Detroit Radiant Products PH Series User manual

WARNING
!
!
Keep these instructions for future reference.
For Your Safety
If you smell gas:
• Shutoffgastotheappliance. •Callyourgassupplier.Donotuseanyphoneinyourbuilding.
•Extinguishanyopename. •Followthegassupplier’sinstructions.
•Donottrytolightanyappliance. •Ifyoucannotreachyourgassupplier,calltheredepartment.
•Donottouchanyelectricalswitch.
Improperinstallation,adjustment,alteration,serviceormaintenancecancause
propertydamage,injuryordeath.Readandunderstandtheinstallation,operating
andmaintenanceinstructionsthoroughlybeforeinstallingorservicingthisequipment.
Thisheatermustbeinstalledandservicedbytrainedgasinstallationandservice
personnelonly.Inspecttheheaterannually.Failuretocomplycouldresultinpersonal
injury,asphyxiation,death,reand/orpropertydamage.
Not for indoor residential use.Thisheaterisnotapprovedforuseinanyindoor
residentialapplication.Thisincludes,butisnotlimitedto,attachedgarages,solarium,
livingquarters,etc.Installationinresidentialindoorspacesmayresultinproperty
damage,asphyxiation,seriousinjuryordeath.
Storageofgasolineandotherammablevaporsandliquidsinthevicinityofthisor
anyotherappliancemayresultinreorexplosion.Donotstoreorusegasolineor
otherammablevaporsandliquidsinthevicinityofthisoranyotherappliance.
Maintainclearancetocombustibles.
LIOPH-3M-12/08(CDS)
ReplacesLIOPH-2M-2/08
PH Series Manual
Detroit Radiant Products Co.
Allpersonsinvolvedwiththeinstallation,operationandmaintenanceoftheheatersystemmustreadand
understandtheinformationinthismanual.
Installation, Operation,
Maintenance and Parts

Contents
1.0 Safety....................................................................3
  WarningSymbols .....................................................3
  Applications ..........................................................3 
  ClearancetoCombustibles ..............................................4
  GasConnection.......................................................6
  Standards,CerticationsandGovernmentRegulations ........................6
  SafetySignsandLabels................................................8
2.0 Installation ...............................................................9
  Design .............................................................9
  HeaterMounting ......................................................11
  GasSupply..........................................................13
  ElectricalRequirements................................................16
  Ventilation ...........................................................17
3.0 Operation................................................................18
  SequenceofOperation .................................................18
  WiringDiagrams......................................................19
4.0 Maintenance ..............................................................20
  PeriodicMaintenance ..................................................20
  TroubleshootingGuide .................................................21
5.0 Parts ....................................................................22
6.0 Limited Warranty..........................................................24
2

NOTICE
WARNING
!
!
CAUTION
!
WARNING
!
!
WARNING
!
!
Warning Symbols
Safetyisthemostimportantconsiderationduringinstallation,operationandmaintenanceoftheinfra-red
heater.Youwillseethefollowingsymbolsandsignalwordswhenthereisahazardrelatedtosafetyor
propertydamage.
Improperinstallation,adjustment,alteration,serviceormaintenancecancause
propertydamage,seriousinjuryordeath.Readandunderstand,theinstallation,
operatingandmaintenanceinstructionsthoroughlybeforeinstallingorservicingthis
equipment.Onlytrained,qualiedgasinstallationandservicepersonnelmayinstallor
servicethisequipment.
3
1.0 Safety •WarningSymbols•Applications
Applications
Thisisnotanexplosionproofheater.ConsultyourlocalFireMarshall,insurancecarrierandother
authoritiesforapprovaloftheproposedinstallation.
Commercial / Industrial
Infra-redheatersaredesignedandcertiedforuseinindustrialandcommercialbuildingssuchas
outdoorrestaurantpatios,warehouses,manufacturingplants,aircrafthangarsandvehiclemaintenance
shops.Formaximumsafety,thebuildingmustbeevaluatedforpotentialhazardsbeforeinstallingthe
heatersystem.Acriticalsafetyfactortoconsiderbeforeinstallationistheclearancetocombustibles.
Not For Indoor Residential Use.Installationofainfra-redheatersystemin
residentialindoorspacesmayresultinpropertydamage,seriousinjuryor
death.Inresidentialapplicationsthisheatermayonlybeusedoutdoors.
Outdoor Residential
ThisheatermayonlybeusedinoutdoorresidentialapplicationsandisNOTapprovedforuseinany
indoorresidentialapplication.Thisincludes,butnotlimitedto,attachedgarages,livingquarters,solarium,
etc.Consultthelocalremarshaland/orinsuranceproviderifunsureofyourapplication.
1.0 Safety
Warningindicatesapotentiallyhazardoussituation
which,ifnotavoided,couldresultindeathorinjury.
Cautionindicatesapotentiallyhazardoussituation
which,ifnotavoided,couldresultinminoror
moderateinjury.
Noticeindicatesapotentiallyhazardoussituation
which,ifnotavoided,couldresultinproperty
damage.

