LBC Bakery Equipment LRO-1 Service Manual

MODELS LRO-1 and LRO-2
Roll-in Rack Ovens
Installation, Service and Parts Manual
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. POST IN A PROMINENT LOCATION: INSTRUCTIONS TO BE FOLLOWED IN THE EVENT THAT USER SMELLS GAS. THIS INFORMATION SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER. AS A MINIMUM, TURN OFF THE GAS AND CALL YOUR GAS COMPANY AND YOUR AUTHORIZED SERVICE AGENT. EVACUATE ALL PERSONNEL FROM THE AREA.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT.
This LBC oven was manufactured to rigid standards. The oven is ETL listed as a unit, and meets applicable safety standards.
A) The responsibility of the manufacturer recommendations for proper operation and maintenance.
B) All operations, maintenance and repair of this or any oven must be performed by properly trained and
qualified personnel, and all such operations, maintenance and repair must be performed in a diligent manner. It is the responsibility of the owner/operator person coming into contact with either the subject units or the output (product, exhaust or otherwise) of the subject units. It is the responsibility of the owner/operator installed and operated in accordance with OSHA Standard 1910.263.
C) A regular periodic program of cleaning, inspection and maintenance must be established and
comprehensive maintenance records maintained. It is the sole responsibility of the owner/operator establish, schedule and enforce the frequency and scope of these programs in keeping with recommended practice and with due consideration given to actual operating conditions. For suggested cleaning schedule visit our Website @ www.lbcbakery.com Equipment Cleaning under Operation and Programming Manuals, or call LBC @ 1-888-722-5686 to have one faxed.
D) This oven must be ope rated within limits, which will not exceed its working limits. It is the responsibility
of the user to operate this oven in accordance with the rules and limits described in this manual and the published product specification sheet, and in accordance with the directions and instructions of the owner/operator of the oven or employer, and in accordance with applicable federal, state and local laws and ordinances.
is to supply suitable, comprehensive instructions and
to insure proper training and diligence of any
to ensure that the subject units are
to
First click on Manuals, then click on
2 REV.06/2011
Table of Contents
Specification Sheets……………………………………………………….4 Conditions of Installation…………………………………………………8 Receiving…………………………………………………………….8 Gas Connection…………………………………………………….9 Hood Ventilation……………………………………………………9 Drains………………………………………………………………..10 Water Connection…………………………………………………10 Codes and Ordinances…………………………………………..10 Electrical Requirements………………………………………….10 Ventilation Equipment…………………………………………………….11 Floor Consideration……………………………………………………….14 Illustrated Description…………………………………………………….18 Electrical Connection (gas)………………………………………………21 Electrical Connection (electric)………………………………………….22 Start-up & Inspection……………………………………………………...23 Cleaning and Maintenance……………………………………………….28 Air Shutter Adjustments…………………………………………………..29 Illustrated Parts Lists………………………………………………………31 Schematics…………………………………………………………………..40 Limited Warranty……………………………………………………………48
3 REV.06/2011
BakerSeries Electric Roll-in Rack Oven
MODEL: LRO-1E
INSTALLATION REQUIREMENT
1/2" NP T Water Connec tion
Oven ships one-piece but c an be split f or movement through 36" opening
1/2 " E MT Connection to E1 = 120 VAC 1-Phase for c ontrols and lift and r otate, 1 1/4" EMT Connection to E2 208-240-480 VAC 3- P hase for heat and motor cir cuit
.
3/4" NP T Vented drain
. .
