Westinghouse APOLO Performance Tankless Water Heater User Manual

Introduction

This user manual provides comprehensive instructions for the safe and efficient operation, installation, and maintenance of your Westinghouse APOLO Performance Tankless Water Heater, Model HS120A1G-NG. This unit is designed for outdoor installation and uses natural gas to provide on-demand hot water for residential or commercial applications.

Figure 1: Westinghouse APOLO Performance Tankless Water Heater and its remote control panel.

Important Safety Information

Read all instructions thoroughly before installation and operation. Failure to follow these instructions could result in property damage, personal injury, or death.

• This appliance must be installed by a qualified professional in accordance with all local codes and regulations.
• Ensure the unit is connected to a 120V AC power source as specified.
• The unit is CSA-certified, ensuring compliance with North American safety standards.
• The water heater incorporates multiple safety features, including IPX4 waterproof rating, dry-burning prevention, overheat protection, anti-freeze protection, time-out shutdown, and accidental flameout protection.

Figure 2: The Westinghouse tankless water heater is CSA certified, indicating adherence to safety and performance standards.

Setup and Installation

This tankless water heater is designed exclusively for outdoor installation. Proper installation is critical for safety and optimal performance.

Location Requirements

• Install the unit outdoors only, in a location protected from direct impact and accessible for service.
• Ensure adequate clearance around the unit for ventilation and maintenance.
• The unit features a robust design for stable operation in extreme weather, including windproof, rainproof, and anti-freeze capabilities.

Figure 3: The tankless water heater installed on an exterior wall, demonstrating its outdoor design.

Plumbing and Electrical Connections

• The unit utilizes standard 3/4" NPT connections for water inlet, water outlet, and gas inlet.
• Connect the unit to a dedicated 120V AC, 60 Hz power source.
• Professional installation is highly recommended to ensure proper and safe connections.

Figure 4: Detailed diagram illustrating the required plumbing and electrical connections for the water heater.

Operating Instructions

The Westinghouse APOLO Performance water heater provides on-demand hot water, activating only when needed to conserve energy. It features a remote control panel for convenient temperature management.

Remote Control Panel

• The indoor remote control panel allows for effortless adjustment of the water temperature.
• The LED display on the panel shows the current temperature, working status, and any error codes.
• The advanced water flow servo system maintains water temperature within ±1°F, preventing sudden temperature fluctuations during use.

Figure 5: The smart controller for precise temperature adjustment and monitoring.

Hot Water Delivery

• With a 120,000 BTU heat output and up to 5.1 GPM (Gallons Per Minute) flow rate, the unit can supply hot water to 2-4 fixtures simultaneously.
• The unit features oxygen-free copper heat exchangers for better thermal conductivity and faster hot water delivery.
• Smart staged-combustion technology with sectional burners automatically adjusts the flame for consistent temperature across different seasons.

Figure 6: Comparison illustrating the stable temperature output of the Westinghouse unit.

Maintenance

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

• Freeze Protection: The unit is equipped with an automatic freeze protection system. However, in temperatures below 5°F (-15°C) or during extended periods of non-use, it is recommended to fully drain the system to prevent potential damage from freezing.
• General Cleaning: Keep the exterior of the unit clean and free from obstructions. Do not block the air intake or exhaust vents.
• Professional Inspection: Annual inspection by a qualified technician is recommended to check for scale buildup, gas line integrity, and overall system performance.

Figure 7: The unit is designed for stable operation in various weather conditions, including cold temperatures.

Troubleshooting

This section provides guidance for common issues. For complex problems, contact a qualified service technician.

For a complete list of error codes and detailed troubleshooting steps, refer to the full User Manual PDF linked in the Support section.

Specifications

Figure 8: Physical dimensions and a summary of key technical specifications.

Figure 9: Ground water temperature map and corresponding performance data for the 120,000 BTU model.

Warranty and Support

Westinghouse provides comprehensive warranty coverage for your tankless water heater:

• Full Unit Warranty: 2 years
• Heat Exchanger Warranty: 5 years

For detailed warranty terms and conditions, please refer to the warranty documentation included with your product or visit the official Westinghouse website.

Additional Resources

• Installation Manual (PDF)
• Instructions for Use (IFU) (PDF)
• User Manual (PDF)

For technical support or service inquiries, please contact Westinghouse customer service.