Dunkirk PVSB, PSB, PSB-3D, PSB-4D, PSB-5D Installation Instructions Manual

...

INSTALLATION INSTRUCTIONS

These instructions must be affixed on or adjacent to the boiler

Dml'v' ¢

MODEL PVSB

Continuous Pilot

Gas-Fired

Steam

Boilers

These Gas-Fired Water Boilers are low pressure, sectional

cast iron boilers Designed Certified by C.S.A. (Canadian Standards Association) for use with Natural and Propane Gases. They are constructed and hydrostatically tested for a maximum working pressure of 50 psi (pounds per square inch) in accordance with AS.ME. (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code Section IV Standards for cast iron heating boilers.

MODEL PSB

Electronic

Intermittent

Ignition

Warning: Improper installation, adjustment, alteration, service or maintenance can cause injury or

property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier

Boiler Ratings and Capacities ...................... 2

Before You Start........................................ 3

Locating the Boiler .................................... 3

Fresh Air for Combustion ............................ 4

Installation - System Piping ......................... 5

Chimney and Vent Pipe Connection .............. 8

Vent Damper Operation .............................. 9

Gas Supply Piping .................................... 10

Electrical Wiring ....................................... 11

Controls and Accessories - What They Do ..... 17/

For Your Safety - Read Before Operating ....... 18

Operating Your Boiler ................................ 20

Checking and Adjusting ............................. 21

Cleaning Your Boiler ................................... 22

Maintaining Your Boiler .............................. 23

Service Hints ........................................... 24

Repair Parts ............................................. 25

PRESSURE

GAUGE

r _T /_ "SWITCH I

....... SPILL

I I I_" l

WATER

I I L.E----I---- I [ ]L_\ /

LOW WATER

I _ CUT-OFF

- - -- ± _ -- PRORE

_ SW_TCH

GAS

;-.....A __ L,.E

'_'m RE_URE I

oo.TROL|

TRANSFORMER ------

_GAUGE

LOW WATER

_ $8600 CUT-OFF

VALVE

LEFT SIDE FRONT RIGHT SIDE

24"

DESIGN CERTIFIED FOR

NATURAL

AND PROPANE GAS

GAS-FIRED STEAM BOILERS

BOILER MODEL NUMBER tNATURAL GAS tPROPANE GAS

INTERMITTENT STANDING NG OF AGA HEATING NET #£T I=B=R NET

IGNITION PILOT SECTIONS INPUT CAPACITY I=B=R RATING AGA HEATING I=B=R

WITH VENT DAMPER WITH VENT DAMPER *MBH *MBH RATING,MBH PJ_IATIONS0'FT. INPUT,MBH CAPACITY,MBH RATING

*MBH

PSB-3D PSB-4D PSB-5D PSB-6D PSB-7D PSB-8D PSB-9D

PVSB-3D PVSB-4D PVSB-5D PVSB-6D PVSB-7D

PVSB-8D PVSB-9D

3 4

5 6

7 8 9

75 62 47 196 70 58

112 91 68 283 !05 85

!50 122 92 383 !40 114 187 153 115 479 !75 143

225 183 137 571 210 !71 262 2!4 161 671 245 200 299 245 184 767 280 229

DIMENSIONS

_T I=B=R (Inches)

_TI_ _. F_ F_E "A"

PJW_TION D_METER WIDTH

44 !83 5 11% 64 267 6 14½

86 358 6 !7¾

107 446 7 21 !28 533 7 24¼ 150 625 7 27½ 172 717 7 30¾

* MBH = 1,000 Btuh. Btuh = British Thermal Unit Per Hour

**Add 5V_' to height for Vent Damper.

t For altitudes above 2,000 ft. ratingsshould be reduced at the rate of 4% for each 1,O00 ft above sea level.

Heating Capacity is based on DOE {Department of Energy} test procedure

The City of New YorkMEA Number 77-91-E. The Ratingsmarked "Net I=B=RRatings" indicate the amount

of equivalent direct cast iron radiation each boiler will take care of under normal conditions and thermostatic control.

