Reliance Water Heater Manual: A Comprehensive Guide
This manual provides essential guidance for Reliance water heater owners, covering installation, operation, maintenance, and warranty details for optimal performance.
Access crucial product literature, including a helpful buyer’s guide and the water heater selector tool, directly from the Reliance Water Heaters website.
Registering your appliance is vital for warranty claims, receiving important updates, and ensuring seamless support throughout the product’s lifespan.
Understanding Your Reliance Water Heater
Your Reliance water heater is a significant investment, designed to provide years of reliable hot water service. Familiarizing yourself with its components and operation is key to maximizing efficiency and longevity. This section aims to provide a foundational understanding of how your unit functions.
Reliance offers a diverse range of water heaters, including traditional tank models, efficient tankless options, and variations with power venting or conventional venting systems. Utilizing the Buyer’s Guide available on the Reliance Water Heaters website (Water Heater Selector Tool) can help pinpoint the specific features of your model.
Proper operation involves understanding the temperature settings, safety features, and routine maintenance requirements. Always refer to the complete product literature found on the official website for detailed instructions. Providing proof of ownership is crucial for warranty validation and receiving important product notices.
Understanding these basics will empower you to operate your Reliance water heater safely and effectively.
Model Number and Serial Number Location
Locating your Reliance water heater’s model and serial numbers is essential for accessing warranty information, ordering replacement parts, and receiving accurate customer support. These numbers uniquely identify your unit and are crucial for any service requests.

Typically, the model and serial number are found on a label affixed to the water heater’s exterior. Consult the product literature available at Reliance Water Heaters’ document library for precise location details specific to your model.
Common locations include the tank’s side, the access panel, or near the gas control valve (for gas models). Carefully inspect these areas. Having this information readily available streamlines any interaction with Reliance customer support and ensures efficient resolution of any issues.
Record these numbers in a safe place for future reference.
Identifying Common Reliance Water Heater Models
Reliance offers a diverse range of water heaters designed to meet various household needs. Understanding the different types will help you navigate maintenance and troubleshooting. The Reliance Water Heaters website provides a “Buyer’s Guide” and selector tool to assist in identifying the right model for your home.
Common types include standard tank-style heaters, available in both gas and electric versions. These are the most prevalent models. Additionally, Reliance manufactures power vent and non-power vent models, differing in their venting requirements. Tankless water heaters, offering on-demand hot water, are also part of the Reliance lineup.
Each model has unique features and specifications. Refer to your unit’s documentation or the online resources for detailed information regarding its specific operation and maintenance needs. Proper identification is key to utilizing the correct procedures.
Power Vent Models
Reliance power vent water heaters utilize a fan to force exhaust gases through the venting system, offering greater flexibility in installation locations compared to traditional models. This eliminates the reliance on natural draft. These units require a dedicated electrical connection to power the vent fan, in addition to the gas or electric supply for heating water.
Proper venting is crucial for safe and efficient operation. Ensure the vent pipe is correctly installed and free of obstructions. Regular inspection of the vent system is recommended to prevent carbon monoxide buildup. Refer to the installation manual for specific venting requirements and safety guidelines.
Maintenance for power vent models includes checking the fan operation and ensuring adequate airflow. Any unusual noises or performance issues should be addressed promptly by a qualified technician.
Non-Power Vent Models
Reliance non-power vent water heaters rely on natural convection to vent exhaust gases, requiring a properly sized and installed chimney or vent pipe. These models are generally simpler in design and do not require an electrical connection for venting purposes, making them suitable for locations without readily available power.
Maintaining a clear and unobstructed vent pathway is paramount for safe operation. Inspect the vent pipe regularly for blockages, corrosion, or damage. Ensure adequate draft is present to effectively remove combustion byproducts. Improper venting can lead to dangerous carbon monoxide buildup.
Annual professional inspection of the venting system is highly recommended. A qualified technician can verify proper draft and identify any potential safety hazards. Always follow local codes and regulations regarding venting requirements for non-power vent appliances.
Tankless Models (If Applicable)
Reliance tankless water heaters provide on-demand hot water, eliminating the standby heat loss associated with traditional tank-style units. These models require a higher initial investment but can offer long-term energy savings and space efficiency. Proper sizing is crucial to ensure sufficient hot water flow for your household’s needs.
Tankless units necessitate adequate gas supply and venting, often requiring larger gas lines and dedicated venting systems. Regular descaling is essential to prevent mineral buildup and maintain optimal performance. Follow the manufacturer’s recommended descaling schedule based on water hardness.
Professional installation is strongly advised for tankless water heaters due to the complexity of the gas, venting, and electrical connections. Ensure the unit is properly grounded and that all safety features are functioning correctly; Refer to the specific model’s manual for detailed instructions.

