Pennant PNCV User manual

Installation and Operation Instructions Document 1373A

H2379700A

Installation and Operation

Instructions for

PENNANT™

includes LOW TEMP PENNANT

Hydronic Boiler

Model PNCH

Water Heater

Model PNCV

Sizes 500-2000

U.S. Reg. 2,765,423

WARNING

If the information in this manual is not

followed exactly, a re or explosion may

result causing property damage, personal

injury or loss of life.

Do not store or use gasoline or other

ammable vapors and liquids in the vicinity

of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not

use any phone in your building.

• Immediately call your gas supplier from a

nearby phone. Follow the gas supplier's

instructions.

• If you cannot reach your gas supplier, call

the re department.

Installation and service must be performed

by a qualied installer, service agency, or gas

supplier.

AVERTISSEMENT

Assurez-vous de bien suivres les instructions

données dans cette notice pour réduire au

minimum le risque d’incendie ou d’explosion

ou pour éviter tout dommage matériel, toute

blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inammables dans

le voisinage de cet appareil ou de tout autre

appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d’allumer d’appareils.

• Ne touchez à aucun interrupteur. Ne pas vous

servir des téléphones dansle bâtiment où vous

vous trouvez.

• Appelez immédiatement votre fournisseur de

gaz depuis un voisin. Suivez les instructions du

fournisseur.

• Si vous ne pouvez rejoindre le fournisseur de

gaz, appelez le sservice des incendies.

L’installation et l’entretien doivent être assurés par

un installateur ou un service d’entretien qualié ou

par le fournisseur de gaz.

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualied in hot water boiler installation and maintenance. Improper installation and/or operation could

create carbon monoxide gas in ue gases which could cause serious injury, property damage, or death.

Improper installation and/or operation will void the warranty. For indoor installations, as an additional

measure of safety, Laars strongly recommends installation of suitable Carbon Monoxide detectors in the

vicinity of this appliance and in any adjacent occupied spaces.

LAARS Heating Systems

Page 2

TABLE OF CONTENTS

SECTION 1 General Information ............................4

1.A Introduction............................................................... 4

1.B Warranty...................................................................5

1.C ModelIdentication(Nomenclature)......................... 5

1.D Dimensions............................................................... 6

1.E Locating the Appliance ............................................. 7

1.F LocatingPump-MountedWaterHeaterwith

 RespecttoStorageTank(s)...................................... 7

1.G LocatingPump-MountedBoilerwithRespect

 toReturn/SupplyHeader.......................................... 7

1.H LocatingApplianceforCorrectHorizontal

Vent/DuctedAirDistanceFromOutsideWall........... 8

1.I InstallationKit ........................................................... 8

SECTION 2 Venting and Combustion Air .............9

2.A CombustionAir ......................................................... 9

2.A.1 CombustionAirFromRoom ..................................... 9

2.A.2 IntakeCombustionAir .............................................. 9

2.B Venting.................................................................... 10

2.B.1 VentCategories...................................................... 10

2.B.2 Category I Vent....................................................... 10

2.B.3 CommonVentingSystems ......................................11

2.B.4 Category III Vent..................................................... 13

2.C LocatingVent&CombustionAirTerminals............. 13

2.C.1 SideWallVentTerminal.......................................... 13

2.C.2 SideWallCombustionAirTerminal......................... 15

2.C.3 VerticalVentTerminal............................................. 15

2.C.4 VerticalCombustionAirTerminal............................ 15

2.D CommonVentTest—Boilers................................. 15

2.E VentTerminalsforOutdoorUnits............................ 16

SECTION 3 Gas Supply and Piping .....................17

3.A GasSupplyandPiping........................................... 17

SECTION 4 Water Connections BOILER

or WATER HEATER................18

4.A Boiler ..................................................................... 18

4.A.1 HeatingSystemPiping:

