HeatStar JET20 Assembly instructions

— WHATTODOIFYOUSMELLGAS
 • OpenWindows
 • DO NOTtrytolightanyappliance.
 • DO NOTuseelectricalswitches.
 • DO NOTtouchanyelectricalswitch;donotuseanyphoneinyourbuilding.
•  Immediatelycallyourlocalgassupplier;followthegassupplier’sinstructions.
  (Installationandservicemustbeperformedbyaqualifiedinstaller,serviceagencyorthegassupplier.)
 • Ifyoucannotreachyourgassupplier,calltheFireDepartment.
FOR YOUR SAFETY:
-This heater is intended to be used as a direct gas fired radiant heater for the heating of poultry
confinement buildings. If you are considering using this product for any application other than its
intended use, then please contact Heatstar, Inc
- Donotstoreorusegasolineorotherflammablevaporsandliquidsinthevicinityofthisoranyotherappliance.
WARNING: Iftheinformationintheseinstructionsisnotfollowedexactly,afireorexplosionmayresultcausing
propertydamage,personalinjuryorlossoflife.
2017CB
Heatstar,IncGroup,Inc.,4560W.160THST.,CLEVELAND,OHIO44135•866-447-2194
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.
OPERATING INSTRUCTIONS
AND OWNER’S MANUAL
READ INSTRUCTIONS CAREFULLY: Read and follow all instructions.
Place instructions in a safe place for future reference. Do not allow anyone who
has not read these instructions to assemble, light, adjust or operate the heater.
Model#
by ENERCO
LANGUAGES INCLUDED
HEATSTAR JET SERIES
Poultry Confinement Buildings
Agricultural Buildings
•ENGLISH
JET20
JET25

2
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
SECTION 1:Introduction
HEATSTARAGmodelsarelow-cost,fieldassembledinfrared
heatersthatareeasytoinstallandrequireonlyminimal
maintenance.Theyaredesignedtoprovideyearsofeconomical
operationandtrouble-freeservice.
Checking Shipment
ChecktheshipmentagainsttheBillofLadingforshortages.
Also,checkforexternaldamagetocartons.Noteany
shortages,and/orexternaldamagetocartonsontheBillof
Ladinginthepresenceofthedeliverytrucker.Thedelivery
truckershouldacknowledgeanyshortagesordamageby
initializingthis“noted”BillofLading.Immediatelyreport
anyclaimsfordamagedmaterial,orshortagesthatwere
notevidentatthetimeofshipment,tothecarrierandyour
Heatstar,IncFactoryRepresentative.
Installer Responsibility
Allheatersandassociatedgaspipingshouldbeinstalledin
accordancewithapplicablespecificationsandthisinstallation
madeonlybyfirms(orindividuals)wellqualifiedinthistypeof
work.Consultlocalbuildinginspectors,FireMarshalsoryour
localHeatstar,IncFactoryRepresentativeforguidance.
HEATSTARAGheatersareinstalledonthebasisofinformation
giveninalayoutdrawing,whichtogetherwiththecitedcodes
andregulations,comprisethebasicinformationneededto
completetheinstallation.Theinstallermustfurnishallneeded
materialthatisnotfurnishedasstandardequipment,andit
ishisresponsibilitytoseethatsuchmaterials,aswellasthe
installationmethodsheusesresultinajobthatisworkmanlike
andincompliancewithallapplicablecodes.
Heatstar,IncFactoryRepresentativeshavehadtrainingand
experienceintheapplicationofthisequipmentandcanbe
calledonforsuggestionsaboutinstallationwhichcansave
materialandcost.
WARNING:
FIRE,BURN,INHALATION,ANDEXPLOSIONHAZARD.
KEEPSOLIDCOMBUSTIBLESSUCHASBUILDING
MATERIALS,PAPERORCARDBOARDASAFEDISTANCE
AWAYFROMTHEHEATERASRECOMMENDEDBYTHE
INSTRUCTIONS.NEVERUSETHEHEATERINSPACES
WHICHDOORMAYCONTAINVOLATILEORAIRBORNE
COMBUSTIBLES,ORPRODUCTSSUCHASGASOLINE,
SOLVENTS,PAINTTHINNER,DUSTPARTICLESOR
UNKNOWNCHEMICALS.
GENERAL HAZARD WARNING:
FAILURETOCOMPLYWITHTHEPRECAUTIONSAND
INSTRUCTIONSPROVIDEDWITHTHISHEATERCAN
RESULTINDEATH,SERIOUSBODILYINJURYAND
PROPERTYLOSSORDAMAGEFROMHAZARDSOF
FIRE,EXPLOSION,BURN,ASPHYXIATION,CARBON
MONOXIDEPOISONING,AND/ORELECTRICALSHOCK.
ONLYPERSONSWHOCANUNDERSTANDANDFOLLOW
THEINSTRUCTIONSSHOULDUSEORSERVICETHIS
HEATER.
IFYOUNEEDASSISTANCEORHEATERINFORMATION
SUCHASANINSTRUCTIONSMANUAL,LABELS,ETC.,
CONTACTTHEMANUFACTURER.
WARNING:
YOURSAFETYISIMPORTANTTOYOUANDTOOTHERS,
SOPLEASEREADTHESEINSTRUCTIONSBEFOREYOU
OPERATETHISHEATER.
CONTENTS
SECTION1INTRODUCTION.......................................................2
SECTION2PLANNING...............................................................3
SECTION3INSTALLATION&ASSEMBLY.....................................5
SECTION4EngineeringSpecifications.......................................8
SECTION 5VENTING/DUCTING…………………………………………8
SECTION6GASPIPING............................................................10
SECTION7WIRING..................................................................11
SECTION8OPERATIONMAINTENANCE...................................12
SECTION8TROUBLESHOOTING...............................................12
ACCESSORYPARTS...................................................................13
SECTION9REPLACEMENTPARTS............................................14
WARRANTYINFORMATION.....................................................16
WARNING:
The State of California requires the following warning:
COMBUSTIONBY-PRODUCTSPRODUCEDWHENUSING
THISPRODUCTCONTAINCARBONMONOXIDE,A
CHEMICALKNOWNTOTHESTATEOFCALIFORNIA
TOCAUSECANCERANDBIRTHDEFECTS(OROTHER
REPRODUCTIVEHARM).

3Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
SECTION 2: Planning
Thefollowingcodesandinstructionsshouldbefollowedwhen
planningtheinstallationofthisHEATSTARAGheater.Inadditionto
theseinstructions,thewarningsmustbecarefullyadheredtosince
improperinstallationmayleadtopropertydamage,injury,ordeath.
National Standards and Applicable
Codes
Gas Codes:
•Thetypeofgasappearingonthenameplatemustbethe
typeofgasused.Installationmustcomplywithlocalcodes
andrecommendationsofthelocalgascompany,andthe
NationalFuelGasCode,ANSIZ223.1–latestrevision,(same
asNFPABulletin54)(theNaturalGasandPropaneInstallation
Code,CSAB149.1)Canadaonly.
•Clearancebetweentheheateranditsventandadjacent
combustiblematerial(whichispartofthebuildingorits
contents)shallbemaintainedtoconformwiththeStandard
forInstallationofGasAppliancesandGasPiping,NFPA-54
/ANSIZ223.1–latestrevision,NationalFuelGasCode(the
NaturalGasandPropaneInstallationCode,CSAB149.1)
Canadaonly.
Hazardous Locations:
Wherethereisthepossibilityofexposuretocombustible
airbornematerialorvapor,consultthelocalFireMarshal,the
fireinsurancecarrierorotherauthoritiesforapprovalofthe
proposedinstallation.
Critical Considerations
ThisHEATSTARAGisasuspendedheater.Therefore,itsstability,
flexibility,andsafetyareveryimportant.Beforestartinginstallation,
besurethesystemcanmeetthefollowingrequirements.
• Maintainspecifiedclearancestocombustibles,andsafe
distancefromtheheat-sensitivematerial,equipmentand
workstations.
• Thestatedclearancestocombustiblesrepresentasurface
temperatureof90°F(30°C)aboveroomtemperature.Building
materialswithlowheattolerance(suchasplastic,vinyl
siding,canvas,etc.)maybesubjecttodegradationatlower
temperatures.Itistheinstallersresponsibilitytoassurethat
adjacentmaterialsareprotectedfromdegradation.
• Provideaccesstoburnersforservicing,preferableonboth
sides,aboveandbehindtheburnerforremoval.
• Alwaysobserveminimumclearancestocombustibleslocated
onpage4.
• Planlocationsupports(seeFigure2A-Bstartingonpage6).
• Theinstallationmustconformwithlocalbuildingcodesor
intheabsenceoflocalcodes,withtheNationalFuelGas
Code,ANSIZ223.1/NFPA54(theNaturalGasandPropane
InstallationCode,CSAB149.1)Canadaonly.
• Ifanexternalelectricalsourceisutilized,theheater,when
installed,mustbeelectricallygroundedinaccordancewith
theNationalElecticalCode,ANSI/NFPA70orcurrent
CanadianElectricalCode,CSAC22.1.
Installation Procedure
Takemaximumadvantageofthebuildingupperstructure,
beams,joists,purlins,etc.,fromwhichtosuspendtheheater.
Thereisnouniquesequenceforinstallationofthetubing.
On-siteobservationwillusuallyrevealalogicalsequence.
Begintheinstallationatthemostcriticaldimension.
Reflectorsandtubingcanbeinstalledasyoumovealong.
Carefullyadjustsystempitchateachpositiontolevelthe
heater.Pitchdownone-halfinchin20feet(awayfrom
burner).
DON’TPressuretestthegaslineusinghighpressure(greaterthan½
PSIG)withoutclosingthehigh-pressureshutoffcocks.Failure
todosowillresultindamagetotheburners.
DO Familiarizeyourselfwithlocalandnationalcodes.
 Developaplannedprocedurewhichwillconservematerial
andlaboronthejob.
 Checktoseethatallmaterialandequipmentisonthejob
beforestartinginstallation.
 Allowforthermalexpansionofthetubes.
 Installthegasconnectoronlyasshownininstructions(see
Figure14&15onpage10).
 Haveslipjointswhererequiredbetweenreflectorstokeep
themfrombucklingorcomingapart.
 Provide1sq.inchoffreeairopeningtoeach1,000BTU/hr.
ofheaterinput(butnotlessthan100sq.inches)inenclosed
spaces.Oneopeningshouldbewithin12inchesofthetop
andonewithin12inchesofthebottomoftheenclosure.

