Wells WVU-96 Operators Manual

WELLS MANUFACTURING

265 Hobson Street, Smithville, TN 37166

telephone: [phone]

fax: [phone]

www.wells-mfg.com

OWNER'S MANUAL

VENTLESS UNIVERSAL

HOOD SYSTEM

for

ELECTRIC

COOKING

APPLIANCES

522

MODEL

WVU48
WVU96

Manual Includes

INSTALLATION

USE & CARE

EXPLODED VIEW

PARTS LIST

WIRING DIAGRAM

IL2372

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.

2M-Z16247 Rev. H

04/2018

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 Wells­authorized 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 .

CO NTAC T

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 the 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

Telephone [phone]

Fax [phone]

Email [e-mail]

www.wells-mfg.com

WARRA

THE FOLLOWING WILL NOT BE COVERED UNDER WARRANTY.

• Any product which has not been installed, cleaned, maintained,
or used 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 or electrical connection. Wells 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 operating
restrictions that hinder a service technician’s ability to perform service.

• Parts that fail or are damaged due to normal wear or labor for

replacement of Items that can easily be replaced during a daily cleaning
routine. such as but not limited to silicone belts, PTFE non-stick sheets,
knobs, control labels, bulbs, fuses, quartz heating elements, 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

Specialty/chain specific versions may also have additional and/or
extended warranties.

NTY EXCLUSIONS

PRODUCTS PARTS LABOR

universal ventless hoods 2 years 1 year

canopy hoods 2 years 1 year

“Cook’n Hold” equipment [HW10,

HWSMP, LLSC7, LLSC7WA, LLSC11,

2 years 1 year

an d LLSC 1 1WA]

cast iron grates, burners, and burner

shields

original Wells parts sold to repair

Wells equipment

1 year

90 days

Service First 1 year

The fore going warrant y is in lieu of any and a ll other warranti es expresse d or implied and c onstitutes the e ntire warranty. 2M-Z22393 • Rev A • 02.2018

TABLE OF CONTENTS

GENERAL WARRANTY STATEMENT

ELECTRICAL SPECIFICATIONS

FEATURES & OPERATING CONTROLS

PRECAUTIONS & GENERAL INFORMATION

AGENCY LISTING INFORMATION

INSTALLATION

Unpacking & Inspection

Components

Under-Hood Appliance Limitations

Service Technician Installation Notes

Base Assembly

Electrical Installation

ANSUL® INSTALLATION & SETUP

Filter Installation

OPERATION

Operation Lights

CLEANING INSTRUCTIONS

DISCHARGE DIRECTION CHANGE

REQUIRED MAINTENANCE & MAINTENANCE LOGS

TROUBLESHOOTING SUGGESTIONS

WIRING DIAGRAM

EXPLODED VIEW & PARTS LIST

PARTS & SERVICE

CUSTOMER SERVICE DATA

1

2-3

4

5

5

5

5

6-7

8

9-10

11-12

13-14

15

16

16

17-18

19

20-24

25

26-27

28-37

38

38

INTRODUCTION

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.

ELECTRICAL SPECIFICATIONS

Model Volts Amps Power Supply

WVU48

WVU96 8.0

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

208/240V

3.5

For supply connection use #12 AWG copper wire only.

1

FEATURES & OPERATING CONTROLS

20

1

43 5 6

24

15

17

16

19

18

21

22

23

14

13

12 11

2

VENTILATOR CONTROL PANEL

see page 15

7

8

9

10

Ventilator Section Operating Features & Controls

2

IL2391a

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

FEATURES & OPERATING CONTROLS continued

FEATURES & OPERATION CONTROLS

ITEM NO DESCRIPTION COMMENT

1 VENTILATOR EXHAUST DUCT, TOP Exit point for ventilator airow - on top of unit. DO NOT BLOCK

2 VENTILATOR EXHAUST DUCT, FRONT Exit point for ventilator airow - on front of unit. DO NOT BLOCK

3 VENTILATOR FAN Provides air movement for ventilation

4 HI-EFFICIENCY/CHARCOAL FILTER PACK Removes grease and smoke particles. Also assists in cooking odor removal.

5 NAMEPLATE

6 FIRE SUPPRESSION TANK Container for ANSUL® Low-pH Liquid re suppression uid.

7 ACTUATOR ASSY

8 ANSUL® CARTRIDGE Propels suppression liquid through suppression manifold and nozzles.

9 MANUAL PULL STATION

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

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

18 ELECTRICAL CONNECTION BOX Houses electrical components

19 GROUND LUG Ground wire of power connection connects here.

20 EQUIPMENT INTERFACE CONTACTOR

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

Gives manufacturer, make and model description. Also list voltage and
amperage data.

Triggers deployment of suppression uid through manual pull station or
electric detection.

Provides a means of manual activation of the re suppression system. PULL
ONLY IN CASE OF FIRE!

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

Comprises the PRE-FILTER FRAME and a replaceable PRE-FILTER.
Stops large particles of grease from reaching the FILTER PACK for reduced
maintenance costs.

Energizes cooking appliances only while ventilator section is sensed as
operational.

Proper installation of bafe lter and lter pack closes these switches in
ventilator sensor circuit

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

3

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

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.

in the preparation 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
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 sizes on all hardware.

Warranty for this unit is 2 years for parts and 1 year for labor with

proper installation/start-up and maintenance.

for commercial establishments for use

200 cfm per linear foot of hood

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

4

AGENCY LISTING INFORMATION

SANITATION

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

NSF/ANSI 2

UL710B

Recurculating System

INSTALLATION

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 8 ft

Pre-Filter 2 ea. 4 ea.
Bafe Filter 2 ea. 4 ea.
Filter pack 1 ea. 2 ea.
Grease cup 1 ea. 2 ea.

Ansul® components - must be installed by an authorized Ansul®

distributor only:

4 ft 8 ft

2 ea. 4 ea. Fire suppression agent tank
2 ea. 4 ea. Fire suppression agent (Ansulex® Low pH) 1.5 gal.

1 ea. 2 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.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

6. Replace front discharge vent panel.

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.

5

INSTALLATION (continued)

UNDER-HOOD APPLIANCE LIMITATIONS:

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

6

INSTALLATION (continued)

UNDER-HOOD APPLIANCE LIMITATIONS:

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

7

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, page 6.

Installation and start up 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 103”
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.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

8

INSTALLATION (continued)

Hardware Provided

Nut; 2C-6517

Washer; 2C-A27469

Bolt; 2C-Z5555

BASE ASSEMBLY

Prior to assembling the base, locate it as close to the

nial position as possible. Then follow these steps.

1. Align the two rear panels (Fig 1) and secure with a
bolt, washer and nut (8 places).

2. Place the Base Bottom Stiffener (N1-Z15330) to the

bottom of the two rear panels and secure with bolt,
washer and nut (8 places).

3. Align the left and right side of the base to the rear
panel (Fig 2) and secure with bolt, washer and nut
(8 places each side).

4. Align the rear corner brackets in place (Fig 3) and

secure with bolt, washer and nut

(4 places each bracket).

5. Install the 6” adjustable legs and secure in place with

the bolt provided.