HotSupplyConnections—Boiler .......................... 18

4.A.2 ColdWaterMake-Up—Boiler ............................... 18

4.A.3 WaterFlowRequirements—Boiler ........................ 18

4.A.4 WaterFlowRequirements—

LowTemperaturePennantBoilers ........................ 18

4.A.5 FreezeProtection—Boiler .................................... 19

4.A.6 FillingtheBoilerSystem......................................... 22

4.B Water Heaters ....................................................... 24

4.B.1 WaterSystemPiping—WaterHeater .................... 24

4.B.2 HotWaterSupplyPiping—WaterHeater............... 25

4.B.3 WaterFlowRequirements—WaterHeater ............ 25

4.B.4 CombinedWaterHeating(potable)and

SpaceHeating—WaterHeater............................. 25

4.B.5 FreezeProtection–WaterHeater........................ 25

4.B.6 FillingtheWaterHeaterSystem............................. 30

SECTION 5 Electrical Connections.....................31

5.A InstallationWarnings .............................................. 31

5.B LineVoltageConnections....................................... 31

5.B.1 MainPower............................................................. 31

5.B.2 PumpPower........................................................... 31

5.B.3 Boiler/HeaterPump ............................................... 31

5.B.4 AuxiliaryPowerOutput........................................... 32

5.C LowVoltageConnections....................................... 32

5.C.1 FieldWiring-Inputs................................................ 32

5.C.1.a SafetyInterlocks..................................................... 32

5.C.1.b Boiler/HeaterHeatDemands.................................. 32

5.C.1.c FieldInputs(Open/Closed)..................................... 32

5.C.1.d TemperatureSensors ............................................. 32

5.C.1.e Analog(BAS)Input................................................. 33

5.C.2 FieldWiring-Outputs............................................ 33

5.C.2.a DryContacts........................................................... 33

5.C.2.b CascadeRS485 ..................................................... 34

5.C.2.c BASRS485(BACnetMS/TPorModbus)............... 34

5.C.2.d 24VAC ....................................................................34

5.D CascadeWiringConnections ................................. 35

5.E WiringDiagram...................................................... 36

5.F LadderDiagram...................................................... 38

SECTION 6 Touchscreen and System Ops ........40

6.A The Home Screen................................................. 40

6.A.1 HomeScreenStatusWindow................................. 40

6.A.2 HomeScreenActiveIcons ..................................... 41

6.B LOGIN, Lock / Unlock Display Screen................ 42

6.C Keypad Operations............................................... 43

6.D Quick Start .......................................................... 44

6.D.1 CH/DHW............................................................... 44

6.D.1.a CH1/DHW11.......................................................... 44

6.D.1.b CH2/DHW22.......................................................... 44

6.D.2 DHW/DHW3 .......................................................... 45

6.D.3 OutdoorReset ....................................................... 45

6.D.4 WarmWeatherShutDown................................... 45

6.D.5 Anti-ShortCycle..................................................... 46

6.D.6 Time&Date........................................................... 46

6.E Congure Screen......................................47

6.E.1 CH/DHW................................................................ 47

6.E.1.a CH1/DHW1............................................................. 47

6.E.1.b AdditionalSettings................................................. 50

6.E.2 CH2/DHW2............................................................. 50

6.E.3 DHW/DHW3 .......................................................... 51

6.E.4 OutdoorReset ....................................................... 51

Pennant (500-2000)Page 3

6.E.5 Cascade ........................................................... 53

6.E.5.a CongureLeadUnit................................................ 53

6.E.5.b CongureLagUnit.................................................. 54

6.E.5.c CascadeCH ........................................................... 55

6.E.5.d CascadeDHW........................................................ 56

6.E.5.e CascadeRotation.................................................. 56

6.E.5.f CascadeRedundancy ............................................ 57

6.E.5.g CascadeHybrid.................................................... 57

6.E.6 Pumps ...................................................................58

6.E.7 Firing Rate ............................................................. 58

6.E.8 TempLimits ........................................................... 59

6.E.9 External .................................................................59

6.E.9.a External–RemoteSetPoint .................................. 60

6.E.9.b ExternalFiringRate................................................ 61

6.E.10 SettingtheTimeandDate..................................... 62

6.E.11 Miscellaneous Features ................................. 62

6.E.11.a MixingValve.LowTempPennant.......................... 62

6.E.11.b Anti-ShortCycle..................................................... 63

6.E.11.c WirelessSetup ....................................................... 63

6.E.11.d WarmWeather....................................................... 63

6.E.11.e COMPort............................................................... 64

6.E.11.f TemperatureConversion ....................................... 65

6.E.11.g FrostProtection ..................................................... 65

6.E.12 Login ......................................................................65

6.F Service Screens.................................................... 66

6.F.1 Burner..................................................................... 66

6.F.2 DigitalI/O(Input/Output).................................... 66

6.F.3 AnalogI/O............................................................... 67

6.F.4 ScreenSettings ...................................................... 67

6.F.5 History ....................................................................68

6.F.6 Restart.................................................................... 68

