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

Buffer
Tanks

ASME and None ASME storage vessels Hubbell Model BufferTank
  • Carbon Steel Construction
  • Long Warranty
  • ASME Section VIII, Division 1
   
       

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
DI/RO gas fired tankless water heater Model DGX
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Model DGX

DI / RO Gas Tankless Water Heater

For Heating Ultrapure Reverse Osmosis Deionized Water - Available in 199,950 and 250,000 BTU

The Hubbell Model DGX is a dependable and trouble-free source for hot water in continuous, cyclical, or variable flow system in a wide range of hot deionized water, RO water and mildly corrosive applications. The Hubbell Model DGX is a dependable and trouble-free 316L stainless steel coil which is impervious to the corrosive effects of hot water and provides maximum vessel and longevity. Only the highest quality materials and components are used to ensure reliable operation in even the most demanding application. The DGX Model is ready for immediate installation and service. When you specify and install a Hubbell DGX, you will have confidence in knowing the owner will be provided with a trouble-free and long lasting source for DI/RO water.


cETLUS Listed Ultra Low NOx ASME Optional
  • Industrial Grade Construction

    • High grade construction materials provide maximum longevity
    • Packaged with advanced controls for trouble-free installation and operation
  • Corrosion Resistant

    • All Type 316L stainless steel construction resists corrosion
    • Heating coil is unwelded 316L SS to ensure long operating life
  • Scalable Manifold Design

    • Up to 10 units with thermistor controller
    • Offers built-in redundant scalable design
    • Scalable design as load increases making it easy to add additional units

How It Works

The Hubbell DGX utlizes a down fire burner through a non-welded all 316L stainless steel heat exchanger with the most advanced features in the tankless industry


Model DGX Water Heater Specifications

Model Specification DGX200 DGX250
Type Indoor, Wall hung, Fully condensing
Fuel Preset for NG / LP convertible
Minimum / Maximum Input (Btu/h) 30,000 / 199,950 30,000 / 250,000
Combustion Efficiency 98%
Thermal Efficiency 94% 92%
Energy Factor 0.93 N/A
Dimensions H x W x D (inches) 25.9 x 17.5 x 14.2 (3.7 cu. ft)
Weight (lbs) 90 90
Water Inlet / Outlet Connection 3/4" NPT
Gas Inlet Connection 3/4" NPT
Minimum Flow Rate 0.6 GPM
Ignition Electronic Spark Ignition
Venting Type Direct Vent (2 pipe - intake & exhaust), Power vent (1 pipe - exhaust only)
Venting Materials Sch. 40 PVC, Sch. 40 CPVC, Polypropylene, Stainless Steel
Max 3" Vent Length - Single Pipe / Power Vent 200 ft, deduct 5 ft per 90° elbow 130 ft, deduct 5 ft per 90° elbow
Max 3" Vent Length - Two pipe / Direct Vent 100 ft, deduct 5 ft per 90° elbow 65 ft, deduct 5 ft per 90° elebow
Max 2" Vent Length - Single Pipe / Power Vent
(2" not allowed at elevations above 4,000 ft)
26 ft, deduct 5 ft per 90° elbow N/A
Max 2" Vent Length - Two Pipe / Direct Vent
(2" not allowed at elevations above 4,000 ft)
21 ft, deduct 5 ft per 90° elbow
Common Venting Yes
Safety Features Flame Rod, Thermal Fuse, Overheat Prevention Device, Fan Speed Monitor, Flue Temperature Monitor, Blocked Vent Detector, Water Leak Detector, Water Shut Off Valve, 2X10A Fuse, Dual Flame Sensing
Water Pressure Min / Max (PSI) 30 / 150
NG/LP-Minimum Static Gas Pressure 1/2" 5" (non-corrugated, black iron) 6" (non-corrugated, black iron)
NG/LP-Minimum Static Gas Pressure 3/4" 2.5" (non-corrugated, black iron)
NG/LP-Maximum Static Gas Pressure 14"
Gas Pressure for Adjustments 8" for NG, 11" for LP
Electrical 120V AC, 60 Hz
Power Consumption 500W (Max 4.2 Amps), 8W (Standby)
Features DGX200 DGX250
Cascading Masterless, 10 units
Heat Exchanger Expandable, 316L Stainless Steel
Certifications DGX200 DGX250
Energy Star Listed Yes No
SQAQMD Certified 2012 Low Nox Yes No
ETL Listed (A NZI Z21.10.3) Yes Yes
Performance DGX200 DGX250
Hot Water Capacity (35°F Rise) 10.8 GPM 13.2 GPM
Hot Water Capacity (45°F Rise) 8.4 GPM 10.3 GPM
Hot Water Capacity (77°F Rise) 5.0 GPM 6.0 GPM
Commercial Mode Temp. Setting Range 100 - 185°F (adjustable 1° increments)
Note: Energy Star and SQAQMD Certified 2012 Low Nox on models DGX200 and DGX200P Models
Continuing research results in product improvement; therefore specifications are subject to change without notice. For most updated information, consult the factory directly.

