Avtec AL Service Manual

VENTILATION SYSTEMS

INSTALLATION AND OPERATING

TECHNICAL MANUAL

FOR ADDITIONAL COPIES VISIT OUR WEB SITE AT

www.avtecind.com

AVTEC INDUSTRIES INC. 120 KENDALL POINT DR. OSWEGO, IL 60543-8898 630-851-4800

TABLE OF CONTENTS

I. TYPES OF SYSTEMS 1

A. Baffle Filter . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

B. Modular Grease Extractors [Energy Aire] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

C. Auto Wash [Energy Aire] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

D. Airflow Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 2

E. Fire Extinguishing Systems .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

II. INSTALLING THE VENTILATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2/3

III. CONTROL PANEL . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

A. Wall Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

IV. ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

A. VCW Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

B. PAWS Control Panel . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5/6/7

C. Damper and Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

D. Ventilator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

V. PLUMBING CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A. Hot Water Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

B. Cold Water Mist [optional] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C. Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

D. Field Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

E. Detergent Pump and Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

F. Interconnecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

G. Detergent Flow Chart . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

VI. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. VCW Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1. Adjustment . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2. Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3. Trouble-Shooting . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11/12

B. PAWS Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12/13

1. Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12/13

a. Fan Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

b. Fan Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

c. Wash Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

d. Wash Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. Trouble Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

a. Low Detergent Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

b. Supervised Valve [optional] . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Hood Plenum Fire Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

a. Automatic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

b. Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4. Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13/14

a . Setting The Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13/14

b. Setting The PAWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1. Single Wash Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2. Multi-Wash Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

c. Setting The Fire Delay . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

d. Reviewing The Daily Event Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

e. Changing The Daily Event Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

f. Repeating The Daily Event Schedule . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 15

g. Holiday Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

h. Fan On During Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

i. Power Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

j. Last Command Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

k. Diagnostic Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

l. Detergent Pump and Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

VII. VENTILATOR FEATURES AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

A. Baffle Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

B. Modular Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

C. Auto Wash Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

D. Air Adjustment Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

E. Fire Dampers . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. .. . . . . . . .. .. . 20

F. Air Make-Up [Supply] Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. . 20

G. Auto Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

H. Cold Water Mist [Optional] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

I. Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

VIII. PERIODIC MAINTENANCE . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

A. Baffle Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

B. Modular Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

C. Grease Trough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

D. Grease Collection Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

E. Hood Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

F. Detergent System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

G. Fusible Link Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

IX. PARTS LIST

A. PAWS Panel - Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

B. VCW Panel - Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

C. PAWS/VCW Panel - Plumbing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

D. EVAC Detergent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

E. Electro-Mechanical Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

F. Fusible Link Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

G. Hood Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25/26

X. OTHER DATA AND DRAWINGS

A. EVAC Cleaner Cut Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

B. Air Movement Recordings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

C. Calculating and Recording Air Movement Readings . . . . . . . . . . . . . . . . . . . . . . 29

D. Calculating and Recording Air Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

XI. WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

1

I. TYPES OF SYSTEMS

This manual covers three [3] of the basic types of

systems offered by AVTEC - Baffle Filter [AF],
Modular Grease Extractor [AX] and Auto Wash
Down [AW].

A.Baffle Filter [AF Series] [See fig. #1

]

Model AF ventilators are listed by Underwriters

Laboratories Inc. [UL] and are built in accordance
with the National Fire Protection Association
[NFPA] Standard No. 96 for use with UL Listed
fire extinguishing systems for duct hood
protection. They are available with or without an
automatic exhaust fire damper. They utilize UL
Classified removable baffle filters to extract
grease and provide a limited fire barrier. The
canopy contains an integral grease trough and
removable grease receptacle(s). Surface,
plenum and duct collar fire extinguis hing systems

may be factory supplied.
Vent Control Panels may be supplied with these
systems. See additional wiring diagrams for
options.

canopy contains an integral grease trough and
grease collection receptacle(s). Surface, plenum
and duct collar fire extinguishing systems are

required and may be factory supplied.

Vent control panels may be supplied with these
systems. See additional wiring diagrams for
options.

Installation shall be in accordance with NFPA 96.

C.Auto Wash Down [AW Series] Energy Aire [see

fig. #3]

Model AW ventilators are listed by UL and built in

accordance with NFPA Standard No. 96 for use
with UL Listed fire extinguishing system s for duct
and hood protection. They are available with or
without an automatic exhaust fire damper.

Installation shall be in accordance with NFPA 96.

B.Modular Grease Extractors [AX Series] Energy

Aire [see fig. #2]
Model AX ventilators are listed by UL and built in
accordance with NFPA Standard No. 96 for use
with UL Listed fire extinguishing s ystems for duc t
and hood protection. They are available with or
without an automatic exhaust fire damper.

These models utilize high velocity removable
grease extractors. T his exclusive design extracts
up to 95%* of airborne grease c ontaminants. T he

1

*Data from independent tests not a part of UL test

procedure.

These systems utilize a high velocity grease
extractor. This exclusive design extracts up to
95%* of airborne grease contaminants. An

1

integral water wash system cleans the inside of
the grease extraction cham ber either by manual
activation of the Wash Start button or by a
programmable tim er. T he duration of the wash is
electrically controlled. The wash system is also
activated by an electrical thermostat or a manual
switch in the event of a fire condition. A surface
fire extinguishing system is required and may be
factory supplied.

Auto Wash control panels are provided with these
systems. W iring diagrams are provided with this
manual.

Installation shall be in accordance with NFPA 96.

D.Airflow Requirements

Minimum exhaust airflow requirements and

maximum make-up airflow requirements [where
air is introduced directly inside the canopy] are
shown on the chart below. These flow rates were
established under laboratory conditions. Greater
exhaust airflows and/or reduced make-up airflows
may be required for complete capture.

Model No.
AFWO,AFBO 200 300 525
AFDO,AFWP
AFBP,AFDP
AFWE,AFDE
AFBE
AFWI,AFBI 250[175] N/R N/R
AFDI,AFWD
AFBD,AFDD
AFIO,AFIP 250 400 600
AFIE
AFII,AFID 300[150] N/R N/R
AXWO,AXBO 200 275 525
AXDO,AXWP
AXBP,AXDP
AXWE,AXDE
AXBE
AXWI,AXBI 250[175] N/R N/R
AXDI,AXWD
AXBD,AXDD
AXIO,AXIP 250 400 600
AXII 300[150] N/R N/R
AWWO,AWWP 194 270 *525
AWWE,AWDO
AWDP,AWDE
AWBO,AWBP
AWBE
AWWI,AWBI 250[190] 270[146] N/R
AWDI,AWWD
AWBD,AWDD
AWTE,AWTP 400 420 N/R
AWTO
N/R = Not Recommended

*=Manufacturer's test results not yet submitted to U.L. for capture tests.

Surface Equip. Surface Equip. Surface Equip.

CFM REQUIREMENTS

400°F Cooking 600°F Cooking 700°F Cooking

E.Fire Extinguishing Systems

There are two basic types of ventilator fire
extinguishing systems in use today:

Wet Chemical and Water Mist. Wet Chemical
Systems may be all or partially factory installed
[by the Fire System Manufacturer]; f inal hook up
and certification at job site is done by the Fire
System Manufacturer's local representative.
These systems must be periodially inspected,
and critical parts replaced. It is suggested that a
service contract be purchased from the local
representative. For further details refer to the
manufacturer's technical manual.

AVTEC manufactures and installs a water mist
fire extinguishing system, "MIST-A-FIRE", that
connects to the building fire sprinkler system
[must be "wet" type system]. Final connect of this
system must be done in the field by the sprinkler
contractor or authorized plumber. A
certification/inspection report is done by an
authorized AVTEC representative. Periodic
inspection is generally required, but replacement
of parts and periodic maintenance is virtually
eliminated. For further details, refer to the
AVTEC MIST-A-FIRE Installation and Operating
Technical Manual.

II. INSTALLING THE VENTILATOR

The ventilator is supplied with brackets to facilitate
the attachment of hanger r ods to the vent. Hanger
rods should be attached to all brackets to ensure
proper support.

A.Ascertain that the ceiling/roof str ucture is strong

enough to support the weight of the hood and
support system. T he approximate weight of the
hood is shown below:

45 lbs/linear ft. for hoods w/o AMU plenums.
55 lbs/linear ft. for hoods w/AMU plenums.
125 lbs for fire control cabinet.

B.Carefully uncrate the hood so as not to dent or

scratch the outer surface.

C.Position the hood on the floor in approximately

its final installed location.