6.F.7 FactoryReset ......................................................... 68

6.G Messages and USB .............................................. 68

6.G.1 Messages ............................................................... 68

6.G.2 USBFunctionality................................................... 69

6.H Active Demands.................................................... 70

6.I The Navigation Bar............................................... 70

6.J Date and Time Display Area ................................ 70

SECTION 7 Sequence of Operation ...................71

7.A RestartingthePennant........................................... 71

7.B SequenceofOperation .......................................... 71

7.C ShuttingDownthePennant.................................... 72

SECTION 8 Burner Set Up ....................................73

8.A SetUpfor0to2500FeetAltitude .......................... 73

8.B SetUpforHighAltitude(>2500Feet) .................. 73

SECTION 9 Maintenance......................................75

9.A SystemMaintenance.............................................. 75

9.B ApplianceMaintenanceandComponentDescription75

9.B.1 Burners................................................................... 75

9.B.2 Filter........................................................................75

9.B.3 GasValves ............................................................. 75

9.B.4 ManualResetHighLimitControl............................ 75

9.B.5 AutomaticResetHighLimitControl........................ 76

9.B.6 Controller................................................................ 76

9.B.7 Ignitors.................................................................... 77

9.B.8 IgnitionSensors...................................................... 77

9.B.9 Transformer ............................................................ 77

9.B.10 Blowers................................................................... 77

9.B.11 FlowSwitch ............................................................ 77

9.B.12 HeatExchangerCoil.............................................. 77

SECTION 10 Trouble Shooting ............................78

10.A ResolvingLockouts ................................................ 78

10.B DelayedIgnition—PossibleCauses ..................... 79

10.C ShortCycling—Boiler ........................................... 79

10.D ShortCycling—WaterHeater ............................... 79

10.E HighGasConsumption .......................................... 79

10.F TroubleshootingErrorsandLockouts..................... 80

10.G ParameterTables ................................................... 82

10.G.1 BoilerParameters(includingLowTemp)................ 82

10.G.2 WaterHeaterParmeters(includingLowTemp)...... 86

10.G.3 ModbusMemoryMap............................................. 90

10.G.4 BACnetMSTPMemoryMap .................................. 92

SECTION 11 Replacement Parts .........................94

11.A GeneralInformation................................................ 94

11.B PartsList.................................................................94

11.C PartsIllustrations.................................................. 100

6.E Congure Screen

(continued)

LAARS Heating Systems

Page 4

WARNING

ThePennanthydronic,boilerorwaterheatermust

beinstalledinaccordancewiththeprocedures

detailedinthismanual,ortheLaarsHeating

Systemswarrantymaybevoided.Theinstallation

mustconformtotherequirementsofthelocal

jurisdictionhavingauthority,and,intheUnited

States,tothelatesteditionoftheNationalFuel

GasCode,ANSIZ223.1/NFPA54.InCanada,the

installationmustconformtothelatesteditionof

theNaturalGasandPropaneInstallationCode,

CSAB149.1and/orlocalcodes.Whererequiredby

theauthorityhavingjurisdiction,theinstallationof

PennantappliancesmustconformtotheStandard

forControlsandSafetyDevicesforAutomatically

FiredBoilers,ANSI/ASMECSD-1.Any

modicationstotheboiler,itsgascontrols,orwiring

mayvoidthewarranty.Ifeldconditionsrequire

modications,consultthefactoryrepresentative

beforeinitiatingsuchmodications.

AVERTISSEMENT

Anderéduireauminimumlesrisquesde

commotionélectrique,defeuoud’autrenature,

quipourraientcauserdesdommagesmatériels,

desblessuresoudesaccidentsmortels,les

chaudièresàeauchaudeouleschauffe-eau

Pennant doivent êtreinstallésconformémentaux

directivesdétailléescontenuesdanscemanuel,à

défautdequoilagarantiefournieparLaarsHeating

Systemsseraitannulée.L’installationdoitêtre

conformeauxexigencesdelaréglementationlocale

envigueuret,auxÉtats-Unis,àl’éditionlaplus

récenteduNaturalFuelGasCode(Codepourle

gazcombustiblenaturel)ANSIZ223.1/NFPA54.Au

Canada,l’installationdoitrespecterlesexigences

delaplusrécenteéditionduCoded’installationdu

gaznatureletdupropaneCSAB149.1,et/oudes

codeslocauxdeconstructionenvigueur.Lorsque

laréglementationlocalel’exige,l’installationdes

appareilsélectroménagersPennantdoitrespecter

lesexigencesduStandardforControlsandSafety

DevicesforAutomaticallyFiredBoilers(Codepour

leséquipementsdecommandeetdesécuritédes

chaudièresàcombustionautomatique),ANSI/

ASMECSD-1.Toutemodicationapportéeàla

chaudière,auxrégulateursdegazouaucâblage,

peutcompromettrelagarantie.Sicertaines

conditionsparticulièresrendentdesadaptations

nécessaires,consulterunreprésentantdufabricant

avantd’entreprendrecesmodications.