The Net I=B=R Steam Ratings shown are based on an allowance of 1.333 in accordance with the factors shown

in the t=B=RCode as published by The Hydronics Institute.

Selection of boiler size should be based upon "Net I=B=R Rating" being equal to or greater than installed radiation in square feet. Consult manufacturer before selecting a boiler

for installations having unusual piping and picku!_\ requirements.

Specifications and dimensions are subject to change without notice.

Checktobesureyouhavetherightsizeboilerbeforestartingtheinstallation. _,eeratingandcapacitytableonpreviouspage.Alsobesurethenewboileris _orthetypeofgasyouareusing.Checktheratingplateontherightsideofthe

boiler.

Youmustseethattheboilerissuppliedwiththecorrecttypeofgas,freshair forcombustion,andasuitableelectricalsupply.Also,theboilermustbecon- nededtoasuitableventingsystemandanadequatepipingsystem.Finally,a

thermostat,properlylocated,isneededforcontroloftheheatingsystem.Ifyou haveanydoubtsastothevariousrequirements,checkwithlocalauthorities

andobtainprolessionathelpwhereneeded.Takethetimetocompleteallof

thestepsforSAFEandPROPERoperationoftheheatingsystem. Ifthisboilerisinstalledinabuildingunderconstruction,specialcaremustbe

takentoinsureacleancombustionairsupplyduringtheconstructionprocess. Airborneparticulatessuchasfromdrywalldustandfromfiberglassinsulation canclogtheburnerportsandcauseincompletecombustionandsooting,

Theseboilersaredesignedforuseinclosedheatingsystemswhereallofthe

steamisreturnedtotheboilerascondensateandtheamountofmake-upwater requiredisminimal.Theseboilersarenotdesignedfororintendedforusein opensystemsofprocessapplicationsusing100%make-upwater.Damageto theboilerresultingfromsuchuseshallnotbecoveredunderthewarranty.

Whererequiredbytheauthorityhavingjurisdiction,theinstallationmustcon- formtoAmericanSocietyofMechanicalEngineersSafetyCodeforControls andSafetyDevicesforAulomaticallyFiredBoilers,No.CSD-1.

Theinstallationmustconformtotherequirementsof theauthorityhaving jurisdictionor,intheabsenceofsuchrequirements,totheNationalFuelGas

Code,ANSIZ223.1-1atestrevision. Thefollowingstepsareallnecessaryforproperinstallationandsafeoperation

ofyourboiler.

1. LOCATINGTHEBOILER 5. GASSUPPLYPIPING

2. FRESHAIRFORCOMBUSTION 6. ELECTRICALWIRING

3, INSTALLATION- SYSTEMPIPING 7. CHECKING&ADJUSTING

4. CHIMNEY& VENTPIPECONNECTION

KEEP BOILER AREA CLEAN AND FREE FROM COMBUSTIBLE MATERIALS,

GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS

1.Selectlevellocationascentralizedwithpipingsystem,andasnearchim- neyaspossible.

2.Placecratedboilerat selectedlocation,removecratebypullingcrate sidesfromtopandbottomboards.Combustiblefloors:Whenboileristo

beinstalledonacombustiblefloor,aSpecialBasePlatemustbeused-

1.46-14-031(2-6Section)or146-14-032(7-9Section).Thisboilermust notbeinstalledoncarpeting.

3.I1thisboilerisequippedwithcastironburners,it isalsoequippedwith stainlesssteelwiretiestoholdlhebackendolthecastironburnersin

placeduringshipping.Inorderto removetheburnersforcleaningor inspection,thewiretiesmustbecutandremoved.Thewiretiesare

accessedthroughthecombustionair openingonthebacksideofthe

boileratthebottomoftherearjacketpanel,andmaybecutwithanywire

cuttingpliers.Iftheboilerisinstalledatitsminimumclearancesit may bedifficultto reachthewiretiesaftertheboilerisinstalled,andthewire

tiesshouldbeculnow.Thewireliesareonlyneededduringshipping, anddo notneedtobereplaced.Boilersequippedwilh stainless

steelburnersdonothavewiretiesandthisinformationdoes notapply.