IL2977

Front

Front

IL2387

Bottom Stiffener

Figure 1

IL2388

p/n: N1-Z14159

9

Figure 2

Corner Bracket

6” Adj. Legs

Figure 3

p/n: N1-Z14158

IL2389

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

INSTALLATION (continued)

Base Deflectors

Figure 4

High Temp 350°F

RTV Sealant

6. Align the two base deectors (Fig 4) in place and
secure with screws (8 per deector)

7. Move the base into position, and using a level,
adjust the legs until level.

8. Remove the side panels of the hood assembly so
when lowered onto the base assembly it will be
easier to secure in place.

9. Apply a bead of RTV Sealant with a temperature

rating of 375°F on the base (between the base
and hood, once hood is lowered) as shown in

(Fig 5). Follow the warning that come with the

sealant. DO NOT allow a lm to form on the
bead before lowering the hood down on the

base. If a lm forms, remove the bead and re-

apply a new bead.

IMPORTANT: BEFORE APPLYING RTV
SEALANT, CLEAN ALL RECIEVING
SURFACES OF ANY DIRT, GREASE OR
FORGIEN MATERIAL.

10. Using the upper supporting brackets on the hood,
lower the hood on top of the base (Fig 5) so the

mounting holes line up. Secure with bolt, washer
and nut (7 places each side).

11. Contact your electrical & Ansul® contractors
to provide service to the system. Refer to
the ELECTRICAL INSTALLATION &

SUPPRESSION SYSTEM INSTALLATION
sections in this manual.

12. Once complete the side panels can be installed

IL2390b

using hardware provided.

FIRE

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

Figure 5

10

INSTALLATION

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

Electrical connections must
be made by a licensed
electrician.

CAUTION:

FIRE HAZARD
HEALTH HAZARD

All cooking appliance must
be connected to the cooking

appliance contactor, the
control circuit of which is
controlled by the ventilator.

Failure to control cooking

appliances will provide no
protection in the event of a

re, nor will cooking vapors

and odors be contained in
the event of ventilator hood

ELECTRICAL INSTALLATION

Refer to the nameplate on the ventilator. Verify ELECTRICAL
SERVICE POWER. Voltage and phase must match the nameplate

specications, and available electrical service amperage must meet or
exceed the listed amperage. Refer to specications listed on page 1 of

this manual.

The ground lug of this ventilator must be connected to a suitable
building ground.

Remove the left side panel to access the cooking appliance contactor
and building alarm relay. Remove the appropriate knockout, then wire
the cooking appliance control circuit to the terminal block per Fig below.

NOTE: It is the responsibility of the electrical contractor to provide

suitable wiring, exible or rigid conduit, and an appropriate strain relief.

Electrical Connection

NOTE: The hood requres a single phase (1ph), 208 or 240 volt, 20

amp suppy. When connecting line voltage to the unit’s terminal block,
use a minimum of #12 gage copper wire only, suitable for 167°F (76°C)

ambient temperature.

Appliance Connections

All under hood appliances are required to be interlocked with the hood’s

equipment cut-off circuit, through a customer supplied contactor. This

contactor must be a UL listed, denite purpose AC resistive air heating type,

suitable for the appliance load. Installation and connections shall be in
accordance with the National Electric Code NFPA 70. These connections
provide an automatic shutdown of the appliance when the hood is OFF, or in

the event of a malfunction or appliance re.

Equipment Cutoff Connections

Opt 1: Use TB#3 & TB#4 for 208 or 240 volt control circuit. These contacts will be

de-energized when the hood is OFF or in the event of a malfunction

Opt 2: Use TB#5 & TB#6 as a Normally Closed SPST relay connection for equipment

control circuits with voltages other than 208 or 240 AC. These contacts will be

open when hood is OFF or in the event of a malfunction.

CUSTOMER
SUPPLIED
CONTACTOR(S)

TB1

TB2

L1 L2

LINE INPUT
208-240VAC

50/60HZ

TO APPLIANCE

OVER CURRENT

PROTECTED

SUPPLY

EQUIPMENT INTERFACE OPTION 1

TO CUSTOMER

SUPPLIED APPLIANCE

CONTACTOR

(240V CNTR CIRCUIT)

OPTION 1

208/240V

TB3

APPLIANCE
CONTROL

TB4

EQUIPMENT
CUTOFF
TERMINALS

TB3

TB4

TB5

TO CUSTOMER

SUPPLIED

SWITCHING

DEVICE (SPST)

OPTION 2

CUSTOMER
SUPPLIED
CONTACTOR(S)

11

TB6

TB7

TB8

BUILDING

ALARM

INTERFACE

TO APPLIANCE

OVER CURRENT

PROTECTED

SUPPLY

EQUIPMENT INTERFACE OPTION 2

SOURCE CIRCUIT

T3

TB5

TB6

L3

CUSTOMER

SUPPLIED

SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS

IL2376a

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

INSTALLATION continued

SUPPLY POWER INSTALLATION

FIRE

ALARM

SYSTEM

SUPPLY
POWER

TO HOOD

APPLIANCE(S)

POWER

SUPPLY

HOOD

INTERFACE

CONTACTOR(S)

POWER

TO

APPLIANCE(S)

IL2392

DANGER:

SHOCK HAZARD

Turn power off to the unit
before removing the side
electrical box cover.

CAUTION:

SHOCK HAZARD

The ground lug of this
appliance must be connected
to a suitable building ground.

IMPORTANT:

Contact a licensed electrician
to install and connect electrical
power to the appliance.

IMPORTANT:

Damage due to being
connected to the wrong
voltage or phase is NOT
covered by warranty.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

12

INSTALLATION continued

DANGER

FIRE HAZARD

Fire suppression system

must be charged and certied

by an authorized Ansul®
distributor.

DO NOT attempt to modify or

bypass the re suppression

system.

An uncontrolled re can

cause serious injury or death.

NOTE:

If the re suppression system

is discharged, a buzzer will
sound continuously. The unit
will remain inoperable until

the re suppression system is

serviced, recharged and reset
by an authorized Ansul®
distributor.

Charging of the Ansul®
Fire Suppression system
must be in accordance with
Ansul® Design, Installation,
Recharge and Maintenance
Manual, #418087.

NOTE:

If a REMOTE MANUAL PULL
STATION is installed, moving
the ventilator for any reason
may cause the Ansul®
system to discharge.

IMPORTANT:

Should the re suppression

system discharge: all nozzles
must be replaced, and all
lines thoroughly cleaned,
prior to recharging the
system.

Residual re suppression

media may compromise the

ow and dispersion of re

suppression media in any
subsequent activation.

The alarm relay is activated by the Ansul® re detection system. If the

installation includes a building alarm system, connect to terminals T7 &

T8 of the terminal block in supply connection box. These terminals are
congured from the factory for normally open operation.

The ventilator will operate properly, and the appliance control relay will
be energized, only when:

1. The VENTILATOR POWER SWITCH is “ON”.

2. The Ansul® Fire Suppression System is charged and armed.

3. All lters are in position and serviceable, and the ventilator air ow
system is satised.

FIRE SUPPRESSION SYSTEM INSTALLATION

EACH 4’ FOOT SECTION OF THE FIRE SUPPRESSION SYSTEM

is comprised of two containers of Ansulex® Low pH liquid re

suppression media and a system pressurization canister, plus
associated plumbing. Actuation controls are contained in the Automan
enclosure.