D.Use 1/2" threaded rods to hang the hood. The

hanger rods should be approxim ately 1/2" closer
to the wall at the structural attachment location
than at the top of the hood. [see fig. #4] This
ensures that the hood is held tightly against the
wall.

Note! Do not remove

Support Brace until Ventilator
installation is complete. Upon completion of
installation, dispose of Support Brace and replace the
Acorn Nuts to their original locations.

Error! Not a valid link.

Fig 4

E.The hood should be hung so that the bottom of the
hood is 6'-6" above the finished floor unless otherwise
specified. Carefully lift the hood into position being
certain to avoid scratching the finished surfaces.

2

Install 1/2" threaded rod from each bracket and the
structural support. Secure rods with heavy duty nuts.
[see fig. #5] Be sure that the hood is level.

Error! Not a valid link.

Fig 5

Tower Interface Detail
Place trim collar on tower. Position tower under hood.
Fully tighten trim collar retainer hardware after tower
and hood are aligned properly. See fig. A, B, and C
(next page).

F.The entire exhaust duct system must be con-

tinuously welded. This includes the connection
to the duct collar and the roof curb. All welds
must be liquid tight.

NOTE: Welds must not impede operation of

damper.

G.Connect the lights to the circuit breaker panel

through the light switch. All connections should
be in compliance with NFPA 70, National Electric
Code [NEC].

H. Install bulbs in the light fixture[s].

I.Install the grease filters [AF] or modules [AX].

J.Install the grease receptacles [AF or AX]

NOTE: A minim um of a three inch [3"] insulated
fire barrier and air space must be maintained
between the capture area skin of the ventilator
and any combustible surface, including wall and
ceiling. AVTEC ventilators normally have a 3" air
space; insulation is added when specified.

III.CONTROL PANEL [if provided]

Control panels are provided with all auto wash type
ventilators [Models AW- ] and are optional with the
baffle filter type [AF- ] and modular grease
extractor type [AX- ]. Control panels with Models
AF- and AX- do not have the auto wash plumbing
assembly compartments. Any control panel may
be provided with a integral MIST-A- FIRE
Extinguishing System alarm panel and sprinkler
assembly piping; refer to the MIST-A-FIRE
technical manual.

A.Wall Attachment

Control panel dimensions and connection detail
are shown on the enclosed shop drawing.
Panels may be surface mounted, partially
recessed or fully recessed as shown on fig. 6.

1.Surface Mounted
Drill four [4] holes in ventilator plumbing
compartment as required. Be careful not to
damage any components. Avoid drilling into
electrical compartments. Bolt to wall with
anchor bolts or other acceptable means.
Weight of control panel varies from 90 lbs. to
200 lbs.

2.Recessed
Cut hole in wall 1/2" greater than O/A
dimensions of control box [shown on shop
drawing]. Spacers or support angles may be
necessary to provide proper support. It is
recommended that panel be bolted to wall
similar to method used for surface mounted
above.

3

4

IV. ELECTRICAL CONNECTIONS

A.VCW Control Panel [Refer to fig. 7]

1.Typical field connection terminals for VCW
Control Panel are shown in fig. 7. For custom
features such as sequential wash, tim e delay,
etc. refer to AVTEC shop drawing in back of
this manual.

2.Terminals No. 1 and No. 2 are for the
120vac Power Supply. Terminal No. 1 is Hot
and Terminal No. 2 is Neutral.

3.Terminals No. 3 and No. 4 are 120vac
power for the W ater Solenoid and Detergent
Pump. These terminals are "hot" whenever
the Water W ash Solenoid and the Detergent
Pump is scheduled to be "ON" or when there
is a fire condition. Terminal No. 5 provides
power for a pump/prime switch with a
momentary closed/normally open contact.
This switch is helpful in checking the
performance of the pump as well as in
priming the pump.

B.Programmable Automatic Wash Sequence

[PAWS] Control Panel

1.Typical Field Connections for the PAWS
Control Panel are shown on [figs. 10, 11, and
12]. Note that all options and connections may
not be included on your system.

2.Terminal Block #1 [TB-1] has three [3]

terminals and is located on the right-hand side of
the Input/Output [I/O] Board. Terminal #1
[uppermost] is for the Hot lead of the power
supply and is protected by a fuse located within
the panel. Terminal #2 [center] is for the Neutral
lead of the power supply. Terminal #3
[lowermost] is used to ground the Input/Output
Board to the Control Panel Housing.

Terminal No. 4 is Hot and Terminals No. 2 & 3
are Neutral.

3.Terminals No. 3 and No. 6 carry 120vac
whenever the fans are scheduled to be ON.
They are used to activate the fan contactor[s]. In
the event of a fire situation, power is removed
from Terminal 5 which provides power for
Terminal No. 6. Terminal No. 6 is the Hot lead
and Terminal No. 3 is Neutral.

Fig. 7

5

4.Terminal Block #2 [TB-2] has three [3] pairs of
terminals and is located at the upper right corner
of the Input/Output Board. The first pair of
terminals are for the number one wash valve
solenoid. This will be the only wash output
active in a P-10-__ or P-15-__ Control Panel.
The second pair of terminals are f or the number
two wash valve solenoid. The third pair of
terminals are for the number three wash valve
solenoid.

5.Terminal Block #3 [TB-3] has three [3] pairs of
terminals. It will not be present on P- 10-__ or P­15-__ Control Panels. The firs t pair of terminals
are for wash valve solenoid number four. The
second pair of term inals are for the number five
wash valve solenoid. The third pair of terminals
are for the number six wash valve solenoid.

6.Terminal Block #4 [TB-4] has three [3] pairs of
terminals. It will not be present on P- 10-__ or P­15-__ Control Panels. The firs t pair of terminals
are for the number seven wash valve solenoid.
The second pair of term inals are for the number
eight wash valve solenoid.

7.Terminal Block #5 [TB-5] has three [3] pairs of
terminals. T he first pair provides power for the
detergent pump. The second pair provides
power for the PAW S Alarm/Trouble horn. [The
third pair provides power for the vent fan
contactors. [see figs. #8a & 8b]

Note that the maximum output is one-and-one­half [1-1/2] amperes. If the total inrush current
for all contactors will exceed this limit, an
intermediate relay must be used.

8.Terminal Block #9 [TB-9] has three [3] pairs of
terminals and is located at the lower left corner of
the Input/Output Board. The first pair of
terminals are for connection to the optional
supervised shut-off valve. If the panel is not
equipped with this option, a jumper wire must be
installed. The second pair of terminals are for
connection to the Manual Fire Switch. T he third
pair of terminals are for connection to the
automatic fire switch contacts terminals are for
connection to the automatic fire switch contacts.

Fig 8a

Fig 8b

6

9.Terminal Block #11 [TB-11] has three [3] pairs of
terminals. The first pair of terminals are low voltage
connections for the detergent low level probe. The
probe should be installed in the detergent container
so that it does not protrude above the top of the
detergent pump inlet strainer. [fig. #9] This is
intended to prevent cavitation of the pump and will
advise when the tank needs to be refilled. The probe
rods may be cut to facilitate a neat and effective
installation.

Fig 9

10.Terminal Bloc k #12 [TB-12] has three [3] pairs
of terminals. The first pair of terminals are for
connection to the optional battery.