4
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
Clearances To Combustibles
TABLE 1:MinimumClearancestoCombustibles(UseFigure1asGuide)
Reflector Type Position HSJET20 HSJET25
Standard
Reflector
(Horizontal)
A
B
C
D
12 ”
36”
55”
36”
12 ”
36”
74 ”
36”
E72" 72"
Clearances To Combustibles
Figure 1: (RefertoTABLE1)
STANDARD REFLECTOR
D
A
C
WARNING:
FIRE OR EXPLOSION HAZARD
CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY OR DEATH.
Inallsituations,clearancestocombustiblesmustbemaintained.Failuretoobserveclearancestocombustiblesmayresultinproperty
damage,severeinjury,ordeath.
Cautionshouldbeusedwhenrunningthesystemnearcombustiblematerialssuchaswood,paper,rubber,etc.Considerationshouldbe
giventopartitions,storageracks,hoists,buildingconstruction,etc.
TABLE1givesminimumacceptableclearancestocombustibles.
E
B
ENDTUBEFLAPPER
OR
CAP
BACK

5Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
SECTION 3: Installation & Assembly
TUBECOUPLING(14612)
*USEDONJET25*
KEYFORTUBECOUPLING
(14616)*USEDONJET25*
TUBEHANGER
-3"Tube=14572
-3.5"Tube=14573
-4"Tube=14585P
JET20
•10'-3"ODAluminized(06454)
•10'-3.5ODSteel(06456)
JET20-TURBULATORBAFFLE7'(03444)
JET25-TURBULATORBAFFLE10'(03445)
REFLECTOR
-5'=00417A*JET25ONLY*
-10'=00418A
FLAPPER(14579)
BURNERBOX
JET25
•10'-3.5"ODAluminized(06455)
•10'-4"ODSteel(06456)
•5'-4"ODSteeL(06416)*NOFLANGE*
HEATEXCHANGERTUBE
VENTCAP(19041)
VENTADAPTER(14582)

6
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
Assembly Overview
20 ft. Exchanger length. 21 ft. - 4 in. Total Heater length. Five suspension points as indicated.
HANGER HANGER HANGER HANGER
10’ 2-1/2” 10’ 2-1/2”
STEEL 3.5”
2-1/2” OVERLAY TYP
(1) 7’ Turbulator SectionsALUMINIZED 3” Flapper
or
Vent Cap
Flange
Assembly Overview
25 ft. Exchanger length. 26 ft. - 4 in. Total Heater length. Six suspension points as indicated
10’ 2-1/2” 10’ 2-1/2” 5’
(1) 10’ Turbulator Section
HANGER HANGER HANGER HANGER
STEEL 4”
Flange
STEEL 4”
HANGER
Flapper
or
Vent Cap
Burner Housing
Mustalwaysbe
installedhorizontally.
Turbulator Assembly
Heatstar,IncnormallyshipsHeatstarAGheaterswith
turbulatorsassembledintoappropriatetubes.
Reflectors
Alternateoverlapasshown
onoverview.Lengthof
reflectorandamountof
overlapisindicated.
10'2-1/2"
Tube Coupling Assembly
Couplingshouldbeorientedwith
slidebarontop.
(OnlyusedonJET25)
AssembletheheatercomponentsasshowninFigures2A,2B.OptionalreflectorconfigurationsareshowninInstallappropriatedsuspension
hardware,beamclamps,chainorrodatpredeterminedlocations.Adjustmentofchainlengthwillprovideuniformpitch.
Tube and Reflector Hanger
Suspendsystemfromthesehangers.
Minimumtwo(2)requiredpertube.
ALUMINIZED(ONLYfirst10ft.)andSTEEL
Heat Exchange Tubes
Suppliedwith10ft.lengths
• JET25issuppliedwith(1)5'section
Figure 2: Heatstar JET AG Overview
*JET25ONLY*
Figure 2A Heatstar AG Model JET20
ALUMINIZED 3.5”
Figure 2B Heatstar AG Model JET25

7Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
Couplings:Only used for final 5' section on JET25 unit.
 Tubeandtubefittingsareconnectedbywrap-around
couplingswhichclampbymeansofatapered,hammer-
drivenlockmember.Thestartingendsofthecoupling
andlockmemberareidentifiedby1/4”holeswhichare
puttogetherwhenstartingassembly.Besurethetube
endsareinlineandtubeendsbuttagainststoppin(s)
insidecoupling.Theslidebaristobehammer-driven
toapointofsecuringthecouplingfirmilytothetubes.
Over-drivingwillresultindistortionofthecoupling
orslidebarliptoapointdecreasingtheholdingthe
capabilityofthecoupling.(SeeFigure4)
FIGURE 3: Installation of FLANGE
FLANGE AND COUPLING ASSEMBLY
Plain Coupling - 14612
Key for Coupling - 14616
Tighten
Loosen
Hole 1
Coupling
Assembly
Impact
Block
Hole 2
Whenassemblingcouplingnote
thelocationofHole1andHole2
Orientcouplingsothat
theimpactblockisabove
tubecenterline.
TUBECOUPLING
KEYforCOUPLING
FIGURE 4:
Alignthegasketboltholesbetweenthealuminizedtube
flangeholesandthesteeltubeflangeboltholes.The
aluminizedtubewillslideintothesteeltube,oncethe
flangesandgasketarealignedusethe4boltsandtighten
togetherwiththeattached4nuts.
Chainkit-Stk.#17370
Onechainkitwillsuspendone10ft.sectionoftubeandone10ft.
sectionofreflector.
FIGURE 7: Typical Suspension Details
Locknut
Washer
WoodBeam
Washer
ScrewHook
min.3/8"(10mm)
I-Beam
Beam
Clamp
AsReq'd
S-Hook
BarJoist
Clip
Truss
Concrete
Beam
Anchor
horizontal reflector position (standard)
radiant tube
horizontal
hanger
reflector
top
side
below
FIGURE 6: Tube and Reflector Hanger
FIGURE 5: Reflector End Cap
PartsList
1.00419ReflectorEndCap(Qty1)
2.09369SpringClip(Qty4)

