APW Wyott GHP-W User manual

R
INSTALLATION AND OPERATING INSTRUCTIONS
P/N #88359-00 2/06
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this manual for the life of the equipment. For
Warranty Service and/orParts, thisinformation is required.
ModelNumber Serial Number DatePurchased
Gas Foodwarmer
Gas Hot Plate
MODEL:
GWW (Convertible)
MODELS:
GHP-W (Convertible)
GHP-H (Convertible)
WARNING: Improper installation, operation, service or maintenance can cause property
damage, injury or death. Read and understand these instructions thoroughly before
positioning, installing, maintaining or servicing this equipment.
!!
FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance. !!
APW WYOTT Foodservice Equipment Company
P.O. Box 1829
Cheyenne, WY 82003
[phone] Phone [phone] Toll Free
[phone] Fax www.apwwyott.com
1

Installation and start-up should be performed by a qualified installer who thoroughly read, understands and
followsthese instructions.
If you have questions concerning the installation, operation, maintenance or service of this product, write
Technical Service Department APW Wyott Foodservice Equipment Company, P.O. Box 1829, Cheyenne,
WY82003.
Before installing and operating this equipment be sure everyone involved in its operation is fully trained and
is aware of all precautions. Accidents and problems can result by a failure to follow fundamental rules and
precautions.
The following words and symbols, found in this manual, alert you to hazards to the operator, service
personnel or the equipment.Thewords are defined as follows.
SAFETY PRECAUTIONS
Shut off gas flow through the appliance before cleaningor servicing unit.
!
!WARNING:
This symbol refers to a potential hazard or unsafe practice, which could result
in serious injury or death.
!
!DANGER:
This symbol warns of imminent hazard which will result in serious injury or
death.
!
!CAUTION:
This symbol refers to a potential hazard or unsafe practice, which may result in
minor or moderate injuryor product or property damage.
!
!NOTICE:
This symbol refers to information that needs special attention or must be fully
understoodeven thoughnot dangerous.
GENERAL INFORMATION
THIS MANUAL SHOULD BE RETAINED FOR FUTURE REFERENCE
CAUTION: These models are designed, built, and sold for commercial use. If these
models are positioned so the general public can use the equipment, make sure that
cautions, warnings, and operating instructions are clearly posted near each unit so that
anyone using the equipment will use it correctly and not injure themselves or harm the
equipment.
!
!
!!
WARNING: A factory authorized agent should handle all maintenance and repair. Before
doing any maintenanceor repair, contactAPW Wyott.
!
!
WARNING: Improper installation, adjustment, alteration, service or maintenance can
cause property damage, injury or death. Read installation, operating and maintenance
instructions thoroughlybefore installing or servicing this equipment.
!
!WARNING:
For your safety do not store or use gasoline or other flammable vapors or
liquids in the vicinity of this or any other appliance. Keep the area free and clear of
combustibles.(SeeANZI Z83.14B,1991)
!
!
NOTICE: The unit when installed, must be electrically groundedand comply with local codes, or in
the absence of local codes, with the national electrical code ANSI/NFPA70- latest edition.
Canadian installation must comply with CSA-STANDARD C.22.2 Number 0 M1982 General
Requirements-CanadianElectricalCode Part II, 109-M1981-CommercialCookingAppliances.
2