The hood is supplied with a eld installed MANUAL PULL STATION,

which must be set-up at the time of installation by an authorized Ansul®
distributor.

The MANUAL PULL STATION allows for for manual emergency

shutdown of cooking appliance power, and actuation of the re

suppression system.

Six (WVU48) or twelve (WVU96) NOZZLES disperse the re
suppression media.
The appliance nozzles are swivel mounted, and must be directed

toward the cooking surface of the installed cooking appliance.

If the ventilator is situated such that the supplied manual pull
station cannot be installed or is not readily accessible, a REMOTE
MANUAL PULL STATION may be required by local codes. Any
such remote manual pull station must be installed by an authorized
Ansul® distributor in accordance with the AUTHORITY HAVING
JURISDICTION.

The re detection system utilizes six (WVU48) or twelve (WVU96)
electronic thermal detectors with an actuation set point of 225°F

(107°C) in the upper hood locations and 275°F (135°C) detectors in the
lower wall locations. The signaling from any of these detection devices

will automatically discharge the re suppression media through all
nozzles, disable the cooking appliances and cause the alarm to sound.

Fire suppression media will form an emulsion designed to both smother

and cool the fuels in/on the cooking appliance.

Two inner nozzles protect the fan and plenum.

13

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

INSTALLATION

FIRE SUPPRESSION SYSTEM INSTALLATION (continued)

The MANUAL PULL STATION and any similar REMOTE MANUAL

PULL STATION will activate the re suppression system when the

ring on the pull station is pulled to its full extent.

DANGER

BURN HAZARD

Any additional remote pull
station must NOT be installed

on the front of the cooking

appliances,

Discharge of the re

extinguishing system into hot
grease or oil may cause hot
foam to spill over from the

cooking surface or frypot.

Serious burns and other injuries
can result from contact with hot
oil and from slipping in spilled
oil.

The manual pull station is
installed on the right side
(facing the unit. It may,
however, be relocated to the left
side of the ventilator hood by an
authorized Ansul® agent.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

14

INSTALLATION

NOTE:

The BAFFLE FILTERS,
PRE-FILTERS and FILTER
PACK actuate position
switches when they are
properly positioned. They
must be properly installed

for the under hood cooking

appliance contactor to be
energized.

WARNING

SLIP AND FALL
HAZARD

DO NOT operate any

grease-producing cooking

appliance

(e.g. fryer or griddle) unless
the grease cup is properly
installed. Oil will drip onto

oor creating a slipping

hazard.

FILTER INSTALLATION

Note air ow direction arrow on lter pack. Remove old lter pack
and slide new lter pack fully into the appropriate slot. Verify that
the airow arrow points toward the fan.

25.9 Min

Clearance

PREFILTER HOUSING MUST

HOOK IN FLANGE AT TOP.

CHECK TO MAKE SURE YOU

CANNOT PUSH IT BACK

AFTER INSTALLATION

BAFFLE FILTER

PART NO. 2I-Z14670

PREFILTER
PART NO. 2I-302579

SMOKE & ODOR

FILTER PACK

PART NO. WL0171

SIDE VIEW

AIRFLOW

AIRFLOW

IL2377b

CAUTION

BURN HAZARD

DO NOT operate any cooking

appliance unless the grease
cup is installed.

Moisture dripping onto hot
surfaces, oil or grease can
cause splattering.

Bafe lters are reusable and should be cleaned at least weekly.
Change pre-lters and smoke/odor lter pack as indicated on the front
panel. These lters are disposable and cannot be reused. The smoke
/ odor lter pack is accessed thru the front service door.

Pre-lters are located behind the bafe lters, when installing pre-lters
engage top retaining ange prior to seating pre-lter housing in lower

chamber.

Use only genuine Wells replacement parts and lters,
call [phone] or your authorized Wells service agent. Parts
supplied by others will void your warranty and may not provide safe
operation.

BAFFLE FILTER and GREASE CUP INSTALLATION

1. Install bafe lter from front. Engage the bafe lter in the retainer
slot. Push up until the bafe lter bottom clears the lower lip of the
retainer, then lower the bafe lter into the bottom retainer

2. Install GREASE CUP into brackets below the bafe lter.

Note: Failure to install the GREASE CUP will allow grease and

moisture from the BAFFLE FILTER to drop into hot cooking surfaces,

creating both a SAFETY HAZARD (hot oil splatter) and a HEALTH

HAZARD (contamination of the cooking surface or cooking oil).

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

15

OPERATION

Control Panel

ON

POWER

OFF

CHECK

REPLACE

REPLACE

FILTERS

PREFILTERS

FILTER PACK

AIR CURTAIN

SERVICE REQUIRED

NOTE: Cooking appliances must be operated in accordance with the

manufacturer’s instructions.

During normal operation, the illuminated power switch will be the only
light on the control panel that will be ON.

If the CHECK FILTERS light illuminates, check BAFFLE FILTERS,

PREFILTERS, and the HEPA AIR FILTERS for proper installation.

If the REPLACE PRE-FILTERS light illuminates .. Replace the Pre-lters.

If the REPLACE FILTER light illuminates, replace the FILTER PACK.

NOTE: the REPLACE FILTERS light is a warning that lter pack is

nearing the end of its service life. The ventilator will continue to operate
for a period of time after the REPLACE FILTER LIGHT turns ON to allow

continued operation through a peak period. However, lter pack must be

replaced within a short time period or it will clog, disabling the ventilator
and appliances.

If the SERVICE REQUIRED light illuminates, the lter pack is restricted
to the point of insufcient airow for proper operation and the Ventilator
will shut down until the underlying clogged lter situation has been
corrected. Replace clogged item with a fresh lter to correct the

condition. Reset the unit by turning VENTILATOR POWER SWITCH to

OFF, then back to ON.

If the air curtain service required lights illuminate, there is insufcient
airow for proper operation. Call an authorized Wells Service Agent.

A failure of incoming electric power will cause a shut down of the unit.
Reset the unit by turning VENTILATOR POWER SWITCH to OFF, then

back to ON.

SERVICE

REQUIRED

IL2374

CAUTION:

HOT SURFACE

Exposed surfaces can be hot
to the touch and may cause
burns.

CAUTION:

SHOCK HAZARD

DO NOT splash or pour water
or grease onto control panel
or wiring.

IMPORTANT:

The ventilator cannot operate

if the lter pack is removed or

clogged.

It is the responsibility of
the store management to

maintain sufcient spares
of lter packs to avoid

prolonged shutdown of the

ventilator when this lter is

expended.

Filter packs cannot be

cleaned.

Wells Manufacturing assumes
no liability for loss of business

due to lter related shutdown.

Filters that are not genuine
Wells Replacement Parts
may cause your unit to
operate incorrectly and you

will risk the possibility of

voiding your warranty.

Operation Lights

There are three (WVU48) equipment lights and six on the (WVU96) that

provide illumination of the working area. These lights are controlled by

the main power switch.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

16

CLEANING INSTRUCTIONS

CAUTION:

HOT SURFACE

Exposed surfaces can be hot
to the touch and may cause
burns. Allow unit to cool
before cleaning.