Installation and Setup
Proper installation is paramount for safe and efficient operation; always adhere to local codes and manufacturer guidelines for gas, electrical, and venting connections.
Proper Installation Procedures
Ensuring a correct installation is critical for the longevity and safe operation of your Reliance water heater. Begin by carefully reviewing all included documentation and local plumbing and gas codes before commencing any work. The chosen location must provide adequate clearance for servicing and adhere to minimum spacing requirements from combustible materials.
Prior to connecting any utilities, inspect the unit for shipping damage. Verify that the water heater is level and stable on a structurally sound surface. Proper venting is essential, especially for non-power vent models, to prevent carbon monoxide buildup. Follow the manufacturer’s instructions precisely regarding vent pipe diameter, length, and slope.
Always use approved fittings and sealant when making connections. Double-check all connections for leaks after installation is complete. Reliance recommends professional installation to guarantee compliance with safety standards and warranty requirements. Utilizing a qualified technician minimizes risks and maximizes performance.
Gas Connection and Safety Checks

Connecting the gas supply requires utmost care and adherence to safety protocols. Before any connection, ensure the gas supply valve is completely shut off. Use a new, approved gas connector and apply pipe joint compound specifically designed for gas lines to all threaded connections. Never use tape instead of pipe joint compound.
After connecting the gas line, perform a thorough leak test using a soap and water solution. Apply the solution to all joints and connections; bubbles indicate a leak. If a leak is detected, immediately shut off the gas supply and tighten the connection or replace the fitting as needed.
Crucially, verify the gas type (natural gas or propane) matches the water heater’s rating. Following connection, purge the gas line to remove any air before attempting to light the pilot light. Regular safety checks, including leak inspections, are vital for preventing hazardous situations.
Electrical Connection and Grounding
Proper electrical connection and grounding are paramount for safety and optimal performance. Before commencing any electrical work, disconnect the power supply at the circuit breaker or fuse box. Ensure the voltage and frequency match the water heater’s specifications, typically 120V/60Hz.
Utilize the correct wire gauge as specified in the installation instructions. Connect the ground wire to the designated grounding terminal on the water heater. A secure ground connection is essential to prevent electrical shock and ensure proper operation of safety devices.
Double-check all connections for tightness and ensure no bare wires are exposed. After completing the electrical connection, restore power and verify the water heater is functioning correctly. Regular inspection of the electrical connections is recommended.