7

Terminal Block Designation

B. PAWS Cont rol Panel
TB-1 1-Line Hot
2-Line Neutral Incoming Power Supply 120vac, 15 amps, 60 Hz
3-Mech. Ground
TB-2 1-Switched Hot
2-Neutral Wash Solenoid #1, 120vac , 1.5 amps max
3-Switched Hot
4-Neutral Wash Solenoid #2, 120vac , 1.5amps max
5-Switched Hot
6-Neutral Wash Solenoid #3, 120vac , 1.5amps max
TB-3 1-Switched Hot
2-Neutral Wash Solenoid #4 120vac, 1.5amps max
3-Switched Hot
4-Neutral Wash Solenoid #5 120vac, 1.5amps max
5-Switched Hot
6-Neutral Wash Solenoid #6 120vac, 1.5amps max
TB-4 1-Switched Hot
2-Neutral Wash Solenoid #7 120vac, 1.5amps max
3-Switched Hot
4-Neutral Wash Solenoid #8 120vac, 1.5amps max
TB-5 1-Switched Hot
2-Neutral Detergent Pump, 120vac, 1.5apms max
3-Switched Hot
4-Neutral PAWS Alarm Horn, 120vac, 1.5amps max
5-Switched Hot
6-Neutral Fan Contractor, 120vac, 1.5amps max
TB-6 1-Switched Hot
2-Neutral Spare Output [PAW ] 120vac 1.5amps max
*3-Switched Hot
*4-Neutral Spare Output [MAF II] 120vac, 1.5amps max
5-Neutral Auxillary
6-Hot Power Tap 120vac, 120amps max
TB-7 *1-NC
*2-C Trouble Dry Contacts [MAF II ] 1.5amps @ 28vdc/120vac
*3-NO
*4-NC
*5-C Trouble Dry Contacts [MAF II ] 1.5amps @ 28vdc/120vac
*6-NO
TB-8 *1-NC
*2-C Fire Dry Contacts [MAF II ] 1.5amps @ 28vdc/120vac
*3-NO
*4-NC
*5-C Fire Dry Contacts [MAF II ] 1.5amps @ 28vdc/120vac
*6-NO
TB-9 1-Line Hot PAWS Supervised ]
2-Switched Hot Valve Switch |
3-Line Hot PAWS Manual | 120vac, 25 milliamps
4-Switched Hot Fire Pull Switch |
5-Line Hot PAWS Automatic |
6-Switched Hot Fire Switch ]
TB-10 *1-Line Hot MAF II Water ]
*2-Switched Hot Flow Switch |
*3-Line Hot MAF II Water | 12vdc, 25 milliamps
*4-Switched Hot Press ure S witch |
*5-Line Hot MAF II Supervised |
*6-Switched Hot Valve Switch ]
TB-11 1-Detergent
2-Probe 20vdc, 2 milliamps
*3-Positve
*4-Negative MAF II Horn, 12vdc, 1.5am ps
TB-12 1-Positve
2-Negative Battery, 12v, 5A Hours
3-Positve Auxillary
4-Negative Power Tap

*See “Mist-A-Fire Technical Manual” (fig. 10)

[For authorized sevice techinician use only]

8

C.Dampers & Detectors [AW & optional AX
Models] [Fig. 13]

Terminal block in the damper housing is pre­wired to a junction box above. The wires are
colorcoded; refer to field interconnection wiring
diagram. [Refer to enc losed contr ol panel wiring
diagram]. Interconnection may be required
between damper housings.

Fig. 13

D.Ventilator Lights

A 120vac supply circuit must be supplied thru a
ventilator light switch to the ventilator. The light
switch may be supplied by AVTEC in the control
panel or on the hood. Interconnection may be
required between light fixtures.

V.PLUMBING CONNECTIONS

[AW Models] [Refer to fig. 14]
The connections listed below are shown on page

8.
A.Hot Water Wash

140° hot water is needed to properly clean the
extractor cham ber. Supply is connected to the
control panel inlet. Control panel outlet is
connected to the ventilator inlet[s].

NOTE: A vacuum break er and check valve m ust
be installed at least 6" above the ventilator inlet
to prevent back-up of detergent water into f resh
water supply.

B.Cold Water Mist [Optional]

Cold water supply is connected to the control
panel inlet. Control panel outlet is connected to
the ventilator inlet[s].

C.Drain[s]

The drain pipe is connec ted at one or both ends
of the ventilator and run to an air gap assem bly,
hub & funnel or open floor drain to act as an
anti-siphoning device. An air gap assembly is
recommended f o r the most sanitary and positive
connection. The air gap should be the same
size on the inlet end and one pipe size larger on
the outlet to avoid splash over.

D. Field Joints
Interconnection between field joints on AW

Hood attach with 2” elbows and expandable
coupler. [Refer to fig. 11]

E.Detergent Pump and Tank

Detergent pump tubing [plastic, copper or
stainless steel] must be provided from the
detergent pump outlet to an injection point
between the vacuum breaker/check valve and
the ventilator inlet. For larger installations
multiple pumps are used. Normally the
detergent pump and tank are located in the
control panel, and tubing from the detergent
pump to the detergent tank is factory connected.
In the application when the detergent pump and
tank are located in a remote area, tubing is
provided for connection from the pump to the
tank.

Pumps may be pre-wired in control panel or
Energy Distribution System, or located rem otely.
Detergent tank must always be located within 5
ft. of the pump.

F.Interconnecting

Depending on specifications, some ventilator
sections may require interconnection of hot
water, cold water or drains. See shop drawing
in back of this manual for detail.

Error! Not a valid link.

Fig. 11

9

10

VI. OPERATION

A. VCW Control Panel [Refer to fig. 16]

1.Adjustment
The component layout is shown below. The
only adjustment necessary is for the auto wash
timer relay. Refer to Sec. VII. G, page 18 for
function explanation. Normally three minutes is
used for ovens, s team equipm ent and light duty
ranges, and five minutes is used for fryers,
griddles, etc. A longer wash may be required
for charbroilers.

2.Sequence Of Operation
Press "START" Button to turn f an[s ] ON. When
the time com es to shut down the fan[s] [either
at the end of the day or the end of the cooking
period] press the "STOP" Button. If the system
is equipped with auto wash, the fans will shut
OFF and the auto wash and detergent pump
will come ON. At the end of the W ash Cycle,
the auto wash solenoid closes.

If the fans are OF F you can advance directly to
the Auto Wash [T im e- Delay] Period by pressing
the "STOP" Button.

In the event of a fir e condition, the f ans will shut
OFF [if they were ON] and the Auto W ash will
come ON [if the unit is so equipped]. The unit
will remain in this condition until the
thermoswitch resets itself and then the panel
will return to its mode of operation before the
fire condition occurred.

NOTE: If a fire condition occurs during the
timed auto wash/time-delay period, the timers

will continue to time down. For example, if the
fire were to occur after 5 minutes of a 30
minute time-delay period and lasted for 15
minutes before the fire switch [manual] or
thermoswitch [auto] was activated, then the
fan[s] would com e on for 10 m inutes, then shut
OFF.

3.Trouble- Shooting [VCW]
a.Fans won't activate when start button is

pushed.

1.Check the wiring to the fan contactor and
verify that it is wired according to the
VCW panel schematic.

2.Check the inter-wiring between the VCW
panel and the electro-mechanical
dampers located on the ventilator hoods.
If the wiring is correct proceed to step c.

3.Check terminals No. 1 and No. 2 with a
voltmeter. 120vac should be present at
all times. If voltage is present, proceed
to step 6.

4.No voltage present. Check wiring to
ensure terminals No. 1 and No. 2 have
been connected to a proper 120vac
power source.

5.Check that all related fuses ar e intact and
that the circuit breaker in main circuit
breaker panel is "ON".

6.Check the fire switch pull station
[optional] for proper wiring and also
check that it is properly closed and
latched.

7.Check the dampers on all interconnected
ventilator hoods for a fire condition.

8.In a normal condition damper terminals A
& C will have 120vac. In a fire condition
terminals B & C will have 120vac.

a.If terminals B & C have 120vac fans will

not operate. Voltage present at these
terminals indicates that the
thermoswitches in the duct have
closed. These thermoswitches
automatically reset after cooling to a
temperature below 300°F.
If the thermoswitch does not reset after
cooling, replace it with a new
thermoswitch.

b.Check for 120vac at terminals No. 2 &

No. 5. This voltage should be present
at all times. If voltage is present
proceed to step 8c. If voltage is not
present refer to step 8.a as listed
above.

c.While pushing the "START" Button,

terminals No. 3 and No. 7 will have 120

11

vac as long as the "START" Button is
depressed.

d.Once the "Start" Button is released,

power[120vac] will be present at
terminals No. 2 & No. 6. If no power is
present after releasing start button
verify that the fan contactor has been
wired as shown on VCW Panel
Electrical Schematic.

e.Voltage present at terminals No. 2 &

No. 6 after pushing "START" Button,
fans won't operate. This condition
indicates that the control wiring is
operating properly, therefore the
problem must be in the f an motor itself
or the power supply wiring to fan thru
the normally open contactor or the f an
contactor.

b.Auto Wash Solenoid does not open.

4.Check all the damper s on the ventilator to
verify that none of the dampers have
been activated into the fire condition.

5.Check condition of solenoid for damage
or debris.

d.Solenoid coil activates but no water flow is

present.

1.Check water pressure gauge. If water
pressure of 25 psig or more is present
proceed to steps 2 & 3. If no water
pressure is present proc eed to steps 4 &

5.

2.Check solenoid valve for damage or
debris.

3.Check for water line blockage and verify
all spray nozzles are clear.

4.Check all water supply valves to verify
they are open.

5.Check and clean all line wye strainers.

1.Check that fuse is intact.