1.0 Safety •ClearancetoCombustibles
4
Clearance to Combustibles
Combustible items: Moving Objects:
•Wood •Overheaddoors
•Paper •Vehiclelifts
•Fabric •Cranes
•Chemicals •Hoists
•Wallorroofinsulation •Carwashequipment
Wheninstallingtheinfra-redheatersystem,theminimumclearancestocombustiblesmustbemaintained.
ThesedistancesareshowninChart1.1andontheminimumclearancetocombustibleslabel
(F/N:LLPCL002)foundontheheater. Ifyouareunsureofthepotentialhazards,consultyourlocalre
marshall,reinsurancecarrierorotherqualiedauthoritiesontheinstallationofgasredinfra-redheaters
forapprovaloftheproposedinstallation.
Acriticalsafetyfactortoconsiderbeforeinstallationistheclearancestocombustibles.Clearanceto
combustiblesisdenedastheminimumdistanceyoumusthavebetweentheinfra-redheaterandthe
combustibleitem.Considerationsmustalsobemadeformovingobjectsaroundtheinfra-redheater.The
followingisapartiallistofitemstomaintainclearancesfrom:
Hazards Include:
Formaximumsafetythebuildingmustbeevaluatedforhazardsbeforeinstallingtheheatersystem.
Examplesinclude,butnotlimitedto:
•Gasandelectricallines
•Combustibleandexplosivematerials
•Chemicalstorageareas
•Areasofhighchemicalfumeconcentrations
•Provisionsforaccessibilitytotheheater
•Adequateclearancesaroundairopenings
•Combustionandventilatingairsupply
•Vehicleparkingareas
•Vehicleswithliftsorcranes
•Storageareaswithstackedmaterials
•Lights
•Sprinklerheads
•Overheaddoorsandtracks
•Dirty,contaminatedenvironment
WARNING
!
Improperlyconnectedgaslinesmayresultinseriousinjuryordeath,explosion,
poisonousfumes,toxicgases,asphyxiation.Connectgaslinesinaccordancetonational,
state,provincialandlocalcodes.
Placementofexplosiveobjects,ammableobjects,liquidsandvaporsclosetothe
heatermayresultinexplosion,re,propertydamage,seriousinjuryordeath.Donot
store,oruse,explosiveobjects,liquidsandvaporinthevicinitytheheater.
Failuretocomplywiththepublishedclearancestocombustiblescouldresultinpersonal
injury,deathand/orpropertydamage.
Inlocationsusedforthestorageofcombustiblematerials,signsmustbepostedto
specifythemaximumpermissiblestackingheighttomaintaintherequiredclearances
fromtheheatertothecombustibles.Signsmusteitherbepostedadjacenttotheheater
thermostatsorintheabsenceofsuchthermostats,inaconspicuouslocation.

5
1.0 Safety •ClearancetoCombustibles
Chart 1.1 • Clearance to Combustibles in Inches (seeFigure1.1)
* Heatersmountedonananglebetween0°to30°mustmaintainclearancespostedfor0°or30°;
whicheverisgreater.
Important!Iftheheaterismountedbeneathanon-combustiblesurfacean8in.minimumtopclearance
mustbemaintainedfromthetopoftheheatertopreventoverheatingthecontrols.
Clearancetocombustibledistancesrepresentasurfacetemperatureof90°F(32°C)aboveambient
temperature.Ensurethatbulidingmaterialswithalowheattolerance(i.e,awnings,fabrics,plastics,
sprinklers,insulation)areprotectedagainstdegradation.Thismayrequiretheheatertobemountedata
distanceinexcessofthepublishedclearancestocombustibles.ContacttheDetroitRadiantProductsCo.
orthebuildingmaterialmanufacturer.
Back
Inletsidedown
Below
Top
(toceiling)
Figure 1.1 •Clearance to Combustibles
Model No. Mounting
Angle* Sides Back Top Below End(s) Front
PH28(-SS)
28,000[N,P]
0° 14 N/A 13 46 22 N/A
30° N/A 817 46 22 46
PH31(-SS)
31,000[N,P]
0° 14 N/A 13 46 22 N/A
30° N/A 817 46 22 46
PH34(-SS)
34,000[N,P]
0° 14 N/A 13 46 22 N/A
30° N/A 817 46 22 46
Below
SideSide
End End
Front
END VIEW
0°MOUNTINGANGLE
END VIEW
30°MOUNTINGANGLE
SIDE VIEW
30˚
Top
(toceiling)

