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Electric Water Heater
Sanitizer Series
Model SD  (50-119 Gallon Capacity)
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High Performance and High Efficiency

The Sanitizer from Vaughn Thermal combines time proven technologies with our Hydrastone Cement lining for the industry's longest lasting and most reliable high efficiency water heater. The Sanitizer line of heaters is equipped with low watt density elements, thereby reducing the potential problem of mineral build up common to the failure of conventional elements. A cleverly designed cold water inlet connection gently diffuses the flow of cold water in the lower portion of the tank, resulting in improved energy efficiency and performance, while surface mounted thermistors and digital temperature control provide the end user with adjustable set points and differentials, providing ideal output and accuracy for any high temperature application. Lowest standby heat loss, proven components and the industry's longest lasting tank make the Sanitizer electric water heater the preferred choice for your high temperature water heating needs.


cULus Listed

  • No Anode Rod Required, as Vaughn's Hydrastone lining is immune to water quality and ideal for high temperature applications
  • Surface mounted thermistors ensure accuracy, key in high temperature, high volume installations
  • Digital readout on controller allows for easy confirmation and if necessary-adjustment of tank temperature and differentials
  • All plastic jacket protects heater and ensures years of reliable service in a high moisture environment
  • Innovative Cold Water Inlet & Diffuser, designed to reduce turbulence in the tank and facilitate tank stratification
  • All bronze tappings contribute to long life of the tank
  • Two 6000W Heating Elements
  • Optional Hand Hole Cleanout
Vaughn Sanitizer - How It Works

Model SD Water Heater Specifications

Capacities: 50 thru 120 Gallons
Orientation: Vertical
Voltages: 120 thru 480 Volt
Phase: 1 Phase
Inlet Size: 3/4" Female NPT
Outlet Size: 3/4" Male NPT
Drain Size: 3/4" GHT
Relief Valve Size: 3/4" Female NPT
Relief Valve Type: T&P, 210°F, 150 psi
Thermostat Range: 110-180°F (surface)
Hi-Limit: 200°F Manual Reset
Design TP: 300 psi
Elements: Copper or Incoloy Sheathed
Model S: 2" Polyurethane Foam
Model ME: 3" Polyurethane Foam
Tank Warranty:
Standard: 5 Year Non Pro-Rated
Optional: 10 Year Non Pro-Rated
Electrical Warranty: 1 Year
Jacket: High Impact Colorized Composite
Finish: White with Black Trim

General Specifications


The Vaughn tank is all welded heavy steel construction designed for 150 psi working pressure and tested to 300 psi. Each tank is centrifugally lined with 1/2" thick seamless high density Hydrastone cement with guaranteed 100% coverage of all steel surfaces. All tank openings are non-ferrous solid copper-silicon and are resistant to the corrosive effects of hot water.


3/4" combination cold water inlet and drain, with non-corrosive strata flow diffuser which prevents incoming cold water from mixing too rapidly with the hot water in the tank and assures delivery of more hot water - not lukewarm. A 3/4" hot water outlet with a uniquely designed built-in heat trap prevents heated water from radiating through the piping during standby periods.


Copper or Incoloy sheathed immersion heating elements with low watt density for prolonged life - up to 12 KW in 120, 208, 240, 277, 480 volt single phase. An adjustable surface thermostat operates in 110-170°F range.
Integral hi-limit with manual reset button for over-temperature protection is factory set at 190°F.
Upper and lower element configurations are factory wired for non-simultaneous operation.


Highly efficient thick polyurethane foam insulation meets or exceed the requirements of ANSI/ASHRAE/IESNA 90.1-2007 standards for energy efficiency and heat loss.


The exterior protective jacket is constructed from high impact composite material which cannot rust or corrode and does not require painting.

Outline Dimensions of Vaughn Residential Water Heater

Dimensional Data

Model Storage
Wattage &
S50 50 6000W 240V 22 3/4 51 300
S80 80 26 58 375
S80T 80 22 3/4 72 3/4 370
S100 100 26 69 3/8 435
S120 119 28 69 450

Recovery Capacity (Gal./Hour) For Various Wattages & Water Temperature Rises

Wattage 130° 120° 110° 100° 80° 60° 40° 20°
1500 4.6 5.0 5.5 6.1 7.6 10.1 15.4 30.7
2000 6.3 6.8 7.4 8.2 10.2 13.6 20.5 41.0
2500 7.8 8.5 9.2 10.2 12.8 17.1 25.6 51.2
3000 9.4 10.2 11.1 12.3 15.4 20.5 30.7 61.5
3500 11.0 11.9 13.0 14.3 17.9 23.9 35.9 71.7
4000 12.6 13.6 14.9 16.4 20.5 27.3 41.0 82.0
4500 14.1 15.3 16.7 18.4 23.1 30.7 46.1 92.2
5000 15.7 17.0 18.6 20.5 25.6 34.2 51.2 102.5
5500 17.3 18.8 20.5 22.5 28.2 37.6 56.3 112.7
6000 18.9 20.5 22.3 24.6 30.7 40.8 61.5 123.0

