = 2000 FPM  
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.  
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Balancing the Kitchen Exhaust System  
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).  
Testing Hood Air Volume  
Baffle Filter Style Hoods  
Nominal Filter Size  
A. Exhaust:  
With all the filters in place, determine  
H/4  
the total hood exhaust volume with a  
rotating vane anemometer as follows:  
x
x
1. All cooking equipment should  
be on.  
H
x
2. Measure the velocities  
H/2  
x
x
H/4  
Velocity measurements should  
be taken at five locations per  
filter. These must be over a filter  
slot as in Fig. 29.  
Fig. 29  
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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.  
Rotating Vane Anemometer  
2 in.  
Fig. 30  
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.  
Nominal Filter Size (H x L)  
Imperial  
Metric  
Conversion Factor  
Conversion Factor  
Inches  
Millimeters  
400 x 400  
500 x 400  
400 x 500  
500 x 500  
16 x 16  
16 x 20  
20 x 16  
20 x 20  
1.63  
2.13  
1.90  
2.48  
.157  
.198  
.177  
.230  
Example: Exhaust Only Hood with three 20 x 16 Filters  
Measured velocities in fpm for one 20 x 16 Filter  
Sum of Velocity Readings  
250  
255  
(4572 m/h)  
(4663.44 m/h)  
256  
(4681.73 m/h)  
Average Velocity  
=
=
=
Number of Readings  
248  
240  
(4535.42 m/h)  
(4389.12 m/h)  
255 + 250 + 256 + 248 + 240  
5
(Imperial)  
= 249.8 fpm  
4663 + 4572 + 4681 + 4535 + 4389  
5
(Metric)  
= 4568 m/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  
.177  
x
x
249.8 fpm  
4568 m/hr  
=
=
474.6 cfm  
809 m3/hr  
Total hood volume  
= (Filter 1 Volume) + (Filter 2 Volume) + (Filter 3 Volume)  
=
=
474.6  
809  
+
+
455.4  
880  
+
+
470.1  
799  
= 1400.1 cfm  
= 2488 m3/hr  
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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  
Volume  
=
=
Avg. Velocity  
Avg. Velocity  
Length (in.)  
Length (m)  
Height (in.) 0.005  
*
*
*
*
*
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.  
Filter Readings (fpm)  
Filter Readings (m/hr)  
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  
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  
Example: Face Supply Hood with three 28 in. (.711 m) Perforated Panels  
Measured velocities in FPM for one perforated panel  
Sum of Velocity Readings  
Average Velocity  
=
=
=
Number of Readings  
260 + 250 + … + 265 + 260  
28  
(Imperial)  
= 270.7 fpm  
4755 + 4572 + … + 4846 + 4755  
28  
(Metric)  
= 4951 m/hr  
Measure Length and Height = 28 in. (.711 m) long perforated panels x 16 in. (.406 m) high  
Average  
Velocity  
Conversion  
Factor  
Volume for one panel =  
x
x Length x Height  
=
=
0.005  
0.72  
x
x
270.7 fpm  
4951 m/hr  
x
x
28  
x
x
16  
=
=
606.4 cfm  
1029 m3/hr  
.711  
.406  
Total system volume = (Panel 1 Volume) + (Panel 2 Volume) + (Panel 3 Volume)  
=
=
606.4  
1029  
+
+
614.3  
1044  
+
+
593.8  
1009  
=
1814.5 cfm  
3082 m3/hr  
=
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Testing Hood Air Volume  
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.  
Fig. 31  
Nominal Filter Size (H x L)  
Imperial  
Metric  
Conversion Factor  
Conversion Factor  
Inches  
Millimeters  
400 x 400  
400 x 500  
500 x 400  
500 x 500  
16 x 16  
16 x 20  
20 x 16  
20 x 20  
1.66  
2.10  
1.96  
2.40  
.154  
.195  
.182  
.223  
14 in.  
2.75 in.  
10 in.  
Example: Measured velocities for 20 x 20 filter = 185 and 189 fpm  
Fig. 32  
Fig. 33  
Fig. 34  
Sum of Velocity Readings  
Average Velocity  
(Imperial)  
=
=
=
17.25 in.  
Number of Readings  
6 in.  
185 + 189  
= 187.0 fpm  
2
10 in.  
3383 + 3456  
2
=
(Metric)  
3420 m/hr  
Conversion  
Average  
Velocity  
Flow rate for one filter =  
x
Factor  
14 in.  
