Wells GK48 User manual

WELLS MANUFACTURING
265 Hobson Street, Smithville, Tennessee 37166
telephone: [phone]
www.wells-mfg.com
IMPORTANT: DO NOT DISCARD THIS MANUAL
This manual is considered to be part of the appliance and is to be given to the OWNER or
MANAGER of the restaurant, or to the person responsible for TRAINING OPERATORS of
this appliance. Additional manuals are available from your WELLS DEALER.
THIS MANUAL MUST BE READ AND UNDERSTOOD BY ALL PERSONS USING OR
INSTALLING THIS APPLIANCE. Contact your WELLS DEALER if you have any
questions concerning installation, operation or maintenance of this equipment.
OWNERS MANUAL
VENTLESS UNIVERSAL
HOOD SYSTEM
for
ELECTRIC
COOKING
APPLIANCES
MODEL
WVU48
GK48
Manual Includes
INSTALLATION
USE & CARE
EXPLODED VIEW
PARTS LIST
WIRING DIAGRAM
522
2M-Z23068 Rev. -
IL2372
01/2020

LIMITED EQUIPMENT WARRANTY
Wells Manufacturing warranties new products to be
free from defects in material and/or workmanship
for a period of one [1] year from the date of original
installation, except as noted below. Defects that occur
as a result of normal use, within the time period and
limitations defined in this warranty, will at Wells’
discretion have the parts replaced or repaired by Wells
or a Wells-authorized service agency.
THIS WARRANTY IS SUBJECT TO ALL LISTED CONDITIONS.
Repairs performed under this warranty are to be
performed by a Wells authorized service agency. Wells
will not be responsible for charges incurred or service
performed by non-authorized repair agencies. In all
cases, the nearest Wells-authorized service agency
must be used. Wells will be responsible for normal
labor charges incurred in the repair or replacement
of a warrantied product within 50 miles (80.5 km)
of an authorized service agency. Time and expense
charges for anything beyond that distance will be
the responsibility of the owner. All labor will need
to be performed during regular service hours. Any
overtime premium will be charged to the owner. For all
shipments outside the U.S.A. and Canada, please see
the International Warranty for specific details. It is the
responsibility of the owner to inspect and report any
shipping damage claims, hidden or otherwise, promptly
following delivery. No mileage or travel charges will be
honored on any equipment that is deemed portable. In
general, equipment with a cord and plug weighing less
than 50 lb. (22.7 kg) is considered portable and should
be taken or shipped to the closest authorized service
agency, transportation prepaid.
WARRANTY EXCLUSIONS
THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY.
• Any product which has not been used, cleaned, maintained,
or installed in accordance with the directions published in the
appropriate installation sheet and/or owner’s manual as well
as national and local codes, including incorrect gas, electrical,
or water connection. Lang is not liable for any unit which has
been mishandled, abused, misapplied, subjected to chlorides,
harsh chemicals, or caustic cleaners, damaged from exposure
to hard water, modified by unauthorized personnel, damaged
by flood, fire, or other acts of nature [or God], or which have
an altered or missing serial number.
• Installation, labor, and job checkouts, calibration of heat
controls, air and gas burner/bypass/pilot adjustments, gas
or electrical system checks, voltage and phase conversions,
cleaning of equipment, or seasoning of griddle surface.
• Replacement of fuses or resetting of circuit breakers, safety
controls, or reset buttons.
• Replacement of broken or damaged glass components,
quartz heating elements, and light bulbs.
• Labor charges for all removable parts in gas charbroilers
and hotplates, including but not limited to burners, grates,
and radiants.
• Any labor charges incurred by delays, waiting time, or oper-
ating restrictions that hinder a service technician’s ability to
perform service.
• Replacement of items subject to normal wear or items that
can easily be replaced during a daily cleaning routine, such as
but not limited to knobs, bulbs, fuses, quartz heating ele-
ments, baskets, racks, and grease drawers.
• Components that should be replaced when damaged or
worn, but have been field-repaired instead [eg. field-welded
fry pots]
• Any loss of business or profits.
ADDITIONAL WARRANTIES
• Specific/chain specific versions may also have additional
and/or extended warranties.
PRODUCTS PARTS LABOR
Universal ventless hoods (WVU) 1 year 1 year
Canopy ventless hoods (WVC) 1 year 1 year
*Universal ventless hoods and/or
canopy ventless hoods purchased
with approved Southbend-Star
electric equipment
*Southbend-Star approved electric
equipment purchased and installed
under ventless hood
**Universal Ventless Hood and
Southbend-Star electric equipment
must be on the same PO and listed
on the ventless start-up document
for the 2 year warranty to apply
2 years 2 years
“Cook’n Hold” equipment [HW10, HWSMP,
LLSC7, LLSC7WA, LLSC11, and LLSC11WA] 2 years 1 year
Cast iron grates, burners; and burner shields1 year
Wells parts sold to repair equipment 90 days
Service First 1 year
CONTACT
Should you require any assistance regarding the
operation or maintenance of any Wells equipment;
write, phone, fax or email our service department. In all
correspondence mention the model number and serial
number of your unit, as well as the voltage or type of
gas you are using.
Business hours are 8:00 a.m. to 4:30 p.m. Central
Standard Time (CST)
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
www.wells-mfg.com
The foregoing warranty is in lieu of any and all other warranties expressed or implied and constitutes the entire warranty. 2M-Z22393 · Rev. B · 01.2019
• Ansul deployments are not covered under warranty.
xi