8
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
FLAPPER INSTALLATION(ShowninFIGURE8)
1.Bendflappersupportaroundtheendoftubeasseenabove.
2.Endoftubeshouldbuttupagainstpunchesinflapper.
3.Flappersupportfastenedtoendoftubeusingsuppliedscrewandnut
4.Flappermustswingopenandclosefreely.
FLAPPERSUPPORT FLAPPER Vent Cap Jet 20 Installation(ShowninFIGURE9)
1.Ventcapreducerslidesover3.5”tube.
2.Exhaustclampusedtocoverhalfoftubeandhalfofventadapter.
3.Exhaustclampfastenedtightwith9/16”wrench.
Vent Cap Jet 25 Installation
1.VentCapbuttsupagainst4”tube.
2.Exhaustclampusedtocoverhalfoftubeandhalfof4”ventcap.
3.ExhaustclampfastenedwithPhillipsscrewdriver.
VENTCAPREDUCEREXHAUSTCLAMPTUBE
FLAPPER, VENT CAP, CLAMP INSTALLATION
FIGURE 8
FIGURE 9
CLAMP ASSEMBLY(ShowninFIGURE14)
1. Makesuretohaveallhardwarepartsforassembly:
 (1Base,2SupportBracket,2Bolts(9/16")and2nuts)
2.NOTE:ThecurvedsideoftheBaseshouldbefacingupandflat
sideisonthebottom.
3.AligntheSupportBracketsothecurvedsideisfacinginwardstoward
theclampwiththeholeopeningthenslidethe(9/16")Boltthrough
toattachtheotherSupportBracket,usethenuttotighten.Repeatfor
otherboltandnut.
ATTACH TUBE TO BURNER BOX(ShowninFIGURE15)
1.SlideTubeoveruntilflushwithburnerboxflange.NOTE
assembledclampshouldbelooselyfittingonburnerboxflange.
2.AligntheClampsoeachboltandnutareoneithersideofthe
seaminwhichthetubeandburnerboxflangemeet.
3.TightentheClampusinga9/16"wrench.
FIGURE 10 FIGURE 11
BASE
SUPPORTBRACKET
9/16BOLTS
CLAMP
SUPPORTBRACKET
NUTS
CLAMP
TUBE

9Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
SECTION 4
Engineering Specifications
A. Burner & Burner Controls
1.Burnersshallbecapableoffiringwithoneofthefueloptionsas
specifiedontheratingtag:NaturalGasorLP.
2.Burnersshallbesuppliedtofireatanyoneoftheinputratesas
specified.
HSJET20 80,000BTU/Hr.
HSJET25 100,000BTU/Hr.
3.Burnershallbeequippedwithadirectsparkignitioncontrol
systemwith100%shut-offignitiondevice.Powersuppliedtoeach
heatershallbe120V,60Hz,singlephase.Burnersshallberatedfor
1.0Amp(run)and5.0Amp(start.)
4.Burnershallbeequippedwiththermaloverloadmotorprotection
andacombustionairprovingsafetypressureswitch.
5.Whenspecified,incontaminatedenvironments,theburner
shallbecapableofsupplyingoutsideairtoeachburnerforthe
supportofcombustion.
6.Allburnersshallbepre-wiredwithagroundedelectrical
cordandplug.
7.Atcustomer’schoice,burnersmaybecontrolledwitheither
anoptionallinevoltagethermostatorbyoptionallowvoltage
thermostatswithanappropriatelowvoltagetransformerrelay.
8.Gassupplytotheburnersshallconformtothefollowing:
Gas pressure at MANIFOLD:
Natural Gas: 3.5” W.C.
LP Gas: 10.5” W.C.
1/2”NPTGasConnectorSize
Gas INLET pressure:
Natural Gas: 4.6” W.C. Min
14.0” W.C. Max
LP Gas: 11.0” W.C. Min
14.0” W.C. Max
1/2”NPTGasConnectorSize
B. Heat Exchanger
1.Radianttubingshallbe:
 -JET20shippedwith3"diameteraluminizedsteeltubeand3.5”
diameterhotrolledsteeltube.
 -JET25shippedwith3.5"diameteraluminizedsteeltubeand4”
daimeterhotrolledsteeltube.
2.Reflectortobeofaluminummaterialanddesignedtodirectall
radiantoutputbelowhorizontalcenterlineofradianttube.
Electrical Rating:(AllModels)
120V-60Hz
1.0AMP(Run)5.0AMP(Start)
Dimensions:
Flue Connection Size…………………3.5"(JET20) or 4”(JET25)
Outside Air Connection Size………4”
36”
36”
A
FIGURE 12: Unvented Operation (Not to Scale)
1. Ventilationequalto4CFMper1,000BTU/HRfiringratemust
beprovidedinunventedheaterinstallations
2. FordimensionsA"unvented"referto(Figure1-Minimum
ClearancestoCombustibles.)
Outside Combustion Air Supply
TheHeatstarAGheaterisapprovedforinstallationwith
anoutsideairsupplysystem.Somecompoundssuchas
halogenatedhydrocarbonsorothercorrosivechemicalsinthe
aircanbedrawnintotheequipmentandcauseanaccelerated
rateofcorrosionofsomeoftheheatercomponents.Theuse
ofsuchchemicalcompoundsneartheenclosureshouldbe
avoided.
IMPORTANT: If the building has a slight negative
pressure or contaminants are present in the air, an
outside combustion air supply to the heaters is strongly
recommended.
WARNING
Failuretoprovideafreshairinletinpoultryfarmscanleadto:
-Sootingcausingdamage
-Highcarbonmonoxidelevels,causingseriousinjuryordeath
tolivestockandhumans
SECTION 5
VENTING
6'
12"
CEILIN
G
Burner Box
12”/31 cm
MIN. FROM INSIDE
OF ROOF
INLET TUBE MUST BE 12”/31 cm
MIN. ABOVE INSULATION
flange to joist
Cut 4 1/4” in./10.8 cm
Hole in ceiling adjacent to
joist. Spread insulation
away and fasten ceiling
ROO
F
Firestop Spacer
FIGURE 13: Drawing Inlet Air From Attic
.30m
(30.4cm)
36"
91cm

