A.O. Smith GWT-300 User manual

AOSDG61020
Revised August 2008 PG 1 OF 4
Commercial Gas Boilers
HOT WATER SUPPLY SYSTEM USING GENESIS®BOILERS
With Ac-U-Temp, A. O. Smith makes it easy as possible to install a complete packaged hot water
supply system, combining 84% efficient Genesis®boilers with storage tanks up to 1,000 gallons.
Each Ac-U-Temp system is custom-made to your specifications for each application and shipped
fully assembled, pre-piped and pre-wired. All the installer has to do is make the flue, gas,
electrical and water connections, so installations are easy.
Consult your A. O. Smith representative for more information on the wide range of available
boiler/storage tank combinations using the Ac-U-Temp system.
GENESIS® BOILERS–UP TO 84% THERMAL EFFICIENCY
• Thehighestpossibleefciencyforanon-condensingboiler
• Availableinputsrangefrom300,000to2,500,000BTU
• Flexibleconventional-ventorsealed-combustiondirect-ventoptions
• ForcompleteinformationonGenesis®Hot Water Supply Boilers,
consult Specification Sheet
GLASS-LINED STORAGE TANKS
• Standardcapacitiesupto1,000gallons
• Customtanksavailableupto10,000gallons
• Standardtanksarefactoryjacketedandinsulated–bareuninsulated
tanks also available
• Optionalcementorepoxy-linedtanksavailable
• Forcompleteinformationonstandardtanks,consulttankspec
sheet or see your local rep
MULTIPLE BOILER SYSTEMS
• Ac-U-Tempsystemscanbedesignedwithmultipleboilersto
provide50%–100%back-up
• Boilerscanbeon&offred,orsequencedtomeetchangingsystemdemands
• Sequencedmulti-boilersystemswithsmallstoragetanksareidealforapplicationswith
relatively constant hot water demands
• Optionalsequencedcontrolpanelavailable
MULTIPLE TANK SYSTEMS
• Ac-U-Tempsystemscanbedesignedwithmultipletanksforapplicationswithlowceiling
heightsorotheruniqueinstallationchallenges
DUAL ENERGY SOURCE OPTION
• Storagetankscanbespeciedwithheatexchangerstoallowwinter/summerheatingboiler
operation
• Water-to-waterorsteam-to-waterheatexchangersavailableinbothsingle-wallordouble-
wall design
• Completecontrolpackagescanbefactory-installedfor“hookupandrun”simplicity
OPTIONAL
MODELS
GWT-300
through
GWT-2500
CRN

Commercial Gas Boilers
ELECTRIC BACK-UP OPTION
• Storagetankscanbespeciedwithheavy-dutyelectricheatingelementsandcontrolsforupto3,000Kilowatt(kW)input
• 100%electricback-upensureshotwatersupplyevenduringgasoutages
OTHER FEATURES:
ASMETEMPERATUREANDPRESSURERELIEFVALVE#125
TANKTEMPERATURESENSORANDTHERMOMETER
ISOLATIONVALVES(BALLVALVES)
125PSITANKWORKINGPRESSURE
CAST-IRON BRONZE-FITTED CIRCULATING PUMP
LARGESYSTEMSSHIPPEDWITHSPLIT/BOLTTOGETHERSKIDSFOREASEOFSHIPPINGANDINSTALLATION
OTHER OPTIONS:
ALL-BRONZE CIRCULATING PUMP
150AND160PSITANKWORKINGPRESSURES
11”x15”MANHOLES
HORIZONTAL STORAGE VESSEL DATA
MODEL
NUMBER
INCHES OR
CM
DIMENSIONS
LENGTH
(A1)
OUTLET DIM
(A2)
WIDTH
(B1)
HEIGHT
(B2)
INLET
HEIGHT
(B3)
INLET SIZE OUTLET SIZE
AJH-200 Inches 77 18 36 16 21 2-1/2 2-1/2
cm 195.6 45.7 91.4 40.6 53.3 6.4 6.0
AJH-350 Inches 93 19-1/2 42 15-1/2 247 2-1/2 2-1/2
cm 236.2 49.5 106.7 39.4 627.4 6.4 6.4
AJH-400 Inches 99 19-1/2 42 15-1/2 24 2-1/2 2-1/2
cm 251.5 49.5 106.7 39.4 61 6.4 6.4
AJHT-500 Inches 94 21 48 16 27 3 3
cm 238.8 53.3 121.9 40.6 68.6 7.6 7.6
AJH-500 Inches 79 56-1/2 54 59 30 3 3
cm 200.7 143.5 137.2 149.9 76.2 7.6 7.6
AJH-750 Inches 111 22-1/2 54 16-1/2 30 3 3
cm 281.9 57.2 137.2 41.9 76.2 7.6 7.6
AJH-1000 Inches 143 22-1/2 54 163-1/2 30 3 3
cm 363.2 57.2 137.2 415.3 76.2 7.6 7.6
www.hotwater.com AOSDG61020
Revised August 2008 PG 2 OF 4

