Electric Low Capacity

Model E

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

Model HE / HSE

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

Model PBX

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

Model CE 110

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

Model Tankless

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

Model J

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

Model JTX

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

Model SE

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

Model HX / TX

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

Model SH & H

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

Model GX

Gas tankless water heater Model GX
  • Commercial Gas Tankless
  • Integrated Pump
  • 200,000 and 250,000 BTUs

Model GXT

Condensing gas storage tank water heater Model GXT
  • Integrated Tank with Tankless
  • Hydrastone Cement
  • 200,000 to 250,000 BTUs

Model DGX

DI/RO gas fired tankless water heater Model DGX
  • DI/RO Water Heater
  • Gas Tankless
  • 199,950 and 250,000 BTU

Model JBX

Condensing gas tankless booster water heater Model JBX
  • Gas Tankless Booster
  • For Commercial Kitchens
  • 150,000 / 200,000 / 250,000 BTU

Model GSE

Condensing gas storage tank water heater Model GXT
  • Gas Storage Tank
  • Hydrastone Cement
  • 200,000 to 250,000 BTUs
   

Model ST

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

Model STX

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

Model PS

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

Model F

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

Model BWX

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

Model BW

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

Model Transflow

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

Model SLN

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

Model CR

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

Model ER

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

Model V

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

Model ETX

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

Model HD

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

Model D

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

Model EMV

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

Packaged Skid

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

Model ME

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

Model MSH

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

Model MSE

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

Model MTX

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

Model 177

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

Integrated Skid

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

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
Special Purpose
Marine
Elements & Exchangers
Resource Center
Electric hazardous location water heater Model ER
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Model ER

Explosion Resistant Water Heater

10-120 Gallon Capacity, 1.5-58 KW, Single or Three Phase

The Hubbell ER explosion resistant water heater is the right choice for applications in hazardous atmosphere locations. All operating controls are housed within the heavy duty explosion resistant enclosure to ensure safe operation in a hazardous location. Furthermore, because of the exceptional corrosion resistant properties of the Hubbell Hydrastone cement lined tank, the ER model water heater is proven to last longer than other conventional tank designs.

When you specify and install a Hubbell Model ER for a hazardous location you will have confidence in knowing that the owner will be provided with a quality product that is a safe, long lasting and trouble-free source for hot water.

Learn More About Hydrastone Cement Lining

cULUS Listed
  • Built For Safe Operation In a Hazardous Location

    • UL and CSA listed housing rated for operation in Class 1 Division 1 & 2, Groups B, C, D; Class 2 Division 1 & 2 Groups E, F, G; Class 3, Division 1 & 2; NEMA 4, 7BCD, 9 EFG
  • Heavy Duty Construction

    • Hydrastone cement lining provides long tank life
    • Copper-silicon alloy tappings cannot rust or corrode
    • High impact composite jacket cannot rust or corrode and eliminates damage during installation and transit
  • Packaged System

    • All controls factory selected and wired for efficient installation and operation
    • Ready for electrical and plumbing service connections

Model ER Water Heater Specifications

Capacities: 10 thru 120 Gallons
Orientation: Vertical
Voltages: 120 thru 600 Volt
Phase: 1 or 3 Φ
Inlet Size: 3/4" Female NPT
Outlet Size: 3/4" Male NPT
Drain Size: 3/4" GHT
Relief Valve Opening: 3/4" Female NPT
Relief Valve Type: T&P, 210°F, 150 psi
Thermostat Type: Adjustable
Thermostat Range: 110-170°F
Hi-Limit: 190°F
Design Pressure: 150 psi WP, 300 psi TP
Elements: High Quality Immersion Electric
Insulation: 2" Polyurethane Foam
Tank Warranty: 3 Years Non Pro-Rated
Electrical Warranty: 1 Year
Jacket: High Impact Colorized Composite
Finish: White with Black

Standard Equipment

  • Explosion resistant electrical enclosure rated for operation in a Class 1, Division 1 & 2, Groups B, C, D; Class 2, Division 1 & 2 Groups E, F, G: Class 3, Division 1 & 2; NEMA 4, 7BCD, 9 EFG; UL and CSA listed for hazardous area locations
  • Heavy Duty 1/2" thick Hydrastone cement lined storage tank for long service life
  • Non-ferrous solid copper-silicon tank openings
  • Built-in heat trap to improve operating efficiency
  • High quality long lasting immersion heating elements
  • Magnetic contactor (3 Φ only)
  • Adjustable temperature controller (110-170°F)
  • 2" Polyurethane foam insulation for minimum standby heat loss
  • High impact colorized composite protective jacket
  • ASME/CSA rated combinated temperature and pressure relief valve set at 150 psi, 210°F
  • 3/4" Male NPT inlet and outlet connections (except 45, 54, 58 KW models which have 1 1/2" Male NPT)