10
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
Shut-OffValvemustbeparalleltoburnergasinlet.The2”
displacementshownisforthecoldcondition.Thisdisplacementmay
reducewhenthesystemisfired.
FIGURE 15: Gas Line Connection with Stainless Steel Flex Gas
Connector
Nipple
Tee
Nipple
Nipple
Cap
Burner Box
Shutoff Valve
Shutoff Valve
2”
12”
Steel Flexible Gas Connector
Adapter to Hose
SECTION 6
Gas Piping
Readapplicablewarningsonpage1&2beforeproceedingwith
GasPipeinstallation.Improperinstallationmayresultinproperty
damage,severeinjury,ordeath.
Meterandservicemustbelargeenoughtohandlealltheburners
beinginstalledplusanyotherconnectedload.Thegaslinewhich
feedsthesystemmustbelargeenoughtosupplytherequiredgas
withamaximumpressuredropof1/2”watercolumn.Localgas
supplierwillusuallyhelpinplanningthecorrectgaspipingsize.
A1/2”pipeateachburnerlocationmustbelocatedandorientedas
shownin(Figure14).Tochecksystempressure,putaplugged1/8”
NPTtapinthegaslineattheconnectiontotheburnerfarthestfromthe
supply.Beforeconnectingtheburnerstothesupplysystem,verifythatall
highpressuretestingofthegaspipinghasbeencompleted.Donothigh
pressuretestthegaspipingwiththeburnersconnected.
Followtheseinstructionstoensureaprofessionalgassupply
installation:
• Supportallgaspipingwithsuitablepipehanging
materials.
• Usewroughtironorwroughtsteelpipeandmalleable
ironfitting.Allpipefittingsshouldbenewandfree
fromdefects.
• UseL.P.gas-resistantjointcompoundonallpipe
threads.
• Checkthepipeandtubingendsforleaksbefore
placingheatingequipmentintoservice.When
checkingforgasleaks,usesoapandwatersolution:
NEVER USE AN OPEN FLAME.
Installtheflexgasconnectorasshown.Theflexgasconnector
accommodatesexpansionoftheheatingsystemandallowsforeasy
installationandserviceoftheburner.
Heater Movement
Heater Movement
Heater Movement
Heater Movement
FIGURE 14: Incorrect Gas Line Connection with Stainless Steel
Flex Gas Connector
FIGURE 15
FIGURE 14