4.Boileristobelevel.Metalshimsmaybeusedunderbaselegsforfinal leveling.

5.Equipmentshallbeinstalledina Iocalioninwhichthefacilitiesforven- tilationpermitsatisfactorycombustionofgas,properventing,andmain-

tenanceofambienttemperatureatsalelimitsundernormalconditionsof use,Equipmentshallbelocatedsoasnottointerferewithpropercircu- lationofair.Whennormalinfiltrationdoesnotprovidethenecessaryair,

outsideair shall be introduced(See Page4 - "FreshAir for Combustion").

6.Adviseownerto keepairpassagesfreeofobstructions.Ventilatingand combustionairmustenterboilerroomwithoutrestrictions.

7. Theboilershallbeinstalledsuchthattheautomaticgasignitionsystem componentsareprotectedfromwater(dripping,spraying,rain,etc.)dur- ingapplianceoperationandservice(condensatetrap,controlreplace- ment,etc.).

Top

Rear Control Side

Opposite Side Front

Flue/Vent Connectol Near Boiler Piping

BoilerVolume

BoilerSize (Cu.Ft.)

3 sect. 6.3 4 sect. 8,1 5 sect, 9.9 6 sect. 11,7 7 sect. 13.5 8 sect. 15.3 9 sect. 17.2

* FOBROOMWITHSINGLEBOILERONLY

Alcove,orRoomNotLarge

InComparisonWith6oiler

6" 6"

6" 6'

7" 6" 6" 6'

18" 18'

6" 6' 1' 1"

MinimumRoomVolumeRequiredToBe

LargeRoom(Cu.Ft.)*

100.4

129.4 !58.4 187,4

216,4

245,4

274,5

RoomLargeIn

ComparisonWithBoiler

THIS UNIT MUST BESET ON A CONCRETEOR OTHER

NON-COMBUSTIBLEMATERIALBASEOR FLOOR.

?4_oaA

Provisionfor combustionandventilationair mustbe in accordancewithSection5.3, Air for CombustionandVentilation,of I

the National Fuel Gas Code, ANSIZ223.1-1atest revision, or applicable provisions of the local building codes.

WARNING

Be sure to provide enough fresh air for combustion. Enough air insures proper combustion and assures that

no hazard will develop due to the lack of oxygen.

NOTE

if you use a fireplace or a kitchen or bathroom exhaust

fan, you should install an outside air intake. These

devices will rob the boiler and water heater of combus- tion air.

Youmustprovideforenoughfreshairtoassurepropercombustion.Thefire in theboilerusesoxygen.It musthavea continuoussupply.Theairin a housecontainsonlyenoughoxygentosupplytheburnerfor ashorttime. Outsideair mustenterthehouseto replacethatusedbytheburner.Study followingexamples1and2todetermineyourfreshairrequirements.

EXAMPLE1: BoilerLocatedin UnconfinedSpace Anunconfinedspaceis definedasa spacewhosevolumeisnotlessthan 50cubicfeetper1,000Btuperhourofthetotalinputratingofallappliances

installedinthatspace. Ifyourboilerisinanopenarea(unpartitionedbasement)in aconventional house,theairthatleaksthroughthecracksarounddoorsandwindowswin usuallybeadequatetoprovideairforcombustion.Thedoorsshouldnotfit tightly.Donotcaulkthecracksaroundthewindows. Equipmentlocatedinbuildingsofunusuallytightconstructionshallbepro- videdwithairforcombustion,ventilation,anddilutionoffluegasesusing themethodsdescribedinexample2Borshallbespeciallyengineered.The authorityhavingjurisdictionmustapprovespeciallyengineeredinstalla-

tions.