www.hotwater.com AOSDG61020
Revised August 2008 PG3OF4
Commercial Gas Boilers
BOILER DATA
MODEL
NUMBER
INCHES OR
CM
DIMENSIONS
LENGTH
(C2)
WIDTH
(C1)
HEIGHT
(D)
GW-300 Inches 29-1/2 24 32
cm 74.9 61 81.3
GW-400 Inches 35-3/4 24 32
cm 90.8 61 81.3
GW-500 Inches 42 24 32
cm 106.7 61 81.3
GW-650 Inches 51-3/8 24 32
cm 130.5 61 81.3
GW-750 Inches 57-5/8 24 32
cm 146.4 61 81.3
GW-1000 Inches 47 31-3/4 42-1/2
cm 119.4 80.6 108
GW-1300 Inches 57-1/2 31-3/4 42-1/2
cm 146.1 80.6 108
GW-1500 Inches 64-1/2 31-3/4 42-1/2
cm 163.8 80.6 108
GW-1850 Inches 78-3/4 31-3/4 45-1/4
cm 200 80.6 114.9
GW-2100 Inches 85-1/2 31-3/4 45-1/4
cm 217.2 80.6 114.9
GW-2500 Inches 85-1/2 31-3/4 45-1/4
cm 217.2 80.6 114.9
VERTICAL STORAGE VESSEL DATA
MODEL NUMBER INCHES OR CM
DIMENSIONS
HEIGHT(A) WIDTH(B1) INLET HEIGHT
(B2) INLET SIZE OUTLET SIZE
AJV-120 Inches 67-1/4 28 15 2 2
cm 170.8 71.1 38.1 5.1 5.1
AJV-140 Inches 88 30 19 2-1/2 2-1/2
cm 223.5 76.2 49.5 6.4 6.4
AJV-200 Inches 84 36 21 2-1/2 2-1/2
cm 213.4 91.4 53.3 6.4 6.4
AJV-250 Inches 97 36 21 2-1/2 2-1/2
cm 246.4 91.4 53.3 6.4 6.4
AJV-350 Inches 99 42 25-1/2 2-1/2 2-1/2
cm 251.5 106.7 57.2 6.4 6.4
AJV-400 Inches 106 42 22-1/2 2-1/2 2-1/2
cm 269.2 106.7 57.2 6.4 6.4
AJVT-500 Inches 101 48 24 3 3
cm 256.5 121.9 61 7.6 7.6
AJV-500 Inches 86 54 25-1/2 3 3
cm 218.4 137.2 64.8 7.6 7.6
AJV-750 Inches 118 54 25-1/2 3 3
cm 299.7 137.2 64.8 7.6 7.6
AJV-1000 Inches 118 54 25-1/2 3 3
cm 299.7 137.2 64.8 7.6 7.6
Model to Specify:
GWT - 650 - AJH - 750 A - S
Indicates System
Configuration
A = ASME Code
Tank Capacity
     (GallonsStorage)
    TankType(AJV=Vertical,
    AJH=Horizontal)
Boiler BTU Size
T = System
Boiler Type

Commercial Gas Boilers
www.hotwater.com AOSDG61020
Revised August 2008 PG 4 OF 4
SUGGESTED SPECIFICATION
Hot Water Supply System - shall consist of A. O. Smith Ac-U-Temp®factory assembled unit Model No.______. System shall be completely factory
assembled and shall include the A. O. Smith Genesis hot water supply boiler(s), with input of ______ BTU/H for ______ gas and recovery capacity
of ______ gph, and the A. O. Smith glass-lined (cement/epoxy) hot water storage tank with ______ gallons capacity for ______ mounting (vertical-
horizontal). System shall include properly sized circulator, inlet and outlet thermometers, tank temperature thermometer, relief valve, and tank temperature
control. Entire system shall be rigidly mounted on welded steel skid base and shipped assembled to job site (Ac-U-Temp systems employing tanks too
large for shipping as an assembled unit, will be shipped with the tank mounted on a split bolt-together skid).
See Genesis Boiler Specications and Storage Tank Specications in your A & E book. Hot water supply boiler(s) and storage tank(s) shall have a 5 year
limited warranty against corrosion as outlined in the written warranty.
NOTE: Custom arrangement also available. Consult factory.
For Technical Information and Automated Fax Service, call 800-527-1953. A.O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
Configuration H
Configuration S
Configuration P
Configuration V