11 Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
SECTION 7
Wiring
Heatersarenormallycontrolledbythermostats.Linevoltagethermostatsarewireddirectly(seeFigure16),24Vthermostatsarewireddirectlyusing
theterminalsonburnerbox(seeFigure18).HeatersmustbegroundedinaccordancewiththeNationalElectricCodeANSI/NFPA-70orcurrent
CanadianElectricalCode,CSAC22.1.Heatersmayalsobecontrolledwithamanuallinevoltageswitchortimerswitchinplaceofthethermostat.
T
H
N
120v – 60 Hz
White
White
Green
Green
Supply Circuit
120v – 60 Hz
Supply Circuit
Burners
(Maximum – 2 per Thermostat)
Burners
(Maximum – 1 per Thermostat)
Black
Black
H
N
T
T
H
N
120v – 60 Hz
White
White
Green
Green
Supply Circuit
120v – 60 Hz
Supply Circuit
Burners
(Maximum – 2 per Thermostat)
Burners
(Maximum – 1 per Thermostat)
Black
Black
H
N
T
FIGURE 18: Heatstar JET SERIES Burner Internal Wiring
• Ifanyoftheoriginalwireassuppliedwiththe
appliancemustbereplaced,itmustbereplacewith
wiringmaterialhavingatemperatureratingofatleast
105°Cand600volts.
V2
GND
24 VAC
L1
IND
NC
V1
PSW
TH
IGN
FC-
FC+
LED
L1
T1
Primary
Secondary
120V
LED
M
24V
LED
GAS VALVE
N
Earth Ground
Pressure Switch
To Thermostat
(Optional)
W 24V
BURNER
IGNITER / FLAME SENSOR
CONTROL BOARD
Chassis Wiring Is 18 AWG / 105 Degrees C / @ 600 Volts
Igniter Wire Is 16 AWG / 25 KVDC / 10 KVDC
Crimp Caps Are # CE5 / 105 Degrees C
Replace Any Wiring With Same Ratings
All Quick Connects Are Fully Insulated (Except Igniter)
WHITE WHITE
WHITE
WHITE
GREEN
GREEN
GREEN
GREEN
GREEN
GREEN
BLACK
BLACK BLACK
BLACK
YELLOW
RED
BLUE
BLACK
GREEN
RED
BLACK
YELLOW
YELLOW
ORANGE
RED
RED
CONNECTION DIAGRAM
Earth &
Chassis Ground
LADDER DIAGRAM
SECONDARY - 24V
T1
PRIMARY - 120V
L1 N
PCB
PCB
L1
IND
M
120V
LED
PCB
IGN
IGNITER/FLAME SENSOR
BURNER
PCB
PSW
PCB
TH
T'STAT (Optional)
JUMPER (Optional)
24 VAC
PCB
PRESSURE SWITCH
GV
PCBPCB
V1 V2
GND
Earth &
Chassis Ground
24V
LED
FIGURE 16: Line Voltage Thermostat Wiring FIGURE 17: Low Voltage Thermostat Wiring
• Eachburnermustbeelectricallygroundedinaccordancewith
theNationalElectricCodeANSI/NFPA-70orcurrentCanadian
ElectricalCode,CSAC22.1.

12
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
SECTION 8
Operation & Maintenance
Sequence of Operation
1. Turnthethermostatup.Whenthethermostatcallsforheat,
blowermotorwillenergize.
2. WhenthemotorapproachesnominalrunningRPM,theair
provingswitchclosesandactivatestheignitionmodule.
3. Oncetheignitersparks,thegasvalveisenergized.
4. Ifaflameisdetected,thegasvalveremainsopen.Whenthecallfor
heatissatisfied,andthesystemcontrolmechanismde-energizesthe
burnerlinevoltagesupply,thegasvalvesareturnedoff.
5. Ifnoflameisdetected,thegasvalveisclosed,andapurge
periodbegins.Afterthepurge,themoduleactstopowerthe
igniterforasecondwarm-upperiod,andasecondtrialfor
ignitionperiod.Ifflameisstillnotestablished,athirdandfinal
purge,warm-up,andtrialcyclebegins.Afterthreetrials,the
modulewilllockoutuntilreset.Resetisaccomplishedbyremoving
powerfromthemoduleforatleastfive(5)seconds(thermostat
cyclerequired.)
6. Ifflameisestablishedandlostonthefirstorsecondtrial,the
gasvalveisturnedoff,apurge,warm-up,andtrialforignition
willoccuronathree-trialmodule,onlythreetrialsforignition
areallowedperthermostatcycle.
Maintenance
Forbestperformance,thefollowingmaintenanceproceduresshould
beperformedbeforeeachheatingseason:
1. Besuregasandelectricalsupplytoheaterareoffbefore
performinganyserviceormaintenance.
2. Checkconditionofblowerscrollandmotor.Dirtanddustmay
beblownoutwithcompressedair,oravacuumcleanermay
beused.Whenusingcompressedairdonotexceed30psi.
3. Checkconditionofburner.Carefullyremoveanydustor
debrisfrominsidetheburnerboxorventuri.
4. Inspecttheigniter.Replaceigniterifthereisexcessivecarbon
residue,erosion,breakageorotherdefects.
5. Checktheinsideofthefiringtubewithaflashlight.Ifcarbon
orscalearepresent,scrapeoutthedepositswithawire
brushorrod,ormetalplateattachedtoawoodenpole.
 •Tubesandreflectorscanbepowerwashedbut*DO NOT*
powerwashtheburnerhead.
6. Checktheflapperorventcapforsootordirt.Aftercleaning
asnecessary,re-attachtheflappertotheheater.
7. Outsidesurfacesofheatermaybecleanedbywipingwitha
dampcloth.
8. Aqualifiedserviceagencyshouldbecontactedforservice
otherthanroutinemaintenance.
9. Checkventflapperorventcapandfreshairinlettoseethattheyhave
notbeenblockedduringthenon-heatingseason.Ifeitherpipeis
restricted,theairswitchwon’tclose,resultinginano-heatsituation.
Troubleshooting
CAUTION:BeforeopeningtheHeatstarAGburnerdoorforany
typeofservice,besurethegassupplyhasbeenshutoffatthe
heaterandtheelectricalcordfromtheburnerboxhasbeen
unplugged.
DIAGNOSTIC
LED
DIANGNOSTICINDICATORFLASHES:
TheLEDwillflashonfor1/4second,thenofffor1/4secondduring
afaultcondition.Thepausebetweenfaultcodesis3seconds.
SteadyON ControlFault
(1)FLASHES-AirFlowFault
(2)FLASHES-Flamenocallforheat
(3)FLASHES-Ignitionlockout
STEADYON:
InternalcontrolFailure.
AIRFLOWFAULT:
Combustionairflowiscontinuallymonitoredduringanignition
sequencebytheairflowswitch(PSW).Ifduringtheinitialcallfor
heatthepressurecontactsareintheclosedpositionfor30seconds
withoutanoutputtotheCombustionBlower,anairflowfault
willbedeclaredandthecontrolwillremaininthismodewiththe
combustionbloweroff.
FLAMEFAULT:
Ifatanytimethemainvalvefailstoclosecompletelyandmaintains
aflame,thefulltimeflamesensecircuitwilldetectitandenergize
thecombustionblower.Shouldthemainvalvelaterclose
completelyremovingtheflamesignal,thecombustionblowerwill
powerofffollowingtheoptionalpostpurgeperiod.
IGNITIONLOCKOUT:
Shouldthemainburnerfailtolight,orflameisnotdetectedduring
thetrialforignitionperiod,thecontrolwillgointolockout.The
valvewillbeturnedoffimmediately,andthecombustionblowerwill
beturnedofffollowingtheoptionalpostpurgeperiod.
FIGURE 19