EXAMPLE2: BoilerLocatedin ConfinedSpace

A.All Air fromInsidethe Building:Theconfinedspaceshallbepro-

videdwithtwopermanentopeningscommunicatingdirectlywithanaddi-

tionalroom(s)of sufficientvolumeso thatthecombinedvolumeof al! spacesmeetsthecriteriaforanunconfinedspace.Thetotalinputofall gasutilizationequipmentinstalledinthecombinedspaceshallbecon- sideredin makingthisdetermination.Eachopeningshallhavea mini- mumfreeareaofonesquareinchper1,000Btuperhourofthetotalinput

ratingofal!gasutilizationequipmentintheconfinedspace,butnotless that100squareinches.Oneopeningshallbewithin12inchesofthetop

andonewithin12inchesofthebottomoftheenclosure.Theminimum dimensionofairopeningsshallnotbetessthan3 inches.

B.AllAirfromOutdoors:Theconfinedspaceshallcommunicatewiththe

outdoorsinaccordancewithmethods1or2.Theminimumdimensionof airopeningsshallnotbelessthan3 in.Whereductsareused,theyshall

beofthesamecross-sectionalareaasthefreeareaoftheopeningsto

whichtheyconnect.

1.Twopermanentopenings,onecommencingwithin12 inchesofthe top,andonecommencingwithin12inchesofthebottom,oftheenclo- sureshallbeprovided.Theopeningsshallcommunicatedirectly,orby theducts,withtheoutdoorsorspaces(crawlorattic)thatfreelycom-

municatewiththeoutdoors. a)Wheredirectlycommunicatingwiththeoutdoorsorwherecommu-

nicatingtotheoutdoorsthroughverticalducts,eachopeningshall haveaminimumfreeareaof1sq.in.per4000Btuperhouroftotal

inputratingof allequipmentintheenclosure.(SeeFigure3A.)

b)Wherecommunicatingwiththeoutdoorsthroughhorizontalducts,

eachopeningshallhaveaminimumfreeareaof 1sq.in. per2000 Btuperhouroftotalinputratingofallequipmentintheenclosure.

(SeeFigure3B.)

2.Onepermanentopeningcommencingwith12inchesof thetopofthe

enclosure,shallbepermittedwheretheequipmenthasclearanceofat

least1inchfromthesidesandbackand6inchesfromthefrontofthe

appliance.Theopeningshalldirectlycommunicatewiththeoutdoors

orshaltcommunicatethroughaverticalorhorizontalducttotheout- doorsorspaces(crawlorattic)thatfreelycommunicatewiththeout-

doors,andshallhaveaminimumfreeareaof: a)1sq.inchper3000Btuperhourofthetotalinputofallequipment

locatedintheenclosure(SeeFigure4),and

b)Notlessthanthesumoftheareasofallventconnectorsinthecon-

finedspace.

Figure 3A - FRESH AIR DUCT CAPACITIES (Btuh) I

FreshAir Duct Size

3"x 12" 8"x 8" 8"x 12"

= 1 tt

18Y2 x 16"

1 Square Inch per 4,000 Btuh

100% Free 75% Free

Area Area

1/4"Wire Metal Mesh Louvers

144,000 108,000

256,000 192,000 384,000 288,000

5t2,000 384,000

25% Free

Area

Wood Louvers

36,000 64,000

96,000

128,000

Figure 3B- FRESH AIR DUCT

1SquareInchper2,000Btuh

Fresh Air Duct Size

3" x 12"

8" x 8" 8" x 12" 81/2"x 16"

100% Free

Area

1/4"Wire Mesh

72,000

128,000

192,000

256,000

CAPACITIES (Btuh) I

75% Free Area

Metal Louvers

54,000

96,000 144,000 192,000

25%Free Area

Wood

Louvers

18,000 32,000 48,O0O

64,000

Figure 4 - FRESH AIR DUCT CAPACITIES (Btuh)

1Squaretnch per3,000 Btuh

100%Free 75% Free 25% Free

Area Area Area

FreshAir 1/4"Wire Metal Wood Duct Size Mesh Louvers Louvers

3"x !2" 108,000 81,000 27,000 8"x8" 192,000 144,000 48,000 8"x 12" 288,000 216,000 72,000 8½"x 16" 384,000 288,000 96,000

7,_8 4

The near boiler piping, that is the piping around the boiler,

must be considered as part of the boiler for proper water level control, and to produce dry steam. Correct near boiler piping is crucial to the proper operation of the boiler and

the heating system. Followthese recommendations carefully.