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
1
Thank You for purchasing this Wells Manufacturing appliance.
Proper installation, professional operation and consistent maintenance of this appliance will ensure
that it gives you the very best performance and a long, economical service life.
This manual contains information and instructions for the ventless ventilation hood, its use and care.
For information regarding cooking appliance(s), please refer to the manufacturer’s operation manual.
TABLE OF CONTENTS
ELECTRICAL SPECIFICATIONS
INTRODUCTION
Model Volts Hz Amps Power Supply
WVU48/GK48 208/240V 60 Hz 3.5 For supply connection use #12 AWG copper wire only.
WARRANTY xi
ELECTRICAL SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2-3
PRECAUTIONS & GENERAL INFORMATION 4
AGENCY LISTING INFORMATION 5
INSTALLATION 5
Unpacking & Inspection 5
Components 5
Under-Hood Appliance Limitations 6-7
Service Technician Installation Notes 8-9
Base Assembly 10-24
 Under-HoodSpecicLimitations 25-27
Electrical Installation 28-29
ANSUL® INSTALLATION & SETUP 30-31
Filter Installation 32
OPERATION 33
Operation Lights 33
CLEANING INSTRUCTIONS 34-35
DISCHARGE DIRECTION CHANGE 36
REQUIRED MAINTENANCE & MAINTENANCE LOGS 37-41
TROUBLESHOOTING SUGGESTIONS 42
WIRING DIAGRAM 43
EXPLODED VIEW & PARTS LIST 44-53
PARTS & SERVICE 54
CUSTOMER SERVICE DATA 54
APPLICATION FOR VENTLESS APPROVALS 55-56

2
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
FEATURES & OPERATING CONTROLS
VENTILATOR CONTROL PANEL
see page 15
IL2391a
12 11
13
14
20
19
15
24
10
9
43 5 6
7
8
16
17
2
22
23
21
1
18
Ventilator Section Operating Features & Controls