GAS PRESSURE
The appliance and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testingof that system at test pressuresin excess of ½ psi (3.45 kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½
psi (3.45 kPa).
Congratulations on your purchase of APW Wyott commercial cooking or refrigeration equipment. APW
Wyott takes pride in the design and quality of our products. When used as intended and with proper care
and maintenance, you will experience years of reliable operation from this equipment. To ensure best
results, it is important that you read and followthe instructions in thismanual carefully.
!
!
NOTICE: Local codes regarding installation vary greatly from one area to another. The
National Fire Protection Association, Inc., states in its NFPA96 latest edition that local
codes are Authority Having Jurisdiction when it comes to requirement for installation of
equipment.Therefore, installation should complywith all local codes.
!
!NOTICE:
This product is intendedfor commercial use only. Not for householduse.
!
!NOTICE:
Instructions to be followed if anyonesmells gas should be posted in a prominent
place.Thesemay be obtained fromthe gassupplier.
!
WARNING: Check the data plate on this unit before installation. Connectthe unit only to the voltage
andfrequencylisted on the dataplate.Connectonlyto 1or3 phaseas listedon the dataplate.
!
!
WARNING: IMPROPER GROUNDING COULD RESULT IN ELECTRICAL SHOCK. This
appliance is equipped with a three-prong (grounded) plug for your protection against shock hazard
and should be plugged directly into a properly grounded three-prong receptacle. Do not cut or
removethegroundingprongfromthisplug.
!
!
!
WARNING: Disconnect device from electrical power supply and place a Tag Out-Lockout on the
powerplug,indicatingthatyouare workingonthecircuit.
WARNING: Install per the spacing requirements listed in the installation section of this manual. We
strongly recommend having a competent professional install the equipment.A licensed electrician
should make the electrical connections and connect power to the unit. Local codes should always
be used when connecting these units to electrical power. In the absence of local codes, use the
latestversionof theNationalElectricalCode.
!
!
!!
WARNING: - SHOCKHAZARD Donotopenanypanelsthat requirethe use of tools.
!
!
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read the installation, operating and maintenance instructions
thoroughlybeforeinstallingor servicingthisequipment.
The countertop foodwarmer provides countertop warming capabilities. This unit incorporates a 4,000
BTU/Hr burner for efficient operation.The countertop hot plate,model GHP-W provides countertop heating
& cooking capabilities. This unit incorporates two 12,000 BTU/Hr burners for fast and even cooking &
heating.
Disconnect the powersupply to the appliance beforecleaning or servicingunit.
Do not use this unit in the event of an electricaloutage.
3

TABLE OF CONTENTS:
ITEM PAGE
GAS HOT PLATE
GAS FOODWARMER
ITEM PAGE
Safety Precautions 2
General Information 2
Specifications 4 Lighting Instructions 7
Conversion 8
Lighting Instructions 5 Replacement Parts Lists 9
Maintenance 6
LOCATION OF DATA PLATE
The data plate for the gas hot plate is located on the back side of the front panel.
IMMEDIATELY INSPECT FOR SHIPPING DAMAGE
All containers should be examined for damage before and during unloading. The freight carrier has
assumed responsibility for its safe transit and delivery. If equipment is received damaged, either apparent
or concealed, a claim mustbe made with the delivering carrier.
A) Apparent damage or loss must be noted on the freight bill at the time of delivery. It must then be signed
by the carrier representative (Driver). If this is not done, the carrier may refuse the claim. The carrier can
supplythe necessaryforms.
B) Concealed damage or loss if not apparent until after equipment is uncrated, a request for inspection
must be made to the carrier within 15 days. The carrier should arrange an inspection. Be certain to hold all
contents and packaging material.
Installationand start-up should be performed by a qualified installer who thoroughly read, understands and
followsthese instruction.
If you have questions concerning the installation, operation, maintenance or service of this product, write
Technical Service Department APW Wyott Foodservice Equipment Company, P.O. Box 1829, Cheyenne,
WY82003.
Conversion 7
Replacement Parts List 7
General Installation Instructions 5 Maintenance 8
Warranty 11
SPECIFICATIONS
GAS FOODWARMER AND HOT PLATES
Gas:
Dimensions:
Capacity:
These gas units are designed for countertop operation. They are used for holding products at serving
temperatureand producingevenlycookedproducts.
GWW 1 - 4,000 BTU/Hr. burner with 1 standing pilot. Convertible to natural or propane gas.
GHP-W 2 - 12,000 BTU/Hr. burners with 2 standing pilots. Convertibleto natural or propane gas.
GHP-H 2 - 20,000 BTU/Hr. burners with 1 standing pilot. Convertible to natural or propane gas.
GWW 14" W x 24-3/4" Lx 16" H
GHP-W 12" W x 24" Lx 11-3/8" H
GHP-H 14" W x 24" Lx 14-3/4" H
GWW 22 Qts.Accepts 12" x 20" or fractionalpans.
4

