Electric Low Capacity

Light Duty Commercial

Electric cement lined water heater Model E
  • Light Duty
  • 6 - 120 Gallon Capacity
  • Up to 12KW - 1 Phase or 3 Phase

Ceiling Hung Horizontal

Electric horizontal ceiling hung water heater Model HE/HSE
  • Horizontal, Ceiling Hung
  • 20 or 30 Gallon Capacity
  • Up to 20 KW - 1 or 3 Phase

Heat Pump
Hybrid

Hybrid electric heat pump water heater Model PBX
  • Heat Pump Water Heater
  • 40 - 120 Gallon Capacity
  • 1 or 3 Phase

Point-Of-Use Storage

Point-of-use electric water heater Model CE110
  • Point-of-Use
  • 1 Gallon Capacity
  • 1000 or 450 Watts - 1 Phase

Point-Of-Use Tankless

Electric tankless point-of-use water heater Model R
  • Whole House / Point-of-Use
  • Availabe 3 thru 27 KW - 1 Phase

Electric
Booster

Electric booster water heater Model J
  • Booster Heater
  • Provides 180°F water
  • Up to 88 KW - 1 or 3 Phase

Tankless Electric Booster

Electric tankless booster heater Model JTX
  • Tankless Booster Heater
  • Provides 180°F water
  • 11 to 54 KW - 1 or 3 Phase

Heavy Duty Commercial

Commercial heavy duty electric storage water heater Model SE
  • Heavy Duty
  • 6-120 Gallon Capacity
  • Up to 58 KW - 3 Phase

Tankless Commercial

Electric tankless water heater Model TX
  • Tankless Commercial
  • Highly efficient tankless
  • Up to 54 KW - 1 or 3 Phase

Large ASME
Heater

Large capacity electric storage tank water heater Model SH
  • Large Capacity
  • 80-5000 Gallon Capacity
  • All KW ratings - 1 or 3 Phase
     

Commercial Gas Tankless

Gas tankless water heater Model GX
  • High Efficiency Condensing Burner
  • Integrated Pump
  • 200,000 and 250,000 BTUs

Integrated Tank with Tankless

Condensing gas storage tank water heater Model GXT
  • High Efficiency Condensing Burner
  • Hydrastone Cement
  • 200,000 to 250,000 BTUs

DI / RO Gas
Tankless

DI/RO gas fired tankless water heater Model DGX
  • DI/RO Water Heater
  • High Efficiency Condensing Burner
  • 199,950 and 250,000 BTU

Gas Tankless Booster

Condensing gas tankless booster water heater Model JBX
  • Gas Tankless Booster
  • For Commercial Kitchens
  • 250,000 BTU

Gas Storage
Heater

Condensing gas storage tank water heater Model GXT
  • Non Condensing Burner
  • Hydrastone Cement
  • 200,000 to 250,000 BTUs
   

Large ASME
Steam Heater

Steam fired water heater large capacity Model ST
  • Storage Type
  • 80-5000 Gallon Capacity
  • ASME Stamped

Packaged Semi-Instantaneous

Semi-Instantaneous Steam Fired Water Heater Model STX
  • Semi-Instantaneous
  • Space saving design
  • Provides 10,500 GPH

Point-Of-Use
Steam

Storage tank steam fired water heater Model PS
  • Light Duty
  • 80-120 Gallon Capacity
  • For low demand/recovery

High Capacity Instantaneous

Instantaneous steam fired water heater Model F
  • Instantaneous
  • 7 Sq. Ft. of floorspace
  • Up to 120 GPM
     

Semi-Instantaneous Indirect

Indirect fired semi-instantaneous water heater Hubbell Model BWX
  • Semi-Instantaneous
  • Vertical or Horizontal
  • ASME Stamped

Large ASME
Indirect

Indirect fired storage tank water heater Hubbell Model BW
  • Storage Type
  • Vertical or Horizontal
  • 80-5000 Gallon Capacity

Small Capacity Indirect

Indirect fired storage tank water heater model T Transflow
  • Indirect Fired
  • 30-120 Gallon Capacity
  • Utilizes boiler water

Solar

Solar water heater Model SLN
  • Solar Heater
  • Vertical Storage Type
  • 30-120 Gallon Capacity
       

Storage
Tanks

ASME and None ASME storage vessels Hubbell Model StorageTank
  • ASME & Non ASME designs
  • Hydrastone Cement
  • Vertical or Horizontal
     
       

Circulation (Instantaneous)