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
3
FEATURES & OPERATING CONTROLS continued
FEATURES & OPERATION CONTROLS
ITEM
NO DESCRIPTION COMMENT
1VENTILATOR EXHAUST DUCT,
TOP Exitpointforventilatorairow-ontopofunit.DO NOT BLOCK
2VENTILATOR EXHAUST DUCT,
FRONT Exitpointforventilatorairow-onfrontofunit. DO NOT BLOCK
3 VENTILATOR FAN Provides air movement for ventilation
4HI-EFFICIENCY/CHARCOAL
FILTER PACK
Removes grease and smoke particles. Also assists in cooking
odor removal.
5 NAMEPLATE Gives manufacturer, make and model description. Also list
voltage and amperage data.
6FIRE SUPPRESSION TANK Container for ANSUL® Low-pHLiquidresuppressionuid.
7ACTUATOR ASSY Triggersdeploymentofsuppressionuidthroughmanualpull
station or electric detection.
8 ANSUL® CARTRIDGE Propels suppression liquid through suppression manifold and
nozzles.
9 MANUAL PULL STATION Providesameansofmanualactivationoftheresuppression
system. PULL ONLY IN CASE OF FIRE!
10 ADJUSTABLE LEGS Allows the unit to be leveled.
11 AIR WALL A wall of air that moves the grease and smoke particles into the
ltersystem.
12 DISCHARGE NOZZLES Fire suppression media discharges here, (6 places 48”, 12
places 96”)
13 ELECTRICAL DETECTORS
Designedtoactivateatcertaintemperature.Activates(i.e.re
onthecooktop)activatesresuppressionsystem.Shouldbe
checked every 6 months during ANSUL® Service Inspection
14 APPLIANCE LIGHT ON when hood power switch is ON. Illuminates cooking area.
15 GREASE DRIP TRAY Collectsgrease/moisturedrippingfrombafelter(16)
16 BAFFLE FILTER Extractsanddrainsmostgreasesandmoisturefromtheairow.
17 PRE-FILTER ASSEMBLY
Comprises the PRE-FILTER FRAME and a replaceable PRE-
FILTER. Stops large particles of grease from reaching the
FILTER PACK for reduced maintenance costs.
18 ELECTRICAL CONNECTION BOX Houses electrical components
19 GROUND LUG Ground wire of power connection connects here.
20 EQUIPMENT INTERFACE
CONTACTOR
Energizes cooking appliances only while ventilator section is
sensed as operational.
21 BUILDING FIRE ALARM RELAY Reportsrealarmconditiontobuildingremanagementsystem.
22 DETECTION END OF LINE
RELAY
Prevents appliance operation if a fault is found in detection
circuit.
23 SUPPLY CONNECTION
TERMINAL BLOCK Provides connection point for electrical circuitry
24 FILTER INTERLOCK SWITCHES Properinstallationofbafelterandlterpackclosesthese
switches in ventilator sensor circuit

4
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
PRECAUTIONS AND GENERAL INFORMATION
This ventilator hood is part of an engineered system and is intended for
use in commercial establishments only.
This ventilator is intended for commercial establishments for use
in the preparation of food for human consumption. No other use is
recommended or authorized by the manufacturer or its agents.
Operators of this appliance must be familiar with the appliance use,
limitations and associated restrictions. Operating instructions must be
read and understood by all persons using or installing this appliance.
This ventilator hood system is designed to reduce odor emissions,
but will not completely eliminate all cooking odors. Air exchange
rates at the installation site must comply with the requirements of the
local jurisdictional authority. To ensure that odors do not accumulate,
recommended minimum air exchange is 200 cfm per linear foot of hood
into and out of the site.
This unit is intended for use with light- and medium duty electric
cooking appliances only. Cooking appliances placed under this
ventilator must comply with the restrictions set forth in the Installation
section of this manual.
Do not connect or energize this appliance until all installation
instructions are read and understood. Property damage or bodily
injury may result if these instructions are not followed. Disconnect this
appliance from electrical power before performing any maintenance or
servicing.
Cleanliness of this appliance is essential to good sanitation. Read and
follow all included cleaning instructions and schedules to ensure the
safety of the food product.
This appliance is not jet steam approved. Do not direct water jet or
steam jet at this appliance, or at any control panel or wiring.
Do not splash or pour water on, in or over any controls, control panel or
wiring.Donotattempttowashlterpacks.Waterwillcausetheir
immediate failure and disable the ventilator.
Exposed surfaces of this appliance can be hot to the touch and may
cause burns.
Avoidstoringammableorcombustiblematerialsin,onornearthe
ventilator or associated cooking appliance.
The technical content of this manual, including any wiring diagrams,
schematics, parts breakdown illustrations and/or adjustment
procedures,isintendedforusebyqualiedtechnicalpersonnel.
Any procedure which requires the use of tools must be performed by a
qualiedtechnician.
All supplied instructions, diagrams, schematics, parts breakdown
illustrations, notices and labels must remain with the appliance if the
unit is sold or moved to another location.
This appliance is made in the USA. Unless otherwise noted, this
appliance has American (SAE) sizes on all hardware.
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilatorwithgas-redunits.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components must
be performed by a factory
authorized technician.
DO NOT open any access
panel which requires the use
of tools. Failure to follow this
warning can result in severe
electrical shock.
IMPORTANT:
The ventilator is disabled
whentheltersareplugged
tothepointofinsufcient
airowforproperoperation.
Also, power to the cooking
appliances is interrupted if
anyltersorservicepanel
are removed.
It is the responsibility of
the store management to
maintainsufcientspares
oflterpackstoavoid
prolonged shutdown due
toadirtyorcloggedlter
pack. Filter packs cannot be
cleaned.
Wells Manufacturing
assumes no liability for loss
ofbusinessduetoalter
related shutdown. Spare
lterscanbepurchased
from any authorized Wells
servicer or calling Wells.