=
=
2.40  
x
x
187.0 fpm  
3420 m/hr  
=
=
448.8 cfm  
763 m3/hr  
2.75 in.  
.223  
10 in.  
(Filter 1  
Flow Rate)  
(Filter X  
Flow Rate)  
Total hood flow rate  
=
+ … +  
= 448.8 + 457.8 + 437.5 + 444.8 = 1788.9 cfm  
= 763 + 778 + 743 + 756  
= 3040 m3/hr  
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High Velocity Cartridge Filters  
A. Exhaust  
1/2 Width  
1/4 Width  
1/4 Width  
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  
Fig. 35  
• Velocity measurement should be taken at three locations per filter.  
2 in.  
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.  
Rotation Vane  
Anemometer  
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.  
Fig. 36  
Imperial  
Cartridge Filter Size  
Metric  
Conversion Factor  
Conversion Factor  
3
3
16 in. (400 mm) high with 4 in. (100 mm) high inlet  
20 in. (500 mm) high with 4 in. (100 mm) high inlet  
16 in. (400 mm) high with 7 in. (120 mm) high inlet  
20 in. (500 mm) high with 7 in. (120 mm) high inlet  
1.63 1/ft  
2.15 1/ft  
1.24 1/ft  
1.58 1/ft  
5.35 1/m  
3
3
3
3
7.05 1/m  
3
4.07 1/m  
3
5.18 1/m  
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.  
Filter Readings (fpm)  
Sum of Velocity Readings  
Average slot velocity  
(Imperial)  
=
470  
482  
455  
399  
440  
430  
431  
439  
425  
453  
441  
465  
Number of Readings  
5330  
=
=
= 444.2 fpm  
12  
97474  
Filter Readings (m/hr)  
(Metric)  
= 8123 m/hr  
12  
8595  
8047  
7864  
7882  
8028  
7772  
8815  
8321  
7297  
8284  
8065  
8504  
Average Slot Velocity  
Conversion Factor  
444.2 fpm  
CFM per linear foot  
=
=
=
= 206.6 cfm/linear foot  
2.15  
8123 m/hr  
7.05  
1152 m3/hr  
=
Hood exhaust volume  
=
=
=
CFM/linear foot (m3/hr / m)  
x
x
x
Hood Length  
206.6  
1152  
9 ft.  
2.74 m  
= 1859.4 cfm  
= 3156 m3/hr  
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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.  
Fig. 37  
*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.  
Nominal Filter Size (H x L)  
Imperial  
Metric  
Conversion Factor  
Conversion Factor  
Inches  
Millimeters  
400 x 400  
400 x 500  
500 x 400  
500 x 500  
2
2
16 x 16  
16 x 20  
20 x 16  
20 x 20  
1.22 ft  
.113 m  
2
2
1.67 ft  
.155 m  
2
2
1.21 ft  
.112 m  
2
2
1.50 ft  
.139 m  
1/2 width  
Example: Measured velocities for 20 x 20 filter = 282 fpm (5157 m/hr)  
1/2 height  
Conversion  
Factor  
Average  
Velocity  
Flow rate for one filter  
=
x
x
(Imperial)  
(Metric)  
=
=
1.50  
.139  
282 fpm  
=
423.0 cfm  
717 m3/hr  
x 5157 m/hr =  
Total hood flow rate = (Filter 1 Flow Rate) + … + (Filter X Flow Rate)  
= 423.0 + 421.8 + 420.7 + 418.2 = 1683.7 cfm  
Fig. 38  
= 717 + 717 + 715 + 711  
= 2860 m3/hr  
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Grease-X-Tractor™ High Efficiency Filters or Grease Grabber™ Multi-Filtration System  
A. Exhaust  
1/2 Width  
With all the filters in place, determine the total hood exhaust  
volume with a rotating vane anemometer as follows:  
1/4 Width  
1/4 Width  
1. All cooking equipment should be off. If the hood has internal  
1/2 Height  
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.  
Fig. 39  
(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.  
2 in.  
3. Calculate the average velocity for the filter.  
4. Determine the filter’s conversion factor from the table.  
Rotating Vane  
Anemometer  
5. Calculate each filters volume in CFM by multiplying the average  
velocity by the conversion factor.  