Electric circulation heater Hubbell Model CR
  • Circulation (Instantaneous)
  • Heavy Duty Construction
  • 25-1600 KW - 1 or 3 Phase

Explosion
Resistant

Electric hazardous location water heater Model ER
  • Hazardous Location
  • 10-120 Gallon Capacity
  • Up to 58 KW - 1 or 3 Phase

Industrial Process Heater

Electric process industrial water heater Model V
  • Process Systems & Industrial
  • ASME Stamped
  • Up to 88 KW - 1 or 3 Phase

Emergency Shower Tankless

Electric tankless safety shower water heater Model ETX
  • Tankless Emergency Tepid Water
  • NEMA 4 Standard
  • Up to 88 KW - 1 or 3 Phase

RO / DI Heater Compact

DI/RO electric hot water heater Model HD
  • RO/DI Water Heater
  • Point-of-Use Heater
  • Up to 88 KW - 1 or 3 Phase

RO / DI Heater Storage

DI/RO electric hot water heater Model D
  • RO/DI Water Heater
  • 1-120 Gallon Capacity
  • Up to 88 KW - 1 or 3 Phase

Tepid Water for Emergency Fixtures

Electric safety shower water heater Model EMV
  • Emergency Tepid Water
  • Fully packaged system
  • Integrated mixing valve

Fully Integrated Package

Model Packaged Skid
  • Customized to your specifications
  • Full featured system ready for your application

Light Duty
Electric

Electric water heater for shipboard marine use single phase power Model ME
  • Light Duty
  • 6-120 Gallon Capacity
  • Up to 6 KW - 1 Phase

Large ASME
Electric

Electric water heater for shipboard marine use large capacity Model MSH
  • Large Capacity
  • 80-5000 Gallon Capacity
  • All KW ratings - 1 or 3 Phase

Heavy Duty
Electric

Electric water heater for shipboard marine use three phase power Model MSE
  • Vertical
  • 6-120 Gallon Capacity
  • 1 or 3 Phase - Up to 58 KW

Tankless
Electric

Electric tankless water heater for shipboard marine use model MTX
  • Tankless Marine Heater
  • Provides 180°F water
  • 11 to 54 KW - 1 or 3 Phase

Naval

Naval shipboard marine electric water heater Hubbell Model 177
  • MIL Spec Navy Heaters
  • Comforms to MIL-H-965
  • Shock and EMI protection

Fully Integrated Package

Turn-key hot water system
  • Customized to your specifications
  • Full featured system ready for your application
   

Immersion Heating
Elements

Electric immersion tubular style heaters
  • Immersion Electric Heaters
  • Flanged or Screw Plugs Types
  • All KW ratings - 1 or 3 Phase

Heat Transfer
Coils

Heat exchanger and heating coil water heaters
  • Immersion Heat Transfer Coils
  • U tube type
  • Range of Materials
   
       
Electric High Capacity
Gas Fired
Steam Fired
Indirect
Storage
Special Purpose
Marine
Elements & Exchangers
Resource Center
Indirect fired semi-instantaneous water heater Hubbell Model BWX
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Model BWX

Semi-Instantaneous Indirect Fired Water Heater

Uses Boiler Water Or HTHW To Heat Domestic Water

The Model BWX is a fully packaged indirect fired water heater which utilizes boiler water or high temperature hot water (HTHW) as the energy source for heating potable water. The entire package is designed to be a reliable and long lasting source for hot water. Each component is carefully selected to ensure high 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 BWX model to do the job. When you specify and install a Hubbell water heater, you will be provided with a quality product that is a long lasting and trouble-free source for hot water.

Learn More About Hydrastone Cement Lining

ASME
  • 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 selected and sized boiler water control valve simplifies installation and ensures reliable operation
  • Versatile

    • Full range of styles, sizes, and optional features to meet your exact heating needs
    • Compact design requires minimal floor space

Model BWX Semi Instantaneous Standard Equipment

Vessel Construction

  • Solid 90/10 Copper-Nickel 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
  • Designed for 150 psi working pressure and hydrostatically tested

Boiler Water Operating Controls

  • Operating controls are factory selected, sized, piped, and tested to ensure reliable operation
  • All components are factory piped and ready for boiler water in and out connections
  • Modulating control valve (2-way, 3-way) to regulate the flow of heating water through the coil. Modulating control valve to be (electric, pneumatic) powered
  • All bronze integral circulating pump
  • Direct mounted boiler water and domestic water temperature and pressure gauges
  • High limit single solenoid safety system closes the boiler water supply to the heating coil should the water temperature in the tank reach the hi-limit set point. Requires 120 volt 5 amp electrical service