CAUTION:

SHOCK HAZARD

DO NOT splash or pour water

or grease onto control panel
or wiring.

PRECAUTIONS: Disconnect unit from electric power and allow to cool

Cover frypot to prevent oil contamination

FREQUENCY: Daily

TOOLS: Mild detergent, clean non-abrasive towels

NOTE: Ventilator section to be cleaned in conjunction with cooking

appliance. Refer to appliance user instructions for cleaning procedure.

1. TURN HOOD POWER SWITCH TO OFF.

Cover cooking appliance to prevent oil contamination.

2. Remove BAFFLE FILTERS and GREASE CUP(s).

3. Empty GREASE CUP(s) into an appropriate grease collection
receptacle.

4. Clean BAFFLE FILTERS and GREASE CUP(s) in a sink or dishwasher

using mild detergent and warm water.

5. Dry components with a clean non-abrasive cloth. Reinstall BAFFLE

FILTERS and GREASE CUP(s) in ventilator.

6. Wipe exterior of ventilator with a clean cloth moistened with warm
water and mild detergent. Rinse by wiping with a clean cloth
moistened with warm water.

7. Uncover the cooking appliance and reconnect unit to electric power.

Procedure is complete

17

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

CLEANING INSTRUCTIONS

PRECAUTIONS: Disconnect unit from electric power and allow to cool

Cover cooking surfaces and frypots to prevent
contamination.

FREQUENCY: Monthly

TOOLS: Mild detergent, clean non-abrasive towels

NOTE: Ventilator section to be cleaned in conjunction with cooking

appliance. Refer to appliance user instructions for cleaning procedure.

1. TURN HOOD POWER SWITCH TO OFF.

Cover cooking applaince to prevent oil contamination.

2. Remove BAFFLE FILTERS, GREASE CUP(s), and all FILTER PACK(s).

3. Wipe interior of ventilator with a clean cloth moistened with warm water
and mild detergent. Rinse by wiping with a clean cloth moistened with
warm water. DO NOT clean by spraying.

4. Dry ventilator thoroughly with a clean non-abrasive cloth.
Reinstall all FILTERS, BAFFLE FILTERS, GREASE CUP(s).

5. Uncover the cooking appliance and reconnect unit to electric power.

Procedure is complete

CAUTION:

HOT SURFACE

Exposed surfaces can be hot
to the touch and may cause
burns. Allow unit to cool
before cleaning.

CAUTION:

SHOCK HAZARD

DO NOT splash or pour water
or grease onto control panel
or wiring.

IMPORTANT:

DO NOT wash FILTER

PACK. Washing these lters

will clog them, and cause

installed cooking appliance

to be disabled.

IMPORTANT:

DO NOT clean interior of
ventilator by spraying.

Spraying can contaminate the

cooking appliance, and may

cause internal damage to the
ventilator blower, operation

proong system and/or re

suppression system.

Clean by wiping only.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

18

MAINTENANCE: DISCHARGE DIRECTION CHANGE

IL3025

Procedure for changing the discharge on a WVU-48 / 96

PARTS LIST

Fig

Part No Description Qty

No

1 2C-35487 SCREW 8-32 X 5/16 PH TR HD AR

2 2C-6517 1/4-20 FLANGED HEX SHAKEPROOF LOCK NUT AR
3 2V-307913 DAMPER FIRE 8X9 1
4 N1-WL0167 ACCESS DOOR ASSY. ELEC COMPARTMENT 1
5 N1-WL0172 FRONT DUCTWORK ASSEMBLY 1
6 N1-WL0244 TOP DISCHARGE SCOOP ASSEMBLY 1
7 N1-Z14097 FRONT DISCHARGE VENT PANEL 1
8 N1-Z14100 DISCHARGE CURVE 1
9 N1-Z14139 BLOCK-OFF PLATE, TOP DISCHARGE 1

Horizontal to Vertical:

1. Remove the Front Access Door (Item 4) by turning
the slotted screws ¼ turn and lift out the panel.

2. Remove the Front Discharge Vent Panel (Item 7) by
removing the mounting screws.

3. Remove the damper (Item 3).

4. Re-install the Front Access Door and Front
Discharge Vent Panel.

5. Remove the Top Discharge Block-Off plate (item 9)

by removing the four mounting nuts.

6. Remove the Discharge Curve (Item 8) by removing
the two 8-32 screws (Item 1) securing the curve and

slide the curve out of the bracket.

7. Install the Vertical discharge assembly (Item 6) and
secure with four ¼-20 nuts.

8. Install the damper (Item 3) into the top of the Vertical
discharge assembly (Item 6).

Vertical to Horizontal:

1. Remove the damper (Item 3) from the vertical
discharge housing (Item 6).

2. Remove the four nuts that secure the Vertical
discharge housing (Item 6) to the top panel of the
hood.

3. Remove the vertical discharge housing.

4. Insert the discharge curve (Item 8) into the duct as

shown. Slide one end of the curve into the bracket

located on the rear wall of the duct and secure the

front end of the curve with two 8-32 x 5/16 screws

(Item 1).

5. Install the block-off plate (Item 9) and secure with

four ½-20 nuts.

6. Remove the Front discharge vent panel (Item 7) and
access door (Item 4).

7. Install the damper (Item 3) into the front ductwork
assembly (Item 5).

a. Note the required orientation of the damper as noted

on the damper.

8. Re-install the front discharge vent panel and access
door.

7

1

4

19

3

2

9

8

1

5

3

6

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

REQUIRED MAINTENANCE

IMPORTANT:

Per NFPS 96, a signed and
dated VENTILATOR HOOD
MAINTENANCE LOG
must be maintained on the
premises, and be made
available for inspection by the
authority having jurisdiction
upon request.

IMPORTANT:

Should the re suppression

system discharge, all
lines and nozzles must be
thoroughly cleaned prior to
recharging the system.

Be sure to note such cleaning
on the hood maintenance log.

Residual re suppression

media may compromise the

ow and dispersion of re

suppression media in any
subsequent activation.

USE AND MAINTENANCE SHALL BE IN ACCORDANCE WITH THE
STANDARD FOR VENTILATION CONTROL AND FIRE PROTECTION
OF COMMERIAL COOKING OPERATIONS, N.F.P.A. 96 (current
edition).

3-MONTH MAINTENANCE:

Thoroughly clean entire HOOD PLENUM and BLOWER section.

6-MONTH MAINTENANCE:

Inspection and testing of total operation including FIRE DAMPER and

all SAFETY INTERLOCKS shall be performed by qualied service

personnel.

All FIRE SUPPRESION SYSTEM actuation components including
MANUAL PULL STATION and any REMOTE MANUAL PULL STATION
must be inspected for proper operation in accordance with the
maintenance schedule published in
INSTALLATION, RECHARGE AND MAINTENANCE MANUAL (418087).

ANNUAL (12-MONTH) MAINTENANCE:

NOZZLES and MANUAL PULL STATION must be cleaned in
accordance with
RECHARGE AND MAINTENANCE MANUAL (418087).