Nominal Filter Size (H x L)  
Imperial  
Metric  
Conversion Factor  
Conversion Factor  
Inches  
Millimeters  
400 x 400  
400 x 500  
500 x 400  
500 x 500  
2
2
16 x 16  
16 x 20  
20 x 16  
20 x 20  
1.31 ft  
.122 m  
Fig. 40  
2
2
1.65 ft  
.153 m  
2
2
1.23 ft  
.114 m  
2
2
1.65 ft  
.153 m  
Example: (Imperial)  
Example: (Metric)  
Hood Length = 7 feet 0 inches with four 20 x 20 filters.  
Hood Length = 2.13 meters, with four 500 x 500 mm filters.  
Measure the velocities in fpm for each 20 x 20 filter  
(six readings per filter)  
Measure the velocities in m/hr for each 500 x 500 mm filter  
(six readings per filter)  
225  
210  
228  
237  
230  
250  
225  
245  
201  
238  
222  
240  
245  
223  
265  
221  
187  
197  
226  
220  
240  
219  
219  
200  
4114.80  
3840.48  
4169.66  
4334.26  
4420.12  
4572.00  
4114.80  
4480.56  
3675.88  
4352.54  
4059.94  
4389.21  
4480.56  
4078.22  
4846.52  
4041.65  
3419.86  
3602.74  
4133.08  
4023.36  
4389.12  
4005.07  
4005.07  
3657.60  
Filter 1  
Filter 2  
Filter 3  
Filter 4  
Filter 1  
Filter 2  
Filter 3  
Filter 4  
Sum of Velocity Readings  
Number of Readings  
1258  
Sum of Velocity Readings  
Number of Readings  
23006  
Average slot velocity for Filter 1  
=
=
Average slot velocity for Filter 1  
=
=
=
209.7 fpm  
=
3834 m/hr  
6
6
(repeat for each filter)  
(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  
For a nominal filter size of 500 x 500, the conversion factor is .153  
Volume for Filter 1 = Conversion Factor x Average Velocity  
=
1.65 ft2  
= 346.0 cfm (repeat for each filter)  
x
209.7 ft./min.  
=
.153 m2  
= 586.7 m3/hr (repeat for each filter)  
x
3834 m/hr  
Total hood volume  
Total hood volume  
Filter 1  
Volume  
346.0  
Filter 2  
Volume  
377.6  
Filter 3  
Volume  
386.9  
Filter 4  
Volume  
378.1  
Filter 1  
Volume  
587  
Filter 2  
Volume  
642  
Filter 3  
Volume  
657  
Filter 4  
Volume  
642  
=
=
+
+
+
+
+
+
=
=
+
+
+
+
+
+
=
1488.6 cfm  
=
2528 m3/hr  
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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  
Fig. 41  
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.  
Nominal Filter Size (H x L)  
Imperial  
Conversion Factor  
Metric  
Conversion Factor  
14.25 in.  
2.75 in.  
Fig. 42  
Inches  
Millimeters  
400 x 400  
400 x 500  
500 x 400  
500 x 500  
2.75 in.  
2
2
16 x 16  
16 x 20  
20 x 16  
20 x 20  
1.53 ft  
.142 m  
2
2
2.00 ft  
.185 m  
2
2
2.25 ft  
.209 m  
2
2
3.00 ft  
.279 m  
Example:  
Fig. 43  
Measured velocities for 20 x 20 in. (500 x 500 mm) filter.  
Sum of Velocity Readings  
Number of Readings  
Average slot velocity  
(Imperial)  
=
198 + 205  
=
=
= 201.5 fpm  
2
2.5 in.  
3.25 in.  
14.75 in.  
3021 + 3749  
2
(Metric)  
= 3385 m/hr  
14.25 in.  
2.75 in.  
Flow rate for one filter  
=
=
Conversion Factor  
3.0  
x
x
Average Velocity  
Fig. 44  
201.5 fpm  
3385 m/hr  
=
604.5 cfm  
944 m3/hr  
2.75 in.  
=
.279  
x
=
Filter 1  
Flow Rate  
Filter X  
Flow Rate  
Total hood flow rate  
=
=
+
+
+
604.5  
+
+
600.3  
1020  
592.4  
1006  
+
+
2410.5 cfm  
4012 m3/hr  
613.3  
1042  
=
=
944  
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Testing Hood Air Volume  
Short Circuit Hoods  
A. Supply  
Fig. 45  
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.  