Heating Coil

  • Factory sized and installed copper heating coil with a generously sized heating surface designed to ensure reliable operation
  • U-Tube heating coil constructed from single wall copper tubing designed for a maximum working pressure of 150 psi
  • Heavy duty fabricated steel head with threaded NPT inlet and outlet connections
  • All wetted parts are non-ferrous for maximum longevity
  • Non-Ferrous tube sheet

General

  • Heavy duty fiberglass insulation 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 component warranty
  • ASME rated combination T&P relief valve set at the tank working pressure and 210°F

Outline Dimensions

Model BWX (Vertical)

Outline Dimensions

Model BWXH (Horizontal)

Outline Dimensions

Vertical Dimensions (Inches)

Model No. Based on 100°F Δ T Recovery Rate (40-140°F)
Base Model Recovery Rating (GPH) BTU/Hr Boiler Water Entering & Exiting Temperatures (°F) Vertical Model BWX Overall Dimensions (Inches) Weight (Lbs)
Single Wall Double Wall
A B C D E A B C D E
BWXCN-600 600 500,000 180-160°F 88 41 28 15 21 101 47 34 17 23 810
200-180°F 88 40 29 13 19 100 47 34 15 23 655
BWXCN-900 900 750,000 180-160°F 100 47 34 15 21 90 42 27 19 25 850
200-180°F 76 35 22 15 21 89 41 28 17 23 770
BWXCN-1200 1200 1,000,000 180-160°F 100 47 34 15 21 102 48 33 19 25 850
200-180°F 88 41 28 15 21 89 41 28 17 23 810
BWXCN-1500 1500 1,250,000 180-160°F 89 41 28 17 23 102 48 33 19 25 1035
200-180°F 88 41 28 15 21 101 47 34 17 23 810
BWXCN-1800 1800 1,500,000 180-160°F 89 41 28 17 23 108 49 39 20 27 1035
200-180°F 77 35 22 17 23 101 47 34 17 23 985
BWXCN-2400 2400 2,000,000 180-160°F 101 47 34 17 23 108 49 39 20 27 1090
200-180°F 77 35 22 17 23 90 42 27 19 25 985
BWXCN-3000 3000 2,500,000 180-160°F 90 42 27 19 25 111 30 39 22 31 1195
200-180°F 78 36 21 19 25 102 48 33 19 25 1130
BWXCN-3600 3600 3,000,000 180-160°F 90 42 27 19 25 111 50 39 22 31 1195
200-180°F 78 36 21 19 25 96 43 33 20 27 1130
BWXCN-4200 4200 3,500,000 180-160°F 90 42 27 19 25 - - - - - -
200-180°F 78 36 21 19 25 108 49 39 20 27 1130
BWXCN-4800 4800 4,000,000 180-160°F 96 43 33 20 27 - - - - - -
200-180°F 84 37 27 20 27 99 44 33 22 31 1480
BWXCN-6000 6000 5,000,000 180-160°F 99 44 33 22 31 - - - - - -
200-180°F 99 44 33 22 31 - - - - - -
Note: All dimensions are approximate and subject to change. Please reference the submittal drawing for actual dimensions.

Formulas

Formulas and Chart

Piping Layouts

Model BWX Piping Layouts

Model BWX Piping Layouts

Model BWX Piping Layouts

Optional Equipment

Vessel

  • Alternate vessel construction: Stainless Steel Type 304 or 316L, galvanized steel
  • Alternative working pressure: Specify
  • Horizontal Construction

Heating Coil

  • Double wall tubing with a leak detection port
  • Alternate tubing material: (Stainless Steel, 90/10 Copper-Nickel, Admiralty)
  • Fabricated head constructed from: (Stainless Steel, Copper Alloy)

General

  • Type 304 stainless steel protective outer jacket

Operating Controls

  • Boiler water control valve can be factory selected and sized, but shipped loose for in the field installation by others
  • A double solenoid safety system dumps over heated water in the pressure vessel to drain in addition to closing the boiler water supply to the heating coil. Requires 120 volt 5 amp electrical service.