8" Round vent collar ( consult loc al codes for installat ion require ments) Ventilation Fan not included
OPTI ONS & ACCESSORIES
Si ngl e Oven Racks Manual Bac k-up Correctiona l P ackage
Split Oven
Model
LRO-1E 2500 2900
Height x Width x
Depth*
104.5" x 55.0" x 88.2"
C learance from
combustible
surfaces**
Sides 0" Back 0"
Weight
F reight Class
Actual Shipping
70
Shippi ng Dimensions = 113" L x 62" W x 64" H Ships In One Crate
* 112" c ei l ing clearanc e required for tip-up ** Nonc om busti bl e floor support ed by Noncom bus tible st ruc t ure
No Buried Utilities
Electrical Requirements 3-Phase Ovens
Model
LRO-1E
Connection
E-1 E-2
3-Phase
Voltage
120 VA C / 60 Hz
208 VAC 60Hz 240 VA C / 60 Hz 480 VA C / 60 Hz
Total
kW
1.5 12 15 20
40.8* 113 145 175
40.8* 98 125 175
40.8* 49 65 175
FLA
Min Ci rcui t
Ampacity
Maximum
Breaker
Water
1/2" NPT
(9 GPM @ 40
PSI)
Drain
3/4" NP T
(210F, 1 GPM
max)
* 39 k W Heat L oad, 1. 8kW Motor Load
IMPORTANT: Your local water conditions may damage your LBC applia nce.
damage and may void your w arranty. E nsure that your w ater supply meets these minimum water quality specification.
Parameter Parameter
Alkalini ty Magnesium Alumi num pH Calcium Sodium Free C h lorine Residual Total Hardness
Unit Value Unit Value
ppm 22 ppm 0.65 ppb 17 s.u. 8.5 ppm 3.3 ppm 8.5 ppm 0.6 ppm 11.9
Fai lure to properly treat w ater ma y result in
4 REV.06/2011
MODEL
LRO-2E
"
BakerSeries Electric Roll-in Rack Oven
:
INSTALLATION REQUI REMENT
Oven ships two-piec e for movement through 36"
1/2" NP T Water Connect ion
opening Two el ec trical connec tions 1/ 2" E MT f or E 1 = 12 0
VAC 1-Phase for controls and lift and rotate,1 1/4" EMT f o r E 2 208- 240- 480 VAC 3-Phase for hea t and motor circ uit
.
3/4" NP T Vented drain
.
8" Round vent c ol l ar (consult local codes for
.
ins tall ation requi rem ents ) Vent i l ator not included
OPTI ONS & ACCESSORIES
Si ngl e and Doubl e Oven Rack s Manual B ack-up Correctional Pac kage
DRAIN Connection
D
99.75
72.25
104.88
86.00
5.50
5.81
ELECTRICAL
Connections
1.50
E1
55.00
36.00
WATER Connection
W
75.51
V
VENT
Connection
Ø 8.00
62.00
108.25
Front View
Model
LRO-2E 3380 4380
Height x Width x
Depth*
04.8" x 72.25" x 108.25
C learance from
Sides 0" Back 0"
Side View
combustible
surfaces**
Weight
Actual Shipping
Plan View
Freight Class
70
* 112" ceil i ng cl earance requi red for t i p-up * * Noncom bust i bl e floor supported by Noncom busitble St ruct ure
No Buried Utilities
Ships in Two Crates 113" L X 70" W x 46" H (eac h)
Electrical Requi rements
Min Ci rcui t
Amps
15 20 185 200 165 175
85 100
Model
LRO-2E
Connection
E1
Vol tage Total kW
120 VA C / 60 Hz
208 VAC/60Hz 240 VAC/60Hz 53.8* (3- P H) 480 VAC/60Hz
1.5 ( 1- P H)
53.8* (3-PH)
53.8* (3-PH)
* 52 kW Heat Load, 1. 8 k W M otor Load
IMPORTANT: Your local water conditions may damage your LBC appliance.
result in damage and may void your warra nty. Ensure that your water supply meets these minimum water quality
specification.
Parameter
Alkalinity Magnesium Aluminum pH Calcium Sodium Free Chlori ne Resi dual Total Hardness
Unit Value Unit Value
ppm 22 ppm 0 .65 ppb 17 s.u. 8.5 ppm 3.3 ppm 8.5 ppm 0.6 ppm 11.9
Parameter
Maximum
Breaker
Water
1/2" NPT
(9 GPM @ 40
PSI)
Failure to proper ly t r e at water may
Drain
3/4" NP T
(210F, 1 GPM
max)
5 REV.06/2011
a
Act
1" NPT
C
Baker Seri es G as Roll-in [Si ngle] Rack O ven
INSTALLATION REQUIREMENT
Oven ships one-piece but c an be split for movement t hr ough 36" opening
Two electrical connections 1/2" E MT for E1 = 120 VAC 1-Phase for controls and lift and rotate,1 1/4" EMT f or E2 208- 240- 480 VAC 3-Phase for circ ulat ion blower
OP T IONS & ACCESSORI ES
Si ngle Oven Racks Manual Bac k -up Cont rol LP G
99.75
104.88
86.00
1" NP T Gas Connecti o n 5" - 14" W. C.