2.Check terminals No. 1 and No. 2 with volt
meter.
a.If 120vac proceed to step 2d.
b.If no voltage, check fus e and wiring to

panel.

c.Check panel circuit breaker and verify

that it is "ON",

d.Press "Stop" button in completely and

hold for one [1] full second.

e.Check terminals No. 3 and No. 4 with

volt meter.
i.If 120vac is present, check wiring to

water solenoid. Check voltage at
solenoid coil. If 120vac is present,
replace coil. If no voltage, refer to
step 2.b.

ii.Check the timer r elay inside the VCW

Panel to verify that power is going thru
the contacts and that the coil is
engaging. If relay doesn't function
properly, replace the relay, If relay
functions properly proceed to step 4.

iii.Check wiring against schematic to

verify that is correct. Check condition
of wires and connections to verif y that
they are not loose or damaged.

c. Auto Wash Solenoid will not close.

1.Check term inals No. 3 & No. 4 f or voltage
[120vac]. If no voltage is present
proceed to step e.

2.Check the wiring to the fire switch pull
station to see that it has been wired to
the correct contacts.

3.Check the fire switch pull station
[optional] to verify it has not been pulled.

B. PAWS Control Panel

1. Manual Operation

[Refer to fig. 17]

The Programm able Automatic W ash Sequence
[PAWS] Panel is designed to control the
operation of the ventilator exhaust and air
make-up fans and wash the grease extraction
plenum with a hot water/detergent solution.
The fan operation and wash sequence can be

12

started and stopped manually or programmed
or automatic operation.

a. Fan Start
The exhaust and air make-up fans can be
started manually by pressing "FAN ON/WASH
OFF" on the PAWS panel. If the wash cycle is
in progress it will stop immediately and the fans
will start. The PAW S disp lay will indicate "FAN
ON/WASH OFF".

b. Fan Stop
The exhaust and air make-up fans can be
stopped manually by pressing "FAN
OFF/WASH OFF" on the PAWS panel. The
fans will stop im mediately. The PAW S display
will indicate "FAN OFF/WASH OFF".

c. Wash Start
The wash cycle can be started manually by
pressing "FAN OFF/W ASH ON'' on the PAWS
panel. If the fans are on, they will stop
immediately. The display will indicate "W ASH
1" and the total time [in hours and minutes]
remaining until the wash cycle ends.

d. Wash Stop
The wash cycle can be stopped manually by
pressing "FAN OFF/WASH OFF" on the PAWS
panel. The wash cycle will stop immediately.
The PAW S display will read "FAN OFF/W ASH
OFF".

2. Trouble Conditions
a. Low Detergent Indicator
If the detergent level drops below the bottom of
the detergent probe, the PAW S panel horn will
sound and the display will flash "DETERGENT
LOW". T he horn can be silenced by pressing
the "VFC Horn Silence" s witch, but the trouble
condition will continue to be displayed. The
detergent pump will not operate until the
detergent tank is refilled. The fan and wash
cycles will continue to operate normally,
however, the display will continue to flash
"LOW DETERGENT". When the detergent
tank is refilled, the trouble condition will
automatically clear itself after appr oximately 10
seconds.

b. Supervised Water Valve [optional]
If your PAWS panel is equipped with the
optional supervised valve, the PAWS panel
horn will sound and the display will flash
"PLENUM WASH AND FIRE CYCLES LOST"
when the valve is closed. The horn can be

silenced by pressing the "VFC Horn Silence"
switch, but the trouble condition will continue to
be displayed. The fan will operate normally,
hot water will not flow during the wash cycle
and the display will continue to flash "PLENUM
WASH AND FIRE CYCLES LOST ". When the
valve is opened, the alarm condition will
automatically clear itself. In the event that the
detergent level drops below the probe and the
optional supervised valve is closed at the sam e
time, the horn will sound and the display will
alternate between "DETERGENT LOW" and
"PLENUM WASH AND FIRE CYCLES LOST".
The horn can be silenced by pressing the "VFC
Horn Silence " switch.

3. Hood Plenum Fire Protection
a. Automatic Operation
In the event of a fire in and/or under the
ventilator, the fans will turn off and the plenum
wash will be activated when the temperature at
the duct collar exceeds 300°F. The display will
read "AUTO FIRE CYCLE FAN OFF/WASH
ON" and the PAWS panel alarm will sound.
The alarm cannot be silenced. When the
temperature at the duct collar drops below 300
°F, the PAWS panel will enter the fire delay
cycle. During the fire delay cycle the fan will
remain off and the hood plenum wash will
remain on for a programmable period of time
then automatically return to normal operation.
The fire delay cycle can be terminated by
pressing "FAN OFF/WASH OFF" on the PAWS
panel. [See Sec. 4.b.2.c for setting Fire Delay
Cycle Duration].

b. Manual Operation
The PAWS panel may be equipped with the
optional "Manual Fire Switch". Pulling the
"Manual Fire Switch" will turn on the exhaust
fan(s) and activate the plenum hood wash to
act as a fire barrier. The display will read
"MAN'L FIRE CYCLE FAN ON/WASH ON" and
the PAW S panel alarm will sound. The alarm
cannot be silenced. After the "Manual Fire
Switch" is reset, the PAW S panel will enter the
fire delay cycle. During the fire delay cycle the
exhaust fan will remain on f or a programm able
period of time then automatically return to
normal operation. The f ire delay cycle can be
terminated by pressing "FAN OFF/WASH OFF"
on the PAW S panel. [See Sec. 4.3 for setting
Fire Delay Cycle duration].

4. Programming Instructions [Refer to fig. 17A
& 17B]
a. Setting the Clock

13

The PAW S Control Panel is equipped with an
integral clock which can be used to
automatically operate the fan and wash cycles.
To set the time press "RETURN CLOCK" once.
The display will read "SET DAY AND TIME
SELECTED" and then change to "SET DAY
AND TIME" as well as the day and time. Press
"CHANGE CLEAR" and the day and time will
begin to flash. Press "DAY+" and/or "DAY-" to
set the correct day. Press "HOUR+" and/or
"HOUR-" to set the correct hour. Note if "AM"
or "PM" is displayed correctly. Press
"MINUTE+" and/or "MINUTE-" to set the
correct minutes. When you are satisfied that
the day and time are correctly displayed, press
"SAVE ENTER". The display changes to the
Normal Display. If no key is pressed f or thirty
[30] seconds, the display will automatically
return to Normal Display.

b. Setting the PAWS

1. Single Wash Models
The wash can be programm ed to run for up to
fifteen [15] minutes. It is followed by a recovery
period of from zero [0] minutes up to two [2]
hours. This period c an be used in installations
which require that the fans automatically turn
on for a period of time af ter the wash cycle is
complete.

To review the PAWS, press "PAWS". The
display will indicate "PAWS MODE
SELECTED" for about three [3] seconds then
change to indicate the total PAWS duration
[wash and recovery periods] in hours and
minutes, and the duration of the wash period in
minutes. Press "NEXT" to dis play the duration
of the recovery period. Press "NEXT" to
display the duration of the fire delay cycle.

To change the duration of a segment, press
"NEXT" or "LAST" until the appropriate
segment is displayed, then press "CHANGE

CLEAR". When the display flashes, press
"MINUTE+" or "MINUTE-" until the duration is

displayed, then press "SAVE ENTER" to retain
that time. The total PAWS duration is
automatically updated.

To change the duration of an additional
segment, repeat the above procedure.
When all segments have been set, press
"RETURN CLOCK" to return to Normal Display.
If no key is pressed for thir ty [30] seconds, the
panel will automatically return to Normal
Display.

2. Multi-Wash Models

[P-10__ & P-15__]

[P-20-__ & P-25-___]

As many as eight [8] hood sections can be
programmed to wash in s equence. [The total
number of washes and outputs is determined
prior to shipment and set at the f actory]. Each
section can be programmed to wash for a
different period of time, up to fifteen [15]
minutes per section.

There are also up to eight [8] recovery periods
which can be programmed for different
durations from zero [0] minutes up to two [2]
hours per segment. T he recovery periods can
be used to allow the water heater to recover
between wash segments in installations with a
limited hot water supply. It can also be used in
installations which require that the fans
automatically turn on for a period of time after
the final wash period.

To review PAW S, press "PAWS". The dis play
will indicate "PAWS MODE SELECTED" for
about three [3] seconds then change to indicate
the total PAWS duration [PAW S and recovery
periods] in hours and minutes, and the duration
of the first wash period in minutes. Press
"NEXT" to display the duration of the first
recovery period. Continue to press "NEXT" to
review the remaining wash and recovery
segments.