GENERAL INSTALLATION INSTRUCTIONS
Ensuregas supplyand gas type,as shownon unitnameplateagree.
Unit installation must conform with the National Fuel Gas Code, ANSI Z223.1-1996, the National Gas
Installation Code, CAN/CGA-B149.1, or the Propane Installation Code, CAN/CGA-B149.2 as applicable
and in accordancewith local codes.
Screw legs into the permanently fastenednuts on the four corners of the unit and tighten by hand. Level the
unit by turning the adjustment screw at the bottom of each leg. Do not slide unit with legs mounted, lift if
necessary to move unit.
Pipe gas supply to unit.
Pipe threading compoundmust be resistant to the action of liquefied petroleumgases.
DO NOT use an open flame to check for leaks. Check all gas piping for leaks with a soap
andwater solutionbefore operatingunit.
These units are suitable for installation on combustibleand noncombustiblesurfaces.
Noncombustibleclearances:
0" sides 0" rear
Caution:
Combustibleclearances:
3" sides 3" rear
GAS FOODWARMER
LIGHTING INSTRUCTIONS
Lighting instructionsare located on the inside of the frontpanel.
Access to the manifold andpilot are gained through thefront panel.
1. Turn on main gas supply to unit, on-off valve located behindthe unit.
2. Turn the burner control knob to "OFF" position. Open the front panel and wait at least 5 minutes to
allow any gas which may haveaccumulated in the burnercompartment to escape.
3. Depress red button on the pilot safety valve and light through observation hole in manifold baffle.
Keep red button on pilot safety depressed for at least 1 minutes after pilot has lit. If pilot does not
lightrepeat this step.
4. To adjust the pilot flame, rotate knob next to the red button. Turning the knob, clockwise increases
the pilot flame.Aproperly sizedpilot should be 1/2" to 3/4" long.
5. These units are equipped with factory preset regulator with an outlet pressure of 4" W.C.(water
column) for natural gas and 10" W.C. for propane gas supply, and should require no further
adjustment.
Since the burner is lit from constantly burning pilot, turn knob to "HI" to put the unit in operation; then
adjust to any desired positionbetween "LO" and "HI".
Mainburner air supply:
For efficient burner operation, a proper balance of gas volume and primary air supply must be
maintained which will result in complete combustion. Insufficient air supply results in a yellow
streaming flame. Primary air supply is controlledby an air shutter on the frontof the burner.
Loosen the screws on the front of the burner, and adjust the air shutter to just eliminate the yellow
tips of the burnerflame. Lock the air shutter in place by tighteningthe screws.
Lighting pilot burner:
Lighting main burner:
5

All burners are lit from constantly burning pilots. Turning the thermostat to the desired temperature
is all that is required to put the unitin service.
Do not permit fans to blow directly at the unit. Wherever possible, avoid open windows next to the
units' sides or back. Avoid walltype fans which create air cross-currents within a room.
It is also necessary that sufficient air should be allowed to enter the room to compensate for the
amount of air removed by any ventilating system. Otherwise, a subnormal atmospheric pressure
will occur, affectingoperation and causingundesirableworking conditions.
Aproperly designed and installed hood will act as the heart of the ventilating system for the room or
area in which the unit is installed, and will leave the unit independentof changing draft conditions.
MAINTENANCE
Extended Shutdown:
Daily:
Caution: The foodwarmer is for wet operation only. Do not operate the unit dry. If the
unit runs dry, follow these steps:
Weekly:
Turn the manual shutoff valve to "OFF"; turn all control knobs to the "OFF" position and shut off the
pilotflame by turningthe adjustmentscrewon the pilotvalve.
The entire flue duct opening,located on the rear of the unit, mustbe left uncovered
1. This apoliance is not a cooking device. It is intended to keep hot cooked foods at serving
temperatures.
a. Turn the control knob to "OFF".
b. Wait until the pan well is cool enoughto be handled. Do not pour water in the hot pan well.
c. removepanwelland thoroughlywashtheinternal bottomsurfaceper weekly cleaninginstructions.
d. replacepanwell,add waterand resumenormal operation.
2. For proper operation, add approximately three quarts of water in the pan well. Check amount of
water daily, or after every four hoursof operation. Add water as necessary.
3. The pan well is not intended for use as a food container, but only to store water. Food to be kept
warm must be in separate containers.
4. Since the burner is lit from a constantly burning pilot, turn the control knob to "HI" to put the unit in
operation; then adjustto any desired position between"LO" and "HI".
5. Turn unit on about 15 to 20 minutes beforeuse.
6. Clean pan well and top surface daily. Clean unit regularly. Aclean unit looks nicer, lasts longer and
performsbetter.
Clean the pan wellthoroughly. If necessary, use steel wool on warm pan well. Adetergent may also
be used on the pan well to help clean it, but care must be taken to ensure that the detergent is
thoroughlyremoved.
6