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
5
AGENCY LISTING INFORMATION
INSTALLATION
NOTE: DO NOT discard
the carton or other packing
materials until you have
inspected the appliance for
hidden damage and tested it
for proper operation.
Refer to SHIPPING DAMAGE
CLAIM PROCEDURE on the
inside front cover of this
manual.
WARNING:
RISK OF INJURY
Installation procedures must
beperformedbyaqualied
technician with full knowledge
of all applicable electrical
codes. Failure can result in
personal injury and property
damage.
IMPORTANT:
Fire suppression system must
bechargedandcertiedbyan
authorized Ansul® distributor.
Ventilator will not operate and
cooking appliance will not be
energizeduntiltheAnsul®re
suppression system has been
charged.
IMPORTANT:
After cooking appliances
are positioned under the
hood, swivel nozzles must
be positioned per Ansul®
recommendations.
UNPACKING & INSPECTION
Carefully remove the appliance from the carton. Remove all
protectiveplasticlm,packingmaterialsandaccessoriesfromthe
appliance before connecting electrical power or otherwise performing
any installation procedure.
Carefully read all instructions in this manual and any other docments
packed with the appliance before starting any installation.
All documentation should remain with the equipment operator for future
reference.
Read and understand all labels and diagrams attached to the
ventilator.
Carefully account for all components and accessories before
discarding packing materials.
COMPONENTS
4 ft
Pre-Filter 2 ea.
Bafe Filter 2 ea.
Filter pack 1 ea.
Grease cup 1 ea.
Ansul® components - must be installed by an authorized Ansul®
distributor only:
4 ft
2 ea. Fire suppression agent tank
2 ea. Fire suppression agent (Ansulex® Low pH) 1.5 gal.
1 ea. Fire suppression system charging cartridge
Store these components in a convenient place for later use.
Theunitisshippedconguredforhorizontaldischargeoftheexhaust.
To convert to vertical discharge:
1. Remove top access cover.
2. Remove internal turning vane.
3. Insert top discharge scoop assy and fasten w/hardware from cover.
4. Remove front dischage vent panel and damper assy.
5. Assemble damper in Top discharge scoop assy.
6. Replace front discharge vent panel.
This appliance conforms to NSF Standard 2 for sanitation only if
installed in accordance with the supplied Installation Instructions
and operated and maintained in accordance with the instructions in this
manual.
UL CLASSIFIED for use in US and Canada
UL710B
Recurculating System
SANITATION
NSF/ANSI 2

6
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
INSTALLATION (continued)
UNDER-HOOD APPLIANCE LIMITATIONS:
WELLS MANUFACTURING
265 HOBSON ST.
SMITHVILLE, TN 37166, USA

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
7
INSTALLATION (continued)
UNDER-HOOD APPLIANCE LIMITATIONS:
WELLS MANUFACTURING
265 HOBSON ST.
SMITHVILLE, TN 37166, USA
Special instructions: Any Oven or Combi with a vertical exhaust will need a diverter or diffuser to redirect awa from thermal detectors.