6
1.0 Safety •GasConnection•Standards,CerticationsandGovernmentRegulations
Standards, Certifications and Government Regulations
Installationofthisinfra-redheatermustcomplywithallapplicablelocal,stateandnationalspecications,
regulationsandbuildingcodes.Contactthelocalbuildinginspectorand/orremarshallforguidance.
Intheabsenceoflocalcodes,theinstallationmustconformtothelatesteditionoftheNationalFuelGas
Code,ANSIZ223.1(NFPA54).
WARNING
!
Toensureyoursafety,andcomplywiththetermsofthewarranty,allunitsmustbeinstalledinaccordance
withtheseinstructions.
Anapprovedconnector,suitablefortheenvironmentofequipmentusage,isrequired.Visibleor
excessiveswaying,exingandvibrationofthegasconnectionsmustbeavoidedtopreventfailure.
Neitherthegaspipenortheconnectorshallbeplacedintheuedischargeareaorindirectcontact
withinfraredrays.Innocaseshallthegassupplysupportorbearweightoftheheater.
Gas Connection
Chart 1.2 • Standards and Code Installation Guidelines •Building Aspect
Building
Aspect Codes And Guidelines
Electrical Theheatermustbeelectricallygroundedinaccordancewiththefollowingcodes:
RefertoNationalElectricalCode®,ANSI/NFPA70(latestedition).Wiringmustconformto
thelatesteditionofNationalElectricalCode®,localordinances,andanyspecialdiagrams
furnished.
Venting Unventedheatermustmeetventilationrequirements.Seepage17.

7
Detroit Radiant Products units comply or are certified by one or more of the following
organizations or standards:
• CSAInternationalRequirement(CSA2.37).
 • AmericanNationalStandardsInstitute(ANSIZ83.26).
1.0 Safety •Standards,CerticationsandGovernmentRegulations
Chart 1.3 • Standards and Code Installation Guidelines •Building Type
Building
Type Codes And Guidelines
Public
Garages
Installationofthisinfra-redheaterinpublicgaragesmustconformtothefollowingcodes:
StandardforParkingStructuresNFPA88A(latestedition)ortheCodeforMotor
DispensingFacilitiesandRepairGaragesNFPA30A(latestedition).
Guidelines:
 •Heatersmustnotbeinstalledlessthan8ft.(2.4m)abovetheoor.Minimum  
 clearancestocombustiblesmustbemaintainedfromvehiclesparkedbelowthe
 heater.
 •Wheninstalledoverhoists,minimumclearancestocombustiblesmustbemaintained
 fromtheuppermostpointofobjectsonthehoist.
Aircraft
Hangars
Installationofthisinfra-redheaterinaircrafthangarsmustbeinaccordancewiththe
followingcodes:
RefertoStandardforAircraftHangars,ANSI/NFPA409(latestedition).
Guidelines:
 •Inaircraftstorageandservicingareas,heatersshallbeinstalledatleast10ft.(3m) 
  fromabovetheuppersurfaceofwingsoroftheengineenclosuresofthehighest 
  aircraftthatmaybehousedinthehangar.Themeasurementshallbemadefromthe
  wingorengineenclosure,whicheverishigherfromtheoor,tothebottomofthe
heater.
 •Inareasadjoiningtheaircraftstoragearea(e.g.,shops,ofces)thebottomofheaters
  shallbeinstallednolessthan8ft.(2.4m)abovetheoor.
 •Suspendedorelevatedheatersshallbelocatedinspaceswheretheyshallnotbe 
  subjecttodamagebyaircraft,cranes,movablescaffoldingorotherobjects.
Provisionsshallbemadetoassureaccessibilitytosuspendedinfra-redheatersfor
recurrentmaintenancepurposes.

F/N:LL01-ClearanceSafetyTag
(Afxadjacenttoheater’sthermostat).
F/N:LL02-ObserveProperGasType(NaturalGas)
F/N:LL03-ObserveProperGasType(LPGas)
RatingLabel
Safety Signs and Labels
Itisimportanttoprovidewarningstoalertindividualstopotentialhazardsandsafetyactions.ANSI
Z83.26/CSA2.37requireyoutopostasign“specifyingthemaximumpermissiblestackingheightto
maintaintherequiredclearancesfromtheheatertothecombustibles”neartheheatersthermostatorin
absenceofsuchthermostatsinaconspicuouslocation.
Safetywarninglabelsmustbemaintainedontheinfra-redheater.Illustrationsofthesafetylabels,and
theirlocations,arepicturedbelow.Inlocationsusedforthestorageofcombustiblematerials,signsmust
bepostedtospecifythemaximumpermissiblestackingheighttomaintaintherequiredclearancesfrom
theheatertocombustibles.Signsmusteitherbepostedadjacenttotheheaterthermostatsorinthe
absenceofsuchthermostatsinaprominentlocation.
8
1.0 Safety •SafetySignsandLabels
TopPanel
F/N:LLPCL002
PatioHeaterClearance
toCombustiblesLabel
WA RNING OBSERVE
PROPER GAS
DO NOT
ROTATE CONTROL
ASSEMBLY FOR
GAS TYPE
ONLY
USE TWO
WRENCHES
TO TIGHTEN
®
DETROIT RADIANT PRODUCTS COMPANY
21400 HOOVER ROAD - WARREN, MI
RE-VERBER-RAY INFRA-RED RADIANT TUBE HEATER
FOR OUTDOOR &INDOOR (Non-Residential) INSTALLATION ONL Y .
High Intensity Infrared Heater
Class IIIA Pe rmanent Label
[phone] www.detroitradiant.com
Volts AC:
AMPS - Starting:
AMPS - Running:
120V - 60Hz
0.25
0.24
DESIGN COMPLIES WITH:
ANSI Z83.19a-2002-Gas Fired High Intensity infra-Red Heater CSA 5.90 (5th Ed.) Gas Fired Infra-Red Patio Heater
Control Voltage
Manifold Pressure:
Minimum Inlet Pressure:
120V - 60Hz
5.0 INCHES W.C.
14.0 INCHES W.C.
Serial No.: 0812XXXXXXXXXX 0001
MODEL NO.
PH-34N
Heater Type
Minimum Mounting Angle:
Maximum Mounting Angle:
6.0 INCHES W.C.
0
30
DEGREES
DEGREES
INPUT BTU/H
34,000
FOR USE WITH
Natural Gas
SAMPLE