1. Place boiler in selected location, as near chimney as possible.

2. Install the pop safety valve, using the furnished 3/4" coupling, intothe 3/4" pipe nipple on the top of the boiler. Make a discharge pipe, using 3/4' pipe (not furnished} to carry the water or steam to a nearby drain. Do not connect the discharge pipe directly to a drain but leave an air gap. The downstream end of the discharge pipe must be unthreaded. No shutoff of any description shall

be placed between the pop safety valve and the boiler,

or on discharge pipes between such safety valves and the atmosphere. Installation of the pop safety valve shall

conform to the requirements ofthe ANSltASME Boiler and Pressure Vessel Code, Section IV The manufacturer is not

responsible for any water damage. This boiler is equipped with two 21/2"supply connections

and two 21/2"return connections, one each on both the left and right sides ofthe boiler. Unused connections must

be plugged with the 21/2_ plugs (furnished}. Recommended near boiler piping for gravity return

systems is shown in Figure 5. This configuration uses one supply and one return tapping. This setup can be used on any size boiler in this series. The supply and return

connections may be piped both into the same side (either

left or right} or one into each side ofthe boiler.

POPSAFETYVALVE

FLUE

PIPEFULLSIZESAME

AS BOILERTAPPING

(2ii2")_ MIN'

2 1/2" TEEWiTH PLUGFOR

• 24"

FEED

STEAMMAINS

REDUCINGELL POINTING DOWN

6" TO 10"

MAINVENT

1 1/2" MtN. PIPESiZE

NIPPLE

15' MIN,

28' MIN.- DIMENSIONA

-- HARTFORD LOOP

WET RETURN

GATEVALVE(NOTFURNISHED)

_"'--DRAiN VALVE(FURNISHED)

FORFLUSHINGSYSTEM

I t/2" FULLPORTBALLVALVE

FORBOTTOMSLOWDOWN ANDDRAININGBOILER & SYSTEM(NOT FURNISHED}

DRYRETURN MAIN

Z4OCBF

5. For installerschoosing to use both supply tappings, Figure 6A shows the correct way to pipe this system. Figure 6B showsthe wrong way to pipe a header with two risers.

• Headers mustbefittedwithheaderoffsetsorswing joints,

or be equipped with expansion joints, so that thermal expansion and contraction of the header wilt notdamage

the boiler. Headers shall not be welded.

• System takeoffs from the header must be between the

equalizer and the riser to the header nearest the equalizer. System takeoffs must never be between two

risers.

6. System takeoffs from the header must never be bul- lheaded. If the steam main goes in two directions, there

must betwo takeoffsfrom the header, one for each main.

All boilers in gravity return systems must be equipped with a Hartford Loop as shown in Figures 5 and 6A.

When piping the vertical risers from the boiler to the

header, the bottom of the header must be a minimum of 24 inches above the water level line on the right side

ofthe boiler.

9. Steam riser(s) and header shall be 21/2"pipe size.

!0. Equalizerline shall be minimum 11/2"pipe size.

11. The near boiler piping shall include a 21/2"tee with a plug located on the supply line as shown for skimming

(i.e.surface blowdown).

PiPEFULL SIZESAME

AS BOILERTAPPING

POPSAFE_ VALVE

CONNECTRISERTO BOILERWITH

2 I/2" ELBOWANDNIPPLE (NOTSHOWN)

FLUE

COLLAR

MIN,

....{"2112" W TN

PLUGFORS

24"

W_AT_RFEED

STEAMMAINS

REDUCINGELL POINTING DOWN

6" TO t0"

I1/2" MIN. PiPEStZE

15" MIN,

28" MIN - DIMENSION A

I i

NIPPLE

HARTFORDLOOP

RETURN

-GATEVALVE(NOTFURNISHED)

_-- DRAINVALVE(FURNISHED)

FORFLUSHINGSYSTEM

I ;/2" FULLPORTBALLVALVE

FORBOTTOMBLOWDOWN ANDDRAINING BOILER

& SYSTEM(NOT FURNISHED)