Model Number Designation BWX and BWXH



Step 1
Model:
BWX = Vertical
BWXH = Horizontal
Step 2
Vessel Type:
CN = 90/10 Copper-Nickel
SS = Stainless Steel
(Type 304 or 316L)
M = Galvanized Steel
-
Step 3
Recovery Rating:
In GPH at 100°F ΔT

Step 4
Coil Type:
S = Single Wall
D = Double Wall

Example:

BWXCN-3600S

A vertically installed semi-instantaneous indirect fired water heater with a 90/10 Copper-Nickel pressure vessel and single wall heating coil rated to heat 3600 GPH at a 100°F temperature rise.

Model BWX Specific Questions

Which is better for me, a tankless or storage type water heater?

It depends. A tankless water heater is sometimes referred to as a Point-of-Use (POU) or instantaneous water heater. Due to the relative small physical size of a tankless water heater compared to a storage tank water heater, a tankless option can be advantageous from a space saving perspective and can sometimes be installed closer to where you want hot water (hence the term POU). However, tankless heaters are not suited for many applications, so it is critical that before choosing to go tankless you have carefully considered all of the factors that sometimes make the tankless option more complicated and risky compared to a storage type water heater. In particular, you should understand the operational characteristics, maintenance requirements, reparability, and sometimes significant installation requirements of a tankless water heater before making a decision. Tankless units do not store heated water like a storage type water heater; they only heat water as there is demand and therefore must be sized to meet the maximum flow for the application. In some cases a tankless water heater may improve operating efficiency, but possibly at the expense of user comfort. Hubbell tankless water heaters are available in Electric Tankless or Gas Tankless

How does my water heater ship?

All Hubbell storage type water heaters ship via common carrier and are classified by the Commodity Classification Standards Board under National Motor Freight Classification (NMFC) class 100. Each water heater is palletized and wood crated. All Hubbell tankless water heaters, when transported using common carrier, ship class 77.5. To provide the lowest transportation cost, in most cases the shipment is made on Hubbell’s account and the freight cost is added to the invoice, commonly referred to as “Pre pay and add”. For very large shipments, the most economical method (LTL or Dedicated Truck) for transporting the water heaters to the final destination will be analyzed by Hubbell's transportation department.

What hi-limit control is provided for an over-temperature condition?

Hubbell provides a solenoid safety system for over-temperature situations. An aquastat senses the over-temperature condition and trips a solenoid which shunts the steam supply to the water heater. For semi-instantaneous water heaters (STX and BWX models) Hubbell provides an additional solenoid (aptly named a double solenoid) system to shunt the steam from entering the heating coil and to dump over heated water in the vessel to drain. For storage water heaters (ST and BW models) Hubbell provides a single solenoid system to shunt the steam supply to the heating coil thus preventing further over heating. A storage tank water heater does not typically include a second soeloid to dump the over heated water to drain due to the large volume of water that would need to be drained which could potentially exceed the capacity of the local drain.

What temperature should I set my water heater?

For typical domestic potable hot water service the temperature of your water heater at 125°F is sufficient. This prevents wasted energy (which means cost savings for you) and also decreases the possibility of scalding water burns. If you run out of hot water on this setting, increase the temperature by five degrees incrementally until your hot water needs are met. The goal is to have the temperature set just high enough to meet your needs but within safe operating parameters. Please note that a water heater in and of itself should not be relied upon as the ultimate temperature controlling source for the hot water delivered to your fixtures. Please consult local and state codes for installation of the proper and code approved (ASSE 1016, 1070, 1017) mixing devices to achieve the safe delivery of hot water to the fixtures. For a more complete information please download the whitepaper PDF titled "Understanding Potential Water Heater Scald Hazards" developed by ASSE at the following link ASSE Whitepaper

The heater will be installed in Canada, what is CRN?

All provinces of Canada have adopted the ASME Code and require vessels to be stamped with a provincial registration number in addition to the ASME symbol and National Board stamping. Before construction begins, one requirement has to be met in all provinces of Canada. We must submit blueprints and specification sheets in triplicate of all designs for approval and registration by the chief inspector of the province in which the vessel is to be used. After the chief inspector receives the drawings, they are checked by an engineer to determine their compliance with the Code and also with provincial regulations. A CRN number is assigned and must be stamped on the vessel in addition to the ASME symbol and National Board stamping. Once the design has been approved and registered, any number of vessels of that design can be built and used in the province where it was approved. This process is repeated for each province. The Canadian provinces also require their own manufacturer's affidavit form, with the registration number and the shop inspector's signature on the data sheets. Finally, when a vessel is delivered to a purchaser in Canada, an affidavit of manufacturer bearing registration number and the signature of the authorized shop inspector must be sent to the chief inspector of the province for which it is intended.