2.0 Installation
WARNING
!
CAUTION
!
NOTICE
Toensureasafe,properlydesignedheatingsystem,alayoutshouldbedevelopedforthecorrect
placementoftheinfra-redheater(s).Asidefromsafetyfactorssuchasclearancetocombustibles(see
Chart1.1onpage5),youshouldtakeintoconsideration:
 • Theenvironment(e.g.,isitcold/drafty,average,protected)?
NOTE: Theeffectiveinfra-redsurfacetemperatureofapersonorobjectmay
   bediminishedwithwindabove5mph,windbarriersmayberequired.
 •Whatistheareaofheatcoverage(e.g.,sq.ft.)needed(Chart2.1,Figure2.2)?
 •Istheheaterbeingusedinasocialgatheringarea,orworkstation(s)?
 •Themountingheightoftheheater(Chart2.1,Figure2.2).
 •Thetypeofmountingtobeused.
 •Physicalspaceneededfortheheater(Figure2.1).
 •Gassupplyandconnections.
 •Combustion,ventilatingairsupplyandexhaustpath.
 •Electricityandwiringtotheheater.
Firesprinklerheadsmustbelocatedatanappropriatedistancefromtheheatertoavoidaninadvertent
discharge.Thisdistancemayexceedthepublishedclearancetocombustibles.Certainapplicationsmay
requiretheuseofhightemperaturesprinklerheadsorrelocationoftheheaters.
9
2.0 Installation •Design
Readandunderstand,theinstallation,operatingandmaintenanceinstructions
thoroughlybeforeinstallingorservicingthisequipment.
Onlytrained,qualiedgasinstallationandservicepersonnelmayinstallorservice
thisequipment.
Thisheatercannotbeusedinabuildingwitha
roofthatisnotinsulatedorwherecondensation
problemscanoccur.
Design
Radiantheatiscapableofdamagingordestroying
certainmaterialsoritems.Donotstorematerialor
itemsunderneaththeheater.Alwaysmaintain
clearancetocombustibles.
Firesprinklersystemscontainingpropyleneglycol,antifreezeorotherpotentiallyammablesubstances
shallnotbeusedinconjunctionwiththisheaterwithoutcarefulconsiderationforandavoidanceof
inadvertentdischargehazards.ForfurtherinformationconsultNFPA13.Alwaysobserveapplicablestate
andlocalcodes.
CAUTION
!

10
2.0 Installation •Design
Chart 2.1 • Recommended Mounting Heights
Model & Input
Recommended
Mounting Height
(Dim. A)
Approximate
Coverage Area
Approx. Coverage
(sq. ft.)
PH-28
28,000
BTU/H
8’-0”to8’-6” 7’x7’ 49 sq.ft.
PH-31
31,000
BTU/H
8’-0”to9’-0” 8’x8’ 64 sq.ft.
PH-34
34,000
BTU/H
8’-6”to10’-0” 9’x9’ 81sq.ft.
A
Figure 2.2 •Recommended Mounting Heights
Note:Thischartisprovidedasaguideline.Actualconditionsdictatevariancesfromthisdata.
Figure 2.1 •Heater Dimensions
END VIEW
8.5”
9”
SIDE VIEW
45”
5.5”
3.25”

10 11
2.0 Installation •HeaterMounting
WARNING
!
Heater Mounting
Impropersuspensionoftheinfra-redheatermayresultincollapseandpersonsbeing
crushed.Alwayssuspendfromapermanentpartofthebuildingstructurethatcansupport
thetotalforceandweightoftheheater.
Failuretomaintainminimumclearancetocombustiblesmayresultinreand/orexplosion,
propertydamage,seriousinjuryordeath.Alwaysmaintainminimumclearancesandpost
signsorprovidedtags(F/N:LL01)whereneeded.Signsshouldstatethehazardsforthe
particularapplicationandbelegibleforthebuildingoccupants.Consultthefactoryora
factoryrepresentativeforadditionalinformationonsignagecompliance.
Theheatercanbesuspendedwithchainsorrigidthreadedrod.Localcodes,orconditionssuchaswind
draftsorothervariablescancausemovementoftheheaterandmayrequirerigidthreadedrod.Avoid
excessivemovementand/orvibrationofthegasconnectionbyrigidlymountingtheheater(seeFigure2.4).
TheDetroitRadiantoptionalpatioheatermountingbrackets(P/N:PH-BKT)canbeusedinplaceofrigid
threadedrods.Consultallapplicablecodesbeforeinstallation.
Theheatermustbelevelfromsidetosideandcanbesetatananglebetween0°and30°fromhorizontal.
Thegasconnectionandpowercordmustbelocatedonthelowerside(seeFigure2.3).
Levelendtoend
Whenmountingtheheateronan
angle,thegasinletandpowercord
mustbelocatedtowardsthelowerside
oftheheater(towardstheoor).
Optionalmounting
bracket(P/N:PH-BKT)
30° End
Figure 2.3 •Heater Orientation
End