Key P/N Description Quantity
1 31007-19 Pan well 1
2 820171-00 Bottom panel 1
3 20661-00 Pressure regulator(convertible) 1
4 20656-07 Pilot shutoff valve 1
5 20660-08 Manifold 1
6 20680-00 Burner valve 1
7 20688-62 Orifice spud #62 (natural gas) 1
8 20688-74 Orifice spud #74 (propane gas) 1
REPLACEMENT PARTS LIST
Key P/N Description Quantity
9 20658-15 Burner 1
10 820164-00 Burner support bracket 1
11 20661-53 Pilot 1
12 820168-01 Pilot bracket 1
13 820192-00 Pilot supply tubing 1
14 820183-00 Pilot shield 1
15 86321-00 Adjustable leg 4
16 87053-03 Knob 1
CONVERSION
For conversion from naturalgas to propane (L.P.)
This conversion shouldbe done before connectingthe unit to the gas supply.
1. Removethe knobsand front panel.
2. Removethe supplytubes thatgo betweenthevalves andthe orificefittings.
3. Remove the orifice fittings from the firebox. Change the orifices to the size recommended for
propane(L.P.).
4. Replacethe orificefittings intothe firebox.
5. Replacethe supplytubes betweenthe valvesand the orificesfittings.
6. With the unit on its back or side, reversethe plug in the pressure regulator. The marking on the plug,
facing out, should matchthe type of gas supply desired.
7. Replacethe frontpanel andknobs.
8. Continuewith theinstallation.
Manifold pressure should be checked after connecting to the gas supply. It should be 10 inches
(24.5 cm) water column for propane (L.P.). Leak test all joints.
If you have any questions or problems,contact your nearestAPW/Wyott ServiceRepresentative.
Note:
GAS HOT PLATE
LIGHTING INSTRUCTIONS
Lighting instructionsare located on the inside of the frontpanel.
Access to the manifold and pilot valves are gained through the front panel. Access to the pilot
burner is gained by removingthe top grate.
1. Turn all burners to the "OFF" position.
2. Turn on the main gas supply to the unit.
3. Light the pilot and adjust the pilotregulating valve to give a stable pilot flame.
4. If the pilot is out, turn all control knobs to the "OFF' position. Wait 5 minutes before attempting to
lightthe pilot.
5. To adjust the pilot flame, turn adjusting screw on the pilot valve so increase or decrease the size of
the pilot flame. Adjust until the pilot flame is approximately1/2" to 3/4" tall.
Since the burner is lit from a constantly burning pilot, turn the control knob to "HI" to put the unit into
operation; then adjustto any desired position between"LO" and "HI".
Lighting Pilot Burner:
Burner Ignition
7

