Suburban SW6DE Manual: A Comprehensive Guide
This comprehensive manual details the Suburban SW6DE water heater, offering guidance from installation through maintenance, ensuring optimal performance and longevity.
It covers parts diagrams, safety protocols, troubleshooting, and specific model information, including wiring diagrams and parts lists.
Understanding this guide will empower users to safely and efficiently operate their RV water heating system, referencing Suburban warranty details and support contacts when needed.
The Suburban SW6DE is a widely utilized, reliable water heater specifically designed for recreational vehicles (RVs). This model provides on-demand hot water, enhancing the comfort and convenience of camping and travel. Understanding its operation is crucial for safe and efficient use. This manual serves as a complete resource, guiding users through every aspect of the SW6DE, from initial setup to ongoing maintenance.
The SW6DE is known for its robust construction and relatively straightforward operation. However, proper installation, ventilation, and regular maintenance – including anode rod inspections – are vital for maximizing its lifespan and preventing potential hazards. This guide details these procedures, referencing specific parts diagrams and wiring diagrams to ensure accurate understanding. It also addresses common issues, such as pilot light problems and lack of hot water, offering troubleshooting steps to resolve them effectively. Remember to always use genuine Suburban parts for replacements.
Safety Precautions and Warnings
WARNING: Improper installation or operation of the Suburban SW6DE water heater can result in fire, explosion, carbon monoxide poisoning, or severe burns. Always adhere to the following safety precautions. Ensure adequate ventilation is present during operation to prevent carbon monoxide buildup – a potentially fatal hazard. Never attempt to modify the gas valve assembly or bypass safety features.
Before performing any maintenance, disconnect both the gas supply and electrical power (120V AC). Regularly inspect the burner assembly for obstructions and ensure the flue pipe is clear and unobstructed. Do not replace the anode rod with non-Suburban parts. Improper anode rod selection can accelerate tank corrosion. If you smell gas, immediately shut off the gas supply and contact a qualified technician. Refer to the warranty information for details on coverage and limitations.

Understanding the SW6DE Components
This section details the core elements of the Suburban SW6DE, including the anode rod, thermocouple, thermostat, gas valve, and burner assembly, for comprehensive understanding.
Water Heater Parts Diagram Overview
The Suburban SW6DE water heater’s functionality relies on a carefully integrated system of components, best understood through a detailed parts diagram. This overview highlights key elements for identification and maintenance. The diagram showcases the location of the gas valve assembly, crucial for regulating gas flow to the burner.
You’ll find the burner assembly itself, responsible for generating heat, alongside the thermocouple and thermostat, which manage temperature control and safety. The anode rod, a sacrificial component protecting the tank from corrosion, is clearly indicated. Water inlet and outlet connections are also prominently displayed, as is the control panel.
Referencing this diagram during installation, troubleshooting, or parts replacement is essential. Understanding the spatial relationships between these components simplifies maintenance procedures and ensures safe operation. Online resources and the complete manual provide access to high-resolution diagrams for detailed examination.
Anode Rod: Function and Replacement
The anode rod is a critical sacrificial component within the Suburban SW6DE water heater, designed to protect the steel tank from corrosion. It attracts corrosive elements, essentially corroding instead of the tank itself, extending the heater’s lifespan. Regular inspection and replacement are vital for continued protection.
Over time, the anode rod depletes as it performs its protective function. A depleted rod offers no corrosion resistance, leading to tank failure. Replacement frequency depends on water quality and usage, but annual inspection is recommended. Signs of depletion include significant reduction in rod size or visible corrosion.
Crucially, always replace the anode rod with a genuine Suburban replacement part. Using non-Suburban alternatives may compromise corrosion protection. Replacement involves draining the tank, removing the old rod, and installing the new one with Teflon tape on the threads.
Thermocouple and Thermostat Explained
The thermocouple and thermostat are essential safety and control components within the Suburban SW6DE water heater. The thermocouple safeguards against gas leaks; it senses the pilot light flame and allows gas flow only when heat is detected, shutting off the gas supply if the flame extinguishes. This prevents dangerous gas buildup.
The thermostat regulates water temperature. It monitors the water temperature within the tank and cycles the burner on and off to maintain the desired setting. The SW6DE typically features adjustable thermostats, allowing users to select their preferred water temperature.
Faulty components can cause operational issues. A failing thermocouple results in pilot light problems, while a malfunctioning thermostat leads to inaccurate temperature control or no hot water. Replacement requires careful attention to detail and adherence to safety guidelines.
Gas Valve Assembly Details
The gas valve assembly is a critical component controlling gas flow to the burner within the Suburban SW6DE water heater. It comprises several key parts, including the main valve, pilot valve, and regulator. The main valve opens and closes, regulating gas supply to the burner based on thermostat signals.
The pilot valve delivers a small amount of gas to establish and maintain the pilot light. The regulator ensures consistent gas pressure, crucial for efficient combustion. Proper functioning of this assembly is vital for safe and reliable operation.
Inspecting the valve for leaks and damage is essential during maintenance. Replacement should only be performed by qualified personnel, adhering strictly to safety protocols. Using only Suburban-approved replacement parts is crucial for compatibility and safety.
Burner Assembly and Operation
The burner assembly within the Suburban SW6DE is responsible for generating heat through controlled combustion of propane or natural gas. It consists of the burner itself, a flame spreader, and often a burner screen. Gas, regulated by the gas valve, mixes with air and ignites, producing a stable flame.
Proper operation relies on a clean burner and unobstructed airflow. Soot or debris can impede combustion, leading to inefficient heating and potential safety hazards. The flame should be blue with minimal yellow tipping, indicating complete combustion;
Regular inspection for corrosion or damage is crucial. A malfunctioning burner may require cleaning or replacement. Always ensure the gas supply is shut off before performing any maintenance on the burner assembly, prioritizing safety above all else.