.
1/2" NPT W ater Connection
.
3/4" NPT Vent ed drai n
.
8" Round vent col l ar (cons ul t local codes for in stal l ation
.
requirements ) Roof ve nt not included Spec i fy natural gas or LP gas
.
88.16
MODEL: LRO-1G
Single Phase Blower Motor
5.50
5.81
44.00
1.50
E1 E2
G
GAS & ELEC.
Connections
VENT
Connection
27.50
V
DRAIN Connection
D
W
WATER Connection
Ø 8.00
88.20
55.00
Front View
Model
LRO-1G 2500 2900
Height x Width x
Depth*
104.5" x 55.0" x 88.2"
C learance from
combustible
surfaces**
Si des 0" B ack 0"
Side View
51.00
Weight
u
Ship
Plan View
Freig ht Class
70
Sh i p s One -Crate 113" L x 62" W x 64" H
* 112" cei l i ng clearance required for t i p-up ** Noncombusti bl e floor support ed by Nonc om bust i bl e struct ure
No Buried Utilities
El ectri cal Requi rem ents
Model
LRO-1G
Voltage
Total kW
Connection Ph
E-1
E-2
120 VAC / 60Hz
208 VAC/60Hz 240 VAC/60Hz 480 VAC/60Hz
1.5
1.8
1.8
1.8
Minimum
Circuit
Size
1 15 Amps 20 Amps 3 15 Amps 20 Amps 3 15 Amps 20 Amps 3 15 Amps 20 Amps
Maximum
Breaker
Size
Water
1/2" NPT
(9 GPM @ 40
PSI)
Drain
3/4" NPT
(210F, 1
GPM max)
IMPORTANT: Your local water conditions may damage your LBC appliance.
may r esult in damage and may v oid your warr ant y. E nsure that y our water supply meets these minimum
water qualit y specification.
Parameter Parameter
Alkalinity Magnes ium Aluminum pH Calcium Free Chlorine Residual Total Hardnes s
Unit Value Unit Value
ppm 22 ppm 0.65 ppb 17 s.u. 8.5 ppm 3.3 ppm 8.5
Sodium
ppm 0.6 ppm 11.9
Failure to properly treat water
Gas
175,000
BTU /Hr
5" - 14"
W
6 REV.06/2011
Act
V
1" NPT
C
Ba ker Ser ies Gas Rol l-in [ Doubl e ] Rac k O ve n
INSTALLATION REQUI REMENT
Oven ships two-piec e for movement through 36" opening
Two 1/2" EMT elect r ic al c onnections E1 = 120 VAC 1-Phase for controls and lift and rotate, E2 208-240 VAC 3- P hase for c irc ulation blower
OPTI ONS & ACCESSORIES
. . . .
MODEL: LRO-2G
1" NPT gas connection 5" - 14" W. C. 1/2" NP T Water Connect ion 3/4" NP T Vented drain
8" Round vent c ol l ar (consult local codes for ins tall ation requi rem ents ) Ex trac t ion ve nt i l ator not included
Singl e and Double Oven Rack s Natural or LP Gas 1-PH Bl ower Mot or Correctional Package Manual Bac k-up Cont rol
DRAIN Connection
D
99.75
72.25
104.88
86.00
5.50
5.81
ELECTRICAL
Connections
E1 E2
1.50
G
GAS
Connection
55.00
36.00
WATER Connection
W
86.50
V
VENT
Connection
Ø 8.00
62.00
108.25
Front View
Model
LRO-2G 3380 4380
Height x Width x
Depth*
104.8" x 72.25" x
108.25"
C learance from
Sides 0" Back 0"
Side View
combustible
surfaces**
Weight
u
Shipping
Plan View
Freight Class
70
* 112" ceil i ng cl earance requi red for t i p-up * * Noncom bust i bl e floor supported by Noncom bust i bl e st ruct ure
No Buried Utilities
Ships In Two Crates 113" L x 70" W x 46" H (each)
Elect rical Requirement s
Minimum
Vol tage Total kW
Model
LRO-2G
IMPORTANT: Y our local water conditions may damage your LBC appliance.