MAINVENT

ORYRETURN MAiN

_4106A 6

WRONG WAY

DONOTBULLHEAD,USE TWOTAKEOFFS

THIS PIPING CONFIGURATION

tS INCORRECTTO SHOW

COMMONMISTAKES

WAY

TAKEOFFSMUSTBEBETWEENRISER&EQUALIZER

WRONG WAY

SWINGJOINTSAREMISSING

WRONG WAY

MiSSiNGTEE FORSKIMMING

12. The near boiler piping shall include a 11h"ball valve in the return piping as shown for bottom blowdown and

draining.

13. Forgravity returnsystems,the bottom ofthe lowest steam carrying pipe, be it a dry return, or the end of the steam

main, must be at least 28" above the normal water level

line on the right side of the boiler. This is known as "Dimension A."

14. For pumped returnsystems,follow the condensate pump or boiler feed pump manufacturer's instructionsfor proper installation and hookup.

15. In connecting the cold water supply to the water inlet valve, make sure that a clean water supply is available. When the water supply is from a welt or pump, a sand strainer should be installed at the pump.

FOR USE WITH COOLING UNITS

A. This boiler, when used in connection with chilled water

, systems,mustbe installed sothat thechilled water ispiped

in parallel with the heating boiler. Appropriate valves must be used to prevent the chilled water from entering the heating boiler (Fig.7).

B When this boiler is connected to heating coils located

in air handling units where they may be exposed to

refrigerated air circulation, the piping system shall be equipped with flowcontrol valvesor otherautomaticmeans to prevent gravity circulation of the boiler water during the cooling cycle.

VALVES A & B

OPEN FOR HEATING; CLOSE FOR COOLING

VALVES C & O CLOSE FOR HEATING:

OPEN FOR COOLING

WATER

CHILLER

TO SYSTEM t

74_o7

For boilers for connection to gas vents or chimneys, vent installations shall be I

in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code,

ANSI Z223.1-1atest revision and applicable provisions of the local building codes.

CHECK YOUR CHIMNEY

This is a very important part of your heating system. It must

be clean, the right size, properly constructed and in GOOD CONDITION.Noboilercan function properly with a bad chim- ney.Inspect the chimney and verify that the construction and size of the chimney meets all applicable provisions of the National Fuel Gas Code and local building codes. Fig. 8 gives you an idea how a boiler might be vented to a chimney.

Note that the height (HT} is measured from the vent pipe

to the top.

CHIMNEY SIZING

Chimney sizing and all other aspects of the vent installation

must be in accordance with Part 7 of the National Fuel Gas

Code, ANSI Z223.1-latest revision, and applicable provisions

ofthe local building codes.

CONNECTING THE VENT DAMPER AND VENT CONNECTOR

Refer to Fig. 1 flue diagram for the size and location of the vent (flue opening). Use a 28 gauge (minimum) galvanized pipe to connect to the chimney.

IMPORTANT - The damper blade on the furnished vent damper has a 1/2square inch hole (approximately 3/4"diame-

ter). On boilers equipped with standing pilot, the hole must

be left open. On boilers equipped with intermittent ignition,

the hole should be plugged by using the plug supplied with

the ventdamper.

1. Positionfurnished vent damper on top offlue outletcollar. Fasten damper securely to flue outlet collar with sheet

metal screws, Make sure damper blade has clearance to operate inside ofdiverter.

As An Option

The damper maybe installed in any horizontal or vertical position, closer to the flue outlet collar preferred. Follow the diagrams - Figures 9, 10 and 11.

2. Install the vent damper to service only the single boiler for which it is intended. The damper position indicator shall be in avisible location following installation. Locate the damper so thatit is accessible for servicing.

3. Thedamper mustbeintheopen position whenappliance main burners are operating.

4. The boiler is equipped with a factory wired harness that

plugs into the vent damper. The thermostat must be connected to the black wires marked 24 volt thermostat

on the boiler.