Installation Procedures

Proper installation of the Suburban SW6DE requires adherence to safety guidelines, including correct ventilation, gas and water line connections, and electrical grounding for 120V AC models.
Proper Ventilation Requirements
Ensuring adequate ventilation is paramount for the safe operation of your Suburban SW6DE water heater. This unit must be installed in a compartment that provides sufficient air for combustion, preventing carbon monoxide buildup.
The installation area should adhere to all local and national codes regarding appliance ventilation. Specifically, a minimum clearance of at least six inches must be maintained around the water heater’s combustion chamber, and the compartment itself needs ample openings to the outside.
Do not restrict airflow to the unit. Avoid enclosing the water heater in a tightly sealed compartment. Inspect ventilation pathways regularly for obstructions like debris or insulation. Failure to provide proper ventilation can lead to dangerous conditions, including carbon monoxide poisoning and inefficient heater operation. Always prioritize safety when installing and maintaining your SW6DE.

Gas Line Connection Instructions
Connecting the gas line to your Suburban SW6DE requires strict adherence to safety protocols. Always shut off the gas supply before beginning any work. Use only approved gas piping materials and fittings, compatible with LP or natural gas, as specified by local codes.
Apply a gas-rated pipe sealant specifically designed for gas lines to all threaded connections, avoiding excessive sealant that could enter the gas valve. Ensure all connections are leak-tested using a non-corrosive leak detection solution – never use an open flame.
The gas supply line must be sized appropriately for the BTU input of the SW6DE. A qualified technician should perform the connection and leak testing to guarantee a safe and reliable gas supply. Improper connections can lead to gas leaks, posing a significant fire or explosion hazard.
Water Line Connection Instructions
Connecting the water lines to your Suburban SW6DE requires careful attention to prevent leaks and ensure proper operation. Utilize appropriate plumbing fittings and ensure compatibility with your RV’s fresh water system – typically ½ inch NPT connections.
Apply Teflon tape to all threaded connections to create a watertight seal. Avoid over-tightening, as this can damage the fittings or the water heater tank. Inspect all connections thoroughly for leaks after initial installation and after any subsequent maintenance.
A pressure relief valve must be installed on the hot water outlet line, as per plumbing codes, to prevent excessive pressure buildup. Regularly check the pressure relief valve for proper function. Proper water line connections are crucial for safe and efficient water heating.
Electrical Connection Guidelines (120V AC)
Connecting the Suburban SW6DE to a 120V AC power source requires strict adherence to electrical safety standards. Ensure the RV’s electrical system is properly grounded and meets all applicable codes. A dedicated 15-amp circuit is recommended for optimal performance and to prevent overloading.

Always disconnect power before making any electrical connections. Use appropriately sized wiring (typically 14 AWG) and a properly rated circuit breaker. The SW6DE typically utilizes a three-prong plug; ensure correct polarity when connecting.
Never modify the power cord or plug. Inspect wiring for damage before each use. Improper electrical connections can create a fire hazard or damage the water heater. Consult a qualified electrician if you are unsure about any aspect of the electrical installation.

