AVERA CM10NAT Natural Gas Modulating Instant Water Heater User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, installation, and maintenance of your AVERA CM10NAT Natural Gas Modulating Instant Water Heater. Please read this manual thoroughly before installation and use, and keep it for future reference.

The AVERA CM10NAT is a modulating instant water heater designed for natural gas systems. It delivers continuous hot water with high efficiency and advanced safety features. With a capacity of 10 liters per minute, it can supply up to two simultaneous services without temperature fluctuations. Its modulating technology automatically adjusts the water temperature between 35-65 °C, eliminating the need to mix cold water. The unit features a digital panel and LED screen for easy and precise temperature control. Progressive ignition and forced draft ensure efficient operation and gas savings. It is designed to operate with low water pressure (0.080 MPa), making it compatible with various plumbing systems.

Key Features:

• Instantaneous hot water delivery for up to 2 services.
• Modulating temperature control (35-65 °C) for consistent output.
• Digital panel and LED display for intuitive operation.
• Efficient progressive ignition and forced draft system.
• Low water pressure activation (0.080 MPa).
• Multiple safety features including temperature sensor, double gas valve, and flame protection.
• Compact and slim design for indoor installation.

2. Safety Information

Always adhere to local codes and regulations for gas and water heater installation. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

• Professional Installation: Installation and service must be performed by a qualified installer, service agency, or gas supplier.
• Gas Type: This model (CM10NAT) is designed exclusively for Natural Gas. Do not attempt to use it with LP gas.
• Ventilation: Ensure adequate ventilation as specified in the installation guidelines.
• Water Pressure: While designed for low pressure, ensure your plumbing system can handle the required flow.
• Leak Detection: Regularly check for gas and water leaks.
• Overheating Protection: The unit is equipped with overheating protection. Do not bypass or tamper with safety devices.
• Flame Protection: The anti-flame protection system will cut off gas supply if the flame extinguishes unexpectedly.
• Freezing Protection: Take necessary precautions to prevent freezing in cold environments, as freezing can damage the unit.

Image: The AVERA CM10NAT water heater features protection against gas leaks, overheating, and freezing, ensuring safe operation.

3. Product Overview and Components

Familiarize yourself with the main components and dimensions of your AVERA CM10NAT water heater.

Image: Front view of the AVERA CM10NAT water heater, highlighting its dimensions: 56 cm (height), 35 cm (width), 14.5 cm (depth), and a weight of 8.5 kg. This model is exclusively for Natural Gas.

Image: Detailed view of the AVERA CM10NAT control panel and connections. It shows the LED display indicating temperature, buttons for adjusting temperature (35 to 65°C), an On/Off switch, a 1/2" hot water outlet, a 1/2" cold water inlet, a 1/2" gas connection, and a 127V electrical power cord.

Main Components:

• LED Display: Shows current water temperature and error codes.
• Temperature Adjustment Buttons: Used to set desired water temperature (35-65 °C).
• On/Off Switch: Powers the unit on or off.
• Hot Water Outlet: 1/2 inch connection for hot water supply.
• Cold Water Inlet: 1/2 inch connection for cold water supply.
• Gas Connection: 1/2 inch connection for natural gas supply.
• Electrical Power Cord: 127V power supply.

4. Installation Guidelines

Proper installation is crucial for the safe and efficient operation of your water heater. It is highly recommended that installation be performed by a certified professional.

4.1 Choosing the Right Location

• The unit is designed for indoor installation in a well-ventilated area.
• It can also be installed in a covered outdoor area, protected from direct weather exposure.
• Ensure the location allows for easy access for maintenance and service.
• Avoid areas prone to freezing temperatures.

Image: Examples of suitable installation locations: a ventilated interior space with a flue, and a covered exterior space, both for Natural Gas models.

4.2 Gas Type Identification

This model (CM10NAT) is specifically for Natural Gas. Ensure your home's gas service matches this requirement.

Image: Diagram showing the difference between LP Gas (stored in tanks) and Natural Gas (supplied via underground pipelines). Confirm your gas type before installation.

4.3 Plumbing and Gas Connections

• Maintain a minimum distance of 2 meters between the showerhead and the water tank/supply.
• Maintain a maximum distance of 5 meters between the showerhead and the water heater.
• Ensure all connections are sealed properly to prevent leaks.
• If water pressure is consistently low, consider installing a water pressure booster (e.g., AVERA PR26L) for optimal performance.

Image: Installation diagram illustrating recommended distances: a minimum of 2 meters between the water supply tank and the shower, and a maximum of 5 meters between the shower and the water heater. It also suggests considering a pressure booster for low water pressure.

5. Operating Instructions

Operating your AVERA CM10NAT water heater is straightforward with its digital controls.

5.1 Initial Startup

1. Ensure all gas and water connections are secure and leak-free.
2. Open the main gas supply valve.
3. Open a hot water faucet to allow water to flow through the unit, purging any air from the system.
4. Plug the power cord into a 127V electrical outlet.
5. Press the On/Off switch on the control panel to power on the unit.
6. The LED display will illuminate, showing the current water temperature.

5.2 Adjusting Water Temperature

• Use the temperature adjustment buttons (+ and -) on the digital panel to set your desired water temperature.
• The temperature can be set between 35°C and 65°C.
• The modulating function will automatically adjust the gas flow to maintain the set temperature, providing a consistent hot water supply.

Image: The AVERA CM10NAT water heater demonstrating its modulating function, allowing programmable water temperatures from 35°C to 65°C for comfortable bathing.

5.3 Normal Operation

When a hot water faucet is opened, the unit will automatically ignite and begin heating water to the set temperature. When the faucet is closed, the unit will turn off.

6. Maintenance

Regular maintenance ensures the longevity and efficient performance of your water heater.

• Annual Inspection: It is recommended to have the unit inspected by a qualified technician annually.
• Cleaning: Keep the exterior of the unit clean. Do not use abrasive cleaners.
• Ventilation: Ensure the ventilation system is clear of obstructions.
• Water Filter (if applicable): Check and clean any inline water filters to prevent sediment buildup.
• Descaling: In areas with hard water, periodic descaling may be necessary to remove mineral buildup. Consult a professional for this procedure.
• Leak Checks: Periodically check all gas and water connections for any signs of leaks.

7. Troubleshooting

The LED display can show error codes to help diagnose issues. Refer to the full manual for a complete list of error codes and their solutions. Below are some common issues and basic troubleshooting steps.

8. Specifications

Detailed technical specifications for the AVERA CM10NAT water heater.

Image: Overview of the AVERA CM10NAT water heater's main features, including its 10 L/min capacity, suitability for 2 services, digital panel, 127V automatic ignition, and up to 80% gas savings.

Image: A comparison table of AVERA water heater models, including CM10 (10 L/min, LP Gas, 2 services), CM10NAT (10 L/min, Natural Gas, 2 services), CM14 (14 L/min, LP Gas, 2.5 services), and CM24 (24 L/min, LP Gas, 4 services).

9. Warranty and Support

The product description mentions a 2-year warranty. For detailed warranty terms and conditions, please refer to the official warranty document included with your purchase or visit the AVERA official website.

For technical support, service, or to report any issues, please contact AVERA customer service through their official channels.

10. Product Videos

Watch these official videos for additional information and visual guidance on your AVERA water heater.