SECTION 1 General Information

USING THIS MANUAL– Because the

Pennant Boilers and Pennant Water Heaters are

identical appliances, with the exception of materials

of manufacture, labels and ultimate use application,

this manual provides information for the proper

installation, operation and maintenance of both

products. Where differences exist between the

application of the appliances and their operation,

the sections pertinent to only one appliance or the

other will be so identied.

In the Commonwealth of Massachusetts, this

appliance must be installed by a licensed plumber or

gas tter.

1.A Introduction

This manual provides information necessary

for the installation, operation, and maintenance of

Laars Heating Systems Pennant appliances (including

the Low Temp Pennant). Read this manual carefully

before installation.

All application and installation procedures

should be reviewed completely before proceeding with

the installation. Consult the Laars Heating Systems

factory, or local factory representative, with any issues

or questions regarding this equipment. Experience

has shown that most operating issues are caused by

improper installation.

The Pennant appliance is protected against over

pressurization. A pressure relief valve is tted to all

appliances. It is installed on the outlet header, at the

water outlet of the appliance.

IMPORTANT:Theinletgaspressuretotheappliance

mustnotexceed13"w.c.(3.2kPa).

All installations must be made in accordance with:

1) In the U.S., the " National Fuel Gas

Code"ANSI Z223.1/NFPA54, Latest Edition and all

applicable local codes as required by the Authorities

Having Jurisdiction (AHJ), or

2) In Canada, the "Natural Gas and Propane

Installation Code", CSA B149.1, latest edition and all

applicable local codes as required by the AHJ.

All electrical wiring is to be done in accordance with:

1). In the U.S., the "National Electrical Code"

(NEC), ANSI/NFPA 70, latest Edition and all

applicable local codes as required by the AHJ, or

2). In Canada, the “Canadian Electrical Code

- Part 1”, CSA STD. C22.1 and all applicable local

codes as required by the AHJ.

This appliance must be electrically grounded in

accordance with the applicable codes and standards

referenced above.

Pennant (500-2000)Page 5

1.B Warranty

Laars Heating Systems’appliances are covered

by a limited warranty. Owners should submit online

warranty registration at www.Laars.com.

All warranty claims must be made to an authorized

Laars Heating Systems representative, directly to

Customer Service, or online at www.Laars.com.

Claims must include the serial number and model

number (this information can be found on the rating

plate), installation date, and name of the installer.

Shipping costs are not included in the warranty

coverage.

1.C Model Identication (Nomenclature)

TACONORMALWATERPUMP

SERIES USAGE SIZE FUEL ALTITUDE

MODE

LOCATION FIRING REVISION HEAT

CODES

PN A

PNC H

0500

NA C C

EXCHANGER OPTION

PN:

IST&2NDCHARACTERS(MODELSERIES)

PENNANT

3RDCHARACTER(MODELEFFICIENCY)

MIDEFFICIENCY(NON-CONDENSING)

4THCHARACTER(USAGE)

HYDRONICH:

V: VOLUMEWATER

500,000BTU/HRINPUT

0500:

0750: 750,000BTU/HRINPUT

1,000,000BTU/HRINPUT1000:

1500:

5THTHROUGH8THCHARACTERS(SIZE)

P: PROPANE

1,500,000BTU/HRINPUT

9THCHARACTER(FUEL)

NATURALGAS

10THCHARACTER(ALTITUDE)

0-10,000FEET(0-3050M)

11THCHARACTER(LOCATION)

TWO-STAGE(PNCH&PNCV500-750)

CONVERTIBLE(INDOOR/OUTDOOR)

12THCHARACTER(FIRINGMODE)

ON-OFF(PUMPMOUNTEDWITHMIXINGSYSTEMS)

13THCHARACTER(REVISION)

