Stiebel Eltron Engineering Specification Sheet
CES Plus Series: CES 81 kW, CES 90 kW, CES 108 kW | NEMA 3, NEMA 4/4X
Specifications
| Model | CES Plus 81 kW, CES Plus 90 kW, CES Plus 108 kW |
| Phase | 3-phase |
| Inlet/outlet pipe connection | 1" female NPT |
| Heat exchanger material | 316L stainless steel |
| Enclosure rating | NEMA 3 standard, NEMA 4/4X available |
| Operating pressure range | 4-150 psi (0.27-10.3 bar) |
| Maximum temperature output | 90°F (32°C) |
| Temperature adjustment range | 60-90°F (16-32 °C) |
| Temperature adjustment increment | 1°F (1°C) |
| Number of heating elements | 18 |
| Minimum activation flow | 3.75 gpm (14.2 l/m) |
| Maximum flow at 60 psi | 40 gpm (151.4 l/m) |
Performance Data
| Model | Part Number | Voltage | Phase | kW | Amps | 3P Breaker Size (A) | Temperature Rise °F (gpm = kW x 6.83 / Δt) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 gpm | 10 gpm | 15 gpm | 20 gpm | 40 gpm | |||||||
| CES Plus 81 kW | CESPLUS-81-480 | 480 | 3-phase delta | 81.07 | 97.52 | 110 | >100 | 55 | 28 | 18 | 14 |
| CES Plus 90 kW | CESPLUS-090-480 | 480 | 3-phase delta | 90.00 | 108.25 | 125 | >100 | 62 | 31 | 21 | 15 |
| CES Plus 108 kW | CESPLUS-108-480 | 480 | 3-phase delta | 108.0 | 129.9 | 150 | >100 | 74 | 49 | 37 | 18 |
| CESPLUS-108-575 | 575 | 3-phase delta | 108.2 | 108.6 | 125 | >100 | 74 | 49 | 37 | 18.5 | |
Certifications and Warranty
Certifications: The ETL Listed mark indicates that the product has been tested by Intertek and meets applicable standards, including ANSI/UL Std. 499 and CAN/CSA Std. C22.2 No.88.
Origin: Made in the USA.
Warranty: The product comes with a 6-year warranty against leakage and a 2-year warranty against defects in workmanship and materials.
Graphical Representation of Performance
The graph illustrates the relationship between water flow rate (in gallons per minute, gpm) and the resulting temperature rise (in degrees Fahrenheit, °F) for the CES Plus series models. It shows three distinct curves representing the CES 81 kW, CES 90 kW, and CES 108 kW units, indicating how quickly each model can heat water at different flow rates. The Y-axis represents Temperature Rise (°F) from 0 to 100, and the X-axis represents Flow Rate (gpm) from 0 to 40.
Dimensions
The diagrams provide front and side views of the CES Plus unit, detailing its physical dimensions. Key dimensions include width, height, and depth, along with the placement and size of inlet/outlet pipe connections and mounting points. Specific measurements are provided in inches, such as approximately 24-29/32" width, 37-5/16" height, and 24" depth for the main unit body. The side view indicates a depth of 14" and specific mounting hole dimensions.