Figure2.4showsdifferenttypesofmountingcongurations.Dependingonthetypeofmountingyouuse,
besureto:
1Preparemountingsurface.Ifnecessary,weldblockstomountingstructure,drillholes,etc.
2Fastenbeamclamp,screwhookorothertypeofsuspensionanchortohangingpoint.
3AttachandcloseS-Hook(P/N:S-HOOK)and#1double-loopchain(P/N:THCSincludesa5ft.chain
and2S-hooks,4required)toanchor.Checkthatitissecurelyattached.
4Attachheatertochains.Adjustchainlengthsuntiltheheaterislevelandequalweightdistributionis
achieved.Chainsmustbestraightupanddown,donotinstallchainsatanangle.
12
2.0 Installation •HeaterMounting
SteelC-clamp
ScrewHook
S-Hookand
#1double-loop
chain(recommended)
BarJoistClip
Rigidthreadedrod
andturnbuckle
(eldsupplied)
Optionalmounting
bracket(PH-BKT)
attachedtoceiling.
WoodBeam
Optionalmounting
bracket(PH-BKT)
attachedtowall.
I-Beam
Figure 2.4 •Heater Mounting
ConcreteBeam
0-30° 0-30° 0-30°
0-30°
0-30°
0°MountingAngle
30°MountingAngle
30°MountingAngle0°MountingAngle

Thegassupplytotheinfra-redheatermustbeconnectedandtestedinaccordancewithnational,state,
provincialandlocalcodesalongwiththeguidelinesintheDetroitRadiantPHSeriesmanual.Refertothe
latesteditionoftheANSIZ223.1(NFPA54)Standard.
Important!Beforeconnectingthegassupplytotheinfra-redheater(s):
 • Checkforconditionssuchasdraftsorothervariableswhichmightcauseexcessivemovementof 
  theunitandcausedamagetothegasconnection.Ensurethattheunitissecurelymounted 
  andconnectthegaswithanapprovedconnectiondevicesuitablefortheenvironmentofuse.
 • Checkthatthegaspipingandservicehasthecapacitytohandletheloadofallheatersbeing 
  installed,aswellasanyothergasappliancesbeingconnectedtothesupplyline.
 • Checkthatthemaingassupplylineisofproperdiametertosupplytherequiredfuelpressures.
 • Ifutilizingusedpipe,verifythatitsconditioniscleanandcomparabletoanewpipe.Testallgas 
  supplylinesinaccordancewithlocalcodes.
• Testandconrmthatinletpressuresarecorrect.Refertotheratingplateforrequiredminimum 
  andmaximumpressures(seeChart2.2).Thegassupplypipemustbeofsufcientsizeto 
  providetherequiredcapacityandinletpressuretotheheater(ifnecessary,consultthelocal
  gascompany).
 • Fortestpressuresinexcessof1/2psig(3.5kPa),theheaterandballshutoffvalvemustbe 
  disconnectedfromthegassupplypipingsystemduringanypressuretestingofthesystem.
 • Fortestpressuresequaltoorlessthan1/2psig(3.5kPa),theheatermustbeisolatedfromthegas
  supplypipingsystembyclosingit’sindividualmanualshutoffvalveduringanypressuretestingof 
  thegassupplypipingsystem.
2.0 Installation •GasSupply
13
Gas Supply
WARNING
!
Improperlyconnectedgaslinesmayresultinre,explosion,
poisonousfumes,toxicgases,asphyxiationanddeath.
Connectgaslinesinaccordancetonational,state,provincial
andlocalcodes.
Chart 2.2 • Manifold Pressure
Type of Required Manifold Minimum Inlet Maximum Inlet
Gas Pressure Pressure Pressure
Pressure Equivalents:1inchW.C.equals.058oz./sq.in.equals2.49Mbar.
Note: Checkmanifoldpressureatthetapontheballshutoffvalve.Readingswillbeaboveatmospheric
 pressureduringoperation.
 Natural 5.0inchesW.C. 6.0inchesW.C. 14.0inchesW.C.
LiqueedPetroleum 10.0inchesW.C. 11.0inchesW.C. 14.0inchesW.C.