ENGINEERINGREVISIONCHARACTER,INSEQUENCE

14THCHARACTER(HEATEXCHANGER)

CSD-1,FM,ILJ:

STANDARDUNIT

TACOHARDWATERPUMP(VOLUMEWATERONLY)

15THCHARACTER(CONTROLOPTIONS)

2,000,000BTU/HRINPUT2000:

POOLHEATERP:

THREE-STAGE(PNCH&PNCV1000)

FOUR-STAGE(PNCH&PNCV1250-2000)

NOPUMP

16THCHARACTER(PUMPOPTIONS)

(STDPNCV,OPTPNCH-PNCP-PM)

TACOSOFTWATERPUMP(VOLUMEWATERONLY)S:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

UNLESSOTHERWISESPECIFIED:

DONOTSCALEDRAWING.

THIRDANGLEPROJECTION.

DIMENSIONSAREININCHES.

FINISH:

FMA58B

MATERIAL:

HEATTREAT:

206073

DWG

SH REV

206073

DWGNO:SIZE: SOFTWARE:

APPR

SCALE:NONE

DATE

10/14/03

ANGULAR

± 1°

TOLERANCES:

DECIMAL

.X = ± .1

DRAFT

CHECK

APPROVALS

.XXX = ± .010

.XX = ± .03 ± 1/8

JMADDOCK

FRACTIONAL

PENNANT

MATRIX,MODELDESIGNATION

TITLE:

REV:

SHEET1OF1

CHANGE:

REV

ECR

16-154N-02

DRAFT

REVISIONS

CHECK APPR RELDATE

14thCHARACTER:ADD"5"INDICATINGHLWSTAMPVERSIONOF"P"

N/A

PURPOSEEXCEPTASSPECIFICALLYAUTHORIZED

HEREINAREPROPRIETARYTOLAARSHEATINGSYSTEMS

CO.ANDSHALLNOTBEREPRODUCED,TRANSFERRED

TOOTHERDOCUMENTS,USEDORDISCLOSED

THISDOCUMENTANDTHEINFORMATIONCONTAINED

INWRITINGBYLAARSHEATINGSYSTEMCO..

TOOTHERSFORMANUFACTURINGORANYOTHER

JM5-23-17

10/16/03

BLW

1250:

1750:

1,250,000BTU/HRINPUT

1,750,000BTU/HRINPUT

7005

0100

2105

5100

7105

0200

BP5-23-17 SH5-23-17

B&GSOFTWATERPUMP(VOLUMEWATERONLY)

B: B&GNORMALWATERPUMP

C: B&GHARDWATERPUMP(VOLUMEWATERONLY)

WCB

BRADFORDWHITEPRIVATELABELBW:

PENTAIRPOOLHEATER,PRIVATELABELblank:

PPENTAIRPOOLHEATER,PRIVATELABEL

PENTAIRPOOLHEATER,PRIVATELABEL

GLASS-LINEDCASTIRON/CUPRONICKEL/BRONZETRIM

HLWSTAMPEDVERSIONOF"P"HEATEXCHANGER(OPTPNCV,N/APNCH-PNCP-PM)

GLASS-LINEDCASTIRON/CUPRONICKEL(OPTPNCH,N/APNCV-PNCP-PM)

GLASS-LINEDCASTIRON/COPPER(STDPNCH,N/APNCV-PNCP-PM)

GLASS-LINEDCASTIRON/COPPER/BRONZETRIM(STDPNCP-PM,N/APNCV,OPTPNCH)

Some accessory items are shipped in separate

packages. Verify receipt of all packages listed on

the packing slip. Inspect everything for damage

immediately upon delivery, and advise the carrier of

any shortages or damage. Any such claims should be

led with the carrier. The carrier, not the shipper, is

responsible for shortages and damage to the shipment

whether visible or concealed.

LAARS Heating Systems

Page 6

Figure 1. Dimensional Data.

SHIPPINGWEIGHT*

SIZE lbs. kg

500 640 290

750 735 333

1000 830 376

1250 925 420

1500 1020 463

1750 1115 506

2000 1210 549

*Add75to200lbs(

34 to 91 kg

),

dependingonsize,

forpump-mountedunits.

ØØ

Size A BC D E F G H

Air

Conn.

Vent

Conn.

Horiz.

