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Seisco Tankless Electric Water Heater. Application: Single Bath. Model RA-16, 240 Volt - Free Shipping in Contiguous US
   Model: RA-16
Seisco Tankless Electric Water Heater. Application: Single Bath. Model RA-16, 240 Volt - Free Shipping in Contiguous US
Base Price:  $569.70
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    SEISCO Tankless
    Electric Water Heater
    Model RA-16
    240 Volt

    The tankless water heater that others can only claim to be!

    After 14 years of research and testing, the SEISCO, whose technology has earned its developer 5 separate U.S. and many additional foreign patents, is recognized as the STANDARD for all tankless water heaters.

    The SEISCO tankless water heater has earned International recognition for providing the highest level of temperature control performance, reliability and safety in its operation over any tankless water heater anywhere in the world today.

    Product Application:
    Two-chamber models designed for point-of-use applications: Single Bath.

    This on-demand tankless water heater is the enabling technology for use as back-up to active renewable energy systems such as solar and geothermal water heating systems. The temperature activated control works effectively in re-circulating systems and in combination with tank-type heaters.

    The RA-16 is excellent for point-of-use applications at single showers and sinks. Ideal for supplementing existing tank-type heaters that are unable to satisfy user requirements in beach houses, hair salons, horse stables, hunting and fishing cabins. Great for small apartment or condominium dwelling, where incoming water temperature rarely drops below 75 degrees F.

    Product Benefits:
    • Continuous and Endless Supply of Hot Water
    • Space Savings
    • Safety and Health Benefits
    • Smart Technology
    • No Maintenance
    • Environmental Benefits

    Product Features:
    • UL 499 Approval Listing for Water Heating Applications
    • Works with tubing and manifold systems
    • No minimum flow activation required
    • Built-in DSM Utility Integration option
    • Compatible with Home Energy Management Systems
    • No moving parts
    • Very small & compact
    • Light weight modular construction
    • No restriction to flow
    • Standard 3/4 inch plumbing connections
    • Microprocessor digital control
    • Power sharing & variable power control technology
    • Continuous venting
    • Heats continuously only when needed, no storage
    • Self-diagnostics
    • Redundant safety devices
    • High performance polymer nylon chamber material
    • Rust & corrosion resistant

    download pdf Seisco Warranty

    • 2 Chambers
    The same advanced microprocessor technology and thermoplastic construction are used in both 2 Chamber and 4 Chamber models, therefore, many of the parts are interchangeable. There are no moving parts or flow restricting devices used in Seisco heaters.

    • Flow/No Flow Detection
    Seisco uses a unique flow/no flow detection system utilizing temperature sensors for flow detection. In standby, the heater maintains a very subtle temperature gradient and flow is detected when there is a change in the gradient.

    • Microprocessor Control
    The advanced microprocessor control turns the power on through a set of relays and turns the power off when flow stops. The most important feature may be the patented "Power Sharing" technology which provides for evenly distributed power to the heating elements. This in turn, helps eliminate scalding potential, scaling and sediment build-up.

    • Control Logic
    The control logic allows the power level to vary which is beneficial in minimizing the use of power for periods of less demanding usage.

    • Quality Construction:
    Seisco heating chambers are modular and molded of light weight thermoplastic materials. The chamber is specifically engineered for durability in harsh water heating environments and capable of withstanding extreme temperature swings and pressure changes. Heating elements, sensors and detection devices that come in contact with the water, are machined in brass or made of copper to help resist corrosion. Standard 1 inch, flanged screw-type heating elements are utilized which are interchangeable with heating elements available at local hardware stores.

    Note: Warranty is for Water Heating Applications only and does not cover use for residential or commercial space heating applications.

    Seisco was designed with a complete array of dependable safety features to prevent harm to the user and the heater. There are several redundant safety features as well. 

    • Dual high temperature switches on independent circuitry in addition to the control's internal high temperature shut down.

    • Dual low level detectors are used to prevent dry firing of the heating elements.

    • Electrical Surge Protection - Although the control board is protected against electrical surges, additional heater protection is achieved when the relays are opened during periods of standby, providing no path for the surge to reach the heating elements.

    • Venting System - The chamber is designed with a patented venting system that continuously vents harmful gasses and air during operation.

    • The microprocessor control is programmed to provide self diagnostics that significantly reduces troubleshooting and service time. In the event of a problem with the heater, the control emits a visual or optional built-in audible code.

    There is no maintenance required of the Seisco. However, there are clean-out plates below the heater chamber to allow removal of sand and grit that may build-up from a well water system.

    Code Approvals-U.L. CSA NSF HUD NEC

    Seisco RA 16 Specifications
    Heat Output (max.) 54606 BTU
    Power Rating (max.) 16kW
    Voltage  Rating (Nominal) 240 VAC
    Current Rating (max): 67 AMPS
    Energy Factor 0.99+
    Heating Elements 8000 watts x2
    Circuits Required Two (2), 2-wire w/ground*
    Breakers Required Two (2), double-pole*
    Breakers Size 30 AMPS each x 2*
    Temp. Output (dial) 90F to 130F (32C - 52C)**
    Flow Ratings

    Rise (Deg C) @ Flw (GPM)

    52° F @ 2.0 GPM
    42° F @ 2.5 GPM
    34° F @ 3.0 GPM
    25° F @ 4.0 GPM

    Rise (Deg C) @ Flw (L/Min.)

    27° C @ 8 L/min
    22° C @ 10 L/min
    18° C @ 12 L/min
    13° C @ 16 L/min
    Weight 15 lbs (7.0 kg)
    Height 15 3/4" (400mm)
    Width 10 1/4" (260 mm)
    Depth 6 1/4" (159mm)
    Fittings 3/4" (200mm)
    Mounting Holes
    "A" Mount 14 1/4" (362 mm)
    "B" Mount 10 7/8" (276 mm)
    * Optional one (1), 75 AMP circuit supply – Check with manufacturer
    • for jumpers that must be installed on control board for this option.
    ** Temp. output dial Factory set to 120F (49C).

    (***) T&P Relief Valve not required by Mfg.

    download pdf RA-16 Specifications

    To see all models, please click here

    Product Manufacturer: Seisco


    HELP » Contact Customer Support
    • Toll-Free help line offering product info and ordering support
    • Online e-mail technical and installation support


    Return Policy
    All Tankless Water Heaters are tested at the factory just prior to shipment. It is the customer's responsibility to determine if sufficient electrical capacity exists to install the water heater prior to placing the order [See Tankless Water Heater Installation Guide]. Unit sizing must be determined by the customer using the temperature rise chart based on the required flow rate.

    A 20% restocking fee will be applied to returns of new units in original packaging (see policy page for instructions). The shipping cost will not be refunded. Once the Tankless Heater has been installed it cannot be returned.

    Processing and Delivery Information: Please allow Processing Time as stated above for your order, plus standard transportation delivery time. Orders placed after 2PM EST may not begin processing until the next business day. Please call for Rush Processing and/or Rush Shipping options.

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