5. Vent pipe must be same size as the flue outlet collar.

6. Slope pipe up from boiler to chimney not less than 1/4' per foot.

7. Run pipe as directly as possible with as few elbows as possible.

8. Do not connect tofireplace flue.

9. Endofvent pipe must be flush with insideface ofchimney flue. Usea sealed-in thimblefor the chimney connection.

10. Horizontal run should not be longer than 3/4the chimney height (HT}(Fig.8}.

The sectionsofventpipeshould be fastenedwith sheet metal

screws to make the piping rigid. Horizontal portions of the

vent system must be supported to prevent sagging. Use

stovepipe wires every 5' to support the pipe from above. If the vent pipe must go through a crawl space, double wall vent pipe should be used. Where vent pipe passes through a combustible wall or partition, use a ventilatedmetal thimble. The thimble should be 4 inches larger in diameter than the vent pipe.

MINIMUM VENT PIPE CLEARANCE

Wood and other combustible materials must not be closer than 6" from anysurfaceof single wall metal vent pipe. Listed

Type B vent pipe or other listed venting systems shall be

installed in accordance with their listing.

REMOVING EXISTING BOILER FROM COMMON VENTING SYSTEM

When an existing boiler is removed from a common venting system, the common venting system is likely to be too large

for proper venting of the appliances remaining connected to it.

At the time of removal of an existing boiler, the following

steps shall be followed with each appliance remaining connectedto the commonventingsystemplaced inoperation, while the other appliances remaining connected to the common venting systemare not in operation.

1. Sealany unused openings in the common venting system.

2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction,leakage,corrosionand otherdeficiencies which

could cause an unsafecondition.

3. Insofaras is practical,close all building doors and windows and atl doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turnon clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

7_ 8

4. Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance

will operate continuously.

5. Test for spillage at the draft hood relief opening after 5 minutesofmain burner operation. Usetheflameofamatch

or candle, or smoke from a cigarette, cigar or pipe.

6. After it has been determined that each appliance remain- ing connected to the common venting system properly

vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other

gas-burning appliance to their previous conditions of use.

7. Any improper operation of the common venting system should be corrected so the installation conforms with the

National FuelGasCode,ANSIZ223.1-latestrevision. When resizing any portion of the common venting system, the

common venting system should be resized to approach the minimum size as determined using the appropriate

tables in Part 1! in the National Fuel Gas Code, ANSI Z223.1 -latestrevision.

For boilers for connection to gas vents or chimneys, vent installations shall be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1-1atest revision and applicable provisions of the local building codes.

Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mech- anical draft systems operating under positive pressure.

ROOF RIDGE

3t4 HT MAXIMUM

MUST SLOPE UP

AT LEAST 1/4 INCH PER FOOT OF HORIZONTAL RUN

HORIZONTAL INSTALLATION

YES YES

TO FURNACE VENT TO CHIMNEY

OR BOILER DAMPER INSTALL VENT DAMPER WITH

ACTUATOR TO SIDES OF

VENT ONLY, DO NOT MOUNT

ABOVE OR BELOW VENT,

VERTICAL INSTALLATION

TO CHIMNEY

€ _ VENT

FLOW uDAMPE R

TO FURNACE N

OR BOILER U

ACTUATOR MAY BE

INSTALLED IN ANY POSITION

CAUTION: DO NOT INSTALL

THE VENT DAMPER

WITHIN 6 In. (152 ram) OF

COMBUSTIBLE MATERIAL.

INSTALL DAMPER

NOT

HERE

_'HtMNEY

BOILER WATER HEATER

TYPICAL INSTALLATION FOR VENT DAMPER

NOTE CAUTION AND FOOTNOTES

1. Install the vent damper to service only the singleappliance for which it is intended.Ifimproperly installed,a hazardous condition,

such as an explosion or carbon monoxidepoisoning,could result.

2. Do not installthevent damper on vent pipecurve.

3. Do not run wires near high temperature surfaces. Use stand-off brackets ifnecessary.

7_c090

+ 19 hidden pages

Dunkirk PVSB, PSB, PSB-3D, PSB-4D, PSB-5D Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual