Hubbell Water Heaters -Model ST Packaged Steam Fired Water Heater

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The Model ST is a fully packaged steam fired water heater designed to be a reliable and long lasting source for hot water. Each component is carefully selected to ensure performance in even the most demanding application.

Category: industrial water heaters | process heaters | process water heaters...

MasterFormat: Plumbing Equipment | Domestic Water Heat Exchangers



Hubbell Water Heaters
45 Seymour Street
P.O. Box 288
Stratford, CT 06615
Tel: (203) 378-2659
Fax: (203) 378-3593

info@hubbellheaters.com

http://www.hubbellheaters.com/

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Overview


Model ST Packaged Steam Fired Water Heater

The Model ST is a fully packaged steam fired water heater designed to be a reliable and long lasting source for hot water. Each component is carefully selected to ensure performance in even the most demanding application. Whether you are heating potable water in a commercial building or process water in an industrial application, you can select a Hubbell Model ST to do the job. When you specify and install a Hubbell ST model water heater you will have confidence in knowing that the owner will be provided with a quality product that is a long lasting and trouble-free source for hot water.


Reliable
  • Only high grade materials used in construction to ensure long operating life
  • Hydrastone cement lining provides superior protection and tank longevity
  • Heavy duty construction withstands demanding commercial/industrial use
Packaged System
  • Factory supplied with all steam controls saving time and money during installation
  • All steam operating controls are factory sized and selected to ensure reliable operation
Versatile
  • Full range of styles, sizes, and optional features to meet your exact heating needs

Steam Component General Configuration

The steam control valve maintains accurate water temperature in a steam fired water heater by regulating the flow of steam through the heating coil.

  • Self Operating
    The valve design includes a bulb and capillary assembly charged with a thermally responsive vapor. The expansion/contraction of the vapor acts upon the valve bellows in order to control the flow of steam throught the valve. No external power source is required for operation.
  • Pneumatically Operated
    In this configuration the building air supply feeds a factory installed temperature controller which operates the steam control valve. The temperature controller sends a precise air signal to the steam control valve which adjusts the flow of steam into the heating coil. The temperature controller is fully adjustable from 50-250°F and requires 20 psi air at a maximum consumption of 0.5 SCFM.
  • Pilot Operated
    A pilot operated control valve is the most widely used type of valve for standard water heating applications. In this type of valve, a temperature pilot device utilizes steam to operate the main valve. No external power source is required other than steam. This is a highly dependable temperature control system which is suitable for most commercial and industrial applications. As an option, this valve may include a pressure reducing pilot which limits the steam pressure to a predetermined maximum.
  • Electronic Operated
    This control valve is similar to a pneumatically operated system, except in this case the temperature controller is a PID digital display electronic temperature controller which outputs a 4-20mA signal to a compact motor mounted on the steam control valve in order to proportionally control the flow of steam to the heating coil. The temperature controller displays set point as well as actual water temperature and is available with an RS486 communications port for remote control.


Model ST Storage Type Standard Equipment
Vessel Construction
  • All welded carbon steel vessel designed and built in strict accordance with the ASME Code Section VIII and stamped, certified and registered with the National Board of Boiler and Pressure Vessel Inspectors
  • All internal tank surfaces are lined with a minimum of 5/8" thick Hydrastone cement for superior protection and tank longevity
  • Designed for 125 psi working pressure and hydrostatically tested
Steam Operating Controls
  • Steam operating controls are factory selected, sized, piped and tested to ensure reliable operation
  • All steam components are factory plumbed with schedule 40 black iron pipe and ready for steam and condensate connections
  • High quality cast iron pilot operated steam control valve modulates the flow of steam through the heating coil to provide accurate water temperature control
  • Cast iron Y strainer with 20 mesh screen protects the steam controls and coil from dirt and debris in the steam supply
  • Thermostatic drip trap removes condensate from the steam supply line
  • Heavy duty cast iron float and thermostatic main condensate trap for optimum efficiency
  • Brass vacuum breaker and dial steam pressure gauge
Steam Heating Coil
  • A high quality factory installed 2 pass U-Tube heating coil constructed from 18 gauge 3/4" O.D. single wall copper tubing designed for a maximum working pressure of 150 psi
  • All wetted parts are non-ferrous for maximum longevity
  • Heavy duty fabricated steel head with threaded NPT steam and condensate connections
  • Copper lined tube sheet
  • Reference Heating Coils for detailed heating coil construction features
General
  • Heavy duty 3" thick fiberglass insulation covers 100% of the pressure vessel for maximum operating efficiency and minimal stand-by heat loss
  • Heavy gauge painted galvanized steel protective outer jacket
  • Heavy duty integrally welded steel supports for floor mounting
  • Full five (5) year Non Pro-Rated tank warranty and a one (1) year steam component warranty
  • ASME rated combination T&P relief valve set at the tank working pressure and 210°F