water may result in damage and may void y our war r anty. Ensure t hat your water supply meets these
Parameter
Alkalinity Magnesium Aluminum pH Calcium Sodium Free Chlori ne Resi dual Tot al Hardness
Connection Ph
E-1
E-2
120 VA C / 60 Hz
208 VAC/60Hz 240 VAC/60Hz
480 VAC/60Hz
minimum water quality specification.
Unit Value Unit
1.5
1.8
1.8
1.8
Parameter
ppm 22 ppm 0.65 ppb 17 s.u. 8.5 ppm 3.3 ppm 8.5 ppm 0.6 ppm 11.9
Circuit
Size
1 15 Amp 20 A m p 3 15 Amp 20 A m p 3 15 Amp 20 A m p
3 15 Amp 20 A m p
Maximum
Breaker
Size
Failure t o pr operly tr eat
Water Drain
1/2" NPT
(9 GPM @
40 PSI)
3/4" NP T
(210F, 1
GPM max)
alue
290,000
BTU/Hr
5" -14"
Gas
W.
7 REV.06/2011
Conditions of Installation
LBC Bakery Equipment, Inc. shall, for a fee contingent on site location and provided that the conditions of installation are met, provide a factory authorized service agency to installation the LBC Roll-in Rack Oven(s) Before LBC Bakery Equipment, Inc. or its authorized agent arrives; the job site must be ready for the installation. If the installation site is not properly prepared or if there are construction delays the customer shall be responsible for all expenses incurred during this delay. All expenses resulting from job delay or extension, for reasons beyond the control of LBC Bakery Equipment Inc., will be the responsibility of the customer Installation shall be conducted during normal business hours. This installation is for a single trip. Start-up and training are not included
.
.
CODES and ORDINANCES
IN ALL CASES, THE ELCTRICAL, MECHANICAL, UTILITY AND VENTILATION CONNECTIONS MUST MEET ALL
FEDERAL, STATE AND LOCAL CODES OR ORDINANCES.
It is the customer’s responsibility to:
1. Secure all required permits and meet local code requirements.
2. Ensure that the installation site is cleared and ready for installation before the authorized installer arrives on site. The site shall be smooth and level.
3. Provide all utilities and hook-ups: gas, electrical, water and drains within five (5) feet of the installation location per the specifications provided by LBC Bakery Equipment.
4. Provide licensed trades person to make the final utility connections.
5. Provide licensed trades person to install refrigeration for Retarder Proofers.
6. Supply and install a roof mounted kitchen ventilator that provides;
Single Rack Ovens at the hood collar; 1,520 FPM @ 530 CFM, .6” W.C Double Rack Ovens at the hood collar; 2,300 FPM @ 800 CFM, .6” W.C.
7. Provide adequate ventilation, including ducts vent hoods and associated roof penetrations. The quantity of supplied air shall be adequate to prevent negative pressure in the bakery or kitchen from exceeding
0.02 inches water column (W.C.). As a general rule, make up air volume should be in the area or 85% to 90% of all bakery/kitchen exhaust.
8. Remove all trash, crates, etc. resulting from the installation.
9. Provide any peripheral sheet metal work required by local codes or otherwise to bridge the gaps between the ovens and the walls that are caused by wall protrusions.
LBC Roll-in Rack Ovens:
RECEIVING:
8 REV.06/2011
.
The LBC LRO-2 oven is made of semi-modular construction. The oven ships in two (2) crates and the estimated weight of 4,380 lbs. The LRO-1 oven ships in one (1) crate at an estimated weight of 2,900 lbs. To receive a shipment of this size, it is necessary to have a fork lift available and a standard loading/unloading dock for off-load ing (or other suitable means to remove the crates from the truck).