Example: 4 ft. (1.22 m) short circuit hood (36 in. (.914 m) short circuit opening):  
Number of readings  
Average slot velocity  
= 36 in. / 8 in. => 6 readings  
(.914 m / .2 m => 6 readings)  
Sum of Velocity Readings  
=
Number of Readings  
786 + 900 + 1126 + 1048 + 1111 + 1115  
6
6086  
6
(Imperial)  
(Metric)  
=
=
=
=
= 1014.3 fpm  
= 1723 m/hr  
1335 + 1529 + 1913 + 1780 + 1888 + 1894  
6
10339  
6
Average Slot Velocity  
Conversion Factor  
CFM per linear foot  
=
=
=
1014.3 fpm  
= 183.8 cfm/linear foot  
5.52  
1723 m/hr  
= 1026 m3/hr  
1.68  
3
Hood supply volume  
= CFM/linear foot (or m /hr) x Total Hood Length  
=
=
183.8  
1026  
x
x
4 ft.  
1.22 m  
= 735.2 cfm  
= 1252 m3/hr  
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Amerex Wiring Plan View  
POWER SOURCE  
MANUAL RESET RELAY  
PRM  
ELECTRIC GAS VALVE  
MICROSWITCH  
INSTALLER PROVIDED JUNCTION BOXES  
BASIC WIRING DIAGRAM  
POWER SOURCE  
MANUAL RESET RELAY  
RED (COMMON)  
YELLOW (N.O)  
BLACK (N.C.)  
GAS VALVE  
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.  
MICROSWITCH  
BASIC WIRING DIAGRAM  
MANUAL RESET RELAY  
L1  
RED (COMMON)  
120V/60HZ  
L2  
K1  
Ka  
PUSHBUTTON SWITCH  
YELLOW (N.O)  
K1b  
BLACK (N.C.)  
MICROSWITCH  
CURRENT DRAW MAX:  
8A RESISTIVE  
8A INDUCTIVE  
120VAC  
GAS VALVE  
SEE NOTE 3  
NOTES:  
1.  
2.  
DENOTES FIELD INSTALLATION  
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.  
Fig. 46  
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Ansul Wiring Plan View  
2 Snap-Action Switches provided by Greenheck  
may be wired as shown.  
Option A  
Relay Part No. 14702  
Four typical examples shown  
* K1a and K1b are N.O. when K1 is de-energized  
Manual Reset Relay  
L1  
1
Equipment  
Part No. 14702  
Power to cooking  
110V/60HZ  
equipment  
2
Black  
Red  
L2  
K1*  
3
Shunt Trip Breaker  
NO  
Brown  
K1a  
N.O.  
Snap-Action Switch  
Part No. 423878  
5
6
120 VAC  
Input  
N
K1b N.O.  
Push Button  
Switch  
Gas Valve  
See Note 3  
NC  
7
8
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.  
Alarms  
NO  
NO  
Ansul Snap-Action Switch  
(Switch contacts shown with Ansul  
Automan in the cocked position)  
Voltage Free  
Option B  
Relay Part No. 426151  
Input  
Contacts for  
Building Alarm(s)  
NC  
Black  
Red  
Snap-Action Switch  
Part No. 423878  
NC  
Reset  
Power  
Indicator  
Brown  
GND  
Power to  
Fan(s)  
A
B
Screw 5  
4
L2 Neutral  
L1 Hot  
Waterwash  
Fan  
Starter  
Relay Coil  
110 VAC/60HZ  
3
6
9
3
4
3
2
1
NO  
NC  
4
7
1
Terminal strip in  
Waterwash Control Panel  
5
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  
6
Fans  
Note:  
1.  
2.  
NO  
NC  
Denotes field installation.  
Denotes factory installation.  
120 VAC  
N
Power to  
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.  
Input  
fan(s)  
Fan Starter  
Manual Switch  
If prohibited by local codes, do not shut down  
exhaust fans with this method of wiring.  
Fig. 47  
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Overall Wiring Plan View  
C O N T R O L C E N T E R  
T O M A K E - U P A I R  
R
Y P O W S E U P P L  
Fig. 48  
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Wiring for Hood Switch Panels  
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.  