ANSUL® R-102 SYSYTEM DESIGN, INSTALLATION,

ANSUL® R-102 SYSTEM DESIGN,

12-YEAR MAINTENANCE:

The FIRE SUPRESSION AGENT TANK must be HYDROSTATICALLY
TESTED, and the FIRE EXTINGUISHING AGENT must be REPLACED
in accordance with the maintenance schedule published in ANSUL®
R-102 SYSTEM (STANDARD UL 300 LISTED). This maintenance to be

performed by qualied Ansul® service personnel only.

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

20

WELLS BLOOMFIELD, LLC

VENTILATOR HOOD OWNERS MONTHLY INSPECTION LOG

IL2144

OPERATION AGENT DATE

Extinguishing system components:

In proper place and (visually in

good order

Manual pull station actuators for fire

Inspection shall be conducted on a monthly basis in accordance with

the manufacturer’s Operation Manual. At a minimum, this inspection

shall include verification of the following:

suppression system are obstructed

The maintenance log is in place

and up to date

No obvious physical damage or condition

exists that might prevent operation of the

The nozzle blow-off caps are in place

fire suppression system

and in good condition

21

The hood, duct and protection cooking

appliance have not been replaced,

modified or relocated

Clean plenum GREASE BAFFLE and

BLOWER (max. interval: 3 months)

Change PRE-FILTER and FILTER PACK

(as required)

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

WELLS BLOOMFIELD, LLC

VENTILATOR HOOD MAINTENANCE LOG

IL2378a

OPERATION AGENT / DATE

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

Clean and inspect discharge nozzle in plenum BEFORE filters

This MAINTENANCE LOG is to be performed and completed by a trained technician who has

completed the instruction necessary to perform the maintenance and recharge service.

MAX. interval: 6 months

Clean and inspect discharge nozzle in plenum AFTER filters

MAX. interval: 6 months

Log TEMP

Replace fire damper fusible link:

Inspect fire suppression detectors, all releasing devices for

actuation, fire suppressant tank liquid level

Max interval: 6 months

(discharge of fire suppressant not a part of this test)

Inspect fire suppression hoses, plumbing and tank for

obstructions and any condition such as, but not limited to,

corrosion and pitting.

Max interval: 6 months

Inspect and test all filter interlocks

Max. interval: 6 months

rated @ 212ºF

Log mfg DATE

Stamp

Max interval: 12 months

22

THIS MAINTENANCE LOG MUST BE KEPT IN A PROTECTIVE COVER PERMANENTLY ATTACHED TO THE APPLIANCE

Log all repairs and recommendations on reverse side. Any repairs, other than replacement of factory authorized parts, to the fire suppression plumbing system must be

subject to hydrostatic pressure testing.

ANSUL

ANSUL INCORPORATED

MATERIAL SAFETY DATA SHEET

M AR INE TTE , WI 5 4143-2 542

®

Manufacturer’s

Name:

Address:

Prepared By:

ANSUL INCORPORATED

One Sta nto n Stre et, M arine tte, W I 54 143-2542

Safety and Health Departm ent

SECTION 1 - IDENTITY

Comm on Nam e (Used on Label):
(Trade Name and Synonyms)

Chemical

Name:

Formula:

N/A This is a M ixture

N/A

ANSULEX Low pH Liquid Fire Suppressant

SECTION 2 - INGREDIENTS

PART A - HAZARDOUS INGREDIENTS

Principal Hazardous Component(s) (chemical and common nam e(s)):

None

ANSULEX Low pH

QU ICK ID EN TIFIER (In P lant C omm on N ame)

Em ergency

Telephone No.:

Other Information

Ca lls:

Date Prepared:

CA S No .:

W t.%

Chemical

Fa mily :

CAS No.

CHEMTREC

[phone] or [phone]

[phone]

February 1, 1999

N/A

M ixture

ACGIH TLV

Acu te Toxicity D ata

N/A N/A N/A N/A

PART B - OTHER INGREDIENTS

Other Component(s) (chemical and comm on name(s)):

Proprietary Mixture of Organic and Inorganic Salts

Phosphoric Acid 0.2

ED TA

Yellow-Green Fluorescent Dye 0.011

Water

W t.%

48 .0 - 5 0.0

0.6 5

Approx. 50.0

CAS No.

N/A

7664-38-2

64--0 2-8

518-47-8

7732-18-5

ACGIH TLV

N/E

N/E

N/E

N/E

N/E

SECTION 3 - PHYSICAL AND CHEMICAL CHARACTERISTICS (Fire and Explosion Data)

Bo iling

Point:

Percent Volatile

by Volume (%):

Solubility

in Water:

Appearance
and Odor:

Flash Point:

Special Fire

Fighting Procedures:

Unusual Fire and
Explosion Hazards:

113 ºC

Approx. 50.0

Vapor Density:

(Air = 1 ):

1.0 3

100%

Fluorescent Yellow Colored Liquid, Mild O dor

None to boiling

Flammable Limits
in Air % by Volume:

N/A

NONE - THIS IS AN EXTINGUISHING AGENT

None

Specific

Gra vity (H O= 1):

2

Evaporation Rate:

(Butyl Acetate=1):

Rea ctivity in
Wa ter:

Extinguisher

Media:

1.3 3

Approx. 0.005

Mild exothermic reaction

N/A N/A

Vapor Pressure
(mm Hg ):

Auto-Ignition
Temperature:

SECTION 4 - PHYSICAL HAZARDS

Stability:

Incompatibility
(Materials to Avoid):

Hazardous
Decomposition Products:

Hazardous
Polymerization:

W ill N ot O ccur

Unstable

Stable

Reactive M etals, ClF , electrically energized equipment, any m aterial reactive with water.

Not established, acrid fumes.

May Occur

Conditions
to Avoid:

Conditions
to Avoid:

N/A

3

N/A

Acu te Toxicity D ata

NDA

NDA

NDA

Oral LD (rat)

6800 mg/kg

NDA

Not Determined

50

23

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

SECTION 5 - HEALTH HAZARDS

ANSULEX Low pH (continued)

Threshold

503 p/n 2M-304989 Owners Manual WVF-886 Ventless Fryer

Limit Value:

Ro utes of Entry:

Eye Contact:

Skin Contact:

Inhalation:

Ingestion:

Signs and

Sym ptoms:

Medical Conditions Generally

Aggravated by Exposure:

Chemical Listed as

Carcinogen or Potential:

SECTION 6 - EMERGENCY AND FIRST AID PROCEDURES

Eye Contact:

Skin Contact:

Inhalation:

Ingestion:

SECTION 7 - SPECIAL PROTECTION INFORMATION

Respiratory Protection

(Specify Type):

Ventilation:

Pro tective

Othe r Prote ctive

Clothing or Equipment:

Gloves:

None Established

Irritant

Irritant

No t an expe cted ro ute o f entry. Ca n be irritating to m ucous mem bran es.

Irritating to mucous mem branes. Acute Oral LD (Sprague-Dawley rats) 825.5mg/kg.

Acute Exposure: Material irritates skin, eyes, and mucous membranes.

Chronic Exposure: None known.

50

None known.

National Toxicology
Program:

Flush and irrigate with water for 15 minutes while holding eyelids open.

If irritation persists, seek m edical attention.

Yes

No

I.A.R .C
Monographs:

Yes

No

OSHA

Yes

No

Wash thoroughly with soap and water. If irritation persists, seek medical attention.