14
2.0 Installation •GasSupply
1 Disconnectthepowertotheheater.
2 Turnoffthegassupplytotheheaterand“bleed”thegasline.
3 Usingtwowrenches,slowlyloosenthettings.Excessivetorqueonthemanifoldmaymisalignthe
 orice.
4 Inspectthehoseandttingsforabrasion,wearordamage.Replaceifnecessary.
To disconnect the gas:
Thegasoutletmustbeinthesameroomastheapplianceandaccessible.Itmaynotbeconcealedwithin
orrunthroughanywall,oororpartition.
1 Installasedimenttrap/driplegifcondensationmayoccuratanypointofthegassupplyline.This
 willdecreasethepossiblyofloosescaleordirtinthesupplylineenteringtheheater’scontrol 
 systemandcausingamalfunction. Note:Highpressuregasabove14.0inchesW.C.(water 
 columnpressure)requiresahighpressureregulatorandballvalve(eldsupplied).
2 Astainlesssteelexiblehose(PH-FC24)formedintoasmoothC-shapeisrecommended 
 (Figure2.5).Iflocalcodesprohibittheuseofagashose,thenaswingjointmaybeused.
3 Attachtheballvalvetothegassupplypipe.ApplypipecompoundtoNPTadapterthreadstoseal
 thejoint.Useonlyapipecompoundresistanttoliquidpetroleum.
Note:Providea1/8in.NPTpluggedtappingaccessiblefortestgaugeconnectionimmediately 
 upstreamofgasconnectiontotheheater(providedonballvalve,whensupplied).
4 Attachagasconnector(PH-FC24)totheadapterandtheheater’sgasinlet.Sealthejoints.
Important!Thettings(nuts)ontheexibleconnector(optionalPH-FC24)mustbeconnectedto 
 anadapter.Theymaynotbedirectlyconnectedtothegassupplypipe.
Excessivetorqueonthemanifoldmaymisaligntheorice.Alwaysusetwowrenchestotighten 
 matingpipeconnections.
5 FinalassemblymustbetestedforgasleaksaccordingtoNFPAorlocalcodes.
WARNING
!
!
Testingforgasleakswithanopenameorothersourcesofignitionmayleadtoareor
explosionandcauseseriousinjuryordeath.TestinaccordancewithNFPAorlocalcodes.
WARNING
!
Failuretoinstall,operateorservicethisapplianceintheapprovedmannermayresultin
propertydamage,injuryordeath.Thisheatermustbeinstalledandservicedbytrained
gasinstallationsandservicepersonnelonly.
Theinstallationofthisheatermustconformwithlocalbuildingcodesor,intheabsence
ofsuchcodes,theNationalFuelCode(NFPA54).
To connect the gas:

15
2.0 Installation •GasSupply
WARNING
!
Failuretodisconnecttheelectricitytotheheaterbeforedisconnectingthegassupply
mayresultinexplosion,re,propertydamage,injuryordeath.
Figure 2.5 •Gas Connection (shown installed with a flexible hose)
Dripleg/Sedimenttrap
(eldsupplied)
Stainlesssteelgasconnector
(P/N:PH-FC24),formedinto
smoothC-shape.
Regulator
(eldsupplied
whenrequired)
Elbows
(eldsupplied)
Shutoffvalve/
inlettap
Optional
mounting
bracket
(P/N:PH-BKT)
Shutoffvalve/
inlettap
WARNING
!
!
Conditionssuchaswinddraftsorothervariablescancausemovementoftheheaterand
mayrequireittoberigidlymounted.Avoidexcessivemovementand/orvibrationofthe
gasconnectionbyrigidlymountingtheheater.
NOTE:Donotexceed14inchesW.C.totheappliance.
 Usearegulatorwhengassupplypressureexceeds14inchesW.C.
Stainlesssteelgasconnector
(P/N:PH-FC24),formedinto
smoothC-shape.

2.0 Installation •ElectricalRequirements
NOTICE
WARNING
!
Incorrectorimproperwiringmayresultinshock,injuryordeath.Fieldwiringtotheheater
mustbeconnectedandgroundedinaccordancewithnational,state,provincial,local
codesandtotheguidelinesinthismanual.Refertothemostcurrentrevisionstothe
ANSI/NFPA70Standard.
Controlsystemsareinitiatedbyeither120VACoroptional24VACcontrolvoltage.A120VACsystem
canbeoperateddirectlywith120VACtotheheater.Heaterswiththeoptionalrelaycanbecontrolledwith
24VACtransformers(soldseparately)mustbeusedtosupplypowerofsufcientVAratingforsingleor
multipleconnectedinstallations.
Important!Propergroundingandpolarityareessential.Ifthesystemisnotproperlygrounded,itcannot
determinethepresenceofaameandwilllockoutandshutoff.
ForwiringofcontrolsseeFigure2.7below.Itisrecommendedthatthecontrolbeinstalledonthehot
sideofafusedsupplylineandhaveasufcientamperecapacityratingfortheheater(s)itwillcontrol
(seeFigures3.1&3.2).
Electrical Requirements
Figure 2.7 •Typical Field Wiring
PH Series 120 VAC PH Series 120 VAC with 24 VAC Control (PH-24VAO)
Radiantheatmaydamagetheexiblepowercord.Alwayskeeptheexiblepowercordawayfromthe
heater.Donotallowthepowercordtobesubjectedtoradiantheat.
16
Neutral Neutral
24VACthermostat,
timerorswitch
(eldsupplied)
Hot
120VAC
Hot
24VAC
Transformer
PHSeries
Heater
Optional
mountingbracket
(P/N:PH-BKT)
120VACthermostat,
timerorswitch
(eldsupplied)
PHSeries
Heater
120VACblack
powercord
Optionalmounting
bracket
(P/N:PH-BKT)
120VACblack
powercord 24VACyellow
controlcord