COMBINED EXHAUST & SUPPLY SWITCHING  
EXHAUST FAN CONTACT  
OPTIONAL  
SUP FAN  
JUNCTION BOX  
OL  
FSC1  
ON TOP OF HOOD  
FOR FIELD  
115VOLT  
CONTROL  
CONTROL  
OL  
EXH  
FAN  
STR  
SUP  
FAN  
STR  
SUP  
HTR  
CTRL  
SUPPLY FAN CONTACT  
CONNECTION OF  
120 VOLT  
VOLTAGE  
SUPPLY POWER  
HOOD SWITCH  
PANEL DETAIL  
HOOD  
LIGHTS  
LIGHT  
SWITCH  
EXHAUST & SUPPLY  
SWITCH  
HEATER  
SWITCH  
SEPARATE EXHAUST & SUPPLY SWITCHING  
EXHAUST FAN CONTACT  
OL  
SUPPLY FAN CONTACT  
OL  
CONTROL  
VOLTAGE  
JUNCTION BOX  
ON TOP OF HOOD  
FOR FIELD  
EXH  
FAN  
STR  
SUP  
FAN  
STR  
SUP  
HTR  
CTRL  
H
N
CONNECTION OF  
120 VOLT  
SUPPLY POWER  
HOOD SWITCH  
PANEL DETAIL  
LIGHT  
SWITCH  
EXHAUST  
SWITCH  
SUPPLY  
SWITCH  
HEATER  
SWITCH  
HOOD  
LIGHTS  
Fig. 49  
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Circuit Diagrams  
Single Pole  
Double Pole  
OFF  
ON  
OFF  
ON  
OFF  
ON  
OFF  
ON  
OFF  
ON  
OFF  
ON  
ON (NC)  
ON (NC)  
ON (NC)  
ON (NO)  
ON (NC)  
ON (NO)  
ON (NO)  
ON (NC)  
ON (NO)  
ON (NC)  
ON (NO)  
ON (NO)  
ON  
OFF  
ON  
ON  
ON  
OFF  
ON  
OFF  
ON  
Series Circuit  
Parallel Circuit  
Off if both are not activated  
Off if either are not activated  
On if both are activated  
Off if both are not activated  
On if either is activated  
On if both are activated  
On if both are not activated  
Off if either are not activated  
Off if both are activated  
On if either is activated  
Off if either not activated  
Off if both are activated  
Fig. 50  
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Maintenance  
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.  
Condensate Hood Baffle Installation  
1. Grasp the baffle with drain holes facing  
CORRECT  
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.  
UPPER HANGER  
CONDENSATE  
2. After the baffle clears the drain channel of  
GUTTER  
the hood, turn the baffle so it is lined up with  
the upper hanger in the hood.  
Fig. 51  
3. Hook the upper channel of the baffle over  
INCORRECT  
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  
UPPER HANGER  
the hood.  
4. Center the baffle from side to side in the  
CONDENSATE  
GUTTER  
hood.  
Fig. 52  
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Grease Grabber™ Filter Installation  
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. 53  
Fig. 54  
Fig. 55  
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Grease Grabber™ Filter Cleaning  
Step 1 Remove the front GX filters: (1A) Remove middle filters first, (1B) slide ends toward middle and remove.  
GG Filters, second row of filters  
GX Filters, first row of filters  
1A  
1B  
1C  
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.  
Slide  
hooks  
2A  
2B  
2C  
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.  
Pull filter down  
Slide  
filter up  
Pull bottom of  
filter towards yourself  
3A  
Step 4 Frequent Maintenance:  
3B  
3C  
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  
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.  
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Filter Washing Frequency Guide  
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.  
Time  
or  
Cycles  
Baffle Filter or  
Grease-X-Tractor™  
Wash Frequency  
Washing Equipment  
Cooking  
Equipment  
Frequency  
Required  
Preference  
Chemical  
Type  
Temp  
Every 3 days  
2 Cycles  
Twice a week  
1 Cycle  
Griddle  
Fryer  
Every 3 days  
Weekly  
Daily  
2 Cycles  
2 Cycles  
Commercial  
Grade Dish  
Washer  
Dish  
Washer  
Detergent  
1
Best  
180º F  
Min  
Daily  
2 Cycles  
Daily  
Charbroiler  
Wok  
2 Cycles  
Daily  
2 Cycles  
2 Cycles  
Every 3 days  
2 Cycles  
Twice a week  
2 Cycles  
Daily  
Griddle  
Fryer  
Every 3 days  
Weekly  
Daily  
3 Cycles  
Low Temp.  