13 Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
Blower Motor 1.Isthethermostatcallingforheat?Isthere
Fails to Run: 120Vatthemotorterminals?
2. Checkblowerforobstructions.Replace
blowerifnecessary.
1. Checkigniterfordamageorexcesscarbon.
Replaceifnecessary.
2. Checkforobstructionstotheairinletand
outlet.
3. Checkwiringandhoseconnectionstothe
airswitch.Replaceifnecessary.
4. Checkvoltagesattransformerprimaryand
secondary.Replacetransformerormoduleif
necessary.
Valve Does Not Gaspressuredownstreamofgascontrolcan
Come On: bemeasuredbyusingamanometerand
connectingtopressuretaponvalve.
1. ChecktoseeifgasvalveswitchheaterisON.
2. Supplygaspressurecanbecheckedat1/8”
NPTpressuretaponheaterexternalmanual
valve.
3. Checktoseeifgascontrolisopening:no
manifoldpressureindicatesvalveisclosed.
Ifthevalveisclosed,eitherthegasvalveorthe
ignitionmoduleisfaulty.
WARNING:Donotdisconnectgroundleads
insideheater.Donotinterchangegrounded
andungroundedleadsontransformeror
ignitionmodule.
Burner Does Not 1.Checktoseeifgaslineswereproperly
Light: purgedofair.
2. Checkinletandoutletgaspressureduring
ignitionperiod.
• Naturalinletpressureshouldbe4.6”
• Naturalmanifoldpressureshouldbe3.5”
• LPinletpressureshouldbe11.0”
• LPmanifoldpressureshouldbe10.5”
3. Checkforproperorifice.
(Drillsizearethelasttwonumbersonthe
EGI#partslistonpage15.)
Burner Does Not 1.Checkgroundwirecontinuity.
Stay Lit: 2.Checkburnerinternalwiringforreversed
leads.
3. Checkinsulationontheigniterleads.
4. Replacemoduleifnecessary.
ACCESSORY PARTS
STOCKNUMBERDESCRIPTION:
10371....................................Thermostat24volt
10392...................................Thermostat110Volt
17370...................................ChainKit
F111756……………………………AirIntakeKit
AirIntakeKitincludes:
Mini-ventcap,verticalsupportpipe,6'offlexventandtwo-4"
wormgearclamps
CONVERSION KITS
Model STOCK
NUMBER DESCRIPTION STOCK NUMBER DESCRIPTION
JET20 117 7 3 LPTONG 117 7 2 NGTOLP
JET25 117 7 5 LPTONG 117 74 NGTOLP

14
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
Parts List for Heatstar JET Tube Heaters
Item Stock # Description QTY
1F102080 JET20NG/BRN&ContBox 1
F102085 JET20LP/BRN&ContBox 1
2F106020 JET20/TubeSet-20' 1
A 06454 Alum.TubeH.E.3"O.D.X10' 1
B 06457 SteelTubeH.E.3.5"O.D.X10' 1
3 00418A Reflector10' 2
4034444 TurbulatorBaffle7' 1
8
7
3
4
6
B
1
A
5
9
10 or
Item Stock # Description QTY
1F102090 JET25NG/BRN&ContBox 1
F102095 JET25LP/BRN&ContBox 1
2F106025 JET25,/TubeSet-25' 1
A 06455 Alum.TubeH.E.3.5"O.D.X10' 1
B 06456 SteelTubeH.E.4"O.D.X10' 1
C 06416 SteelTubeH.E.4"O.D.X5'
w/oFlange
1
3 00418A Reflector10' 2
40 0 417 A Reflector5' 1
1
3
A
B
C
11
10
47
58
9
3
6
7
12
13
or
Item Stock # Description QTY
514572 Hanger3" 2
614573 Hanger3.5" 2
70 0 419 ReflectorEndCap 2
809369 SpringClips 8
914579 Flapper 1
10 19 0 41 VenCap 1
** 145 82 VentAdapter3.5"-4" 1
Item Stock # Description QTY
503445 TurbulatorBaffle10' 1
614573 Hanger(3.5") 2
714585P Hanger(4") 3
814 612 TubeCoupling 1
914 616 KeyforTubeCoupling 1
10 0 0 419 ReflectorEndCap 2
11 09369 SpringClips 8
12 14579 Flapper 1
13 19 0 41 VentCap 1
HSJET25
HSJET20

