o Factory tested

o Easy service .

- One-piece access door

-All controls in easy reach

CJ ..Highefficiency

- Fluebaffles

- Stajnles$.steel burners£Wi

- Automatic ~ent dampermwI . .

o Cast iron sections with.built-inairseparatoT

Insulatedheayy-gaugesteel Jacket

q Limited lifetime'warranty

, 1w.l1WilliamsonI·

Gas-fired Water Boilerso Factory-packaged

o 52,000 to 245,000 Btuh InputNatural or propane gas

o Atrnospherlc (chimney) venting

RATINGS

0-2,000 feet altitude 2,000-1,500 feetaltitude (Can

InputInput u pu

(DOE Heating Capacity)

210,000

® CD SeeORDERCODESbelowfor modelsuffixexplanation.@ Basedonstandardtest proceduresprescribedbytheUnitedStatesDepartmentof Energy.® Contactyourdealerregardinginformationandpartsfor highaltitudeapplications.__________L- ~

Btuh@

174,000

202,000245,000

DOE

Btuh

Boiler Circulatorwater flange size

content (Recommendedsupply & return

Gallons pipe size, NPT)

1.5 80.2 80.4 83.0 4" 1.0. %"

1.5 80.1 80.7 82.2 4" 1.0.

2.1 80.4 81.4 82.9 5" 1.0. 1"

2.7 80.4 81.5 82.5 6"1.0. 1"

82.2

® NetI~B~Rratingsarebasedonnetinstalledradiationof sufficientquantityfor therequirementsof thebuildingandnothingneedbeaddedfor normalpipingandpickup.Ratingsarebasedonapipingandpickupallowanceof 1.15.Additionalallowanceshouldbemadefor unusualpipingandpickuploads.

GWAboilers are CSAdesign certified forinstallation on combustible flooring.(Do not install on carpetinq.)

r6' --ir 1314-->1

28%

® Supply piping (Note 1)@ Return piping (Note 1)@ Relief valve, %" NPT@ Vi' NPT to expansion tank/air vent@ Vent connection to vent damper

ORDER CODEGWA=GasWater Boiler,Atmospheric (Chimney)Vent

,----------Input in MBH

Fuel { N = Natural gasL = Propane

Pilot Configuration:245 S = Standing pilot210 = Intermittent pilot

175 (Propane=Standing

140 pilot onlY!

105 IT=Taco pump070 L S

GWA - 052 N - I T -w

NOTE 1

DIMENSIONSALL DIMENSIONS IN INCHES

2% ,"'®"t:

""#"

"

"

"1----------l--,;-1

H

19

-I D 1-

RIGHT SIDEFRONT

EQUIPMENT

@ Draft hood Note1: Boilersupplyandreturntappingsare1\<\" NPT.Circulator'7' Gas su pply pipi ng flangesshippedwithboileraresizedto recommendedpipe'!./ sizelistedinRATINGStable,above.® Drain valve Boiler circulator is shipped loose. Circulatormay be® Gas supply entrance (right or left side) mountedoneilherboilersupplyorreturnpiping.

@) Pressure/temperature gauge (in tee on supply)

• Factory testedInsulated heavy-gauge steel jacket

• Cast iron sections with built-in air separator• Vertical draft hood

Electrical junction box• 24-VAC combination gas valve• Combination relay receptacle and 40VA

transformer and plug-in circulator relayTaco 007 circulator

• Stainless steel burners

WARRANTY

• Limited lifetime warranty on heatexchanger

• 1-year limited warranty on parts• Optional 5- or 10-year parts and labor

warranty

• High temperature limit control• Automatic vent damper• 30 PSIG ASME relief valve• Combination pressure/temperature gauge

STANDING PILOT MODELS• Constant-burning pilot system, thermally-

supervised

INTERMITTENT PILOT MODELS• Spark-ignited (intermittent) pilot system

Electronic ignition/flame supervisory control

1"""1 Williamson8201 W. Calumet Road • Milwaukee, WI 53223

www.williamson-thermoflo.com Form W-001 (03/04)