Dish Washer  
(Chemical  
Sanitizer)  
3 Cycles  
Dish  
Washer  
Detergent  
2
3
4
140º F  
Charbroiler  
Wok  
4 Cycles  
2 Cycles  
Daily  
Daily  
4 Cycles  
2 Cycles  
Every 3 days  
5 minutes  
Twice a week  
5 minutes  
Daily  
Griddle  
Fryer  
Every 3 days  
Weekly  
Daily  
10 Minutes  
10 Minutes  
15 Minutes  
15 Minutes  
15 Minutes  
15 Minutes  
25 Minutes  
25 Minutes  
Power  
Wash Sink  
(Whirlpool)  
with Heater  
180º F  
Min  
Pot & Pan  
Detergent  
Charbroiler  
Wok  
5 minutes  
Daily  
Daily  
5 minutes  
Daily  
5 minutes  
Twice a week  
5 minutes  
Daily  
Griddle  
Fryer  
Every 3 days  
Weekly  
Daily  
Power  
Wash Sink  
(Whirlpool)  
no Heater  
Pot & Pan  
Detergent  
140º F  
Charbroiler  
Wok  
10 minutes  
Daily  
10 minutes  
Daily  
Daily  
Griddle  
Fryer  
Every 2 days  
Every 2 days  
1 Hour  
1 Hour  
Soak 10 min., then scrub with  
scour pad and bottle brush  
Daily  
Pot Sink  
with Heater  
Pot & Pan  
Detergent  
and/or  
Soak 5 min., then scrub with  
scour pad and bottle brush  
5
180º F  
(rinse with  
sprayer after  
soaking)  
Degreaser  
Charbroiler  
Wok  
Daily  
Daily  
2 Hours  
2 Hours  
Daily  
Soak 10 min., then scrub with  
scour pad and bottle brush  
2 Hours  
Griddle  
Fryer  
Daily  
Change hot water  
every 30 minutes  
Pot Sink  
Commercial  
Grade  
Kitchen  
no Heater  
2 Hours  
Every 2 days Change hot water  
every 30 minutes  
Daily  
6
140º F  
Soak 10 minutes then scrub  
with scour pad & bottle brush  
(rinse with  
sprayer after  
soaking)  
Worst  
Degreaser  
Charbroiler  
Wok  
Not Recommended  
Not Recommended  
Canopy Hood  
35  
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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.  
Problems with make-up air may interfere with the exhaust fan -  
check the manufacturers installation manual.  
Is the make-up air operating?  
Does the airflow need to be increased?  
Adjust or replace pulleys to increase fan RPM, install a larger motor.  
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.  
Does the fan vibrate?  
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.  
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.  
Is the fan correctly sized?  
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.  
One hood may be over exhausting and the other hood not drawing  
enough. Restrict second hood to help problem hood.  
Are there multiple hoods on one fan?  
Are there closed dampers in the duct?  
Is the ductwork complex or to small?  
Is the ductwork obstructed?  
Open dampers.  
Change to a higher static fan, modify the ductwork.  
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 Move diffusers to more neutral area or replace with a diffuser that  
the hood?  
directs air away from the hood.  
Are there open windows or doors?  
Close windows and doors.  
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.  
Are there cross drafts or other drafts in  
the kitchen?  
Add side skirts to hood (test with cardboard first); increase the  
amount of overhang on spillage side.  
Is the hood near a main walkway?  
Canopy Hood  
36  
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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.  
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).  
Is the make-up air part of the hood  
or an attached plenum?  
Problem: Pilot lights are being blown out or cooking equipment is being cooled by 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  
Are there drafts from make-up air?  
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.  
Turn off or reduce the amount of air supplied to the air curtain; heat  
the supply air.  
Is this an air curtain hood?  
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.  
Hood is not drawing enough air, see sections above on fan  
performance and hood capture.  
Is the hood capturing?  
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?  
Is the caulk missing or damaged?  
Is the grease cup inserted properly?  
Exhaust duct is not correctly welded.  
Clean problem area and re-caulk.  
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)  
Canopy Hood  
37  
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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?  
