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Long Lasting and Trouble Free 

Commercial Light Duty Water Heater

30-119 Gallon
Efficient
Long Lasting
Superior Performance

The Vaughn Light Duty Commercial (LDC) water heaters incorporate a number of features not found in other conventional heaters which makes them better suited to resist the highly corrosive effects of hot water. The heart of a Vaughn water heater is a superior storage vessel that utilizes a specially formulated HydraStone lining, solid copper-silicon threaded tank openings, and a built-in heat trap device, all of which ensure a longer-lasting and energy-efficient water heater. When you specify and install a Vaughn LDC water heater, you will have confidence in knowing that the owner will be provided with a long-lasting, trouble-free water heater.

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light duty commercial

Features

  • 1/2" HydraStone lining provides extended tank life with no water quality restrictions
    Copper-silicon tappings cannot rust or corrode
  • High impact composite jacket eliminates damage during installation and transit, and will not rust or corrode resulting in a maintenance-free jacket
  • 2"  of premium non-CFC polyurethane foam insulation provides the industry's lowest standby heat loss
  • A hot water outlet with a built-in heat trap ensures efficient operation, keeping energy stored in the vessel
  • Commercial grade low watt density elements reduce mineral buildup and provide years of reliable hot water service.
  • No Sacrificial Anode Rod reduces operation expenses by eliminating periodic inspection and replacement costs associated with maintaining an anode rod
  • Warranty 5 year non-prorated on tank
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Product Specifications

  • Tank: HydraStone Lined Steel
  • Capacities: 30 thru 119 Gallons
  • Orientation: Vertical
  • Voltages: 208 thru 600 Volt
  • Phase: 1 Φ and 3 Φ
  • 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: 190°F Manual Reset
  • Design Working Pressure: 150 psi
  • Design Testing Pressure: 300 psi
  • Elements: Copper or Incoloy Sheathed
  • Insulation: Model S: 2" Polyurethane Foam, Model ME: 3" Polyurethane Foam
  • Warranty: 5-year non-pro-rated on the tank, Optional 10-year non-pro-rated on the tank
  • Electrical Warranty: 1 Year
  • Jacket: High Impact Composite
  • Color: White and Black

Standard Equipment

  • 1/2" HydraStone lining
  • Non-ferrous solid copper-silicon threaded openings for maximum corrosion resistance
  • Magnetic contactor(s) are heavy-duty resistive load type rated for 200,000 cycles
  • Incoloy sheathed immersion heating elements
  • Built-in heat trap to improve operating efficiency (3/4" inlet/outlet models only)
  • Surface thermostat 110-180°F range
  • Surface safety hi-limit cut out with manual reset button (190°F)
  • Immersion safety hi-limit cut out with manual reset button (Standard on heaters 45 KW and above)
  • 1 1/2" Male NPT inlet/outlet connections (Standard on heaters 45 KW and above)
  • ASME/CSA rated temperature and pressure relief valve set at 150 psi, 210°F
  • 2" non-CFC polyurethane foam insulation
  • Cold water inlet diffuser with drain valve
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Build Your Model

STEP 1:

Insulation

2" Foam Insulation
    3" Foam Insulation

STEP 2:

Storage
Capacity

Gallons

STEP 3:

Top Element
KW

KW

STEP 4:

Lower Element
KW

KW

STEP 5:

Voltage


STEP 6:

Phase


Model Number:

Additional Product Details

1 Φ Wattage and Dimensional Data

Storage
Capacity
(Gallons)
Base
Model
Number
Dimensions (Inches) Shipping
Weight
(lbs.)
Model S
Overall
Diameter
Model ME
Overall
Diameter
Overall
Height
Floor
to Inlet
"A"
Floor
to T&P
"B"
30 S/ME 30 20 22.75 40.625 7.5 34.25 185
40 S/ME 40 20 22.75 56.25 7.5 50 240
50 S/ME 50 22.75 25 49.75 7.875 42.875 270
55 S/ME 55 22.75 25 58.25 7.875 50.875 340
80 S80/ME 80 26 28 57.25 7.875 44.875 385
100 S/ME100 26 28 67.5 7.875 60.375 400
119 S/ME120 28 30 67.75 7.875 60.375 470

Notes:

1. 120 volt models are available in 1500, 2000 and 2500 Watts only.
2. The 6, 10, and 20 Gallon models are available in lower element design only. All other sizes have both upper and lower element banks of identical wattage and are wired for non-simultaneous operation. 