Outline Dimensions

Outline Dimensions


Base Model Storage Capacity (Gallons) KW Selection & Electrical Supply Dimensions (Inches) Shipping Weight (lbs)
120V 1 Phase 208 - 480V 1 Phase 208 - 480V 3 Phase Overall Diameter Overall Height Inlet "A" T&P Valve "B"
ER10 10 1.5 2,3 3,4,5,6,8,10 20 21 7 15 160
ER20 20 20 33 7 27 200
ER30 30 1.5 2, 3.5, 4.5, 5.5, 6 20 41.5 7 34 230
ER40 40 20 58.75 7 51 280
ER50 50 22.75 51 7 43 295
ER65 65     6,8,10,12,15,20,30,35,40,45,54,58 26 48 8 40 360
ER80 80 26 58 8 51 395
ER100 100 26 69.5 8 62 425
ER120 120 28 69.25 8 62 475
Note: For alternative voltages, please contact us directly. If storage capacity greater than 120 gallons is required, please see Model SH

Formulas To Solve For!

Model ER Formulas to solve for!

Optional Equipment

  • Solid 90/10 Copper-Nickel tank for maximum tank life
  • 1 1/2" Male NPT brass inlet/outlet water connections
  • Type 316L Stainless Steel tank construction
  • Low water cut out to disengage electrically the heating elemtn in the event of no/low water condition in the storage tank
  • Integrally welded seismic attachment points
  • 3" Foam insulation
  • Alternate element sheath material (Incoloy, Stainless Steel, Inconel, other)
  • Outdoor weather package

Model Number Designation ER



Step 1
Model:
ER

Step 2
Storage Capacity:
10-120 U.S. Gallons
-
Step 3
KW Selection:
1.5 - 58 KW
Step 4
Tank: SL = Cement Lined
CN = Copper Alloy
SS = Stainless Steel

Step 5
Voltage/Phase/Hz:
A = 120-1-60
RS = 208-1-60
R = 208-3-60
S = 240-1-60
T = 240-3-60
W = 277-1-60
T3 = 380-3-50/60
T7 = 415-3-50/60
T5 = 440-3-60
T4S = 480-1-60
T4 = 480-3-60
T6 = 600-3-60

Example:

ER10-1.5SLA

Is a hazardous location model ER water heater with 10 gallons of storage and 1.5 KW heating element. It is a cement lined steel vessel and has an electrical rating of 120 volt 1 phase.

Model ER Specific Questions

What hazardous atmospheres is the Hubbell model ER approved for?

You will need to advise your Hubbell sales engineer specific information regarding the hazardous location rating you require for your application including Class (I, II or III), Division (1 or 2), Group (A, B, C or D) and finally the Temperature Class (T1 thru T6). Hubbell carries UL approval for “Control Panels and Assemblies for Use in Hazardous Locations” under file NNNY.E358352 Here and “Control Panels and Assemblies for Use in Hazardous Locations Certified for Canada” under file NNNY7.E358352 Here

How does the heat trap work?

The Hubbell water heater is constructed with a heat trap installed within the water heater’s hot water outlet connection. This device helps prevent heat from escaping through the storage tank’s hot water outlet during standby periods, resulting in improved operating efficiency. The heat trap is constructed from a specially designed bronze nipple with an internal floating ball that during standby periods of no flow settles and closes off the storage tank thereby preventing thermal conduction of hot water radiating through the hot water outlet.

What is a purge and pressurized system?

The concept of a purge & pressurized system is to allow the use of standard NEMA 4/12 enclosures in hazardous locations. A Hubbell model ER explosion resistant purge & pressurized water heater includes a factory installed purge & pressurization system attached to the enclosure which supplies a flow of clean air or an inert gas to maintain a positive pressure inside the enclosure and to reduce the internal concentration of hazardous material and gases to a safe level. This process starts by purging the interior of the enclosure of hazardous airborne impurities and gases to acceptable levels of concentration. Once these levels are met, the process changes to that of pressurization. This change does not lead to a break in the flow of air or inert gas because it would be then be possible for hazardous contaminants to enter/reenter the enclosure possibly leading to unacceptable levels. Pressurization now keeps the pressure inside the enclosure constant and above the ambient pressure so that the lower pressure external hazardous atmosphere cannot penetrate the enclosure. For a detailed discussion go to to Here

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

Why is Hydrastone Cement a better choice over glass lining?

Cement lining provides guaranteed 100% coverage with a minimum thickness of 0.5” over all internal tank surfaces. In comparison, glass lining is approximately 0.005” thick and includes imperfections, pinholes and variation in coverage thickness resulting in portions of unprotected steel tank exposed to corrosion. In an attempt to compensate, glass lined tanks include a sacrificial anode in an effort to slow down the corrosion of the tank. Cement lined tanks on the other hand do not require an anode due to the integrity of the lining. As such, a cement lined tank will far outlast a glass lined tank. For a more complete explanation of the benefits of the Hubbell cement lining please click on the following link Cement Lining

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 ER 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
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