Model ST Optional Equipment
Vessel
  • Alternate protective lining:
    Phenolic epoxy resin, Flame spray copper, Hot dip galvanizing, other
  • Alternate vessel construction:
    Stainless Steel Type 304 or 316L, 90/10 Copper-Nickel, other
  • Alternate working pressure: Specify
Steam Heating Coil
  • Double wall tubing with a leak detection port
  • Alternate tubing material:
    Stainless Steel, 90/10 Copper-Nickel, Admiralty, Other
  • Fabricated steam head constructed from:
    Stailess Steel, Copper Alloy, Other
General
  • Skid mounting on heavy duty all welded I Beam
  • Type 304 stainless steel protective jacket
  • Manway 12" x 16" or Inspection Opening 3" NPT
Operating Controls
  • Steam controls can be factory sealed and sized, but shipped loose for in the field installation by others.
  • Various steam control vavles are available to meet the specific needs of your application: Self-operated type, pneumatic operated, electronic operated, separate pressure reducing pilot type
  • Single solenoid safety system closes the steam supply to the control valve should the water temperature in the tank reach the hi-limit set point. Requires 120 volt 5 amp electrical service
  • A double solenoid safety system dumps over heated water in the storage tank to drain addition to closing the steam supply to the control valve. Requires 120 volt 5 amp electrical service
  • Intra-tank circulation pump pacakage continuously circulates water within the tank in order to reduce stratification. All bronze fractional HP pump
  • Anticipator control system forces incoming cold water over the control valve sensing bulb in order to begin heating water immediately
  • Dial water thermometer and pressure gauge factory installed in the tank
  • Factory wrapped and baffled steam coil with integral pump package

Please note: optional equipment may impact overall dimensions and weight. Please request submittal drawing from factory.


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Specifications

Model ST (Vertical)
Model STH (Horizontal)
Overall Dimensions, Models ST and STH
Actual Storage Capacity (Gallons) Overall Dimensions (Inches) Overall Dimensions (Inches) Overall Dimensions (Inches) Overall Dimensions (Inches) Overall Dimensions (Inches) Storage Tank Nominal Storage Capacity (Gallons) Inlet Outlet Sizing (NPT) Approx. Shipping Weight (Lbs.)
Actual Storage Capacity (Gallons) Vertical Vertical Horizontal Horizontal Horizontal Storage Tank Nominal Storage Capacity (Gallons) Inlet Outlet Sizing (NPT) Approx. Shipping Weight (Lbs.)
Actual Storage Capacity (Gallons) Diameter "A" Height "B" Length "C" Width "D" Height "E" Diameter x Length Nominal Storage Capacity (Gallons) Inlet Outlet Sizing (NPT) Approx. Shipping Weight (Lbs.)
80*266560263222 x 54901.5700
120*287568283424 x 641401.5900
150*307972303626 x 681701.51100
175367367364430 x 631951.51500
200368276364430 x 722201.51700
225368983364430 x 792451.51750
250427468425036 x 64 2851.51850
275428074425036 x 703101.52000
300428882425036 x 783451.52180
325429286425036 x 823601.52300
350429488425036 x 843701.52500
375488175485642 x 714251.52600
400488579485642 x 754501.52700
425488882485642 x 784701.52900
450489387485642 x 835001.53000
475547973546248 x 6954023100
500548276546248 x 7256523225
525548579546248 x 7559023350
550548983546248 x 7962023400
575549387546248 x 8365023500
600549589546248 x 8566523650
70054107101546248 x 9775524000
80054119113546248 x 10985024300
90054132126546248 x 12294024800
100054145139546248 x 135106025200
125060149143606854 x 139138025600
150060174168606854 x 164162526000
175066168162667460 x 158193537400
200066185179667460 x 175214538100
250078169163788672 x 159280038200
300078197191788672 x 187330038300
350090174168909884 x 16439356 FLG.8900
400090195189909884 x 18544406 FLG.9800
4500N/AN/A16810210896 x 16050156 FLG.10700
5000N/AN/A18310210896 x 17554856 FLG.11600
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
Note:
All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions. The tank selections above are shown for convenience. A full selection of storage capacities is available.
* 80, 120, and 150 gallon tanks do not come equipped with a manway.
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