EcoSmart ECO 27 Electric Tankless Water Heater

1. Introduction

The EcoSmart ECO 27 is an advanced electric tankless water heater designed to provide on-demand hot water for residential applications. This unit is particularly well-suited for cold climates or homes with high hot water demands, capable of heating water even when incoming temperatures are as low as 37°F. Its self-modulating technology adjusts energy consumption based on hot water demand, ensuring efficient operation. This manual provides essential information for the safe installation, operation, and maintenance of your EcoSmart ECO 27 water heater.

Figure 1.1: Front view of the EcoSmart ECO 27 Tankless Water Heater, showing the digital display and control knob.

2. Safety Information

Please read all safety instructions carefully before installation and operation. Failure to follow these instructions could result in property damage, serious injury, or death.

• Professional Installation: Installation of this water heater requires significant electrical and plumbing expertise. It is strongly recommended that installation be performed by a qualified, licensed electrician and plumber to ensure compliance with all local codes and safety standards.
• Electrical Requirements: This unit requires specific electrical wiring and breaker configurations. Incorrect electrical setup can lead to fire hazards or electrical shock.
• Water Temperature: Hot water can cause severe burns. Exercise caution when setting and using hot water.
• Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

3. Product Overview

The EcoSmart ECO 27 is a compact and efficient tankless water heater designed for whole-home hot water supply. It features a digital temperature display and self-modulating technology for precise control and energy savings.

Figure 3.1: Internal view of the EcoSmart ECO 27, showing heating elements and copper heat exchanger.

Key Features:

• Digital temperature display for precise control.
• Self-modulating flow sensor technology for energy efficiency.
• Three 9 KW Emerson electric heating elements.
• Copper heat exchanger for durability.
• Automatic resettable thermostat.
• Compact design for space-saving installation.

4. Specifications

Figure 4.1: Dimensions of the EcoSmart ECO 27 Tankless Water Heater.

5. Installation

Proper installation is crucial for the safe and efficient operation of your tankless water heater. It is highly recommended that a licensed professional perform the installation.

5.1 Electrical Requirements

The EcoSmart ECO 27 requires substantial electrical capacity. Ensure your electrical panel can support the following:

• Voltage: 240 Volts
• Amperage Draw: 112A - 113A Max Draw
• Breakers: Three (3) 40 Amp Double Pole Breakers are required.
• Wire: Three (3) sets of 8 AWG wire are required.
• Service: A 200 Amp household service is recommended.

Figure 5.1: Electrical wiring diagram and breaker requirements for the EcoSmart ECO 27.

5.2 Plumbing Considerations

The unit uses 3/4'' NPT pipe fittings. Ensure proper water supply and drainage connections are made according to local plumbing codes.

5.3 Location and Mounting

Mount the unit vertically on a wall in a location protected from freezing temperatures and direct sunlight. Ensure adequate clearance for maintenance and air circulation.

Figure 5.2: Example of whole-house hot water supply using the EcoSmart ECO 27.

6. Operation

The EcoSmart ECO 27 is designed for user-friendly operation with its digital temperature control.

6.1 Temperature Control

The unit features a digital temperature display showing the outlet water temperature setting. You can adjust the temperature in increments of 1 degree using the control knob. The temperature range is typically 80°F to 140°F (26°C to 60°C).

6.2 Flow Rate and Application

The ECO 27 can provide between 2.7 and 6.5 gallons-per-minute (GPM) depending on the inlet water temperature. The self-modulating technology ensures consistent hot water by regulating energy based on flow.

Figure 6.1: Sizing chart and application key to determine unit capacity based on inlet water temperature and desired flow rates.

Refer to the sizing chart (Figure 6.1) to match your location's typical inlet water temperature with the unit's capacity and determine how many fixtures can be supported simultaneously.

7. Maintenance

Regular maintenance helps ensure the longevity and efficiency of your EcoSmart ECO 27 water heater.

7.1 Descaling

Over time, mineral deposits (scale) can build up inside the unit, especially in areas with hard water. It is recommended to descale the unit periodically (e.g., annually) to maintain optimal performance. This process typically involves circulating a vinegar solution through the unit. Consult the full user manual for detailed descaling instructions.

7.2 General Care

• Keep the exterior of the unit clean and free from dust.
• Ensure proper ventilation around the unit.
• Regularly check for any leaks or unusual noises.

8. Troubleshooting

If you experience issues with your EcoSmart ECO 27, consider the following general troubleshooting steps. For detailed error codes and solutions, refer to the official EcoSmart website or the comprehensive user manual.

• No Hot Water: Check if the circuit breakers are tripped. Ensure the water supply is on. Verify the temperature setting on the unit.
• Insufficient Hot Water: This may indicate a flow rate exceeding the unit's capacity for your inlet water temperature. Reduce the flow at the faucet or consider the sizing chart. Mineral buildup may also reduce efficiency, requiring descaling.
• Error Codes: The digital display may show error codes. Consult the full user manual or EcoSmart's online resources for specific code meanings and corrective actions.

9. Warranty and Support

9.1 Warranty Information

The EcoSmart ECO 27 comes with a Limited Lifetime Warranty on electronics, exchanger, and elements. This warranty covers the cost of the heater itself but does not cover labor or any incidental damages. Proper and timely registration of your product is required to validate the warranty; otherwise, the warranty may be void.

9.2 Additional Resources

For further assistance, detailed installation guides, or troubleshooting, please refer to the official EcoSmart resources:

• Installation Manual (PDF): Download Here
• User Guide (PDF): Download Here
• User Manual (PDF): Download Here
• Visit the EcoSmart Store: EcoSmart Amazon Store