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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)