To change the duration of a wash or recovery
segment, press "NEXT" or "LAST" until the
appropriate segment is displayed, then press
"CHANGE CLEAR". When the display flashes,
press "MINUTE+" or "MINUTE-" until the
desired duration is displayed, then press
"SAVE ENTER" to retain that time. The total
PAWS duration is automatically updated.
To change additional segments, repeat the
above procedure.

When all segments have been set, press
"RETURN CLOCK" to return to Normal Display.
If no key is pressed for thir ty [30] seconds, the
panel will automatically return to Normal
Display.

c. Setting The Fire Delay
To change the duration of the fire delay cycle
press "PAWS" to enter the PAWS Review
mode. Press "NEXT" to review all of the
PAWS segments. After the final PAWS
segment, press "NEXT" again and the display
will read "FIRE DELAY" and its duration. Press
"CHANGE CLEAR" and the display will begin to
flash. Press "MINUTE+" and/or "MINUTE-"
until the correct duration is displayed. Press

14

"SAVE ENTER" to retain that time. Press
"RETURN CLOCK" to return to Normal Display.

d. Reviewing The Daily Event Schedule
The Daily Event Schedule is a program which
will automatically turn the fans on and off
and/or initiate the PAWS up to four [4] times
each day. Each day may be different from
another or it may be programmed to stay off for
the entire day. To review the Daily Event
Schedule, press "CHECK". The display will
show "CHECK MODE SELECTED" and then
indicate the first program m ed event of that day.
If there are no events program med for that day,
it will display the next programmed event. If
there are entries in the Daily Event Schedule,
press "NEXT" to see the next event and/or
press "LAST" to see the previous event. Press
"RETURN CLOCK" to return to Normal Display.
If no key is pressed for thirty [30] seconds the
display will automatically change to Normal
Display.

e. Changing The Daily Event Schedule
In order to make initial entires in the Daily
Event Schedule or change existing entries,
press "PROGRAM DAY". The display will
show "PROGRAM MODE SELECTED" then
ask which day's events are to be changed.
Press "DAY+" and/or "DAY-" to select the
desired day, then press "SAVE ENTER". If no
events are programm ed to occur that day, the
display will indicate "FAN ON UNPROG". If
events are programmed for the day selected,
that day's first event will be displayed. If an
event other than the one being displayed is to
be entered or changed, press "NEXT" until the
correct event is displayed. Press "CHANGE
CLEAR".

NOTE: WHEN AN EVENT IS CHANGED, ALL
EVENTS WHICH ARE SCHEDULED TO OCCUR
ON THAT DAY AFTER THE EVENT BEING
CHANGED ARE ERASED.

The time will begin to flash. Press "HOUR+"
and/or "HOUR-" to select the desired hour.
Press "MINUTE+" and/or "MINUTE-" to select
the desired minute. W hen the correct time is
displayed, press "SAVE ENTER". Press
"NEXT" to access the next event.

NOTE: A "FAN ON" EVENT MUST BE FOL LOWED
BY A "FAN OFF" EVENT.

Repeat the programming procedure indicated
above. When you have completed
programming the events for that day, press

"RETURN CLOCK" to return to Normal Display.
If no key is pressed for thir ty [30] seconds, the
display will automatically return for Normal
Display.

To program Daily Event Schedules for
additional days, particularly if they are different
from the schedule already program med, repeat
the previous steps.

f. Repeating The Daily Event Schedule
If you wish to repeat the Daily Event Schedule
from one day to another, press "REPEAT
DAY". The display will show "REPEAT MODE
SELECTED", then ask which day's Daily Event
Schedule is to be repeated. Select the
intended day by pressing "DAY+" and/or "DAY-

". When the proper day is displayed, press
"SAVE ENTER". The display will then ask on

which day that Daily Event Schedule is to be
repeated. Press "DAY+" and/or "DAY-" until
the proper day is displayed, then press "SAVE
ENTER". The display will acknowledge that the
schedule has been copied, then return to the
starting Repeat Day display. Continue as
outlined above to repeat additional Daily Event
Schedules.

NOTE: IF A DAY HAS ALREADY BEEN
PROGRAMMED FOR A DAILY EVENT SCHEDULE,
THE ORIGINAL WILL BE ERASED AND
REPLACED BY THE REPEAT SCHEDULE.

When you are finished repeating Daily Event
Schedules, press "RETURN CLOCK" to return
to Normal Display. If no key is pressed for
thirty [30] seconds, the display will return to
Normal Display, automatically.

g. Holiday Feature
To temporarily suspend a programmed Daily
Event Schedule for a particular day during the
upcoming seven [7] day period, press
"HOLIDAY". The display will show the status of
the current day. Select the day's Daily Event
Schedule which you wish to suspend [make a
Holiday] by pressing "DAY+" and/or "DAY-".
Press "CHANGE CLEAR" to make that day a
holiday. Press "DAY+" and/or "DAY-" to select
additional Holidays press "RETURN CLOCK" to
return to Normal Display. If no key is pressed
for thirty [30] seconds, the display will
automatically return to Normal Display. After
the Holiday passes, the Daily Event Schedule
will resume norm ally. The Manual Controls will
operate normally during a Holiday.

15

h. Fan On During Recovery
The operator can choose to have the fan on
during PAWS recovery periods or remain off.
To have the fan come on dur ing re cover y, push
down the right side of switch number one of the
selector switch. To have the fan remain off
during recovery, push down the left side of
switch number one of the s elector switch. [see
fig. 19]

i. Power Loss
In the event of a power loss the clock stops but
the PAWS and the Daily Event Schedule are
retained for up to six [6] months.

j. Last Command Indicator
In the Normal Display, the last digit of the top
row indicates the last command put into the
microprocessor.
The letters used are:
L = Power Loss
C = Clock or Program Change
P = Programmed Daily Event

Schedule Command

M = Manual fan or PAWS Command
H = Holiday in progress

LAST
DAY OF AM/PM COMMAND
WEEK TIME INDICATOR INDICATOR

   

FRI 06:45 PM M
FAN OFF/WASH OFF

PAWS NORMAL DISPLAY

fig. 17B

PAWS

Programming Keypad
k. Diagnostic LED Indicators
Because of the use of s olid state relay circuits,
a conventional voltmeter m ay not give reliable
readings as regards to the operation of the
various inputs and outputs. To aid in
troubleshooting, diagnostic LED indicators
have been built into the left-hand side of the
Input/Output Board.
They are shown below.

D-1 Green
Illuminates when the number one wash
output is energized.
D-2 Green
Illuminates when the number two wash
output is energized.
D-3 Green
Illuminates when the number three wash
output is energized.
D-4 Green
Illuminates when the number four wash
output is energized.
D-5 Green
Illuminates when the number five wash
output is energized.
D-6 Green
Illuminates when the number six wash
output is energized.
D-7 Green
Illuminates when the number seven wash
output is energuzed.
D-8 Green
Illuminates when the number eight wash
output is energized.
D-9 Green
Illumintates when the detergent pump
output is energized.
D-10 Green
Illuminates when the PAWS Alarm Horn
output is energized.
D-11 Green
Illuminates when the ventilator fan
output is energized.
D-18 Red
Illuminates when the manual pull station
circuit is in the normal postion.
D-20 Green
Illuminates when the PAWS supervised
valve is open.
D-21 Red
Illumintes when the ventilator automatic fire
detection circuit is activated.
D-32 Red
Glows when the battery circuit is charging.
D-35 Red
Glows when the detergent level is low.

16

17

l. Detergent Pump and Tank
Terminals No. 23 and 24 of AVTEC terminal
strip supply 120vac power to the detergent
pump during the Wash Cycle[s]. The pump
does not run during the Fire Cycle nor when
the detergent level is below the bottom of the
probe.

To start the flow of detergent, press the Pump
Prime Switch while the PAW S panel is not in a
wash cycle [no pressure on the outlet side of
the pump]. Hold the Pump Prim e Switch until
there is no air in the suction line of the pum p or
in the pump head itself. Once there is a solid
column of detergent from the tank through the
pump, no further action [except to fill the
detergent tank] should be required.

Detergent pumps are factory preset according to the

chart in fig. no. 15. This is a generalized guide;
settings may vary depending on water temperature
and pressure, detergent type and concentration,
grease load and PAWS duration.

VII. VENTILATOR FEATURES AND ACCESSORIES

A. Baffle Filter Ventilators [AF Models]

These type of ventilators have removable filters
which extracts and collects grease in a
receptacle.

1.Filter Installation [Refer to fig. 20]
Grease extractor f ilters are installed by sliding
them into the upper slot and then lowering
them into the grease trough slot as shown in
the drawing below.

Terminals No. 21 and 22 of AVTEC terminal
strip are low voltage [20vdc, 2ma] connections
for the detergent level probe. The probe
should be installed in the detergent container
so that it is above the top of the detergent
pump inlet strainer. It
is intended to prevent air from entering the
pump and notify the operator when it is tim e to
refill or replace the detergent tank . The probe
rods may be cut to facilitate a neat and
effective installation. [See fig. no. 9]

fig. 20

The filters are removed for cleaning by
reversing the procedure.

NOTE: The filters must be installed with the
baffles running vertically and with the handles
facing toward the capture area.

2.Grease Receptacles
Grease receptacles are located at one each
of each ventilator section. These must be
cleaned out periodically. The frequency of
this cleaning is dependent upon the type of
equipment used beneath the ventilator and
the duration of its use.
It is suggested that initially the grease
receptacles be emptied daily.

B. Modular Grease Extractors [AX Models]

These type ventilators have removable
extractor modules which extracts grease
contaminants which collects in a grease
receptacle at each end of the ventilator
section.

1. Grease Extractor Module Installation

18

[Refer to fig. 21]

Grease extractor modules are installed
by sliding the top [narrow] part of the
module into the upper retaining slot and
then lowering the bottom part of the
module into the grease trough slot.

fig. 21

NOTE: Handle faces towards capture area.

2. Grease Receptacles
Grease receptacles are located at each
end of each ventilator section. These
must be cleaned out periodically. The
frequency of this cleaning is dependent
upon the type of equipment used beneath
the ventilator and the duration of its use.
It is suggested that initially the grease
receptacles be emptied daily.

C. Auto Wash Grease Extractors [AW
Models]

These type ventilators have an automatic
wash cycle which requires only occasional
wiping down of inside grease extractor.

1. Grease Extraction Chamber
The front panel is hinged to facilitate
access to the nozzles and grease
extraction baffles.
[Refer to fig.22]

ventilator section to hold the front panel
open.

2. Spray Nozzles
Spray nozzles for hot water wash and
cold water mist are protected from
clogging by wye-strainers located in the
plumbing enclosure. However, scale and
contaminants will acc umulate in time and
these will require occasional cleaning to
assure proper wash down and spray
distribution. A paper clip or other pointed
object should be used to scrape
contaminants from the nozzles.

D. Air Adjustment Baffle [Refer to fig. 23]

Some grease extractor models may be
equipped with air adjustment baffles at the
exhaust intake slot. These baffles may be
adjusted to increase or decrease the intake
slot, according to the cfm desired or required
for varying pieces of cooking equipment
underneath. The length of the baffles varies
according to project design specifications and
conditions. The standard opening of nominal 3"
yields approximately 250 cfm/linear ft. and is
used for most c ooking appliances. Air flow may
be reduced to a low as 150 cfm/linear ft. for
ovens, steamers, etc. depending on local job
conditions. Adjusting the slot to nominal 1-3/4"
opening will yield approximately 150 cfm/linear
ft.

The Thrift Island Series ventilators uses only
one grease extraction cham ber and is designed
for 250-270 cfm/linear ft. on the cooking side
and 150 cfm/linear ft. on the oven/steamer side.
These units are provided with air adjustment
baffles to "fine-tune" the balance of air from
each side, and to change air velocity as job
conditions dictate.

fig. 22
To open, turn all front panel latches
clockwise to the open [unlatched] position
and swing the bottom of the front panel out.
"Kickstands" are provided at eac h end of the

fig. 23

19

To adjust air intake slot, turn nuts to loosen,
move air adjustment baffles up or down until
the desired slot opening is obtained, and tighten
nuts.

E. Fire Dampers

1. Fusible Link Type
Some ducts are protected by fire dampers
which are activated by a fusible link rated at
360°F exhaust and 286°F supply When this
temperature is exceeded, the fusible link
melts allowing the fire damper to fall closed.
This linkage should be inspected and the
fusible links r eplaced annually. Fusible links
in the exhaust duct collar are readily
accessible by removing the baffle filters
[Models AF] or grease extractor modules
[Models AX]. [Refer to fig. 20 and 24] An
access plate is provided for access [supply]
duct collar for all models.

F. After the tem perature has dropped below
300°F, the damper can be res et and opened
by pushing the damper reset arm toward the
plenum until it latches.
If the fusible link has melted, it must be
replaced before the damper c an be reset. An
access plate is provided.

When the dam per is c losed m anually or if the
fusible link melts and causes the damper to
close, the fan and auto wash down are not
affected.

When the damper closes due to ac tivation of
the thermoswitch, the fan[s] will shut OFF and
the auto wash will actuate.

F. Air Make-Up [Supply] Plenums

Ventilators may be supplied with four [4]
different Air-Make-up plenums. Air is
controlled by grill registers or a special E-Z
Breeze perforated panel.

1. Grill Registers [Refer to fig. 25]
Grill registers are located for external
discharge or both internal and external
discharge. Internal register have fixed
louvers for proper "Short Cycle" of air.
External registers have four-way louvers for
adjusting direction of air flow to suit job
requirements. Grill registers have opposing
blade dampers located on the rear of the

fig. 24
Electro-Mechanical Type [Refer to fig. 24]
Some ducts are protected by fire dampers
which are activated by heat sensitive
thermoswitches located near the duct inlet.
These switches close electrically at
temperatures above 300° F and activate a
solenoid which releases the damper, and
energizes a relay which activates the plenum
auto wash/fire extinguishing spray and
deactivates the fan. In the event of a loss of
power, the damper assem bly also contains a
fusible link, set at 360°F.

The damper can be manually closed by
pulling down on the red knob at the end of the
damper reset arm and allowing it to swing
away from the plenum.

If the damper has been activated by
excessive temperature, it cannot be reset
until the temperature has dropped below 300°

register. The airflow may be adjusted by
turning the damper adjustment screwhead
located just behind the louvers as shown in
fig. 25.

fig. 25

2. E-Z Breeze [Refer to fig. 26]
The E-Z Breeze plenum is specially designed
to slow the velocity of the supply air to
minimize the energy costs incurred for
tempering the air. The f ront perforated panel
is removable for cleaning. Screws are
provided to secure the panel in place after
cleaning.

20

3. Slot-Type Internal Air Make-Up
Hoods provided with "Short-Cycle" type air
make-up only are supplied with a slot which is
designed to direct the air along the top of the
hood and into the exhaust plenum inlet. T he
volume of air can be regulated through the
use of a combination balancing damper and
fire damper located on top of the air m ak e-up
plenum. [Refer to fig. 24]

G.Auto Wash

Plenum wash down is a feature of the Energy
Aire Ventilator which eliminates the need to
frequently clean the grease extraction area.
The wash down cycle normally occurs
immediately after the cooking period and
does not occur while the fans are ON. A
water/detergent mixture is sprayed from a
series of nozzles to remove accumulated
grease and grime which flows out through the
drain. A vacuum breaker/check valve must
be installed upstream of the detergent
injection point [and a minimum of 6" higher
than the ventilator inlet] to prevent detergent
from backflowing into the building water
supply. [Refer to fig. 14]. Hot water should
be at 120°F and pressure must be between
20 psig and 40 psig flow. The duration of the
wash down cycle is adjustable and will vary
depending of length of cooking cycle, type of
cooking equipment used, concentration of
detergent, water pressure and temperature,
among other cons iderations. See Sec. VI, b.,
"Setting the PAWS", for instructions.

**Note: See Page 28 cut sheet for detergent

information.

H.Cold Water Mist [Optional]

To aid in extracting particulates from the
exhausted air and to aid in cooling the
exhaust, a cold water m ist option is available.
This is especially useful with charbroilers.
Cold water mist is a fine spray within the

fig. 26

plenum area which runs whenever the fans
are ON. This com- plements the baffle
system on Energy Aire Systems and does not
replace the wash down feature. Water
pressure should be between 30-40 psig flow.

I. Lights

VIII. PERIODIC MAINTENANCE

A.Baffle Filters

Filters should be removed and c leaned at least
weekly, depending on hours of operation.
Filters may be cleaned by soaking in a strong
detergent solution, or running thru a
dishwasher. W hen r eplacing, m ak e sur e filter s
and handles are running vertically, and filters
are seated properly, refer to Sec. VII, A.1, pg.

15.

B.Modular Grease Extractors

Modules should be removed and cleaned at
least weekly, depending on hours of operation.
Modules may be cleaned with a brush and a
strong detergent solution, or run thru the
dishwasher. When replacing modules, make
sure they are seated properly, refer to Sec. VII,
B.1, pg. 16.

C.Grease Trough

Should be checked weekly for grease build up,
and cleaned with strong detergent, if
necessary.

21

1. Surface Mounted - Incandescent
To replace the bulb unscrew the globe.
Fixture will accept bulbs up to a maximum of
100 watts. Screw the bulb into the socket
and then proceed to screw the globe tightly
in position. Be sure that the inner silicone
gasket is in place before installing the globe

2. Recessed - Incandescent
To replace the bulb, loosen screws which
retain diffuser panel. Diffuser panel is
attached to housing with a cable to prevent it
from falling or becoming lost. Fixture will
accept bulbs up to a maximum of 150 watts.

3. Recessed - Fluorescent
To replace bulbs, unscrew diffuser panel.
The diffuser is attached to a housing with a
cable to prevent it from falling or being lost.
Two [2] bulbs are required for each fixture.

Fixture Size

[nominal] Bulb Size

24" [2] F20T12TS
36" [2] F30T12RS
48" [2] F40T12RS

D. Grease Collection Receptacle

Should be emptied at least once a day, and
cleaned daily with a strong detergent.

E. Hood Canopy

1. Inside hood canopy should be wiped
down as needed. The area at the exhaus t
intake openings should be wiped down daily.

2. Inspect inside of extraction chamber at
least monthly, to insure proper c leaning and
that the trough is free of foreign matter.

F. Detergent System

1. Detergent tank should be checked at
least weekly; and cleaned every six months.
Always keep cover on tight to prevent
spillage and evaporation.

2. A colloid type detergent, is recommended
due to its non-caustic, non-toxic,
biodegradable characteristics. It will not
damage the rubber or synthetic parts of the
pumping system. AVTEC recommends
using EVAC Detergent. Available thru your
local Service Agents or call Factory. See
page 28 for more information.

3. All fittings should be checked for air
tightness at least monthly.

4. Foot check valve should be cleaned every
six months.

G. Fusible Link Replacement

1. Blade Type
Exhaust damper fusible links are rated at
350°F [P/N 306-0000] and Air Make-up
damper fusible links are rated at 286°F [P/N
306-0005]. Fusible links shall be replac ed at
least annually per NFPA 96, 8-2.1.2. New
"S" hooks [P/N 306-0002] should be used
whenever the fusible links are replaced.

[Refer to fig. 27]

Cable tension can be adjusted by moving the
eye-bolts in and out to ensure that the
damper is fully open.

fig. 27

2. Curtain Type
When make-up air is brought directly into
the capture area a fire dam per is required at
the duct collar. The curtain damper is
equipped with a 212°F fusible link [P/N 306­0006]. Fusible links shall be replaced at
least annually per NFPA 96, 8-2.1.2. New
clover hooks [P/N 306-0007] should be
installed whenever the fusible links are
replaced. These links are replaced by
unfolding the retaining strap and removing
the clover hook and fusible link as a unit.
Be careful to hold the curtain damper in
place as a spring will try to pull it closed.

[Refer to fig. 28]

fig. 28

22

IX. PARTS LIST

A. PAWS PANEL - ELECTRICAL

ITEM NO. AVTEC PART NO. DESCRIPTION

1 112-0301 Fuse Block Bracket
2 200-1018 Terminal Brass Screws
3 200-1019 Terminal Trac
4 200-1020 End Stop for 200-1018
5 206-0005 Fuse [SC-15]
6 206-0112 Fuse Block [Holder]
7 407-1252 Low Level Sensor [Detergent] PC Board
8 407-1300 Flush Toggle Switch

9 407-1417 Pull Station [Yellow]
10 412-0300 Sonalert Horn
11 412-0322 PAWS Assembly Model P10 & P20
12 412-0323 Output Term for Converting MAF/PAWS Assembly
13 412-0324 Output Relay for Converting MAF/PAWS Assembly
14 412-0330 PAWS Faceplate w/slot Silkscreen/Acrylic
15 490-0331 PAWS Faceplate no slot Silkscreen/Acrylic
16 490-1172 Detergent Probe Cut to Length

B. VCW PANEL - ELECTRICAL

ITEM NO. AVTEC PART NO. DESCRIPTION

1 200-1026 Terminal Block Section

2 200-1028 Terminal Section End Stop

3 405-1140 Push Button w/Black Cap, Start Fan

4 405-1141 Push Button w/Red Cap, Start Wash

5 405-1142 Normally Open Contact Block

[For part no. 405-1140 & 405-1141]
6 407-1300 Light Switch [20a]
7 407-1307 Time Delay Timer [5 hr]
8 407-1414 Agastat Timer Relay
9 407-1417 Fire Switch [Pull Station]

10 407-1420 Relay Socket [For part no. 407-1421]
11 407-1421 Omnetics Timer Relay

C. PAWS/VCW PANEL - PLUMBING

ITEM NO. AVTEC PART NO. DESCRIPTION

1 131-0108 5 gal. Detergent Tank
2 131-0112 2 gal. Detergent Tank
3 407-1101 1/2" Water Solenoid
4 407-1102 3/4" Water Solenoid
5 407-1103 1" Water Solenoid
6 407-1104 1-1/4" Water Solenoid
7 407-1105 1-1/2" Water Solenoid
8 600-0302 1/2" Ball Valve
9 600-0303 3/4" Ball Valve

10 600-0304 1" Ball Valve
11 600-0305 1-1/4" Ball Valve
12 600-0306 1-1/2" Ball Valve
13 600-0453 3/4" Supervised Shut-Off Valve [Water]
14 600-0454 1" Supervised Shut-Off Valve [Water]
15 600-0455 1-1/4" Supervised Shut-Off Valve [Water]

23

16 600-0456 1-1/2" Supervised Shut-Off Valve [Water]
17 600-1100 1/2" Check Valve, Br.
18 600-1101 3/4" Check Valve, Br.
19 600-1102 1" Check Valve, Br.
20 600-1103 3/8" Check Valve, Br.
21 600-1104 1/4" Check Valve, Br.
22 600-1105 1-1/4" Check Valve, Br.
23 600-1107 1-1/2" Check Valve, Br.
24 601-0051 1/2" Wye [Line] Strainer, B.I.
25 601-0052 3/4" Wye [Line] Strainer, B.I.
26 601-0053 1" Wye [Line] Strainer, B.I.
27 601-0054 1-1/4" Wye [Line] Strainer, B.I.
28 601-0055 1-1/2" Wye [Line] Strainer, B.I.
29 601-0103 1/2" Shock Arrestor
30 601-0153 1/2" Press/Temp. Gauge
31 601-0212 1/2" Vacuum Breaker, Br.
32 601-0213 3/4" Vacuum Breaker, Br.
33 601-0214 1" Vacuum Breaker, Br.
34 601-0215 1-1/4" Vacuum Breaker, Br.
35 601-0216 1-1/2" Vacuum Breaker, Br.
36 602-1403 3/4" Pressure Reducing Valve
37 602-1404 1" Pressure Reducing Valve
38 602-1405 1-1/4" Pressure Reducing Valve
39 602-1406 1-1/2" Pressure Reducing Valve, Br.
40 602-2000 Single Head Diaphragm Pump [Detergent]
41 602-2009 Foot Valve
42 602-2014 Check Anti-Syphon Valve

D. EVAC DETERGENT

ITEM NO. PART NO. DESCRIPTION

1 602-3001 EVAC 1 Gallon
2 602-3005 EVAC 5 Gallon
3 602-3030 EVAC 30 Gallon
4 602-3055 EVAC 55 Gallon

E. ELECTRO - MECHANICAL DAMPER

ITEM NO. AVTEC PART NO. DESCRIPTION

1 119-0406 1-1/2" S/S Spring
2 119-0600 Damper Spring [Right]
3 119-0601 Damper Spring [Left]
4 119-0603 Solenoid Return Spring
5 129-0202 Red Knob [Damper]
6 200-1026 Terminal Section
7 200-1028 Terminal Section End Stop
8 407-1283 Fire Relay [Damper]

9 407-1282 Damper Solenoid
10 407-1419
11 411-0226 Electro-Mechanical Damper Instruction [Label]
12 205-0001 Convolution Boot
13 190-0404 AW Damper Linkage Assembly Complete
14 306-0000
15 306-0003 Stainless Steel Cable
16 306-0004 Crimp Sleeve (For S.S. Cable)