General Questions

Where can I purchase a Hubbell water heater?

There are numerous ways to purchase a Hubbell water heater depending upon the model you desire and your geographic location. The easiest way is to contact Hubbell directly at 800-647-3165 and ask for the sales department where you will be directed to either our local representative or our order entry department for quick and easy ordering.

Where can I purchase replacement parts?

Parts are available for your Hubbell water heater direct from the factory. Please call 800-647-3165 and ask for our parts department. Please have your model and serial number handy.

I don't see the size or feature I need, what do I do?

Hubbell has more than 35 product families available in over 4,000,000 configurations. There are numerous features, configurations and ratings we provide but for practical reasons are are not listed in the sales brochure. If you have a specific requirement and you do not see it in the brochure, please contact a Hubbell Sales Engineer...chances are we have what you need.

What should I know about Legionella disease?

Legionella is the bacteria responsible for Legionnaire’s Disease, an acute bacterial infection of the lower respiratory tract. This bacterium was first identified in 1977 by the Centers for Disease Control as the cause of an outbreak of pneumonia that caused 34 deaths at a 1976 American Legion Convention in Philadelphia. Pontiac Fever is a less severe, non-pneumonia, flu-like disease that is associated with and likely caused by Legionella bacteria. Legionella is a fairly common water bacterium and has been found to exist widely in many surface water sources including lakes, rivers, streams and ponds. It can also be found in ground water sources and some soils. At the levels found in these naturally occurring sources it typically does not pose a threat to public health. When the bacterium enters a domestic water system it can find an ideal host environment of warm water temperatures (105-115°F), stagnant water areas (isolated storage tanks and dead-end piping legs) and ample food sources (sediment, scale, deposits and biofilm). Under these conditions Legionella can rapidly colonize, forming higher concentrations that can pose the public health threat of Legionnaire’s Disease. There are many methods of controlling colonization of Legionella bacteria. However, a widely accepted and preferred method is to maintain the hot water system storage temperature continually at or above 140°F. Unfortunately, the elevated temperature necessary to minimize the growth of and kill Legionella bacteria has the potential to cause serious thermal shock and scalding injuries. As such, many plumbing engineers will specify that the water heater be set to maintain water temperatures at 140°F or higher to reduce the risk of Legionella, but then specify the appropriate mixing valve to ensure safe delivery of hot water to the fixtures. For a more thorough discussion of Legionella please go to here and the following link to the US Department of Labor OSHA information regarding Legionnaires’ Disease OSHA here

My question is not found in these FAQ’s, where do I look next?

Check out the Hubbell Product Center at Here for a complete listing of all technical documentation available by model. Get easy access to Installation, Operation & Maintenance manuals, Sales Brochures, Service Bulletins, Wiring Schematics, Parts Breakdowns and various other technical documents related to the full line of Hubbell water heaters. Or, if you prefer, please call us at 800-647-3165 and ask to speak to a Sales Engineer.

Downloads

Many of our products literature is available online for download. To open these files, a PDF viewer is required. If you do not have one, Adobe provides Acrobat Reader free of charge for viewing only. Use this link to download Acrobat Reader. You may also choose to download the file to your PC for future reference or printing. On most operating systems, simply right-click on the links below, choose "Save target as..." or "Save link as...", choose a location and it will save the document to your computer for future reference.

Model BWX Specific Questions

My question is not found in these FAQ’s, where do I look next?

Check out the Hubbell Product Center at Here for a complete listing of all technical documentation available by model. Get easy access to Installation, Operation & Maintenance manuals, Sales Brochures, Service Bulletins, Wiring Schematics, Parts Breakdowns and various other technical documents related to the full line of Hubbell water heaters. Or, if you prefer, please call us at 800-647-3165 and ask to speak to a Sales Engineer.

Where can I purchase replacement parts?

Parts are available for your Hubbell water heater direct from the factory. Please call 800-647-3165 and ask for our parts department. Please have your model and serial number handy.


For Further Assistance Please Contact a Hubbell Tech Support Rep.

Sam Wellington
samw@hubbellheaters.com
203-378-2659 x136
D.J. Dineson
djdineson@hubbellheaters.com
203-378-2659 x125
Hubbell Heaters
45 Seymour Street
P.O. Box 288
Stratford, CT 06615-0288
Tel: 203-378-2659
Fax: 203-378-3593
Product Center
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