Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Eemax SPEX3208 FlowCo Electric Point of Use Water Heater. Please read all instructions carefully before installation and use. Retain this manual for future reference.
The Eemax SPEX3208 FlowCo is a non-thermostatic electric water heater designed to deliver hot water on demand for single, sensor, or metering faucets in fixed-flow applications. Its compact size and on-demand activation make it suitable for various point-of-use needs.

Figure 1: Front view of the Eemax SPEX3208 FlowCo Electric Point of Use Water Heater. This image displays the compact white casing with the Eemax FlowCo logo prominently displayed on the front.
Key Features:
- Temperature output based on flow rate.
- SafeStart technology for reliable operation.
- Flexible mounting system allows installation in any orientation.
- Self-diagnostics and intelligent controls for efficient performance.
- Activates only on-demand, ensuring energy efficiency.
- Compact size for discreet installation.
Setup and Installation
Important: Installation of this appliance must be performed by a qualified and licensed plumber and electrician in accordance with all national, state, and local plumbing and electrical codes.
1. Site Selection:
- Choose a location as close as possible to the point of use to minimize heat loss.
- Ensure the location is protected from freezing temperatures.
- Verify adequate space for maintenance and service access.
2. Mounting:
The unit features a flexible mounting system, allowing it to be installed in any orientation (vertical or horizontal), provided plumbing and electrical connections are accessible and properly secured.
3. Plumbing Connections:
- Connect the cold water supply to the inlet and the hot water outlet to the fixture.
- Ensure all connections are watertight.
- Flush the system thoroughly to remove any air or debris before electrical connection.
4. Electrical Connections:
- This unit requires 208 Volts and 3 Kilowatts. Ensure the electrical supply meets these requirements.
- Connect the unit to a dedicated circuit breaker as per local electrical codes.
- Verify proper grounding.

Figure 2: Internal view of the Eemax SPEX3208 FlowCo water heater. This image shows the internal heating elements, wiring, and control board, illustrating the complexity of the electrical and plumbing connections.
Operating Instructions
Initial Startup:
- Ensure all plumbing connections are secure and leak-free.
- Open the hot water faucet at the point of use to allow water to flow through the heater and purge any air from the system.
- Once water flows steadily, close the faucet.
- Turn on the electrical power to the unit at the circuit breaker.
- Open the hot water faucet again. The unit will activate automatically to provide hot water.
Normal Operation:
- The Eemax SPEX3208 operates on demand, heating water only when a hot water faucet is opened.
- The temperature output is directly influenced by the flow rate of water through the unit. Lower flow rates generally result in higher output temperatures, while higher flow rates result in lower output temperatures.
- The SafeStart technology ensures a smooth and safe startup sequence.

Figure 3: Example installation of Eemax FlowCo water heaters in a commercial restroom. This image demonstrates how multiple units can be discreetly installed under sinks to provide hot water to individual faucets.
Maintenance
Regular maintenance ensures the longevity and efficient operation of your water heater. Always disconnect power to the unit before performing any maintenance.
General Care:
- Keep the exterior of the unit clean with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Periodically inspect plumbing connections for leaks. Tighten if necessary.
Descaling:
In areas with hard water, mineral deposits (scale) can accumulate within the heating elements, reducing efficiency. It is recommended to descale the unit annually or as needed. This procedure should be performed by a qualified professional.
- Disconnect power and water supply.
- Drain the unit.
- Introduce a suitable descaling solution into the heating chamber.
- Allow the solution to work for the recommended time, then flush thoroughly.
- Reconnect plumbing and electrical, then purge air from the system.
Troubleshooting
The Eemax SPEX3208 features self-diagnostics and intelligent controls to help identify potential issues. If you experience problems, consult the following table before contacting customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Unit not activating |
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| Water not hot enough |
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| Water leaks |
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If the problem persists after attempting these solutions, please contact Eemax customer support or a qualified service technician.
Specifications
| Specification | Value |
|---|---|
| Brand | Eemax |
| Model Number | SPEX3208 |
| Color | White |
| Wattage | 3 Kilowatts (3E+3) |
| Voltage | 208 Volts |
| Maximum Flow Rate | 0.25 Gallons Per Minute |
| Heat Output | 3 Kilowatts |
| Efficiency | 0.75 to 0.95 |
| Mounting Type | Flexible mounting system |
| Product Dimensions (L x W x H) | 3 x 5 x 9.75 inches |
| Item Weight | 3.1 pounds |
| UPC | 091654924958 |
| Included Components | Tankless electric water heater |

Figure 4: U.S. Government EnergyGuide label for the Eemax SPEX3208. This label provides estimated yearly energy cost ($73) and maximum gallons per minute of hot water (0.3 GPM), indicating its energy efficiency and capacity.
Warranty Information
The Eemax SPEX3208 FlowCo Electric Point of Use Water Heater comes with the following warranty:
- Parts: 1 year limited warranty.
- Leaks: 6 year limited warranty.
For full warranty terms and conditions, please refer to the documentation included with your product or visit the official Eemax website.
Customer Support
If you have any questions, require technical assistance, or need to report a warranty claim, please contact Eemax customer support.
- For more information, visit the Eemax Store on Amazon.
- Refer to the official Eemax website for direct contact information.





