


High Performance and High Efficiency
The Vaughn LDC Series water heaters incorporate a number of features not found in other conventional heaters which makes it better suited to resist the highly corrosive effects of hot water. The heart of a Vaughn water heater is a superior storage vessel which utilizes a specially formulated Hydrastone cement 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.


Heavy Duty Construction
- 1/2" seamless Hydrastone cement lining provides long tanks life
- Copper-silicon tappings cannot rust or corrode
- High impact composite jacket eliminates damage during installation and transit. Will not rust or corrode.
High Efficiency
- 2 inches of premium spray-in polyurethane foam insulation provide the industry's lowest standby heat loss
- 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 Information
- 5 year limited tank warranty
Model LDC Water Heater Specifications
3/4" Female NPT
Model S: 2" Polyurethane Foam
Model ME: 3" Polyurethane Foam
Standard: 5 Year Non Pro-Rated
Optional: 10 Year Non Pro-Rated
Standard Equipment
- 1/2" thick Hydrastone cement 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" thick polyurethane foam insulation
- High impact non-corroding colorized composite protective jacket
- Cold water inlet diffuser with drain valve

1 Φ Wattage and Dimensional Data
Storage Capacity (Gallons) |
Base Model Number |
Standard Configurations |
Alternate Configurations | Dimensions (Inches) |
Shipping Weight (lbs.) |
||||||
KW |
Voltages 1Φ |
Model S Overall Diameter |
Model ME Overall Diameter |
Overall Height |
Floor to Inlet "A" |
Floor to T&P "B" |
|||||
KW |
Volts 1Φ |
Surface Thermostat |
|||||||||
6 | S6 | 1.5 | 120, 240 | 1.5, 2, 3, 4, 4.5, 5, 6 | 120 208 240 277 480 600 |
15 | N/A | 17.5 | 5 | 12.5 | 105 |
10 | S10 | 1.5 | 120, 240 | 20 | 22.75 | 21 | 7 | 15 | 120 | ||
20 | S20 | 1.5 | 120, 240 | 20 | 22.75 | 33 | 7 | 27 | 175 | ||
30 | S30 | 4.5 | 240 | 20 | 22.75 | 41.5 | 7 | 34 | 225 | ||
40 | S40 | 4.5 | 240 | 20 | 22.75 | 58.75 | 7 | 51 | 250 | ||
50 | S50 | 4.5 | 240 | 22.75 | 25 | 51.5 | 7 | 43 | 300 | ||
65 | S65 | 4.5 | 240 | 26 | 28 | 48 | 8 | 40 | 310 | ||
80 | S80 | 4.5 | 240 | 26 | 28 | 58 | 8 | 51 | 375 | ||
100 | S100 | 4.5 | 240 | 26 | 28 | 69.5 | 8 | 61 | 435 | ||
120 | S120 | 4.5 | 240 | 28 | 30 | 69.25 | 8 | 61 | 450 | ||
30 | S30U | 4.5 | 240 | 25 | 22.75 | 33.25 | 7 | 24 | 250 | ||
40 | S40U | 4.5 | 240 | 26 | 28 | 33.25 | 7 | 24 | 275 |
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.
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 |
7200 | 22.6 | 24.5 | 26.8 | 29.5 | 36.9 | 49.1 | 73.8 | 147.6 |
9000 | 28.3 | 30.7 | 37.2 | 41.0 | 51.2 | 68.3 | 102.5 | 205.0 |
10000 | 31.5 | 34.1 | 37.2 | 41.0 | 51.2 | 68.3 | 102.5 | 205.0 |
12000 | 37.8 | 41.0 | 44.7 | 49.2 | 61.5 | 82.0 | 123.0 | 246.0 |
Downloads
Technical Documents
- Commercial Light Duty Series Brochure PDF (1.6 MB)
- Commercial Light Duty Specs PDF (311 KB)
- High Limit and Upper Thermostat Combo PDF (357 KB)
- Lower Thermostats PDF (174 KB)
- Heating Element Description PDF (34.4 KB)
- Screw Type Heating Element PDF (67.5 KB)
- Bolt On Type Heating Elements PDF (67.9 KB)
- Tank Assembly LDC Series PDF (194 KB)
- Wiring Diagrams PDF (282 KB)
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