8
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
INSTALLATION (continued)
SERVICE TECHNICIAN INSTALLATION NOTES
This ventilator hood is to be used with light-duty and medium-duty
electrically powered cooking appliances only.
•DONOTattempttousethisventilatorhoodwithgas-redunits.
•DO NOT use this ventilator hood with electrical appliances whose
dimensionsorwattagecharacteristicsexceedthosedenedinthe
Under Hood Cooking Appliance Limitations, pages above.
Installation and demonstration must be performed by an Authorized
Installation Company.
Ansul® Installer must complete the WARRANTY INITIATION form
(2M-303912) included with the unit for the warranty to begin, and record
installation particulars on the CUSTOMER SERVICE DATA form
located at the end of this manual.
IT IS THE RESPONSIBILITY OF THE INSTALLER TO verify that this
VENTILATORinstallationisincompliancewiththespecicationslisted
in this manual, with local code requirements, and in accordance with
N.F.P.A 96 the STANDARD FOR VENTILATON CONTROL AND FIRE
PROTECTION OF COMMERCIAL COOKING OPERATIONS.
NOTE: Certain codes require FRYERS to be restrained with a
TETHER or other RESTRAINT DEVICE. If this ventilator is to be used
with a fryer, it is the RESPONSIBILITY OF THE INSTALLER to check
with the AUTHORITY HAVING JURISDICTION, in order to ascertain
theapplicabilityofthisrequirementtothisspecicinstallation .
SETUP
Setuptheapplianceonlyonarm,level,non-combustiblesurface.
Verify local codes for requirements. Concrete, tile, terrazzo or metal
surfaces are recommended. Metal over combustible material may not
meet code for non-combustible surfaces.
Verify vertical clearances. Ceiling height shall be no less than 108”
inches when utilizing horizontal discharge option. Ceiling height shall
be no less than 120” inches when utilizing vertical discharge option.
VerifythattheunitsitsrmlyonALLLEGS.Withaspiritlevel,check
that the appliance is level front-to-back and side-to-side. With the
adjustable legs, adjust as required to level the appliance. In order to
preventtippingordeection,legsmustbeadjustedsuchthatalllegs
areinrmcontactwiththeoor.
DANGER:
SUFFOCATION HAZARD
Do not attempt to use this
ventilatorwithgas-redunits.
This ventilator will not remove
products of combustion.
Unvented exhaust gasses
can be deadly.
WARNING:
SHOCK HAZARD
All servicing requiring
access to non-insulated
electrical components must
be performed by a factory
authorized technician.
DO NOT open any access
panel which requires the use
of tools. Failure to follow this
warning can result in severe
electrical shock.
CAUTION:
RISK OF
DAMAGE
DO NOT connect or energize
this appliance until all
installation instructions are
read and followed. Property
damage or bodily injury could
result if these instructions are
not followed.
IMPORTANT:
If a remote pull station is to
be used, ventilator cannot be
movedwithoutrstdisabling
the remote pull station.
Contact your Ansul® agent
for details.
TOOLS REQUIRED
RATCHET
3/4” SOCKET
3/4” OPEN END WRENCH
7/16” DEEPWELL SOCKET
7/16” OPEN END WRENCH
CRESCENT WRENCH
2”X4”X(LENGTH OF HOOD OR
MORE) WOOD BRACE
PROCEDURE & PARTSPROCEDURE & PARTS
TOOLS REQUIRED
#2 PHILIPS SCREWDRIVER
FLAT HEAD SCREWDRIVER
FOOD GRADE NSF APPROVED
SILICONE

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
9
Installing the Wells Universal Ventless Hood systems to base mounted side walls, and
installing ceiling mounted side walls. Ceiling mounting instructions for Wells Universal
Ventless Hoods.
SUMMARYSUMMARY
Plan the installation area for the hood. The following diagram includes the required clearances for
the hood installation, this is regardless of the type of hood mount, stand or ceiling mount, and equipment
underneath that is to be used under the hood.
The ceiling height must be 108 in. (274.3 cm) for installation of a unit with front, horizontal discharge, or
120 in. (304.8 cm) for installation of a unit with vertical discharge on 6 [six] inch legs. This requirement
is for both base and ceiling mount installations.
Wall clearances specified per NFPA 96, clause 4.2 must be maintained between the hood and combustible,
limited-combustible, and noncombustible materials. For reference, these clearances are 18 in. (457mm) to
combustible material, 3 in. (76 mm) to limited-combustible material, and 0 in. (0mm) to noncombustible
material.
Allow 24” of access on the service side (left side) of the hood. Check your local juristictional codes for any
additional restrictions or requirements.
Allow 6” of clearance on the right side of the hood for installation of the remote pull station.
!CRITICAL!
If the installation is a ceiling mount, the ceiling structure must be able to support the weight of the hood.
The structural integrity of the ceiling, and the ceiling modifications that are required must be determined by
a structural engineer. This is the responsibility of the installation contractor.
Table: Hood weights.
Model(S) Weight (lb. / kg)
WVU-48 and GK-48 798 lb. (362 kg.)
There are floor mounted bases available and these can be ordered as a separate kit.
The installation will require lifting equipment to raise the hood to the installed height, regardless of base or
ceiling mount.
SK2962