Operating the SW6DE Water Heater
Successfully operating your Suburban SW6DE involves understanding the lighting sequence, temperature adjustments, and control panel functions for reliable hot water during your travels.
Lighting the Water Heater – Step-by-Step
Before attempting to light your Suburban SW6DE water heater, ensure the area is well-ventilated and free of flammable materials. Begin by turning the gas supply valve to the “ON” position. Locate the control panel and set the thermostat to the desired temperature – a starting point of 120°F is recommended. Next, press and hold the reset button, then simultaneously press and hold the ignition button. You should hear a clicking sound as the igniter attempts to light the pilot flame.
Continue holding both buttons for approximately 30-60 seconds, observing the pilot flame through the viewing window. If the pilot does not light after several attempts, release the buttons and allow the gas to dissipate before trying again. Once the pilot is lit, release the reset button, but continue holding the ignition button for an additional 10 seconds to ensure the flame remains stable. Finally, release the ignition button. The main burner should ignite shortly after. If it doesn’t, consult the troubleshooting section of this manual.
Adjusting the Water Temperature
The Suburban SW6DE water heater’s temperature is adjusted via the thermostat dial located on the control panel. Rotating the dial clockwise increases the water temperature, while rotating it counterclockwise decreases it. The dial is typically marked with temperature ranges, allowing for precise adjustments. A comfortable and safe temperature setting is generally between 120°F and 130°F, minimizing the risk of scalding while providing sufficient hot water for typical use.
Avoid setting the thermostat to excessively high temperatures, as this can lead to energy waste and potential damage to the water heater. Always allow sufficient time – approximately 30 minutes – for the water to reach the newly selected temperature after making an adjustment. Regularly check the water temperature at the faucet to ensure it aligns with your desired setting. Be mindful of children and elderly individuals who may be more sensitive to hot water.
Understanding the Control Panel
The Suburban SW6DE water heater’s control panel is the central hub for operation and monitoring. Typically, it features a thermostat dial for temperature adjustment, an on/off switch to control the heater’s operation, and indicator lights displaying the status of the pilot light and main burner. Some models may include additional features like electronic ignition controls or diagnostic indicators.
Familiarize yourself with the function of each control and indicator. The thermostat dial, as previously discussed, regulates water temperature. The on/off switch enables or disables the heater. Indicator lights provide visual cues regarding the system’s operational state. Refer to the parts diagram for specific component locations. Understanding these controls ensures safe and efficient operation, allowing for quick identification of potential issues.

Maintenance and Troubleshooting
Regular cleaning, winterization, and prompt issue resolution are vital for the SW6DE’s longevity. This section details procedures for common problems like no hot water or pilot light failures.
Regular Cleaning Procedures
Maintaining a clean SW6DE water heater is crucial for efficient operation and preventing premature failure. At least twice a year, flush the tank to remove sediment buildup. Begin by turning off the gas supply and electrical power. Drain the tank completely through the drain valve, then partially refill it with fresh water.
Run the heater on gas for a short period to agitate and flush out loosened sediment. Repeat this process several times until the drained water runs clear. Inspect the burner assembly for obstructions and clean it with a soft brush. Do not use abrasive cleaners, as they can damage components. Regularly check the vent pipe for blockages, ensuring proper exhaust flow. A clean system operates more safely and efficiently, extending the lifespan of your Suburban SW6DE water heater.
Winterizing the SW6DE Water Heater
Proper winterization is essential to prevent damage from freezing temperatures. Begin by completely draining the water heater tank and all associated water lines. Disconnect the gas supply and electrical power before proceeding. Utilize compressed air to blow out any remaining water from the tank, lines, and fittings.
Pour non-toxic RV antifreeze into the tank through the water inlet, ensuring it reaches all internal components. Do not use automotive antifreeze, as it is harmful to the water system. Reconnect the water lines loosely to allow for expansion. Consider removing the anode rod for the winter to prevent corrosion. Remember to flush the system with fresh water before resuming normal operation in the spring, ensuring all antifreeze is removed.
Troubleshooting Common Issues – No Hot Water
If your SW6DE isn’t producing hot water, begin by verifying the gas supply is open and the propane tank isn’t empty. Check the thermostat setting; ensure it’s appropriately adjusted for desired water temperature. Inspect the pilot light – a consistently extinguished pilot indicates a potential thermocouple or gas valve issue.
Confirm the electrical connection (if applicable) is secure and receiving power. A faulty heating element could also be the culprit. Examine the anode rod; a severely corroded rod can hinder heating efficiency. If these steps don’t resolve the issue, consult the wiring diagram and parts list to identify and potentially replace defective components. Always prioritize safety and disconnect power/gas before inspecting internal parts.
Troubleshooting – Pilot Light Problems
A persistent pilot light issue on your SW6DE often points to a faulty thermocouple. This component senses the pilot flame and allows gas flow; if it fails, the gas valve shuts off. Carefully inspect the thermocouple for corrosion or damage and consider replacement. A dirty pilot orifice can also prevent a stable flame – gently clean it with a fine wire or compressed air.
Ensure proper gas pressure is reaching the water heater. Low gas pressure can cause the pilot to extinguish repeatedly. Check for kinks or obstructions in the gas line. If the pilot lights briefly then goes out, the thermocouple is the most likely cause. Never attempt to modify the gas valve or pilot assembly; always use genuine Suburban replacement parts.
Identifying and Replacing Faulty Parts
Accurate diagnosis is crucial before replacing any SW6DE component. Begin by consulting the parts diagram to locate the suspected part. Common failures include the anode rod (corrosion), thermocouple (pilot issues), gas valve (no gas flow), and burner assembly (incomplete combustion). Always disconnect the gas supply and electrical power before any repair work.
Genuine Suburban parts are essential for safety and performance; avoid aftermarket substitutes. When replacing the anode rod, ensure the new one is the correct length and material. For gas valve or burner assembly replacements, follow the detailed instructions in this manual. Proper sealing of gas connections is paramount – use pipe dope specifically designed for gas lines. Document all repairs for warranty purposes.