Operation and Maintenance
Regular maintenance ensures efficient and safe operation of your Reliance water heater, extending its lifespan and preventing costly repairs.
Lighting the Pilot Light (For Gas Models)
Caution: Before attempting to light the pilot light, ensure the area is well-ventilated and free of flammable materials. Always follow the specific instructions printed on your Reliance water heater’s model label, as procedures can vary.
Typically, you’ll locate the gas control valve near the burner compartment. Turn the gas control knob to the “Pilot” position and firmly press and hold it down. Simultaneously, use a long-handled lighter or spark igniter to ignite the pilot light. Continue holding the knob down for approximately 30-60 seconds after ignition.
If the pilot light doesn’t stay lit, release the knob and wait five minutes before repeating the process. If it consistently fails to ignite or remain lit, there may be a problem with the thermocouple, gas supply, or burner assembly – do not continue attempting to light it and contact a qualified technician.
Once the pilot is established, turn the gas control knob to the “On” position. A steady pilot flame indicates successful ignition and allows the main burner to operate when hot water is demanded.
Adjusting the Temperature Setting
Caution: Scalding can occur if the water temperature is set too high. Exercise caution and consider the needs of all household members, especially children and the elderly, when adjusting the temperature.
Most Reliance water heaters feature a temperature control dial or digital display located on the gas control valve or near the electrical access panel. To raise the temperature, turn the dial clockwise or use the “+” button on a digital display. Conversely, to lower the temperature, turn counterclockwise or use the “-” button.
A recommended temperature setting is 120°F (49°C), which provides sufficient hot water while minimizing the risk of scalding and energy waste. Avoid setting the temperature above 140°F (60°C).
Allow several hours for the water temperature to stabilize after making adjustments. Periodically check the water temperature at a faucet to ensure it’s at the desired level.
Routine Maintenance Tasks
Regular maintenance extends the life of your Reliance water heater and ensures efficient operation. Two key tasks are flushing the tank and checking the anode rod.
Flushing the Tank: Sediment buildup can reduce efficiency. Drain a few gallons of water from the drain valve at the bottom of the tank every six months to remove sediment. Caution: Water may be hot!
Checking the Anode Rod: The anode rod protects the tank from corrosion. Inspect it annually. If it’s significantly corroded (less than ½ inch diameter remaining), replace it. This is a crucial preventative measure.
Additionally, visually inspect the area around the water heater for leaks or signs of corrosion. Keep the area clean and free of flammable materials. Following these steps will help maintain optimal performance.
Flushing the Tank
Regularly flushing your Reliance water heater tank is vital for removing sediment buildup, which can reduce heating efficiency and potentially damage the unit. This process should be performed at least twice a year, or more frequently if you have hard water.

Procedure: First, turn off the power (gas or electric) to the water heater. Allow the water to cool down to avoid scalding. Attach a garden hose to the drain valve located near the bottom of the tank. Run the hose to a suitable drain. Open the drain valve and allow the tank to empty completely.
Once drained, briefly open the cold water inlet valve to stir up any remaining sediment, then drain again. Repeat until the water runs clear. Caution: Water may still be hot! Close the drain valve and refill the tank before restoring power.
Checking the Anode Rod
The anode rod is a sacrificial component within your Reliance water heater, designed to corrode instead of the tank itself, extending its lifespan. Regularly inspecting and replacing the anode rod is crucial preventative maintenance.
Procedure: Turn off the power and water supply to the heater. Locate the anode rod, typically under a hex head plug on top of the tank. Carefully loosen and remove the plug (you may need a breaker bar). Inspect the rod; if it’s significantly corroded (less than 6 inches of intact metal), it needs replacement.
A new anode rod can be installed by simply screwing it into place. Caution: The tank may contain sediment, so be prepared for some spillage. Replacing the anode rod proactively can prevent costly tank failures.
Troubleshooting Common Issues
Encountering problems with your Reliance water heater? This section addresses frequent concerns to help you diagnose and potentially resolve issues before calling for service. Remember to always prioritize safety – disconnect power/gas before attempting any repairs.
Common problems include: No hot water (check power/gas supply, pilot light if applicable, and thermostat settings), leaking water heater (inspect connections, pressure relief valve, and tank for corrosion), and strange noises (may indicate sediment buildup – flushing the tank is recommended).

If issues persist, consult the full manual or contact Reliance Customer Support for professional assistance. Attempting complex repairs without proper knowledge can be dangerous and void your warranty.
No Hot Water
A lack of hot water is a common issue, but often easily resolved. First, verify the water heater is receiving power or gas – check the circuit breaker or gas supply valve. For gas models, ensure the pilot light is lit; follow the manual’s instructions for relighting if necessary.
Next, inspect the thermostat setting. It may have been accidentally lowered or turned off. Allow sufficient recovery time after periods of heavy hot water usage, as the heater needs time to reheat the tank.