Main Burner Air Supply:
For efficient burner operation, a proper balance of gas volume and primary air supply must be
maintained which will result in complete combustion. Insufficient air supply results in a yellow
streaming flame. Primary air supply is controlledby an air shutter onthe burner.
Loosen the screws on the front of the burner, and adjust the air shutter to eliminate the yellow on the
burner flame. Lock the air shutter in place by tighteningthe screws.
All burners are lit from constantly burning pilots, turning the control valve as desired is all that is
required to put the unit in service.
Do not permit fans to blow directly on the unit. Wherever possible, avoid open windows next to the
unit's sides or back. Avoid wall type fans whichcreate air cross-currents within the room.
It is also necessary that sufficient air should be allowed to enter the room to compensate for the
amount of air removed by any ventilating system. Otherwise, a subnormal atmosphere will occur,
adverselyaffectingoperationand causingundesirable workingconditions.
Aproperly designed and installed hood will act as the heart of the ventilating system for the room or
area in which the unit is installed, and will leave the unit independentof changing draft conditions.
All valves must be checked and lubricated periodically. Consult the authorized service
representative in your area.
MAINTENANCE
CONVERSION
Daily:
Weekly:
Thoroughlyclean splashback, sidesand front.
1. Clean unit thoroughly. Clean stainless steel or chromed surfaces with a damp cloth and polish with
a soft, dry cloth. A detergent may be used for cleaning. To remove discolorations, use a non-
abrasivecleaner.
2. To clean the bottom drip pan, remove the drip pan by reaching under the unit and lifting the rear of
the pan about one inch, slide the pan to the rear about one half inch, and dip the front end of the pan
free of the unit and slide pan forward between the front legs. To replace the pan, reverse this
procedure.
3. Burnerair shutteropenings mustbe kept clean.
4. Main burner ports must be kept clean. To clean burners, boil them in a strong solution of lye water
for 15 to 20 minutes. Then either brush with a wire brush or clean gas ports with a sharp-pointed
metal instrumentto insure open ports.
For conversion from naturalgas to propane (L.P.).
This conversion shouldbe done before connectingthe unit to the gas supply.
1. Removethe knobsand front panel.
8
!
!
CAUTION : Clean the regulator at least once a month. Make sure the vent opening is open and not
blocked in any way. Failure to do so will cause variations in pressure. Your unit will not function as
wellanditcouldshortenthelifeoftheproduct.

2. Removethe mainburners.
3. Removethe orifice fittingsfrom thevalves.
4. Replacethe orificefittings withthe size recommendedforpropane(L.P.).
5. Replacethe mainburners.
6. With the unit on its back or side, reverse the plug in the pressure regulator. The marking on the plug
while facing out should matchthe type of gas supplied.
7. Replacethe frontpanel andknobs.
8. Continuewith theinstallation.
Manifold pressure should be checked after the unit is connected to the gas supply. It should be 10
inches (25.4 cm) water columnfor (L.P.). Leak test all joints.
If you should have any questionsor problems, contact your nearestAPW/Wyott Service Representative.
Note:
GHP-W REPLACEMENT PARTS LIST
Key Part Number Description Quantity
1 820220-00 Top grate 1
2 820212-24 Drip pan 1
3 820674-12 Burner, front 1
4 20668-52 Orifice #52 (Natural) 2
5 20668-60 Orifice #60 (L.P) 2
6 20660-34 Gas manifold assembly 1
7 217074-00 Knob guard 2
8 87055-03 Knob 2
9 20680-00 Burner valve 2
10 20656-14 Pilot valve 2
11 820643-12 Drip pan, bottom 1
12 820675-12 Burner, rear 1
13 20656-12 Valve, manual 1
14 20661-00 Pressure regulator (Convertible) 1
1
2
3
45
6
7
89
10
11
12
13
14
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GHP-H REPLACEMENT PARTS LIST
Key Part Number Description Quantity
1 22016-01 Top grate 1
2 820212-24 Drip pan, top 1
3 820674-24 Burner, front 1
4 20668-44 Orifice #44 (Natural) 2
5 20688-55 Orifice #55 (L.P) 2
6 20660-34 Gas manifold assembly 1
7 217074-00 Knob guard 2
8 87055-03 Knob 2
9 20680-00 Burner valve 2
10 20656-14 Pilot valve 1
11 820643-00 Drip pan, bottom 1
12 820675-24 Burner, rear 1
13 86321-00 Legs, adjustable 4
14 20656-12 Valve, manual 1
15 20661-00 Pressure regulator (Convertible) 1
1
2
3
4
56
7
8
9
10
11
12
13
14
15
10