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
Indirect fired storage tank water heater model T Transflow
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Model Transflow

Indirect Fired Water Heater

35-120 Gallon Capacities

The Hubbell T Model water heater utilizes an existing supply of boiler water to heat domestic potable water. The Transflow model storage tank is fitted with a specially designed, high efficiency heating coil which transfers heat from the boiler water to the domestic water in the tank. It's advanced design has no moving parts and does not require any electrical connections, while the high quality materials used in construction of its tank and heating coil ensures long service life. When you specify and install a Hubbell Transflow water heater, you will have confidence in knowing that the owner will be provided with a quality product that is a trouble-free and long lasting source for hot water.

Learn More About Hydrastone Cement Lining

cULUS listed AHRI certified
  • Heavy Duty Construction

    • Hydrastone cement lining provides long tank life
    • Copper-silicon tappings cannot rust or corrode
    • High impact composite jacket cannot rust or corrode and eliminates damage
  • High Efficiency

    • 2" thick polyurethane foam insulation reduces standby heat loss providing the industry's highest efficiency heater
  • Advanced Heating Coil

    • Heating coil can be easily removed for simple maintenance
    • Heavy gauge copper fin tube coil provides maximum heat transfer

Heating Coil Design - Top Mount Coil

Model Transflow Coil Design - Top Mount Coil

Top Mount Coil - Typical Installation

Model Transflow Top Mount Coil - Typical Installation

Transflow Model Water Heater Specifications

Capacities: 35 thru 120 Gallons
Orientation: Vertical
Drain Size: 3/4" Hose Connection
Tank Rating: 150 psi WP, 300 psi TP
Coil Type: Removable
Coil Material: Copper Fin Tube
Coil Rating: 150 psi WP, 300 psi TP
Approvals: cULus, AHRI, IBR
Jacket: High Impact Colorized Composite
Color: White and Black
Thermostat:
Operation Voltage: 24 Volt AC/DC (Constant)
Switching Relay: S.P.S.T, 120 Volt, 10 Amp max.
Temperature Range: 110-160°F
Differential: 2-20°F (Adjustable)
Tank Warranty (Residential):
Top Mount Model: 10 Years
Side Mount Model: 7 Years
Tank Warranty (Commercial):
Top Mount Model: 5 Years
Side Mount Model: 3 Years

Standard Equipment

  • 1/2" thick Hydrastone cement lined steel tank
  • All copper-silicon non-ferrous tank openings
  • Removable heating coil
  • High efficiency copper fin tube heating coil
  • Immersion adjustable electronic thermostat to control the flow of boiler water through the heating coil
  • ASME rated temperature and pressure relief valve set at 150 psi, 210°F, 200,000 BTU max
  • 2" thick polyurethane foam insulation meets or exceeds the requirements of ANSI, ASHRAE, IESNA 90.1-2007
  • High impact colorized composite protective jacket

Outline Dimensions

Model Transflow (Side Mount Coil)

Outline Dimensions

Base Model Storage Capacity (Gallons) Standby Heat Loss °F/Hour Dimensions (Inches) Inlet / Outlet Size (NPT) Shipping Weight (Lbs)
Overall Diameter Overall Height Inlet "A" Coil "B" Thermostat "C" T&P Valve "D"
TS65 65 0.44 26 48 8 10 14 40 3/4" 308
TS80 80 0.41 26 58 8 10 14 51 3/4" 338
TS80C 80 0.41 26 58 8 10 14 51 1-1/2" 340
TS120 120 0.39 28 69.25 8 11 17 62 3/4" 420
TS120C 120 0.39 28 69.25 8 11 17 62 1-1/2" 425

Model Transflow (Top Mount Coil)

Outline Dimensions

Base Model Storage Capacity (Gallons) Standby Heat Loss °F/Hour Dimensions (Inches) Relief Valve Size Inlet / Outlet Size (NPT) Withdrawal Space
"E"
Shipping Weight (lbs.)
Overall Diameter Overall Height Drain "A" Inlet "B" Thermostat "C" T&P Valve "D"
TT35 35 0.72 22.75 39 8 Top 14 Top 3/4" 3/4" 36" 185
TT50 50 0.56 26 40 8 Top 14 Top 3/4" 3/4" 36" 238
TT70 70 0.45 28 46.5 8 Top 14 Top 3/4" 3/4" 41" 290
TT70C 70 0.45 28 46.5 8 8 14 38.5 3/4" 1-1/2" 41" 290

Coil Pressure Drop Chart

Model Transflow Coil Pressure Drop Chart

Heating Coil Selection Chart with Recovery Ratings (Side Mount Coil)

Base Model Storage Capacity (Gallons) Coil Position Coil Type Coil Model No. Coil Connection Size (NPT) 1st Hour Rating (Gallons) Continuous Demand Rating (Gal/Hr) Boiler Water Flow Rate (GPM)
TS65 65 Side Single Wall 20S 1" 295 235 13
Double Wall 10D 3/4" 142 82 11
TS80
TS80C
80 Side Single Wall 20S 1" 307 235 13
Double Wall 10D 3/4" 154 82 11
TS120
TS120C
120 Side Single Wall 20S 1" 339 235 13
Double Wall 10D 3/4" 186 82 11
Recovery ratings based upon the supply of 200°F boiler water to a single heating coil to heat domestic potable water from 50-140°F. For 180°F boiler water reduce recovery ratings by 25%.
Recovery ratings based upon one heating coil installed in tank. For additional coils, use the continuous demand rating.