Vent

Pipe

500 33½ 85 15¾ 40 5¾ 15 29¾ 76 33¾ 86 7¾ 20 8¾ 22 46 117 615 820 615

750 45½ 116 21¾ 55 5¾ 15 29¾ 76 33¾ 86 7¾ 20 8¾ 22 58 147 820 10 25 820

1000 57½ 146 28¾ 73 5¾ 15 29¾ 76 33¾ 86 7¾ 20 718 70 178 820 10 25 820

1250 68 172 34 86 101∕826 30¾ 78 311∕879 8¾ 22 8¾ 22 80 203 12 30 12 30 10 25

1500 78½ 199 39¾ 101 101∕826 30¾ 78 311∕879 8¾ 22 8¾ 22 91 231 12 30 12 30 10 25

1750 89 226 44½ 113 101∕826 30¾ 78 311∕879 8¾ 22 8¾ 22 101 256 12 30 14 36 12 30

2000 99½ 253 49¾ 126 101∕826 30¾ 78 311∕879 8¾ 22 8¾ 22 112 284 12 30 14 36 12 30

*AirandventconnectionsmaybeontoporbackofthePennant,andareeldconvertible.Dimensionsininches cm

1.D Dimensions

Pennant (500-2000)Page 7

1.E Locating the Appliance

The appliance should be located to provide

clearances on all sides for maintenance and inspection.

It should not be located in an area where leakage of

any connections will result in damage to the area

adjacent to the appliance or to lower oors of the

structure.

When such a location is not available, it is

recommended that a suitable drain pan, adequately

drained, be installed under the appliance.

The appliance is design certied by CSA-

International for installation on combustible ooring;

in basements; in closets, utility rooms or alcoves.

Pennant Boilers or Water Heaters must never be

installed on carpeting. The location for the appliance

should be chosen with regard to the vent pipe lengths

and external plumbing. The unit shall be installed such

that the gas ignition system components are protected

from water (dripping, spraying, rain, etc.) during

operation and service (circulator replacement, control

replacement, etc.). When vented vertically, the Pennant

must be located as close as practical to a chimney or

outside wall. If the vent terminal and/or combustion

air terminal terminate through a wall, and there is

potential for snow accumulation in the local area, both

terminals should be installed at an appropriate level

above grade.

The dimensions and requirements that are shown

in Table 2 should be met when choosing the locations

for the appliance.

1.F Locating Pump-Mounted Water

Heater with Respect to Storage Tank(s)

For best results, a pump-mounted Pennant water

heater should be located within 15 feet (4.6m) of the

storage tank(s). The pump is sized for 30 feet (9.1m)

of piping.

If the appliance must be installed with longer

piping runs, then larger diameter pipe or tubing shall

be used. Consult the factory for assistance.

1.G Locating Pump-Mounted Boiler with

Respect to Return/Supply Header

For the best results, a pump-mounted Pennant

Boiler should be located within 15 feet (4.6m) of the

supply and return headers. The pump is sized for 30

feet (9.1m) of piping.

If the appliance must be installed with longer

piping runs, then larger diameter tubing shall be used.

Consult the factory for assistance.

   HORIZONTAL INTAKEAIR

  VENTCOLLAR VENTPIPE PIPE MAX.PIPE MAX.NO. SIDEWALL SIDEWALL

 SIZE SIZE DIAMETER DIAMETER LENGTH OFELBOWS VENT COMBUSTION

       TERMINAL AIRTERMINAL

in. cm in. cm in. cm ft. mPARTNUMBER PARTNUMBER

500 820 615 615 50 15 3 CA001401 CA20260701

750 10 25 820 820 50 15 3 CA001402 CA20260703

1000 10 25 820 820 50 15 3 CA001402 CA20260703

1250 12 30 10 25 12 30 50 15 3 CA001405 CA20260706

1500 12 30 10 25 12 30 50 15 3 CA001405 CA20260706

1750 14 36 12 30 12 30 50 15 3 CA001404 CA20260706

2000 14 36 12 30 12 30 50 15 3 CA001404 CA20260706

Table 1. Horizontal Vent / Combustion Air Parameters.

  REQUIRED RECOMMENDED

 APPLIANCE CLEARANCEFROM SERVICEACCESS

 SURFACE COMBUSTIBLEMATERIAL CLEARANCE

inches cm inches cm

 LeftSide 12.5 24 61

 RightSide 12.5 24 61

 Top 12.5 12 30

 Back 12.5 12** 30**

Front 12.5 36 91

Vertical

 (Category1) 6* 15.2*

Vent

 Horizontal perUL1738venting

 (Category3) systemsupplier’s

 Vent instructions

*1"(2.5cm)whenb-ventisused.