15 Operating Instructions and Owner’s ManualEnerco | Heatstar AG Series Heater
1
8
9
6
7
2
25
12
13
19
3-4
10
11
14-15
16
24 5
17-18
20-23
25
3x
4x
6x
26
25
2x
2x
27
2x
28
6x
28
3x
ITEM# EGI# DESCRIPTION QTY
1 02962 ENCLOSURE, AG, TUBE, BOX BURNER 1
2 02963 COVER, AG, TUBE, BOX BURNER 1
3 00042 GAS VALVE NG 1
4 00043 GAS VALVE LP 1
5 02974 GAS VALVE BRACKET 1
6 07376 MOTOR 1
7 02968 VENT ADAPTER 1
NS 02964 POWER CORD 1
8 60889 POWER CORD STRAIN RELIEF 1
9 02721 THERMOSTAT BUSHING 1
10 08364A TRANSFORMER 1
11 02970 IGNITION MODULE 1
12 02973 BURNER ASSEMBLY 1
13 60729 IGNITER / FLAME SENSE ELECTRODE 1
14 02979 PRESSURE SWITCH - JET20 1
ITEM# EGI# DESCRIPTION QTY
15 10414A PRESSURE SWITCH - JET25 1
16 12397 BURNER FLANGE GASKET 1
17 02966 BURNER FLANGE 3"- JET20 1
18 02967 BURNER FLANGE 3.5"- JET25 1
NS 02971 FLEX TUBE GAS MANIFOLD 1
19 02720 ORIFICE HOLDER FITTING 1
20 05718 ORIFICE JET20 NG 1
21 05737 ORIFICE JET20LP 1
22 05712 ORIFICE-JET25NG 1
23 05733 ORIFICE - JET25LP 1
24 98012 BOLT 5/16" - 18 X 1" 4
25 98902 SCREW #8-32 X 3/8" 10
26 98907 SCREW #8-32 X 1" 2
27 98901 SCREW #8-32 X 1/4" 4
28 98692 NUT #8-32 9

16
Enerco | Heatstar AG Series Heater Operating Instructions and Owner’s Manual
WARNING:
USEONLYMANUFACTURER’SREPLACEMENTPARTS.USEOFANYOTHERPARTS
COULDCAUSEINJURYORDEATH.REPLACEMENTPARTSAREONLYAVAILABLE
DIRECTFROMTHEFACTORYANDMUSTBEINSTALLEDBYAQUALIFIEDSERVICE
AGENCY.
FOR INFORMATION REGARDING SERVICE OR PARTS:
Contactyourlocalheatingservicetechnicianordealer.
FOR ADDITIONAL INFORMATION:
PleasecallToll-Free866-447-2194—www.heatstarbyenerco.com
Ourofficehoursare8:00AM—5:00PM,EST,MondaythroughFriday.
Pleasehavethemodelnumber,serialnumberanddateofpurchaseready.
LIMITED WARRANTY
Thecompanywarrantsthisproducttobefreefromimperfectionsinmaterialor
workmanship,undernormalandproperuseinaccordancewithinstructionsofThe
Company,foraperiodof1yearontheboxand2yearsonthetubesfromthedate
ofdeliverytothebuyers.
TheCompany,atitsoption,willrepairorreplaceproductsreturnedbythebuyertothe
factory,transportationprepaidwithinsaidwarrantyperiodandfoundbytheCompanyto
haveimperfectionsinmaterialorworkmanship.
Ifapartisdamagedormissing,callourCustomerServiceDepartmentat866-447-2194.
AddressanyWarrantyClaimstotheCustomerServiceDepartment,Heatstar,Inc,4560W.
160THST.,CLEVELAND,OHIO44135.Includeyourname,addressandtelephonenumberand
includedetailsconcerningtheclaim.Also,supplyuswiththepurchasedateandthename
andaddressofthedealerfromwhomyoupurchasedourproduct.
TheforegoingisthefullextentoftheresponsibilityoftheCompany.Therearenoother
warranties,expressorimplied.Specificallythereisnowarrantyoffitnessforaparticular
purposeandthereisnowarrantyofmerchantability.InnoeventshalltheCompanybeliable
fordelaycausedbyimperfections,forconsequentialdamages,orforanychargesofthe
expenseofanynatureincurredwithoutitswrittenconsent.Thecostofrepairorreplacement
shallbetheexclusiveremedyforanybreachofwarranty.Thereisnowarrantyagainst
infringementofthelikeandnoimpliedwarrantyarisingfromcourseofdealingorusageof
trade.Thiswarrantywillnotapplytoanyproductwhichhasbeenrepairedoralteredoutside
ofthefactoryinanyrespectwhichinourjudgmentaffectsitsconditionoroperation.
Somestatesdonotallowtheexclusionorlimitationofincidentalorconsequentialdamages,
sotheabovelimitationorexclusionmaynotapplytoyou.ThisWarrantygivesyouspecific
legalrights,andyoumayhaveotherrightswhichvaryfromstatetostate.
Heatstar,Inc,4560W.160THST.,CLEVELAND,OHIO44135•866-447-2194
©2017,Heatstar,IncAllrightsreserved
Heatstar,Increservestherighttomakechangesatanytime,withoutnoticeor
obligation,incolors,specifications,accessories,materialsandmodels.
OPERATING INSTRUCTIONS AND OWNER’S MANUAL
110VMODELS
by ENERCO
JET20
JET25