Once uncrated the LRO-2 oven halves can be moved through a minimum thirty-six inch (36”) move the oven into position.
Once uncrated the LRO-1 oven can be moved through a minimum fifty-five inch (55”)
door opening
oven into position. A minimum nine and one-half feet (9’-6”) of unobstructed ceiling height shall be required
to stand the oven up.
A one inch (1”) gas supply must be installed to the gas burner, which preliminarily must be brought to within five (5) feet of the oven (consult specification sheet for oven supply location).
A shut-off valve located at the burner will be supplied with the LBC Oven. State, county, city or other local codes may require additional safety precautions. Consult your local utility for proper meter size and code requirements prior to installation.
The LBC Model LRO BakerSeries the oven hood and the gas flue. It is required that all customer-supplied ducting meet all state and local code requirements. The vent system may be engineered in any configuration above the oven provided that these conditions are met:
clear door opening
with nine feet (9’) of clear space on either side of the opening to
clear
with nine feet (9’) of clear space on either side of the opening to move the
GAS CONNECTIONS
Single Rack Ovens: 175,000 BTU/HR
i. Natural; 5” - 14” supply, 3” @ manifold (approx.)
ii. L.P. 10” - 14” supply. 8” @ manifold (approx.)
Double Rack Ovens; 290,000 BTU/HR
i. Natural; 5” – 14” supply, 3” @ manifold (approx.)
ii. L.P. 10” – 14” supply, 6” @ manifold (approx.)
See Oven Data Plate and Test Tag on Gas Valve for Proper Manifold Settings.
OVEN HOOD VENTILATION:
®
ovens utilize a single point eight inch (8”) exhaust for both
Single Rack Ovens at the hood collar; 1,520 FPM @ 530 CFM, .06” W.C Double Rack Ovens at the hood collar; 2,300 FPM @ 800 CFM, .06” W.C.
:
9 REV.06/2011
It is the customer’s responsibility to supply all materials and labor required to adequately v ent their ovens. The ovens are supplied with a terminal to integrate the roof vent to the oven so that the roof vent is activated when the oven power is on. Type I hood does not include fire suppression system. This system must be installed and tested by a licensed and insured fire suppression company in accordance with all State, and local codes. Consult your local building department for code requirements.
DRAINS:
A three quarter (3/4) inch vented drain is required for this oven. The facility drain should be located within five (5) feet of the oven drain (consult specification sheet for oven drain location).
WATER CONNECTIONS:
A one half inch (1/2”) copper cold water supply rated at 9 GPM, 40 psi minimum is required for this oven. The water line should be brought to within five feet (5’) preliminarily of the oven site. (consult specification sheet for the location of the water connection). Water treatment may be required; it is strongly suggested that the supply water be tested and treated for impurities.
CODES and ORDINANCES
In all cases, the electrical, mechanical, utility and ventilation connections MUST
meet all Federal, State and local codes and or ordinances. LBC is not responsible
for these utility connections.
ELECTRICAL REQUIREMENTS:
Gas Heated Ovens: Gas heated ovens require a five (5) wire pull, three (3) phase service with a neutral and
ground for 208/240 VAC. A separate 120 VAC service will be required for 480 VAC three (3) phase ovens. All electrical service should preliminarily be brought within five feet (5’) of the oven.
See spec sheets for KW loads and circuit sizes
Electrically Heated Ovens: Electrically heated ovens require a five (5) wire pull, three (3) phase service with a neutral and
ground for 208/240 VAC. A separate 120 VAC service will be required for 480 VAC three (3)
10 REV.06/2011
phase ovens. All electrical service should preliminarily be brought within five feet (5’) of the oven.
See spec sheets for KW loads and circuit sizes
Ventilation Equipment for LBC Rack Ovens
LBC rack ovens are designed with a hood that can be fitted to comply with NFPA96 standards for kitchen ventilation. These ovens also have products of combustion and steam vented into them on a continuous basis, therefore requiring that ventilation equipment be operating while the oven is on. The oven is equipped with a power connection to operate the roof-top ventilator motor (motor is not supplied with the oven).