Fresh air if symptoms occur. If irritation persists, seek medical attention.

Dilute by drinking large quantitie s of water.

N/A

Local

Exhaust:

N/A N/A

Rubber gloves for spill/leak

Mechanical
(General):

Eye
Protection:

Chemical goggles recomm ended during

spill/leak procedures.

Eye wash and safety showers are good safety practice.

SECTION 8 - SPECIAL PRECAUTIONS AND SPILL/LEAK PROCEDURES

Precautions to be taken

in Handling and Storage:

Other

Precautions:

Steps to be taken in C ase

Material is Released or Spilled:

Waste Disposal

Methods:

Store in original container. Keep tightly closed. Ke ep separate from acid.

See incompatibility information in S ection 4.

Stop leaks. Contain spills. Remove as much as possible. Place in closed container for proper disposal

Wash spill area with large amounts of water to remove traces and neutralize.

Dispose of in compliance with local, state and federal regulations.

HAZARDOUS MATERIAL IDENTIFICATION SYSTEM

HAZARD I NDEX

4 SEVERE HAZARD 0 HEALTH
3 SERIOUS HAZARD

2 MOD ERAT E H AZAR D 0 FLA MM ABILIT Y

1 SLIGHT HAZ ARD

0 MINIM AL H AZA RD 0 R EAC TIVITY

N/A = Not App lica ble N D A = N o Data Av ailable N/E = No t Established

ANSUL and ANSULEX are registered trademarks.

Intern et Add ress: http://ww w.ansu l.com

AN SUL IN CO RPO RATED , ON E S TANTO N S TREE T, MA RINET TE, WI 54 143-2 542 Form No. F-9016 0-6 ©199 9 Ansu l Incorp orated

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

24

TROUBLESHOOTING SUGGESTIONS

Problem Possible Cause Suggested Remedy

Unit will not operate (no

indicators lights lit)

Unit will not operate

(buzzer sounds)

Disconnected from electric power

Fire suppression system not set

CHECK FILTER light lit Filter pack, Pre-lter or bafe lter not in position Properly install lters

Filter nearing end of service life Arrange to replace lters in a timely manner

REPLACE FILTER light lit

Filter pack plugged Replace lter pack

Fire damper in exhaust collar has closed

One or more vacuum sensing lines or ports
plugged, or sensing line dislodged.

SERVICE REQUIRED

light lit (cooking appliance
not operating)

NOTE: If, after 20 seconds, there is insufcient airow for proper operation, SERVICE REQUIRED
light will illuminate and under-hood appliance (s) will be de-energized.

Press VENTILATOR POWER SWITCH to OFF, then back to ON to reset system.

Reconnect to electric power

Reset circuit breaker for unit
Contact an authorized Ansul®

distributor for repairs

Contact an authorized Wells service

agent for repairs

Contact an authorized Wells service

agent for repairs

NOTE:
FILTERS are the only user serviceable components in this ventilator hood system. For all problems that cannot be remedied by

servicing the lters, contact:

Ventilator section - authorized Wells service agency
Fire suppression system - authorized Ansul® distributor

IMPORTANT:

Contact ANSUL® for re suppression system installation, set-up and service:

Ansul Incorporated 1-800-TO-ANSUL (1-800-862-6785)

One Station Street

Marinette, WI 54143-2542 website http;//www.ansul.com

IMPORTANT:

Parts used in the Ansul® re suppression system are not serviceable by the owner/operator.
Procedures for servicing re suppression equipment are described in:

ANSUL® R-102 SYSTEM DESIGN, INSTALLATION, RECHARGE AND MAINTENANCE MANUAL

(418087, current edition)

NOTE:

ANSUL® Manual 418087 is intended for use by authorized Ansul® service personnel only.

25

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

WIRING DIAGRAM

208/240 VOLT AC 60 HZ L2

TB2

TB1

208/240 VOLT AC 60 HZ L1

CUSTOMER
SUPPLIED
CONTACTOR(S)

120 VOLT

C

N.C.

FIRE
SUPPRESSION
SOLENOID

DETECTION
END OF LINE
RELAY

DECK

DECK

DECK

N.O.

SOLENOID
ACTUATED
SWITCH

RH REAR

CNTR REAR

LH REAR

ELECTRICAL
DETECTORS

TO APPLIANCE

OVER CURRENT

PROTECTED

SUPPLY

EQUIPMENT INTERFACE OPTION 1

POWER SWITCH L2

L3 T3

L2 T2

L1 T1

208/240 V
APPLIANCE
CONTROL
CIRCUIT

SPST
SWITCHED

POWER
SWITCH L1

TB3

TB4

EQUIPMENT
SHUTOFF
CONTACTOR

EQUIPMENT
CUTOFF
TERMINALS

208/240V
APPLIANCE

CONTROL
EQUIPMENT
CUTOFF
TERMINALS

TB3

TB4

TB5

TB6

SERVICE
DOOR SWITCH

LED
LIGHTS
12 VOLT

PREFILTER
PRESSURE
SWITCH

CUSTOMER
SUPPLIED
CONTACTOR(S)

CHANGE
PREFILTER
LIGHT

TO APPLIANCE

OVER CURRENT

PROTECTED

SUPPLY

EQUIPMENT INTERFACE OPTION 2

CHECK
FILTERS
LIGHT

FILTER PACK
INTERLOCK RT

PRE-FILTER
INTERLOCK RT

BAFFLE FILTER
INTERLOCK RT

PRE-FILTER
INTERLOCK LT

BAFFLE FILTER
INTERLOCK LT

EQUIPMENT
SHUTOFF
CONTACTOR

DETECTION
END OF
LINE
RELAY

SOURCE CIRCUIT

BUZZER

TB5

TB6

CUSTOMER

SUPPLIED

WARNING

BUILDING
ALARM
RELAY

T3

L3

AIR CURTAIN
SERVICE
REQ',D LIGHT

N.O.

N.C.

SUPPRESSION
ACTIVATED SWITCH

AIR CURTAIN

PRESSURE SWITCH

C

C

AIRFLOW
SHUTDOWN
PRESSURE SWITCH

SPST
SWITCHED
EQUIPMENT
CUTOFF
TERMINALS

CURTAIN
FAN 2

CHANGE

TB7

TB8

C

NC

NO

NO

NC

FILTER
PACK
LIGHT

CURTAIN
FAN 1

REPLACE
FILTER
PACK
PRESSURE
SWITCH

TIME
DELAY

SERVICE
REQ'D.
LIGHT

MODEL

208-240 60 HZ 1PH

WVU-48

FOR SUPPLY CONNECTION USE #12

AWG COPPER WIRE ONLY SUITABLE

FOR AT LEAST 75C

RELAY

VOLTS

AMPS

BLOWER

N.O.

NEUTRAL

L1

3.5

2M-Z14919 REV A 1-13-2012

240 VOLT AC L2

TB2

120 VOLT

TB1

ELECTRICAL
DETECTORS

DETECTION
CIRCUIT
TRANSFORMER

C

N.O.

N.C.