If these steps don’t restore hot water, there may be a more significant issue requiring professional attention. Do not attempt to repair electrical or gas components yourself. Contact Reliance Customer Support for assistance.
Leaking Water Heater
A leaking water heater demands immediate attention to prevent water damage and potential hazards. Begin by identifying the leak’s source – is it from the tank itself, connections, or the pressure relief valve?
If the leak originates from connections, carefully tighten them. However, avoid over-tightening, which could cause further damage. A leak from the pressure relief valve indicates excessive pressure or temperature within the tank; do not attempt to manually open the valve.
A leak stemming directly from the tank often signifies corrosion and may necessitate water heater replacement. Turn off the water and power/gas supply immediately and contact a qualified plumber or Reliance Customer Support for assessment and repair options.
Strange Noises
Unusual sounds emanating from your Reliance water heater can indicate underlying issues requiring investigation. Rumbling noises often suggest sediment buildup at the tank’s bottom, restricting water flow and causing overheating. This necessitates flushing the tank to remove the sediment – refer to the ‘Routine Maintenance Tasks’ section.
Popping or banging sounds may indicate a rapid buildup of steam due to sediment interfering with heat transfer. Whistling sounds could point to a restriction in the water supply line or a faulty valve.
If the noises persist or are accompanied by other issues, such as reduced hot water or leaks, immediately turn off the water heater and contact a qualified plumber or Reliance Customer Support for professional diagnosis and repair. Ignoring strange noises can lead to more significant problems.

Warranty Information and Support
Reliance provides comprehensive warranty coverage for its water heaters; registration is key for claims and updates. Access support through their website or contact customer service.
Registering Your Reliance Water Heater
Registering your new Reliance water heater is a crucial step to validate your warranty and ensure access to important product information and updates. This simple process safeguards your investment and streamlines any potential future claims.
To register, you will generally need to provide proof of ownership, such as a copy of your purchase receipt or invoice, clearly displaying the date of purchase and the model and serial numbers of your unit. Reliance emphasizes the importance of this documentation for warranty processing.
You can typically register online through the official Reliance Water Heaters website, located at https://www.reliancewaterheaters.com/find-documents-and-videos. Follow the on-screen instructions and carefully enter all required information. Alternatively, some models may include a registration card that can be mailed in. Prompt registration is highly recommended to avoid potential delays in service or warranty claims.
Understanding Warranty Coverage
Your Reliance water heater is backed by a warranty designed to protect against manufacturing defects in materials and workmanship. However, the specific terms and duration of coverage can vary significantly depending on the model and date of purchase.
Generally, the warranty covers components essential to the heater’s operation, such as the tank, heating elements, and controls. It’s vital to review the complete warranty documentation – often available on the Reliance Water Heaters website – to understand precisely what is covered and excluded.
Proper installation and regular maintenance, as outlined in this manual, are often prerequisites for maintaining warranty validity. Damage resulting from improper installation, misuse, or lack of maintenance may void the warranty. Keep your proof of purchase readily available, as it’s required for all warranty claims.
Contacting Reliance Customer Support
For assistance with your Reliance water heater, or to submit a warranty claim, reaching out to their customer support team is essential. Reliance Water Heaters provides multiple avenues for support, ensuring convenient access to help when you need it.
The primary resource is their official website, www.reliancewaterheaters.com/find-documents-and-videos, where you can find frequently asked questions, troubleshooting guides, and downloadable product literature.
Direct contact options, such as a phone number or email address, are typically listed on the website’s “Contact Us” page. When contacting support, be prepared to provide your model number, serial number, and proof of purchase to expedite the process. Clearly describe the issue you are experiencing for efficient resolution.