Specific Model Information (SW6DE)
This section provides detailed specifications, dimensions, and a dedicated wiring diagram for the SW6DE model, alongside a comprehensive parts list for easy identification and ordering.
SW6DE Specifications and Dimensions
The Suburban SW6DE water heater is designed for reliable performance in recreational vehicles. It boasts a 6-gallon capacity, making it suitable for small to medium-sized RVs and travel trailers. Dimensions are crucial for proper installation; the SW6DE typically measures approximately 18.5 inches in height, 12.6 inches in width, and 10.8 inches in depth – always verify with your specific unit.
Operating at 120V AC, it requires a dedicated circuit and adheres to standard electrical safety guidelines. The unit’s input power is around 1350 watts. Gas consumption, when operating on propane, is approximately 19,000 BTU/hour. The SW6DE’s weight is around 28 pounds when empty, a factor to consider during installation. Proper clearance around the unit is essential for safe operation and to meet ventilation requirements, as outlined in the installation section.
SW6DE Wiring Diagram
The SW6DE’s wiring utilizes a standard 120V AC connection, requiring a three-wire system: hot, neutral, and ground. The diagram illustrates the connection points for these wires within the water heater’s control panel; A crucial component is the thermostat, wired to regulate water temperature, and the high-limit switch, providing safety against overheating.
Carefully follow the color-coded wiring – typically black for hot, white for neutral, and green or bare copper for ground. Incorrect wiring can lead to malfunction or safety hazards. The diagram also shows the wiring for the optional exterior temperature sensor, if equipped. Always disconnect power before attempting any wiring modifications or repairs. Refer to a qualified electrician if you are unsure about any aspect of the wiring process, ensuring compliance with local electrical codes.
SW6DE Parts List
This comprehensive list details replaceable components for the Suburban SW6DE water heater, facilitating repairs and maintenance. Key parts include the gas valve assembly, burner assembly, thermostat, thermocouple, and anode rod – essential for corrosion prevention. The list also includes the control panel, igniter, and various plumbing fittings.
Specific part numbers are crucial for accurate ordering; consult the diagram for identification. Always use genuine Suburban parts to ensure compatibility and maintain warranty validity. Regularly inspect and replace the anode rod, typically every three years, to prolong the water heater’s lifespan. Ordering information and availability can be found through authorized Suburban dealers or their customer support channels. Maintaining a stock of frequently replaced parts streamlines maintenance and minimizes downtime.

Warranty Information
Suburban offers a limited warranty covering defects in materials and workmanship on the SW6DE. Coverage details, duration, and exclusions are outlined within the warranty documentation provided with your unit.
Suburban Warranty Coverage Details
Suburban’s warranty for the SW6DE water heater provides coverage against defects in materials and workmanship for a specified period from the date of original purchase. This warranty applies to the original purchaser and is non-transferable. Specifically, the warranty covers components like the gas valve assembly, burner, and tank, protecting against premature failure under normal use.
However, the warranty does not cover damage resulting from improper installation, misuse, neglect, accidents, or unauthorized modifications. Regular maintenance, such as anode rod replacement, is crucial for maintaining warranty validity. Damage caused by scale buildup, freezing, or using non-Suburban replacement parts will also void the warranty. Proof of purchase is required for all warranty claims. Contacting Suburban customer support initiates the claim process, requiring detailed information about the issue and the unit.
Contacting Suburban Customer Support
Suburban’s customer support is readily available to assist with any questions, concerns, or warranty claims regarding your SW6DE water heater. For immediate assistance, you can reach their dedicated support team via telephone during regular business hours. Their website provides a comprehensive FAQ section addressing common issues and troubleshooting steps, offering self-service solutions.
Alternatively, you can submit a detailed inquiry through their online contact form, including your model number (SW6DE), purchase date, and a clear description of the problem. Providing photos or videos can expedite the troubleshooting process. Suburban also maintains a network of authorized service centers for more complex repairs. Ensure you have your proof of purchase readily available when contacting support to facilitate warranty verification and efficient resolution of your issue.
















































