Top Connections
Description Specifications ²
Gas Supply Inlet Connection 3/4" Male NPT
Water Supply Inlet Connection 3/4" Female NPT
Heated Water Outlet Connection 3/4" Female NPT
Exhaust Gas Vent 3" O.D. PVC Schedule 40
Fresh Air Intake 3" O.D. PVC Schedule 40
Bottom Connections
Description Specifications ¹
Drain Connection 3/4" Female NPT
Condensate Drain Connection 3/4" Nipple (3/4" flex hose)
Power Supply 120V AC Power Cord

¹ Requires a 3" or 2" reducer when using 2" venting pipe
² Using sizes other than specified can cause damage to the water heater and will void the warranty.
Warranty Commercial - Heat Exchanger coil - 5 year, Parts - 3 years, Labor - 1 year

Outline Dimensions

Outline Dimensions

Additional Technical Information

Venting

Hubbell Maximum Vent Length Table
Number of units Venting Type Duct Size 2" 3" 4" 6" 8"
btu/h
Input
DGX
200
DGX
200
DGX
250
DGX
200
DGX
250
DGX
200
DGX
250
DGX
200
DGX
250
1 1 pipe - PV 26 200 130 200 130
2 pipe - DV 21 100 65 100 65
2 1 pipe - PV 100 65
2 pipe - DV 100 65
3 1 pipe - PV 100 30 200 130
2 pipe - DV 50 30 100 65
4 1 pipe - PV 200 130
2 pipe - DV 100 65
5 1 pipe - PV 200 130
2 pipe - DV 100 65
6 1 pipe - PV 200 130
2 pipe - DV 100 65
7 1 pipe - PV 150 45
2 pipe - DV 75 45
8 1 pipe - PV 100 30 200 130
2 pipe - DV 50 30 100 65
10 1 pipe - PV 200 130
2 pipe - DV 100 65
Note: Reduce the maximum equivalent length above by 5 feet per 90° elbow and by 2 feet per 45° elbow used. Do not exceed the above set limits.


Condensing Tankless Configurations

Hubbell condensing tankless water heaters are the ideal solution for water demand up to 2.5 million BTUs. Hubbell units can be daisy chained within minutes through our factory provided manifold system without the need to buy a separate master controller. Each unit automatically recognizes when another unit is brought online or taken offline. Up to 10 units can be common vented.


  • Engineered and built to meet your exact needs
  • Factory integrated system simplifies installation
  • Factory installed components ensure reliable system performance
Contact a Sales Engineer to discuss your Packaged System

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 DGX Specific Questions

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 are the minimal mounting clearances?

From combustibles: Top 6”, Back 5/8”, Sides 1”, Front 2”, Bottom 12”. From non-combustibles: Top 2”, Back 5/8”, Sides 1/2”, Front 2”, Bottom 12”

Why do I need a special heater in RO/DI water applications?

Two main reasons: Heater Longevity and Process Contamination. A standard water heater when used with deionized (DI) or reverse osmosis (RO) water will deteriorate, corrode and fail very quickly due to corrosion of the heater components. Use of a standard heater in RO/DI water will also void all manufacturers warranties. The aggressiveness of RO/DI water will corrode carbon steel glass lined tanks, copper and bronze heating elements and other componets used in a standard water heater and will cause premature failure. Depending on the properties and temperature of the water, failure could be as quickly as a matter of days. The corrosion will also cause contamination of the RO/DI water as the corrosion process sheds undesirable metal particulates into the RO/DI process water. Suitable materials of construction for a water heater used in a RO/DI water application include 316L stainless steel, Inconel 600, Incoloy 800 and cement lined steel. Hubbell has a wide range of water heaters specifically designed for heating RO/DI water including gas and electric storage heaters and gas and electric tankless heaters.

What if I need more than 250,000 BTU/Hr for my application?

Simple, you would install multiple units to achieve your desired BTU. You can install and manifold together upto 10 Hubbell gas tankless water heaters without the need for a a master controller. If you would like to simplify the installation of a multi heater system, Hubbell can factory integrate the heaters into a rack system including manifold water piping to simplify the installation process.

What type of venting can I use?

The Hubbell gas tankless heater can be vented with PVC, CPVC or Polypropylene. Please see Installation, Operation and Maintenance manual for complete venting details.

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.

Model DGX 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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