**Whenventand/orcombustionairconnectstotheback,

recommendedclearanceis36"(91cm).

Table 2. Clearances.

LAARS Heating Systems

Page 8

1.H Locating Appliance for Correct

Horizontal Vent/Ducted Air Distance

From Outside Wall

The forced draft combustion air blower/blowers

in the appliance has/have sufcient power to pull air

and vent properly when the following guidelines for

horizontal air and vent are followed (see Table 1 on

page 7).

NOTE:Onallmodelsizes,theventcollarsizeis

largerthanthesizeoftheventpipethatcanbeused.

Ventcollarsizeandhorizontalpipediameterscan

befoundinTable1Thelargerventcollarsizeisto

accommodateCategoryI(vertical)ventsystems.

NOTE:Whenlocatedonthesamewall,thePennant

combustionairintaketerminalmustbeinstalled

aminimumof12"(30cm)belowtheexhaustvent

terminalandseparatedbyaminimumof36inches

(91cm)horizontally.

The air intake terminal must be installed high

enough to avoid blockage from snow, leaves and

other debris.

All units are shipped with an Installation Kit which

contains the following items.

 Description Qty

1. TerminalBlockInsertion/RemovalTools 1

2. Well,Immersion,for3/16"Bulb 1

3. Well,Immersion,1/2"NPT 1

4. Sensor,Outlet,Thermistor,Dual,10K, 1

5. TaperedRubberStopper 1

6. Resistor,1.5K,1/4Watt,250V,Axial 2

7. Bushing,Nylon 3

8. CapillaryClamp 1

9. OutdoorSensor 1

10.Sensors,Inlet,Temperature,Water 3

11. Label,Box,RemoteSensor 1

1.I Installation Kit

Figure 2. Installation Kit Components

Pennant (500-2000)Page 9

  EACHOPENING*

 SIZE SQUARE INCHES SQUARE CM

500 125 807

750 188 1213

1000 250 1613

1250 313 2020

1500 375 2420

1750 438 2826

2000 500 3226

*NetFreeAreainSquareInches/Squarecm

Areaindicatedisforoneoftwoopenings;oneatoorleveland

oneattheceiling,sothetotalnetfreeareacouldbedoublethe

guresindicated.

Thischartisforusewhencommunicatingdirectlywiththe

outdoors.Forspecialconditionsandalternatemethods,referto

thelatesteditionofANSIZ223.1.

Note:Checkwithlouvermanufacturersfornetfreeareaof

louvers.Correctforscreenresistancetothenetfreearea

ifascreenisinstalled.Checkalllocalcodesapplicableto

combustionair.

Table 3. Combustion Air Openings.

with the outdoors. When directly communicating

with the outdoors, or when communicating to the

outdoors through vertical ducts, each opening shall

have a minimum free area of 1 square inch per 4000

Btu/hr (5.5 square cm/kW) of total input rating of all

equipment in the enclosure. When communicating to

the outdoors through horizontal ducts, each opening

shall have a minimum free area of not less than

1 square inch per 2000 Btu/hr (11 square cm/kW) of

total input rating of all equipment in the enclosure.

Table 3 shows data for this sizing method, for each

Pennant model.

Method 2: One permanent opening, commencing

within 12 inches (30 cm) of the top of the enclosure,

shall be permitted. The opening shall directly

communicate with the outdoors or shall communicate

through a vertical or horizontal duct to the outdoors

or spaces that directly communicate with the outdoors

and shall have a minimum free area of 1 square inch

per 3000 Btu/hr (7 square cm/kW) of the total input

rating of all equipment located in the enclosure. This

opening must not be less than the sum of the areas of

all vent connectors in the conned space.

Other methods of introducing combustion and

ventilation air are acceptable, providing they conform

to the requirements in the applicable codes listed

above.

In Canada, consult local building and safety

codes or, in absence of such requirements, follow CSA

B149.1.

2.A.2 Intake Combustion Air

The combustion air can be taken through the

wall, or through the roof. When taken from the wall, it

SECTION 2 Venting and

Combustion Air

2.A Combustion Air

Pennant boilers and water heaters must have

provisions for combustion and ventilation air in

accordance with Section 5.3, Air for Combustion and

Ventilation, of the National Fuel Gas Code, ANSI

Z223.1, or Sections 7.2, 7.3 or 7.4 of CSA B149.1,

Installation Codes, or applicable provisions of the

local building codes.