SOLENOID
ACTUATED
SWITCH

FIRE
SUPPRESSION
SOLENOID

240 VOLT AC L1

DETECTION END
OF LINE RELAY

POWER
SWITCH L2

L3 T3

L2 T2

L1 T1

EQUIPMENT
SHUTOFF
CONTACTOR

TO 240 V
APPLIANCE
CONTROL
CIRCUIT

SPST
SWITCHED

SWITCH LT SWITCH RT

POWER
SWITCH L1

TRANSFORMER

12 VOLT

TB3

TB4

TB5

TB6

EQUIPMENT
CUTOFF
TERMINALS

SERVICE DOOR

LT LED

LIGHTS

TRANSFORMER
12 VOLT

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

CHANGE
PREFILTER
LIGHT

RT
PREFILTER
PRESSURE
SWITCH

CHANGE
PREFILTER
LIGHT

LT
PREFILTER
PRESSURE
SWITCH

RT LED
LIGHTS

12 VOLT

LT
CHECK
FILTERS
LIGHT

RT CHECK
FILTERS
LIGHT

LT FILTER PACK
INTERLOCK

LT PRE-FILTER
#2 INTERLOCK

LT BAFFLE
FILTER #2

INTERLOCK

LT PRE-FILTER
#1 INTERLOCK

LT BAFFLE
FILTER # 1
INTERLOCK

RT FILTER
PACK
INTERLOCK

RT PRE-FILTER
#2 INTERLOCK

RT BAFFLE
FILTER #2

INTERLOCK

RT PRE-FILTER
#1 INTERLOCK

RT BAFFLE
FILTER # 1
INTERLOCK

EQUIPMENT
SHUTOFF
CONTACTOR

DETECTION
END OF
LINE RELAY

BUZZER

SUPPRESSION
ACTIVATED SWITCH

RT AIR CURTAIN
PRESSURE SWITCH

C

LT AIR CURTAIN
PRESSURE SWITCH

C

C

RT AIRFLOW
SHUTDOWN
PRESSURE SWITCH

C

LT AIRFLOW
SHUTDOWN
PRESSURE SWITCH

BUILDING ALARM
RELAY

TB7

TB8

RT AIR
CURTAIN
SERVICE REQ'D
LIGHT

N.O.

N.C.

NC

NO

NC

NO

NO

NC

NO

NC

C

LT AIR
CURTAIN
SERVICE
REQ'D
LIGHT

RT SERVICE
REQ'D. LIGHT

LT
SERVICE
REQ'D.
LIGHT

CHANGE
FILTER
PACK
LIGHT

LT
BLOWER

CHANGE
FILTER
PACK
LIGHT

LT
REPLACE
FILTER
PACK
PRESSURE
SWITCH

RT REPLACE
FILTER PACK
PRESSURE
SWITCH

N.O.

NEUTRAL

L1

TIME
DELAY
RELAY

CURTAIN

FAN 2

CURTAIN
FAN 1

LEFT AIR
CURTAIN

RT
BLOWER

CURTAIN
FAN 2

CURTAIN
FAN 1

RIGHT AIR
CURTAIN

SK2544a

26

EXPLODED VIEW & PARTS LIST

Filter Maintenance

3

2

4

1

1

Baffle Filter: 16” x 20”

Part No: 2I-Z14670

3 4

Filter HEPA/Carbon Pack

Part No: N1-WL0171

Model: WVU48 Filter Assy

2

Pre-Filter Hood

Part No: 2I-Z16258

Pre-Filter Cage

Part No: M3-WL0230

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

SK2553 Rev. D , 10/20/2015

27

EXPLODED VIEW & PARTS LIST

Filter Maintenance

3

2

4

1

1 2

Baffle Filter: 16” x 20”

Part No: 2I-Z14670

3 4

Filter HEPA/Carbon Pack

Part No: N1-WL0171

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

Model: WVU96 Filter Assy

Pre-Filter Hood

Part No: 2I-302579

Pre-Filter Cage

Part No: M3-WL0230

SK2576 Rev. C, 10/20/2015

28

EXPLODED VIEW

Universal Hood Internal Control

12

13

11

See Detail A

See Detail

10

1

2

4

B

8

9

14

5

6

4

7

Nameplate

19

3

18

17

16

15

Model: WVU48 Universal Hood Internal Control

29

SK2554 Rev. A 2/13/2015

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

PARTS LIST

Universal Hood Internal Control

Fig No. Part No WVU48 WVU96 Description

1 2V-307913 1 2 DAMPER FIRE 8X9 WVU

2 N1-WL0244 1 2 TOP DISCHARGE SCOOP ASSY.

3 N1-Z14139 1 2 BLOCK-OFF PLATE, TOP DISCHARGE

4 2E-300407 6 12 SWITCH MANUAL ADVANCE ROT

5 2K-Y8571 3 7 BUSHING SNAP 2 1/8

6 2K-Y1139 1 2 BUSHING HEYCO SB500-6

7 N1-Z14484 1 2 MOUNTING BRACKET, DOOR

8 2U-200577 2 4 MOTOR, FAN 240V, HI-OUTPU

9 2C-45201 4 8 SCREW 8-32X2 PH PAN HD MS

10 N1-WL0172 1 2 DUCTWORK ASSEMBLY

11 N1-Z14097 1 2 FRONT DISCHARGE VENTPANEL

12 2R-Z14532 2 4 CAM LATCH, SLOTTED

13 N1-Z14087 1 2 ACCESS DOOR, ELECT

14 N1-WL0171 1 2 FILTER HEPA/CARBON PACK

15 N1-WL0170 1 2 DOOR ASSY,FRONT ANSUL

16 2R-Z14429 1 2 HANDLE, 5”

17 2C-1810 2 4 WASHER 3/16 BURR STL NP

18 Included with #15 2

19 2D-Z14672 1 2 GREASE CUP

Internal Control Assy

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

30

EXPLODED VIEW & PARTS LIST

Universal Hood Internal Control (Detail A)

1

4

3

2

5

6

7

8

9

11 10 8

Detail A

Blower & Motor Assy

08/2017 MODELS AND LATER*

DETAIL A, Blower & Motor Assy

Part No WVU48 WVU96 Description

1 1 2 BLOWER ASSEMBLY
2 1 2
3 1 2
4 1 2

5 1 2

6 1 2 RUN CAPACITOR, 10MFD, 370V
7 1 2

8 4 8 SCREW 8X12 RPH PAN SELF DRILLING
9 1 2 ASSEMBLY
10 1 2
11 1 2

31

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

EXPLODED VIEW & PARTS LIST

Universal Hood Internal Control (Detail B)

