How to Bypass an RV Water Heater: A Quick Guide for Travelers

Understanding the RV Water Heater System

When traveling in your recreational vehicle (RV), maintaining your water heater is paramount for a comfortable experience. The water heater in your RV is connected to both a cold water supply and a hot water output. Close to these connections, you will find a short pipe where the two lines are joined, with valves at each end. These valves allow you to bypass the water heater, which can be crucial for maintenance or in case the water heater needs to be removed.

How to Bypass the Water Heater

Here is a step-by-step guide on how to bypass the water heater in your RV:

Identify the Valves: Look for the valves that are connected to the short pipe. Each valve should have a label indicating whether it is for the cold water supply or the hot water output. Operate the Valves: Turn each valve with about a 1/4 turn. This will allow the water to bypass the water heater, bypassing the unit and easing the water pressure. Disconnect the Water Lines: You can now safely disconnect the water lines from the water heater. Shut Off the Propane and Power: Before performing any maintenance or moving your RV, ensure that the propane supply and any power sources are turned off. If water is drained out and the water heater turns on, it can cause significant damage and potentially start a fire. Handle Gutters and Maintenance Lines: For motorhomes, there may be additional gutters and maintenance lines that connect the water heater to the engine, providing hot water while driving. These lines may have a bypass mechanism, or you may need to cap them off or connect them together if you intend to remove the water heater completely.

Caution and Safety

It's crucial to follow these safety precautions to avoid potential hazards:

Propane Safety: Ensure that the LP gas source supplying the water heater is turned off. Power Safety: Disconnect any electrical supply to the water heater to prevent any unintended activation. Avoid Drainage Hazards: Ensure that the water heater is disconnected from the main water supply before draining to prevent accidental activation.

Advanced Considerations for Motorhomes

If you are dealing with a motorhome, there are additional considerations for bypassing the water heater:

Dual-Use Hot Water Systems: Many motorhomes have a separate hot water system that is connected to the engine for hot water when driving. This system may have bypass valves installed to drain completely, or it may require that the lines be capped off. Proper Cap Off Procedures: If you are replacing the water heater, remember to cap off or connect the engine-connected hot water lines securely to maintain system integrity. Thorough Drainage: Ensure that all excess water and contaminants are drained from the bypassed lines to prevent blockages and damage.

Conclusion

Bypassing the RV water heater is a valuable skill for any RV owner. By understanding the system and following these detailed steps, you can safely bypass or remove the water heater, ensuring that your RV is maintained and ready for your next adventure.