The following is a list of recommended The listed parts may be ordered at www.grainger.com.
applications, but some instances will require a design by a qualified and licensed mechanical engineer. Check local codes for requirements.
LRO-1G, LRO-1E Ovens:
Roof-top Ventilator, Grainger pt. No. 4HZ37, 10 ½”, 115 volt;
Curb Kit, Grainger pt. No. 4HX54;
Grease Box (if required), Grainger pt. No. 4HX78;
Hinge Kit (if required), Grainger pt. No. 4HX79
LRO-2G, LRO-2E Ovens:
Roof-top Ventilator, Grainger pt. No. 4HZ41, 12 1/4”, 115 volt;
Curb Kit, Grainger pt. No. 4HX55;
Grease Box (if required), Grainger pt. No. 4HX78;
Hinge Kit (if required), Grainger pt. No. 4HX79
If Type II venting is permitted, in most cases, 8” diameter type “B” vent pipe can be used. Check with local requirements. If Type I venting is required, fully welded, and insulated piping will be required. See local codes or the Uniform Mechanical Code, Chapter 20.
Please Note: Required airflow for LRO1: 1520 FPM @ 530 CFM; LRO2: 2300 FPM @ 800 CFM. A negative draw of 0.6” w.c. is needed to close the air pressure switch; without this, the oven burners will not light.
though not exclusive
These parts will work in most
items for the roof-top ventilator.
11 REV.06/2011
12 REV.06/2011
13 REV.06/2011
Select an installation location:
TO REDUCE THE RISK OF FIRE, THE APPLIANCE IS TO BE MOUNTED ON FLOORS OF NON-COMBUSTIBLE CONSTRUCTION WITH NONCOMBUSTABLE FLOORING, SURFACE FINISH AND WITH NO COMBUSTIBLE MATERIAL AGAINST THE UNDERSIDE THEREOF, OR ON NONCOMBUSTABLE SLABS OR ARCHES HAVING NO COMBUSTIBLE MATERIAL AGAINST THE UNDERSIDE. SUCH CONSTRUCTION SHALL EXTEND A MINIMUM OF 12-INCHES BEYOND THE EQUIPMENT ON ALL SIDES
The oven surfaces have been rated at zero clearance to combustibles. A clearance of 24” is recommended above the oven for servicing. Allow adequate room at the front of the oven to load and unload racks, this area should remain free and clear of
all obstructions.
14 REV.06/2011
CAUTION
CAUTION
CAUTION
WARNING
WARNING
NOTICE
NOTICE
INSTALLATION MUST CONFORM WITH LOCAL CODES OR IN THE ABSENCE OF LOCAL CODES THE NATIONAL FUEL GAS CODE, ANSIZ223.11996.
THIS APPLIANCE, WHEN INSTALLED, MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES, OR IN THE ABSENCE OF LOCAL CODES, WITH THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70-1996.
FOR INSTALLATION IN CANADA THE INSTALLATION MUST BE IN ACCORDANCE WITH CAN/CGA-B149.1&2 OF THE INSTALLATION CODE, AND LOCAL CODES WHERE APPLICABLE. ALL ELECTRIC WIRING MUST BE IN ACCORDANCE WITH THE CURRENT CANADIAN ELECTRICAL CODE, C22.1 PART 1. GROUNDING THIS APPLIANCE MUST CONFORM TO CANADIAN ELECTRICAL CODE, CSA C22.2.
INSTALLATION OF THE UNIT MUST BE DONE BY PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND /OR DAMAGE TO EQUIPMENT. UNIT MUST BE INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.
DO NOT ALLOW ANY PART OF YOUR BODY TO BE UNDER THE OVEN DURING THE LIFTING PROCESS. KEEP EVERYONE CLEAR FORM THE OVEN IF IT SHOULD FALL.
No other exhaust systems may be connected to this system. Do not try to vent or exhaust another appliance into this hood.
Do not allow more than 14 inches pressure to be applied to the gas valve at any time.
15 REV.06/2011
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