DETAIL B, Internal Control Panel Assy

Fig No Part Number WVU48 WVU96 Description

1 N1-Z15362 1 2 BRACKET, PRESSURE SWITCH

2 2E-Z14673 1 2 PRESSURE SWITCH

3 2P-Z17415 1 TIMER,CUBE/ RELAY

4 N1-Z14886 1 2 BRACKET,PRESSURE SWITCH

5 N1-Z15531 1 2 BRACKET,HEPA PRESS.SWITCH

6 2E-Z15352 1 2 VACUUM SWITCH,HEPA FILTER

2E-Z15365 1 2 PRESSURE SWITCH

7

8 2E-302591 1 2 SWITCH VACUUM #2

9 N1-Z22130 1 2 MOUNTING TRAY, INTERNAL CONTROLS

10 2K-Y5093 2 4 BUSHING-SNAP #SB-1000-12

11 2C-08-07-0042 2 SCREW 8-32X5/8 RHP STL NP

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

12 2C-Z7165 15 30 NUT 8-32 HEX SS W/EXT WSH

13 2C-Z18059

2J-44834 1 BUZZER

14

1 2

08/2017 MODELS AND LATER*

CABLE CLAMP, 0.5 INCH NYLON

32

EXPLODED VIEW

Universal Hood Electrical Components

1

2

21

20

19

18

17

16

8

435

9

6 7

10

11

12

SK2557 Rev. - 1/16/2012

Electrical Components

13141513

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

33

PARTS LIST

Universal Hood Electrical Components

Fig No. Part No WVU48 WVU96 Description

1 N1-Z14142 1 COVER, HOOD SIDE RIGHT

2 N1-WL0245 3 6 LED FLOODLIGHT, 45W CW w/TERM

3 N1-Z15418 1 2 MOUNTING PLATE, CTRL LIGHT

4 N1-WL0281 5 10 LIGHT SIGNAL, CLEAR LED w/TERM

5 N1-WL0250 1 CONTROL PANEL, FRONT ASSY

5 N1-WL0278 1 CONTROL PANEL, FRONT ASSY

6 2M-Z14069 1 GRAPHIC PANEL, NO SWITCH

6 2M-Z14510 1 GRAPHIC PANEL W/ SWITCH

7 2M-306719 1 2 LOGO WELLS DIECAST SHIELD

8 2E-305295 1 SWITCH ROCKER 250V 10A GR

9 N1-Z15435 1 ELEC. AUTOMAN BKT. MODIFY

10 2E-Z15018 1 2 TRANSFORMER, 208/240 12V

11 2E-44514 1 RELAY 208-240V COIL

12 2E-Z15353 1 RELAY, 120V COIL, SPNO

13 2C-1488 6 SCREW 6-32X3/8 RHP STL NP

14 2E-Z15335 1 TRANSFORMER, 208/240

15 WS-WL0282 1 TERMINAL BLOCK ASSY

16 2E-Z14960 1 CONTACTOR, 40A

17 2C-40680 2 NUT 10-32 HEX KEPS MS SS

18 2K-Y8571 3 7 BUSHING SNAP 2 1/8

19 N1-Z14141 1 COVER, HOOD SIDE LEFT

20 N1-Z15344 1 COVER,SIDE ELECTRIC BOX

21 2K-8043 2 BUSHING HEYCO SB-875-10

Control Panel

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

34

EXPLODED VIEW & PARTS LIST

Universal Hood Suppression System

Front

7

6

1

21

3

4

Suppression System

Fig. No Part No WVU48 WVU96 Description

1 2K-47269 8 16 ADAPTER 3/8IN QUICK CON A
2 2O-47267 1 2 NOZZLE ANSUL 1N
3 2O-307481 5 10 ADAPTER SWIVEL ANSUL
4 2O-Z14574 4 8 NOZZLE, #245
5 2C-Z15115 1 2 HEX HEAD PIPE PLUG 3/8NPT
6 2O-302931 1 2 NOZZLE 1 W
7 2O-304433 2 4 TANK SS ANSULEX 1.5 GALLO
8 2O-47272 1 PULLEY ELBOW

9 N1-Z15435 1 1 ELEC. AUTOMAN BKT MODIFY
10 2O-Z14918 1 2 ANSUL CARTRIDGE LT-30-R
11 2O-308131 1 REMOTE PULL STATION RED
12 2O-307966 - 1 ANSUL REG. ACTUATOR ASSY
13 2K-Z15635 - 1 ELBOW, MALE 7/16-20X1/4NPT

3

8

9

10

11

5

1

13

12

10

4

Suppression System

SK2558 Rev. A 1/16/2015

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

35

EXPLODED VIEW & PARTS LIST

Universal Hood Detection System

Adapter 1/2” Quick Seal

Part No: 2T-Z15320

Thermal Detector-225°F

Part No: 2T-Z15320

Thermal Detector-275°F

Part No: 2T-Z16137

Detection System

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

SK2559 Rev. A 7/25/2012

36

EXPLODED VIEW & PARTS LIST

Universal Hood Base Assy

3

2

1

17

4

5

5

6

7

8

9

10

11

15

16

12

2

14

13

Model: WVU48 Base Assy

Base Assembly

Fig No. Part No WVU48 WVU96 Description

1 N1-Z15193 2 BASE DEFLECTOR
2 2C-35487 66 SCREW 8-32X5/16 PH TR HD
3 2C-1825 16 WASHER #8 EXT STL NP
4 N1-WL0176 1 BASE,SUPPORT ASSY LFT

5

6 2C-6517 70 85 NUT 1/4-20 HEX STL NP
7 2C-A27469 70 85 WASHER,FLAT 1/4IN 7/8OD 1
8 2C-Z5555 70 85 BOLT 1/4-20 X .75 HEX SS

9 2C-31053 4 NUT 8-32 KEPS MS NICKEL
10 2P-70903-05 1 PLG BTN PLTD MTL 7/8
11 N1-WL0126 1 BOX, MANUAL PULL ASSEMBLY

12

13

14 N1-WL0177 1 BASE,SUPPORT ASSY RT
15 2O-308131 1 REMOTE PULL STATION RED
16 2C-31730 2 SCREW 8-32X1/2 PH TR HD M
17 2C-6349 16 SCREW #8X3/8 B THP STL NP

N1-Z16772
N1-Z16774

N1-WL0180 1 COVER,BASE SIDE RT ASSY
N1-Z14152 1 COVER, BASE SIDE LEFT
2A-307628
2A-Z16259 LEG, 10” ADJ. 1/2-13 SS (Optional)

2 BASE,BACK SUPPORT

3 BASE,BACK SUPPORT 8FT

4

LEG 6 ADJ 1/2-13 SS

37

SK2561 Rev. A 11/18/2013

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

PARTS & SERVICE

DESCRIPTION PART NO.

IMPORTANT: Use only

factory authorized service parts

and replacement 

For factory authorized service,
or to order factory authorized
replacement parts, contact your
Wells authorized service agency,
or call:

Wells Manufacturing

265 Hobson Street

Smithville, Tennessee 37166 U.S

Service Dept.

phone: [phone]
fax: [phone]

Service Parts Department can
supply you with the name and
telephone number of the WELLS
authorized service agency
nearest you.

lters.

.A.

CUSTOMER SERVICE DATA

please have this information available if calling for service

RESTAURANT _____________________________ LOCATION _____________

INSTALLATION DATE ________________________ TECHNICIAN ___________

SERVICE COMPANY ________________________________________________

ADDRESS ___________________________ STATE ______ ZIP__________

TELEPHONE NUMBER (_____)_____-_________

EQUIPMENT MODEL NO. _____________EQUIPMENT SERIAL NO. _______________

VOLTAGE: (check one) 208 240

M522 p/n 2M-Z16247 OpM WVU- Universal Hood

38

WELLS MANUFACTURING

265 Hobson Street, Smithville, Tennessee 37166

telephone: [phone]

fax: [phone]

www.wells-mfg.com