2.0 Installation •Ventilation
17
16
Thisinfra-redheatermustbeventedinaccordancewithnational,state,provincialandlocalcodesand
theguidelinesintheDetroitRadiantPHSeriesmanual.RefertothelatesteditionoftheANSIZ223.1
(NFPA54)Standard.
Itisrequiredthattheupperlevelsofthespacetobeheatedareproperlyventilatedtosupplycombustion
airtotheheatersandtosufcientlydilutetheproductsofcombustion.Itisalsoimportanttokeeptheue
dischargeareaclearofgaspipingandelectricalwiring(seeFigure2.6).
Provisionsmustalsobemadetoprovidesufcientfreshairintakeareaandexhaustairoutletarea.Natural
ormechanicalmeansshallbeprovidedtosupplyandexhaustatleast4CFM/1000BTU/hoftotalgasinput
ofheatersinstalled.Exhaustopeningsfortheremovalofueproductsmustbeabovethelevelofthe
heater(s).
Whereinsufcientairmovementexists,inducedairdisplacementisrequired.Abalancedsystemis
essentialtoavoidnegativebuildingpressurewhichcausesexcessiveinltration,unfavorabledraftsand
affectscombustionefciency.
Airdisplacementmaybeaccomplishedbyeithergravityormechanicalmeans.Mechanicalexhaustersare
preferredandtypicallymountedathighpointsontheroofoverwherestagnantairaccumulatesinside.For
aatroof,considerationsofprevailingwinds,highandlowpressureareas,anddistributionofairmovement
mustbetakenintoconsiderationwhenlocatingexhausters.
Bestairdistributionisaccomplishedbyusinganumberofsmallexhaustersversusonelargeexhauster.
Provideaminimumofonesquareinchofinletareaper1000BTU/hforcombustionairsupply.Inletopening
inthebuildingshouldbewelldistributed,locatedhighonthewallandshoulddirectincomingairupwardto
diluteproductsofcombustionwhilepreventingdraftsatlowerlevels.Inletsaretypically1to3sq.ft.
Incertainapplications,localcodesmayrequirethatmechanicalexhaustsystemsbeinterlockedwiththe
heaterstoenablebothtofunctionsimultaneouslyorallowcontrolofexhausterswithaceilingmounted
humidistat.
Ventilation
WARNING
!
Improperorinsufcientventilationmayresultinexplosion,re,health
problems,carbonmonoxidepoisoningordeath.Ventenclosedspacesand
buildingsaccordingtonational,state,provincialandlocalcodes.
Figure 2.6 •Hot Flue Discharge
Dischargereleasedfromside
airchannels.Keepareaclearof
gaspipingandelectricalwiring.

18
WhenvoltageisappliedtoL1andL2,acircuitiscompletedfromL1viatheblowermotortoL2.The
blowerfanismountedinthecontrolboxandratedtosupplysufcientairforcombustion.Airpressure
generatedbytheblowerwillcausethenormallyopenpressureswitchtoclose.Anothercircuitis
completedfromL1tothesparkignitionmoduleandbacktoL2.Afteraseven(7)secondpre-purge,the
sparkelectrodeandgasvalveareenergizedsimultaneously.Thetrialforignitionisfteenseconds.
Starting Circuit:
Afterignition,theamerodmonitorstheame.Aslongasaameispresent,thevalveisheldopen.Ifthe
ameislost,thecontrolactstoclosethevalvewithinonesecond,andanewtrialsequenceidenticalto
thatatstart-upisinitiated.Ifproofofameisnotestablishedwithinthe15secondtrialforignition,theunit
willretrytwoadditionaltimesbeforeenteringlockoutmode.Iflockoutoccurs,thecontrolcanberesetby
brieyinterruptingthepowersource.
Running Circuit:
3.0 Operation
3.0 Operation •SequenceofOperation
Important! Before operating the heater, conduct the following safety procedures:
 • Checkforanypossiblegasleaks.
 • Alertallpersonsaboutthehazardsofhighsurfacetemperatureandtokeepasafedistanceaway
  inordertoavoidburnsandpossibleclothingignition.
 • Providesupervisionwhenyoungchildrenareintheareaoftheheater.
• Checktomakesureclothingisn’thungfromtheheaterandthatammablematerialsarenot 
  placedonorneartheheater.
 • Checkthatallguardsorprotectivedevicesareinplaceandsecure.
 • Checkthehoseassemblyforexcessiveabrasion,wearordamage.Ifnecessaryreplace.
  ThereplacementhosemustbethatspeciedbyDetroitRadiantProducts.
 • Checkcontrolcompartment,burnersandcirculatingairpassagesfordebris.Ifnecessary,clean 
  thedebris.
WARNING
!
Improperoperationoftheheatermayresultinexplosion,re,shockand
carbonmonoxidepoisoning.Followallguidelinesandwarningsinthismanual
andnational,state,provincialandlocalcodes.Alwaysconductsafetychecks
beforeoperatingtheheater.Donotoperatetheheaterinunsafeconditions.
Sequence of Operation:

G
BK
BK BK
O
W
W
W
W
W
BK
BK
BK
BK
BK
G
BK
BLOWER
MOTOR
PRESSURE
SWITCH DSI MODULE
(120VAC)
THERMAL FUSE
DOOR SWITCH
L1 (120VAC)NEUTRAL
ELECTRODE
ASSEMBLY
GAS VALV E
HIGH VOLTAGE
SENSE
NEUTRAL
THERMOSTAT
VALVE
GROUND
NEUTRAL
BLOWER
MOTOR
PRESSURE
SWITCH DSI MODULE
(120VAC)
THERMAL FUSE
DOOR SWITCH
L1 (120VAC)NEUTRAL
ELECTRODE
ASSEMBLY
GAS VALV E
HIGH VOLTAGE
SENSE
NEUTRAL
THERMOSTAT
VALVE
GROUND
NEUTRAL
G
BK
BK
BK
G
BK BK
O
W
W
W
W
W
BK
BK
BK
W
24V
(FIELD SUPPLIED
N.O. RELAY
19
Wiring Diagrams
Figure 3.2•PHSeries120VACwith24VACcontrol
Figure 3.1•PHSeries120VAC
Ampdraw:
24VAC-.10starting.
120VAC-.25starting,.24running.
Ampdraw:
120VAC-.25starting,.24running
3.0 Operation •WiringDiagrams
Lighting Instructions:
1
 Rotateheater’svalveknobto“ON”position.
2 Closeelectricalcircuit(usuallythermostat).
3 Iftheheaterfailstolight,turn“OFF”gas,openelectricalcircuitandwait5minutesbefore  
 repeating.
Shutdown Instructions:
1
 Openelectricalcircuit(usuallythermostat).
2 Turnoffelectricalpowerifserviceistobeperformed.
3 Rotateheater’svalveknobto“OFF”position.

NOTICE
20
4.0 Maintenance
WARNING
!
4.0 Maintenance
Alwayswearclothingthatprotectsthebodyanduseprotectiveglasseswhen
maintainingtheheater.
Electricalshockorexplosionmayoccurwhenconductingmaintenancewhile
theheaterisconnectedtothepowersourceandgassupply.Disconnect
powerandgassupplytoheaterbeforeservicing.
Burnermalfunctionmayresultinexplosionorre.Neveroperatetheheaterif
thereareanysignsofmalfunction,excessivewearordamage.Calla
professionalforassistance.
Before each use:
 • Checkthegassupplylineandhoseassemblyforanypossibleleaksordamage.
 • Checkheaterelementsfordebris.Visuallycheckburnerames.
 • Keeptheheatedareaclearandfreeofcombustiblematerials,gasolineandammablevaporsand
  liquids.Ensurethereisnoobstructionoftheowofcombustionandventilation.
Periodic maintenance:
• Cleantheheaterwithcleaningagentssuitablefortheunit’sconstructionmaterial(i.e.,stainless 
  steelcleaner).
 • Lubricatemovingparts.
 • Inspectthegassupplypipingsystemforsignsofcorrosionorfailure.Replaceifnecessary.
Beforeconductingmaintenanceontheheaterdisconnectthepowerandgassupply.Whenpressure
testingthegassupplypipingsystemfollowtheseguidelines:
 • Atatestpressureinexcessof1/2psig(3.5kPa)theheaterandballshutoffvalvemust  
  bedisconnectedfromthegassupplypipingsystemduringanypressuretestingofthesystem.
 • Atatestpressureequaltoorlessthan1/2psig(3.5kPa)theheatermustbeisolatedfromthe
  gassupplypipingsystembyclosingit’sindividualmanualshutoffvalveduringanypressuretesting
  ofthegassupplypipingsystem.
Cleaning the main burner:
1
Gentlyuseanairhosetoblowanyaccumulateddustand/ordirtofftheheater.Air hose pressure
should not exceed 30 psig.
2 Gently,passtheairhoseovertheentireexposedareaoftheceramic.A distance of 2’ to 4’ from
the unit is recommended.
3 Gentlyplacetheairhoseoutletintotheventuritubeandallowtheairtoowforapproximatelyoneminute.
Duringlongperiodsofnon-usage,removeorcoverheaterwithapolyethylenebagandshutoffgas
supply.Iffurtherservicetotheheaterisdesired,contactyourrepresentativeorthefactory.
Cleaningtheheaterelementswithhighpressureairmaycausedamagetotheelementsandequipment
failure.Donotblowoutheatingelementswithhighpressureair.