Electric Heating Element - Dual Ratings and Recovery Rates - 240 Volts to 208 Volts

1500 6 1123 4.5
2500 10 1881 7.5
3000 12 2253 9.0
3500 14 2628 10.5
4000 16 3004 12.0
4500 18 3380 13.5
5000 20 3762 15.0
6000 24 4507 18.0

Measurement of Resistance in Elements

1000 120 13.9
1000 240 57.8
1500 120 9.6
1500 240 38.1
2000 240 28.9
2500 240 23.1
3000 208 14.4
3000 240 23.1
3500 240 16.4
3800 240 15.2
4000 208 10.5
4000 240 14.4
4500 208 9.6
4500 240 12.8
4500 480 51.6
5000 208 8.7
5000 240 11.5
5000 480 46.0
5500 240 10.5
6000 208 7.2
6000 240 9.6
6000 480 38.1


A = W / V
R = V / A
W = A x V


  • 1.5" Male NPT inlet and outlet water connections
  • Alternate voltages available
  • 3" foam insulation for improved operating efficiency
  • 4" hand hole cleanout for hard water applications
Build Your Model


2" Foam Insulation
3" Foam Insulation





Top Element



Lower Element




Model Number:

Sanitizer Specific Questions

How does the heat trap work?

The Vaughn 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.

Why is dielectric isolation so important?

The unique design of the Vaughn 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 Vaughn indirect water heater far outlasts competitor models.

What is the average life of an electric water heater?

The most important factor related to the life expectancy of a water heater is the quality and type of storage tank. On an average the life expectancy of a glass lined electric water heater is about 10-12 years (according to the National Association of Home Builders 2007 Study of Life Expectancy of Home Components http://www.nahb.org/fileUpload_details.aspx?contentID=99359 ), compared to a cement lined electric water heater’s average life expectancy of 23-26 years (Independent study of over 25,000 installations for an Electric Utility). Of course, there are various other factors that affect longevity including pressure fluctuations, usage, water conditions, environmental conditions, etc.

What is a sacrificial anode and does a cement lined tank need one?

All water heaters constructed using a steel tank requires a lining to protect the internal steel surfaces from corrosion. Certain linings (i.e. glass and epoxy), due to their nature, have unavoidable holes and imperfections resulting in exposure of the steel tank. As a result of this deficiency, the manufacturer will install an anode rod(s) in an attempt to delay corrosion of the steel tank. An anode rod is typically made of aluminum, magnesium or zinc, is a maintenance item that requires periodic inspection and replacement, and is often times the cause of a “rotten egg” odor to your hot water. Often referred to as a sacrificial anode rod because, over time, it slowly dissolves, sacrificing itself as it is attacked by aggressive substances in the water which would otherwise attack the steel tank through the pinholes and imperfections of the glass or epoxy lining. A cement lined steel tank on the other hand does not require an anode because of the thickness and guaranteed 100% coverage of the cement lining over all internal surfaces of the steel tank. This eliminates the need for an anode rod in a cement lined water heater, resulting in a significantly longer life compared to a glass or epoxy lined water heater. For a further discussion please click on the following link Cement Lining

General Questions

Are Vaughn heaters made in the USA?

Yes. Vaughn water heaters are all made in the USA and our factories located in Connecticut and Massachusetts and qualify for incentives under The Buy American Act and the American Recovery and Reinvestment Act (ARRA). For more information go to the following link Here.

Where can I purchase a Vaughn water heater?

There are numerous ways to purchase a Vaughn water heater depending upon the model you desire and your geographic location. The easiest way is either to visit our "Where to Buy" option in the red menu bar across the website, or contact Vaughn directly at 978-462-6683 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.

What code requirements are applicable for my installation?

The installation of water heaters are mostly governed by the Uniform Plumbing Code (or CPC in California), Uniform Mechanical Code, and National Electrical Code. These are standard codes that are used across the United States, and each state can amend them as they wish. To take it further, each city and county jurisdiction has assigned one or more building officials with what is called Administrative Authority. This Authority" allows each jurisdiction the right to interpret the codes as they see fit. Because of this many cities differ on their requirements. Vaughn strongly recommends that you contract with a plumbing engineer who knows and understands the intricacies of the building code requirements for your location.

Is it OK if my plumbing system has plastic pipes (PVC or PEX)?

Yes. All Vaughn water heaters will work with both types of plastic piping.

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

Check out the Vaughn Product Center at Here for a complete listing of all technical Operation & Maintenance manuals documentation available by model. Get easy access to Installation Sales Brochures Service Bulletins Wiring Schematics Parts Breakdowns and various other technical documents related to the full line of Vaughn water heaters. Or if you prefer please call us at 978-462-6683 and ask to speak with Sales.


Technical Documents

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.

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26 Old Elm Street
P.O. Box 5431
Salisbury, MA 01952-5431
Tel: 978-462-6683
Fax: 978-462-6497

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