Replacement Parts  
GREENHECK  
FILTER DESCRIPTION  
PART NUMBER  
(HEIGHT X WIDTH X DEPTH)  
457626  
457628  
457632  
457634  
457627  
457629  
457633  
457635  
851656  
851657  
851659  
851660  
851703  
851704  
851706  
851707  
851709  
851710  
851712  
851713  
458763  
458764  
454878  
454879  
852208  
852207  
852388  
852389  
16 x 16 x 2 Aluminum Baffle Filter  
16 x 20 x 2 Aluminum Baffle Filter  
20 x 16 x 2 Aluminum Baffle Filter  
20 x 20 x 2 Aluminum Baffle Filter  
16 x 16 x 2 Stainless Steel Baffle Filter  
16 x 20 x 2 Stainless Steel Baffle Filter  
20 x 16 x 2 Stainless Steel Baffle Filter  
20 x 20 x 2 Stainless Steel Baffle Filter  
16 x 16 High Velocity Cartridge Filter  
16 x 20 High Velocity Cartridge Filter  
20 x 16 High Velocity Cartridge Filter  
20 x 20 High Velocity Cartridge Filter  
16 x 16 Grease-X-Tractor™ Aluminum Filter  
16 x 20 Grease-X-Tractor™ Aluminum Filter  
20 x 16 Grease-X-Tractor™ Aluminum Filter  
20 x 20 Grease-X-Tractor™ Aluminum Filter  
16 x 16 Grease-X-Tractor™ SS Filter  
16 x 20 Grease-X-Tractor™ SS Filter  
20 x 16 Grease-X-Tractor™ SS Filter  
20 x 20 Grease-X-Tractor™ SS Filter  
®
16 x 16 Flame Gard 1 Baffle Filter  
®
16 x 20 Flame Gard 1 Baffle Filter  
®
20 x 16 Flame Gard 1 Baffle Filter  
®
20 x 20 Flame Gard 1 Baffle Filter  
20 x 16 Grease Grabber™ Second Stage Filter  
20 x 20 Grease Grabber™ Second Stage Filter  
16 x 16 Grease Grabber™ Second Stage Filter  
16 x 20 Grease Grabber™ Second Stage Filter  
Canopy Hood  
38  
®
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Replacement Parts  
GREENHECK  
REGISTERS  
PART NUMBER  
452700  
452701  
452702  
452703  
453796  
453797  
453798  
453799  
452729  
452730  
452731  
452732  
452733  
24 x 8 Aluminum Single Deflection H-OB  
36 x 8 Aluminum Single Deflection H-OB  
36 x 8 Aluminum Single Deflection H-OB  
44 x 8 Aluminum Single Deflection H-OB  
24 x 12 Aluminum Single Deflection H-OB  
36 x 12 Aluminum Single Deflection H-OB  
38 x 12 Aluminum Single Deflection H-OB  
44 x 12 Aluminum Single Deflection H-OB  
24 x 8 Aluminum 38° Fixed Blade RA-OB  
30 x 8 Aluminum 38° Fixed Blade RA-OB  
36 x 8 Aluminum 38° Fixed Blade RA-OB  
38 x 8 Aluminum 38° Fixed Blade RA-OB  
44 x 8 Aluminum 38° Fixed Blade RA-OB  
GREENHECK  
PART NUMBER  
SWITCHES  
850551  
851776  
851777  
851778  
851779  
851780  
851781  
851782  
851783  
851784  
851510  
851511  
851512  
851618  
Light Switch Only  
Fan Switch Only  
Light Switch & Fan Switch ( 2 switches)  
Fan Switch & Heat Switch (2 switches)  
Exhaust, Fan & Supply Switch (2 switches)  
Light, Fan & Heat Switch (3 switches)  
Light, Exhaust, Supply Separate Switch (3 switches)  
Exhaust, Supply, Heat Separate Switch (3 switches)  
Light, Exhaust, Supply, Heat Separate Switch (4 switches)  
Fan Switch & Temper (3 position) (2 switches)  
Light, Fans, & Temper (3 position) (3 switches)  
Exhaust, Supply, & Temper (3 position) (3 switches)  
Light, Exhaust, Supply, & Temper (3 position) (4 switches)  
Automatic Fire Damper Test Switch  
GREENHECK  
PART NUMBER  
MISCELLANEOUS  
451131  
453498  
851744  
851834  
851747  
Grease Cup  
Glass Globes for hood lights (clear)  
Grease Extractor Filter Removal Tool  
Baffle Filter Removal Tool  
High Velocity Cartridge Filter Removal Tool  
Canopy Hood  
39  
®
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Warranty  
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: [email protected]Website: www.greenheck.com  
®
452413 • Canopy Hood, Rev. 7, March 2008  
Copyright 2008 © Greenheck Fan Corp.  
40  
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