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

Heating Power Water Temperature Rise (Degrees °F)
Wattage BTU/Hr 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10
500 1,706 1.4 1.5 1.6 1.7 1.9 2 2.3 2.6 2.9 3.4 4.1 5.1 6.8 10.2 20.5
1,000 3,412 2.7 2.9 3.1 3.4 3.7 4.1 4.5 5.1 5.8 6.8 8.2 10.2 13.6 20.5 40.9
1,500 5,118 4.1 4.4 4.7 5.1 5.6 6.1 6.8 7.7 8.8 10.2 12.3 15.3 20.5 30.7 61.4
2,000 6,824 5.5 5.8 6.3 6.8 7.4 8.2 9.1 10.2 11.7 13.6 16.4 20.5 27.3 40.9 81.8
2,500 8,530 6.8 7.3 7.9 8.5 9.3 10.2 11.4 12.8 14.6 17 20.5 25.6 34.1 51.1 102.3
3,000 10,236 8.2 8.8 9.4 10.2 11.2 12.3 13.6 15.3 17.5 20.5 24.5 30.7 40.9 61.4 122.7
3,500 11,942 9.5 10.2 11 11.9 13 14.3 15.9 17.9 20.5 23.9 28.6 35.8 47.7 71.6 143.2
3,800 12,966 10.4 11.1 12 13 14.1 15.5 17.3 19.4 22.2 25.9 31.1 38.9 51.8 77.7 155.5
4,000 13,648 10.9 11.7 12.6 13.6 14.9 16.4 18.2 20.5 23.4 27.3 32.7 40.9 54.5 81.8 163.6
4,500 15,354 12.3 13.2 14.2 15.3 16.7 18.4 20.5 23 26.3 30.7 36.8 46 61.4 92.1 184.1
5,000 17,060 13.6 14.6 15.7 17 18.6 20.5 22.7 25.6 29.2 34.1 40.9 51.1 68.2 102.3 204.6
5,500 18,766 15 16.1 17.3 18.8 20.5 22.5 25 28.1 32.1 37.5 45 56.3 75 112.5 225
6,000 20,472 16.4 17.5 18.9 20.5 22.3 24.5 27.3 30.7 35.1 40.9 49.1 61.4 81.8 122.7 245.5
6,500 22,178 17.7 19 20.5 22.2 24.2 26.6 29.5 33.2 38 44.3 53.2 66.5 88.6 133 265.9
7,000 23,884 19.1 20.5 22 23.9 26 28.6 31.8 35.8 40.9 47.7 57.3 71.6 95.5 143.2 286.4
7,500 25,590 20.5 21.9 23.6 25.6 27.9 30.7 34.1 38.4 43.8 51.1 61.4 76.7 102.3 153.4 306.8
8,000 27,296 21.8 23.4 25.2 27.3 29.8 32.7 36.4 40.9 46.8 54.5 65.5 81.8 109.1 163.6 327.3
8,500 29,002 23.2 24.8 26.7 29 31.6 34.8 38.6 43.5 49.7 58 69.5 86.9 115.9 173.9 347.7
9,000 30,708 24.5 26.3 28.3 30.7 33.5 36.8 40.9 46 52.6 61.4 73.6 92.1 122.7 184.1 368.2
9,500 32,414 25.9 27.8 29.9 32.4 35.3 38.9 43.2 48.6 55.5 64.8 77.7 97.2 129.6 194.3 388.7
10,000 34,120 27.3 29.2 31.5 34.1 37.2 40.9 45.5 51.1 58.4 68.2 81.8 102.3 136.4 204.6 409.1
10,500 35,826 28.6 30.7 33 35.8 39.1 43 47.7 53.7 61.4 71.6 85.9 107.4 143.2 214.8 429.6
11,000 37,532 30 32.1 34.6 37.5 40.9 45 50 56.3 64.3 75 90 112.5 150 225 450
11,500 39,238 31.4 33.6 36.2 39.2 42.8 47 52.3 58.8 67.2 78.4 94.1 117.6 156.8 235.2 470.5
12,000 40,944 32.7 35.1 37.8 40.9 44.6 49.1 54.5 61.4 70.1 81.8 98.2 122.7 163.6 245.5 490.9
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  • 1.5" Male NPT inlet and outlet water connections
  • Heating elements wired for simultaneous operation
  • Off-peak wiring for load management savings
  • Alternate voltages available
  • 4" hand hole cleanout 
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Commercial Light Duty Specific Questions

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.
It depends.  The Uniform Plumbing Code (UPC), section 510.5 states In seismic zones 3 and 4 water heaters shall be anchored or strapped to resist horizontal displacement due to earthquake motion. Strapping shall be at points within the upper one-third (1/3) and lower one-third (1/3) of its vertical dimensions. At the lower point a minimum of four (4) inches (102mm) shall be maintained above the controls with the strapping."  If the installed location is in these seismic zones then a strap/restraint system is required.  Otherwise please consult with a plumbing engineer to determine the proper installation method for your water heater.
Yes, Vaughn advises that a drip pan with a proper drainage connection be installed under your water heater.   In some locations drip pans are required by code and in other situations they are highly recommended, but not required.  In either case, if a water heater leak or a dripping relief valve could result in property damage then a drip pan must be installed under the water heater, even when not required by code.
Vaughn uses a blown-in polyurethane foam insulation for all cement lined water heaters and tanks up to 120 gallon capacity. This insulation has an R value of 7.2 per inch. Most Vaughn tanks have a minimum of 2 inches of insulation resulting in an R value of 14. Certain models are available either standard or as an option with 3 inch insulation and therefore have an R value of 21.
The water heater must be stored in the orientation of intended use (vertical, horizontal). The recommended ambient air temperature range is between 50 and 105 degree F and not exceeding 65% Rh. Under no conditions should the unit be subject to freezing temperatures. The unit is intended to be stored indoors, protected from the elements. Desiccant material should be inserted into the electric control panel and heating element terminal house (if applicable). Prolonged storage will require periodic inspection of desiccant. For cement lined tanks only, place approximately 10 gallons of water in the tank before closing and sealing all openings to ensure a humid atmosphere for the lining is maintained. Cap and seal all openings and tank tappings and/or flanges. Provide the necessary protection to ensure the tank and all accessories are protected from physical contact that could result in damage. Shrink wrapping or other suitable protective plastic may be applied to the exterior. Start up and installation guidelines must be followed, with particular attention to testing of the electric heating element.
The HydraStone 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. HydraStone 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.
Although we don’t advocate dropping our tanks, sometimes stuff happens. The Vaughn HydraStone lining is a minimum of 1/2" thick (100 times thicker than a glass lined tank) and is guaranteed to uniformly cover 100% of all internal tank surfaces. In essence, the Vaughn HydraStone lining is a tank within a tank and should have no problem withstanding the rigors of shipping and installation. A properly maintained Vaughn tank will last decades.
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.
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