Heating Coil Selection Chart with Recovery Ratings (Top Mount Coil)

Base Model Storage Capacity (Gallons) Coil Position Coil Model No. Coil Type Coil Connection Size (NPT) 1st Hour Rating (Gallons) Continuous Demand Rating (Gal/Hr) Boiler Water Flow Rate (GPM)
TT35 35 Top 15S Single Wall 3/4" 230 203 6
15D Double Wall 3/4" 124 94 4
TT50 50 Top 15S Single Wall 3/4" 250 214 6
15D Double Wall 3/4" 142 94 4
TT70 70 Top 16S Single Wall 3/4" 335 271 6
16D Double Wall 3/4" 175 111 4
TT70C 70 Top 19S Single Wall 1" 385 321 13
Recovery ratings based upon the supply of 200°F boiler water to the heating coil to heat domestic potable water from 50-140°F. For 180°F boiler water reduce recovery ratings by 25%.

Optional Equipment

  • 1 1/2" Male NPT inlet and outlet water connections
  • Double wall copper heating coil with a leak detection port
  • Integrally welded seismic attachment points
  • Electric back-up heating element in various wattages in single or three phase voltages
  • Bulb and capillary mechanical thermostat (100-240°F) to accept 24-600 VAC operation voltage; SPST switch 120 Volt (16 Amp), 208 Volt (9 Amp), 240 Volt (8 Amp)

Model Number Designation TS (Side Mount)



Step 1
Model:
TS = Side
Mount
Step 2
Storage
Capacity:

65 - 120
Gallons
-
Step 3
# Coils
Upper:

0, 1, 2
-
Step 4
# Coils
Lower:

1, 2

Step 5
Coil
Model #:

See Coil
Selection
Chart
-

Step 6
KW
Selection:

1.5 - 20 KW

Step 7
Voltage/Phase/Hz:
A = 120-1-60
RS = 208-1-60
S = 240-1-60
W = 277-1-60
T4S = 480-1-50/60
-

Step 7
# Elements:
1 = Upper
Position Only
(Single)
2 = Upper
& Lower
Position (Dual)

Model Number Designation TT (Top Mount)



Step 1
Model:
TT = Top
Mount
Step 2
Storage
Capacity:

35 - 70
Gallons
Step 3
Coil Model #:
See Coil
Selection
Chart
-

Step 4
KW Selection:
1.5 - 20 KW

Step 5
Voltage/Phase/Hz:
A = 120-1-60
RS = 208-1-60
S = 240-1-60
W = 277-1-60
T4S = 480-1-50/60
-

Step 6
No. Elements:
1 = Upper Position
Only (Single)
2 = Upper & Lower
Position (Dual)

Model Transflow Specific Questions

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

Why is dielectric isolation so important?

The unique design of the Hubbell heat exchanger electrically isolates the heat exchanger from the tank by means of a non conductive barrier installed between the two. This provides dielectric isolation between the tank and the heat exchanger thereby eliminating electrolysis between the two due to dissimilar metals. This feature is one reason why the Hubbell indirect water heater far outlasts competitor models.

Why is a cement lined tank a better choice than stainless steel tank?

In almost all cases, a cement lined steel tank is a more robust tank compared to stainless steel. The weakness of a stainless steel tank is in the materials susceptibility to SCC (Stress Corrosion Cracking) caused by chlorides, bromides, iodides and fluorides in the water. The combination of residual stresses from welding, roll forming and stamping, and the cyclic stress from operating in a hot water system are sources of tensile stress, that when above a certain threshold stress, will make a stainless steel water heater tank susceptible to stress corrosion cracking. Cement lined steel tanks are not susceptible to this condition, and therefore are more resistant to corrosion and withstand the pressure and temperature cyclical operation of a water heater.

Is the Hubbell heat exchanger removable?

Yes. The heat exchanger is fully removable in all Hubbell Model T Transflow indirect water heaters. The benefit to having a removable heat exchanger is that the coil can be removed for cleaning and de-scaling for improved performance and efficiency when used in hard water applications. It should be noted that the heat exchanger is not removable and the coil cannot be cleaned in many other indirect water heater brands.

What electrical power do I need for the thermostat?

The thermostat is powered directly from the 24 volt from the boiler T-T.

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 Transflow 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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