10
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
1.1 INSTALLING AND ASSEMBLING BASE MOUNTED HOOD
A base mounted hood will need to have the base assembled in place prior to raising the
hood and installing it on to the base.
1. Uncrate the hood and all components.
2. Assemble the base in the location that the hood will be located.
3. Locate the required hardware to assemble the base. The hardware required includes
1/4-20 UNC x .75 long Hex Head Cap Screws (bolt), 1/4 Flat Washers, and 1/4-20 UNC
Hex Nuts.
4. Use a flat, smooth, and clean floor surface, with all debris or obsturctions removed
to avoid damage. Align the two rear panels and secure to each other with one bolt, flat
washer, and nut at each hole location (8 places).
SK2963
1/4-20 UNC HEX NUT
(8 PLACES)
REAR PANEL - 2 REQUIRED
(N
OTE. NUMBER 4 FOR BOTH
PANELS ARE ALIGNED).
1/4-20 UNC X .750 HEX HEAD CAP SCREW
WITH FLAT WASHER UNDER HEAD
(8 PLACES)
SK2964

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
11
5. Place the base bottom stiener on the bottom and secure with one bolt, flat washer,
and hex nut at each hole location (8 places). Attach the corner stieners on each end and
secure with one bolt, flat washer, and hex nut at each hole location (4 places).
6. Attach the left-side and right-side panels to the rear base panels. Secure with the
bolt, flat washer, and nut at each hole location. 8 on each side plus 4 located at the corner
stieners.
ASSEMBLY FROM
PREVIOUS STEP(S)
.
NUMBERS ON THIS
SIDE.
1/4 X 20 UNC HEX NUT
(12 PLACES)
1/4 FLAT WASHER
(12 PLACES)
1/4-20 X .750 HEX HEAD CAPSCREW
(12 PLACES)
BASE STIFFENER
PLATE
CORNER STIFFENER
(NOTICE POSITION OF
FLANGE)
CORNER STIFFENER
(NOTICE POSITION OF
FLANGE)
IL3121
RIGHT BASE SUPPORT
ASSEMBLY (LETTER "R")
LEFT BASE SUPPORT
ASSEMBLY (LETTER "L")
ASSEMBLY FROM
PREVIOUS STEP(S).
NUMBERS ON THIS
SIDE.
1/4 FLAT WASHER
(20 PLACES)
1/4-20 X .750 HEX HEAD CAPS
CREW
(20 PLACES)
1/4 X 20 UNC HEX NUT
(20 PLACES)
IL3122

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M522 p/n 2M-Z23068 OpM WVU- Universal Hood
7. Attach the legs to the bottom of the base assembly. Use a level, adjust the legs until
the walls are level both front to back, and side to side. Check level again after installing the
hood.
8. The hood is now ready to be placed on the top of the base. Place the base at the final
location desired, and in accordance with all clearance requirements. Apply a bead of silicon
along the top of the panels.
LEGS (4 PL.)
ASSEMBLY FROM
PREVIOUS STEP(S).
APPLY BEAD OF SILICON
ALONG TOP SURFACE
OF PANELS.

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
13
CAUTION
• The next step places the hood on to the base assembly. The hood needs to be supported
by a supporting device that is acceptable to raise the hood into position.
9. Install the hood directly downward on to the base assembly, ensure the silicon makes an
airtight seal. Secure with the bolt, flat washer, and nut at each hole location.
The unit is now complete and ready for electrical installation, fire extinguishing system
assembly, equipment installation, and final assembly.
ASSEMBLY FROM
PREVIOUS STEP
HOOD. NOTE, THE
SIDE PANELS ARE
N
OT INSTALLED. THESE WILL
BE INSTALLED LATER.
1/4 FLAT WASHER
(22 PLACES)
1/4 X 20 UNC HEX NUT
(22 PLACES)
1/4-20 X .750 HEX HEAD CAPSCREW
(22 PLACES)
INSIDE BASE DEFLECTORS
CAN BE INSTALLED AT
ANY TIME. SEE SECTION ON
INSTALLATION.
INSTALL SIDE PANELS
AT END OF INSTALLATION
.
BOTH SIDES.

