1. Important Safety Information
Read all instructions carefully before installation and operation. Failure to follow these instructions could result in property damage, personal injury, or death. Keep this manual for future reference.
Safety Features
The CAMMOO RV Tankless Water Heater is CSA certified and incorporates 15 safety safeguards to ensure secure operation. These include:
- Accidental Flameout Protection
- Dry Combustion Protection
- Overheat Protection
- Flue Blockage Protection
- High Air Pressure Protection
- Integrated Error Code Indicator
- Anti-Freezing Protection
- Anti-Rapid Protection
- Low Water Pressure Startup
- Reverse Connection Protection
- Low Voltage Protection
- Power Outage Protection
- Water Evaporation Protection
- Built-in Self-Diagnosis
- Fresh Air Maintenance

Figure 1: Overview of the 15 safety safeguards.
Always ensure proper ventilation and follow all local and national codes for gas and electrical installations.
2. Product Overview
The CAMMOO RV Tankless Water Heater provides instant hot water for your recreational vehicle. It features a 65,000 BTU heating capacity, a 3.9 GPM flow rate, and operates on 12V DC power. The unit includes a safety door and a wired controller for convenient operation.

Figure 2: CAMMOO RV Tankless Water Heater (White Model).
Key Features
- Instant Hot Water: Delivers hot water at your set temperature within 3 seconds.
- Thermostatic Control: Maintains water temperature with minimal fluctuation (within ±3°F).
- Wired Controller: Intuitive display for real-time monitoring of working status.
- Dual Water Outlet: Enables both internal and external water usage.
- Seasonal & Altitude Adaptation: Smart heating power control, anti-freeze mode (activates at 37.4°F), and high-altitude mode (up to 9800ft).
- Integrated Safety Door: Provides reliable protection and a complete installation solution.
3. Setup and Installation
The CAMMOO RV Tankless Water Heater is designed for built-in installation. Clear labeling on the unit simplifies the setup process. The wired controller uses a plug-and-play connector, eliminating complex wiring.
Installation Steps
- Prepare the Installation Area: Ensure the mounting location in your RV can accommodate the unit's dimensions (15"W x 15"H x 14.3"D) and provides adequate ventilation.
- Mount the Unit: Securely install the water heater into the designated opening.
- Connect Water Lines: Connect the cold water inlet (1/2" NPT) and hot water outlet (1/2" NPT). Ensure all connections are watertight.
- Connect Gas Line: Connect the propane gas inlet (pre-installed adapter 5/8" UNF). Verify all gas connections are secure and leak-free.
- Connect Power: Connect the 12V DC power cord (5A-10A). The unit operates on 12V DC.
- Install Wired Controller: Plug the wired controller into its dedicated port. No complex wiring is required for the controller.
- Install Safety Door: Attach the included safety door to the exterior of the RV, covering the water heater compartment.

Figure 3: Connection points and dimensions for installation.
It is recommended that installation be performed by a qualified technician to ensure compliance with all safety standards and proper operation.
4. Operating Instructions
Once installed, operating your CAMMOO RV Tankless Water Heater is straightforward using the wired controller.
Initial Startup
- Ensure the propane supply is open and the water supply is connected and turned on.
- Turn on the 12V DC power to the unit.
- Press the ON/OFF button on the wired controller.
- The unit will initiate its startup sequence and display current status.
Setting Water Temperature
Use the 'TEMP UP' and 'TEMP DOWN' buttons on the wired controller to adjust your desired water temperature. The maximum temperature is 123°F. The unit will rapidly heat water to your set temperature within approximately 3 seconds.

Figure 4: Wired Controller Display.
Real-Time Monitoring
The wired controller provides real-time feedback on the unit's operation, including:
- Inlet and Output Temperatures
- Set Temperature
- DC Voltage
- Water Flow Rate (LGPM)
- Error Codes (if applicable)
Seasonal and Altitude Modes
The water heater automatically adapts to various environmental conditions:
- Smart Heating Power Control: Adjusts flame output to prevent overheating in summer and ensure sufficient heat in winter.
- Anti-freeze Mode: Automatically activates when the ambient temperature drops to 37.4°F (3°C) to prevent pipe damage.
- High-Altitude Mode: Automatically adjusts operation for altitudes up to 9800 feet (3000 meters) to maintain performance.

Figure 5: RV Journeys Unrestricted by Season and Altitude.
External Water Usage
The external water outlet allows for convenient outdoor water use, such as washing gear or pets, keeping dirt outside your RV.

Figure 6: Multi-Scenario Water Needs.
5. Maintenance
Regular maintenance ensures the longevity and efficient operation of your CAMMOO RV Tankless Water Heater.
- Regular Inspection: Periodically check all water and gas connections for leaks. Inspect the exhaust vent for any blockages.
- Clean Exterior: Keep the exterior of the unit and the safety door clean.
- Winterization: If storing the RV in freezing temperatures, ensure the unit is properly winterized to prevent damage, even with the automatic anti-freeze mode. Consult your RV's manual for specific winterization procedures.
- Professional Servicing: It is recommended to have the unit inspected and serviced by a qualified technician annually.
6. Troubleshooting
The wired controller features an integrated error code indicator to assist with troubleshooting. If an issue arises, check the display for any error codes and refer to the table below (if available in the full manual) for corresponding solutions.
Common Issues and Solutions
- No Hot Water:
- Check propane supply and ensure gas valve is open.
- Verify 12V DC power supply is connected and active.
- Ensure water supply is turned on and water pressure is adequate (14.5 - 110 PSI).
- Check for error codes on the controller.
- Inconsistent Water Temperature:
- Ensure only one hot water outlet is in use at a time for optimal performance.
- Verify water flow rate is within the recommended range.
- Unit Not Turning On:
- Confirm power connections and fuse integrity.
- Check the ON/OFF button on the controller.
For persistent issues or error codes not listed, please contact CAMMOO customer support.
7. Specifications
Detailed technical specifications for the CAMMOO RV Tankless Water Heater Model RV-65000W.

Figure 7: Product Specifications.
| Specification | Value |
|---|---|
| Brand | CAMMOO |
| Model Number | RV-65000W |
| Power Source | 12V DC |
| Product Dimensions (W x H x D) | 15" x 15" x 14.3" |
| Item Weight | 28.53 Pounds |
| Special Features | Anti-Freezing Protection, Dry Combustion Protection, Integrated Error Code Indicator, Overheat Protection, Pressure Release Valve |
| Color | White |
| Flow Rate | 3.9 Gallons Per Minute |
| Maximum Temperature | 123 Degrees Fahrenheit |
| Heat Output | 65000 BTU |
| Mount Type | Built-in |
| Is Electric | No |
| Applicable Water Pressure | 14.5 - 110 PSI |
| Operating Air Pressure | 2 kPa - 3.3 kPa |
8. Warranty and Support
For warranty information, technical support, or service inquiries, please contact CAMMOO customer service. Refer to your purchase documentation for specific warranty terms and contact details.
CAMMOO Direct Customer Service:
- Visit the official CAMMOO website for support resources.
- Refer to the contact information provided with your product packaging.