300°F, Normally Open Thermoswitch

350°F, Fusible Link

24

17 144-0901 Small Linkage (Between 306-0000 and 144-0902)
18 144-0902 Large LInkage

F. FUSIBLE LINK DAMPER

ITEM NO. AVTEC PART NO. DESCRIPTION

1 120-7000 10" x 10" Balancing Damper
2 120-7001 16" x 10" Balancing Damper
3 120-7002 20" x 10" Balancing Damper
4 120-7003 30" x 10" Balancing Damper
5 120-7004 40" x 10" Balancing Damper
6 120-7100 10" x 10" Combo Balancing and Fire Damper
7 120-7101 16" x 10" Combo Balancing and Fire Damper
8 120-7102 20" x 10" Combo Balancing and Fire Damper

9 120-7103 30" x 10" Combo Balancing and Fire Damper
10 120-7104 40" x 10" Combo Balancing and Fire Damper
11 306-0000
12 306-0001 Eye Bolt 3/16" x 2" - 10 - 24
13 306-0002 "S" Hook
14 306-0003 Stainless Steel Cable
15 306-0004 Crimp Sleeve [for S/S Cable]
16 306-0005
17 306-0006
18 306-0007 Clover Hook [Curtain Damper]

Fusible Link 350°F

Fusible Link 286°F
Fusible Link 212°F

G. HOOD CANOPY

ITEM NO. AVTEC PART NO. DESCRIPTION

1 119-0211 Paddle Latch
2 119-0413 "Vice Action" Panel Latch
3 190-0380 16" x 16" S/S Filter
4 190-0383 20" x 25" S/S Filter
5 190-0398 20" x 20" S/S Filter
6 190-0400 20" x 20" Aluminum Filter
7 190-0401 16" x 16" Aluminum Filter
8 190-0405 Hanger Bracket [Ventilator]

9 190-0410 16" x 20" S/S Filter
10 190-0412 16" x 20" Aluminum Filter
11 190-0413 20" x 16" Aluminum Filter
12 190-0416 20" x 25" Aluminum Filter
13 190-0832 20" x 16" S/S Filter
14 412-0103 Incandescent Work Light Globe
15 412-0104 Incandescent Work Light Cage
16 412-0105 Incandescent Work Light Base
17 412-0115 3'-0" Fluorescent Work Light
18 412-0116 4'-0" Fluorescent Work Light
19 412-0117 2'-0" Fluorescent Work Light
20 412-0118 Recessed Incandescent Work Light
21 608-0410 Spray Nozzle, Br. No. 1/8 B-0.5-0.5W

[Cold Water Mist]
22 608-0412 Spray Nozzle, Br. No. 1/8 GG-2.8W ]Water
23 608-0413 Spray Nozzle, Br. No. 1/8 GGA-1.5W ]Wash
24 609-0050 2” Expandable Coupler

25

25 609-0051 2” PVC XMPT Adapter
26 609-0052 2” Male PVC Fitting

26

Cleaner/Degreaser

For Exhaust Ventilator Auto-wash Cleaner

Cleaner/Degreaser

Advantages

UNIQUE, POWERFUL CLEANING FORMULA

• Tough enough to break down the worst oil and

grease in your water wash system…leaving it
Super Clean!

• Reduces the need for using environmentally

harmful chemicals

• Non-caustic and non-abrasive

• Concentrated formula gives you more cleaning

power for your money!

• Compatible with bio-enzyme wastewater treatment

products like TDW Grease Treatment

• Exclusive factory detergent pump warranty

Formulas at your fingertips

In order to achieve maximum economy in the
maintenance of your water-wash system,

Cleaner/Degreaser

some suggested dilutions:

COOKING TYPE DILUTION SUGGESTED

Medium daily cooking
Heavy daily cooking

(No Charbroilers/solid
fuel use)

Heavy daily cooking
Charbroiling Solid fuel
cooking

Note: There are multiple combinations of dilution, wash
cycle length, frequency of washes, water temperature,
and mechanical options possible for most systems.
Consult experienced distributor/service agents for
information regarding the best program for your
institution.

can be diluted. Following are

1 part EVAC : 2 parts water
1 part EVAC : 1 part water

Use Concentrate

EVAC

• Can be used in all water-wash ventilators.

Certified Biodegradable

EVAC Cleaner/Degreaser is certified biodegradable by
Scientific Certification Systems (SCS), an independent
organization. SCS has established some of the
nation’s strictest standards for environmental
performance.

AVAILABLE IN

1/2 GALLON, 1 GALLON, 5 GALLON,

30 GALLON AND 55 GALLON DRUMS

Ask your Authorized Service Agency for these part numbers

602-3000 1/2 GALLON
602-3001 1 GALLON
602-3005 5 GALLON
602-3030 30 GALLON
602-3055 55 GALLON

27

Project Name

AIR MOVEMENT RECORDINGS

(Supplement to Ventil ator Installation/Start Up Report)

Readings Taken by:

A. ENERGY AIRE HOODS - EXHAUST

1. Reading No. 1, 2, and 3 are taken at the front
middle, and back of the intake slot.

2. For 8 foot hood sections and less, take three
[3] readings at each of three [3] locations:
1 foot from each end, and one [1] reading in
the middle.

3. For hood sections over 8 feet in length, take
three [3] readings at each of four [4] locations:
1 foot from each end, and two [2] readings in

4. B. FILTER HOODS - EXHAUST

1. Take Reading No. 1, 2, and 3 on vertical
centerlines.

2. Refer to A.2, 3.
C. SUPPLY PLENUM

1. Reading No. 1 only is used.

2. Take readings on horizontal centerline of grill.

3. Refer to A.2, 3, but only one reading at each
location

the middle.

AVTEC INDUSTRIES INC. 120 KENDALL POINT DR. OSWEGO, IL 60543-8898 [630] 851-4800

form no. 14018 1998 AVTEC Industries inc.

28

29

CALCULATING AND RECORDING AIR MOVEMENT

1.) Cubic feet per minute or CFM'S is the total area multiplied by the average feet per

minute.

A: CFM

AREA FPM

B: CFM = AREA x AVG. FPM

FPM = CFM ÷ AREA
AREA = CFM ÷ FPM

2.) AREA is the length of the opening multiplied by the width in inches. Divide the total

by 144 to get the total square feet (area).

EXHAUST

A: Filter Hoods - Area = *Square Feet x Quantity of Filters

* 16 x 20 Filter = 1.75 Square Feet
* 20 x 20 Filter = 2.25 Square Feet

B: Extractor Type Hoods - Area = **Square Feet x Quantity of Modules

16” Standard Module

**Low Volume Extractor w/3" Slot = .32352 Square Feet
**High Volume Extractor w/4" Slot = .43136 Square Feet

9” Standard Module

**Low Volume Extractor w/3" Slot = .1855 Square Feet
**High Volume Extractor w/4" Slot = .2473 Square Feet

C: Water Wash Hood - Area = Length of Slot x Width of Slot in inches and

divided by 144 for square feet.

SUPPLY

A: Perforated Supply Air Panels - Square Feet of Panel x .4 = Area.

B: Register Type Supply Air Panels - Square Feet of Panel x .7 = Area.

30

NOTE: AVTEC INDUSTRIES recognizes readings taken at the surface and not at the duct opening.
Please refer to the Air Movement Recording Worksheet for proper location(s) to take readings.

WARRANTY-

AVTEC INDUSTRIES INC. warrants to the original purchaser for use of our products, that any part thereof which

proves to be defective in material or workmanship under normal use within one year from date of installation, will

be replaced free of charge, labor to replace such part is warranted for one year from installation. All warranty labor

to be performed during regular working hours, with no overtime premium.

All Warranty service must be authorized by the factory and be performed by AVTEC's authorized service

personnel.

This Warranty is limited to the United States and Canada.

This Warranty does not apply to any damage resulting from shipping, improper installation, accident, unauthorized

alteration, local codes not previously brought to the attention of AVTEC, misuse, or abuse; and does not cover

loss of food, other products or damage to equipment or property resulting from mechanical or electrical failure.

AVTEC neither makes nor assumes and does not authorize any other person to assume any other obligation or

liability in connection with its products other than that covered in this Warranty.

FOR THE NAME AND LOCATION OF THE NEAREST

AVTEC SERVICE AGENCY, CALL OR WRITE TO:

AVTEC INDUSTRIES INC.
120 KENDALL POINT DR.
OSWEGO, IL 60543-8898

630-851-4800

LOCAL SERVICE AGENCY

orm no. 14019 rev 02/01 1998 Avtec Industries Inc.

31