- Backup Element – A single backup heating element provides heat only when solar energy does not satisfy demand.
- Total Performance System – Sediment reducing device that also increases first hour delivery of hot water while minimizing temperature build-up in tank.
- Ultonium® Lining with Microban® – An exclusively engineered enamel formula that provides superior tank protection from the corrosive effects of water. This formula (Ultonium®) is fused to the steel surface by firing at a temperature of over 1600°F (871°C). Microban® antimicrobial product protection helps prevent the growth of bacteria, mold and mildew on the surface of the tank lining.
- Fully Automatic Controls – Fast acting surface-mount thermostat for automatic temperature control. Factory installed sensitive manual reset energy cutoff for safety to prevent overheating.
- Supply and Return Connections – 3⁄4″ NPT female connections are located on the top for both the solar collector supply and return.
- Alternate Solar Collector Supply and Return Connections – Located on the front for additional application flexibility (MS80 and MS120 only).
- Insulation System – 2″ (51mm) Non-CFC foam insulation covers the sides and top of the tank, reducing heat loss. This results in less energy consumption, improved efficiencies, and jacket rigidity.
- Water Connections – 3⁄4″ (19mm) NPT factory-installed true dielectric fittings extend water heater life and simplify water line connections.
- Sensor Wires for Solar Thermistor Connections – Twisted wires are provided as a means for connecting thermistors to a solar controller (thermistors and solar controller are not provided).
- Protective Anode Rod – Provides added protection against corrosion for long-term, trouble-free service.
- Direct Heat Transfer With Immersed Element – Transfers heat directly and efficiently to the water. Screw-in style.
- T&P Relief Valve – Included.
- Low Restrictive Brass Drain Valve Durable tamper proof design.
Solar Saver® Electric Backup Water Heaters
Standard features:


Model_Number | Capacity | A. Ht. Floor to Heater Top |
B. Jacket Dia. |
C. Ht. Floor to Water Conn. |
D. Ht. Floor To T&P Conn. |
E. Ht. Floor To ALT. Collector Return Conn. |
F. Ht. Floor To ALT. Collector Supply Conn. |
---|---|---|---|---|---|---|---|
U.S.Gal. | in. | in. | in. | in. | in. | in. | |
NMS65R6SS | 65 | 59 | 22 | 60 | 52 1⁄2 | – | – |
NMS80R6SS† | 80 | 59 | 24 | 60 | 52 1⁄2 | 38 | 7 7⁄8 |
NMS120R6SS† | 119 | 62 1⁄2 | 28 | 63 1⁄2 | 56 | 38 1⁄4 | 7 7⁄8 |
† Models offer additional solar collector return connections