A Pennant appliance may receive combustion

air from the space in which it is installed, or it can be

ducted directly to the unit from the outside. Ventilation

air must be provided in either case.

2.A.1 Combustion Air From Room

In the United States, the most common

requirements specify that the space shall communicate

with the outdoors in accordance with method 1 or 2,

which follow. Where ducts are used, they shall be of

the same cross-sectional area as the free area of the

openings to which they connect.

Method 1: Two permanent openings, one

commencing within 12 inches (30 cm) of the top

and one commencing within 12 inches (30 cm) of

the bottom, of the enclosure shall be provided. The

openings shall communicate directly, or by ducts,

with the outdoors or spaces that freely communicate

WARNING

Forindoorinstallations,asanadditionalmeasure

ofsafety,Laarsstronglyrecommendsinstallationof

suitableCarbonMonoxidedetectorsinthevicinity

ofthisapplianceandinanyadjacentoccupied

spaces.

AVERTISSEMENT

Pourdesinstallationsintérieures,Laars

recommandefortement,commemesuredesécurité

supplémentaire,l’installationdedétecteursde

monoxydedecarboneadaptésdanslevoisinage

del’appareiletdanschacunedespièceshabitées

adjacentes.

LAARS Heating Systems

Page 10

Figure 3. Combustion Air and Vent Through Roof.

must be taken from out-of-doors by means of the Laars

horizontal wall terminal (see Table 1). When taken

from the roof, a eld-supplied rain cap or an elbow

arrangement must be used to prevent entry of rain

water (see Figure 3).

Use single-wall galvanized pipe, per Table 4, for

the combustion air intake (see Table 1) for appropriate

size. Route the intake to the heater as directly as

possible. Seal all joints with tape. Provide adequate

hangers. The unit must not support the weight of

the combustion air intake pipe. Maximum linear

pipelength allowed is 50 feet (15.2m). Three elbows

have been calculated into the 50-foot (15.2m) linear

run. Subtract 10 allowable linear feet (3.0m) for every

additional elbow used (see Table 1). When fewer than

3 elbows are used, the maximum linear pipe length

allowed is still 50 feet (15.2m).

The connection for the intake air pipe is on the

lter box. The Pennant appliances may have venting

and combustion air ducting attached to the top or the

back. They are shipped with the connections at the

top. For attaching either or both pipes to the back,

the mounting anges are reversible by removing the

mounting screws and orienting the anges in the

desired position. Replace the screws after positioning

anges. Run a bead of silicone around the collar and

slide the pipe over the collar. Secure with sheet metal

screws.

In addition to air needed for combustion, air

shall also be supplied for ventilation, including all air

required for comfort and proper working conditions

for personnel. The Pennant loses less than 1 percent of

its input rating to the room, but other heat sources may

be present.

TERM DESCRIPTION

 Pipe Single-wallgalvanizedsteelpipe,24gauge

  minimum(eitherinsulatedornon-insulated)

 Joint Permanentducttapeoraluminumtape

 Sealing

Table 4. Required Combustion Air Piping Material.

2.B Venting

2.B.1 Vent Categories

Depending upon desired Pennant venting, it may

be considered a Category I or a Category III appliance.

In general, a vertical vent system will be a Category

I system. However, in rare instances, a Pennant’s

vertical vent system may be considered Category

III. In the U.S., the National Fuel Gas Code (ANSI

Z223.1-Latest Edition), or in Canada the CSA B149.1

(latest edition), denes a Category I vent system, and

includes rules and tables to size these vent systems. If

the Pennant’s vertical vent system does not satisfy the

criteria for Category I venting, it must be vented as a

Category III system.

All Pennant vent systems which discharge

horizontally (without the use of a power venter) are

considered Category III vent systems.

2.B.2 Category I Vent

When vented as a category I appliance, the

vent system must conform to the National Fuel Gas

Code (ANSI Z223.1-Latest Edition) in the U.S., or

in Canada, to CSA B149.1 (latest edition). The vent

system must be sized and installed for a Category I

Fan-Assisted Appliance.

If chimney height is greater than 25 feet, or

if multiple units are vented into the same vertical

vent, a barometric damper must be installed on each

appliance, such that the ue draft does not exceed

(negative) 0.1" w.c.

If using a power venter for any type of Category

I venting, the draft should be set between (negative)

0.01 and 0.10" w.c.

This manual suits for next models

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