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M522 p/n 2M-Z23068 OpM WVU- Universal Hood
1.2 ASSEMBLING THE CEILING MOUNTED HOOD FOR INSTALLATION TO THE CEILING.
The skirt for the hood will be assembled first and then attached to the hood. Then, the
entire assembly will be mounted to the ceiling.
When the installation is a ceiling mount, the ceiling structure must be able to support
the weight of the hood. The structural integrity of the ceiling, and the ceiling
modifications that are required must be determined by a structural engineer. This is
the responsibility of the installation contractor.
Table: Hood weights.
Model(S) Weight (lb. / kg)
WVU-48 and GK-48 798 lb. (362 kg.)
There are floor mounted bases available and these can be ordered as a separate kit.
The installation will require lifting equipment to raise the hood to the installed height,
regardless of base or ceiling mount.
A ceiling mounted hood will have the skirt assembled in place prior to raising the hood for
installation on the skirt. The entire assembly will be mounted to the ceiling.
1. Uncrate the hood and all components.
2. Assemble the base in the location that the hood will be located.
3. Locate the required hardware to assemble the skirt. The hardware required includes
1/4-20 UNC x .75 long Hex Head Cap Screws (bolt), 1/4 Flat Washers, and 1/4-20 UNC Hex
Nuts.
SK2963

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
15
4. Use a flat, smooth, and clean floor surface, with all debris or obsturctions removed to
avoid damage. Align the two rear panels and secure to each other with one bolt, flat washer,
and nut at each hole location (8 places).
5. Place the base bottom stiener on the bottom and secure with one bolt, flat washer,
and hex nut at each hole location (8 places). Attach the corner stieners on each end and
secure with one bolt, flat washer, and hex nut at each hole location (4 places).
6. Attach the left-side and right-side panels to the rear base panels. Secure with the
bolt, flat washer, and nut at each hole location. 4 on each side plus 4 located at the corner
stieners.

16
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
7. The ceiling mount skirt does not have legs. The base has rear flanges that will not
allow it to sit level. Use wood to assist in keeping the flanges/skirts raised, and keep the
assembly level for the remainder of the installation.
8. The ceiling mount hood is now ready to be placed on the top of the skirt. Place the
skirt at the final location desired, and in accordance with all clearance requirements. Apply a
bead of silicon along the top of the panels.
CAUTION
9. Final installation is to be determined by contractor and structural engineer. The
ceiling structure and mounting must be structurally capable to support the hoods weight and
mounting system.
Use ½” diameter threaded rods to hang ceiling mounted hoods. The holes in the
ceiling and structure shall be 9/16” diameter. The following figure is the hole locations to
hang a WVU-48 hood.

M522 p/n 2M-Z23068 OpM WVU- Universal Hood
17
The next step places the hood on to the base assembly. The hood needs to be supported by
a supporting device that is acceptable to raise the hood into position.
9. Install the hood on to the base assembly.
The unit is now complete and ready for ceiling installation, electrical installation, fire
extinguishing system assembly, equipment installation, and final assembly.

18
M522 p/n 2M-Z23068 OpM WVU- Universal Hood
1.3 CEILING MOUNT DETAIL
Plan out the mounting of the ceiling mount hood. All roof structure requirements and
modifications must be able to hold the ceiling hood weight and the mounting structure. This
is the responsibility of the contractor and structural engineer to insure these requirements.
The mounting is made with 1/2” threaded rods. Drill 9/16” diameter holes in the ceiling and
supporting structure to line up with the threaded holes in the top of the hood. The following
diagrams are the hole patterns to insure wall clearances and to place the hood in the correct
position. Diagram 1: Ceiling hole pattern, WVU-48 and GK-48