1. Select a suitable installation location on the RV before installation. Do not install the water heater along the RV aisle. It shall be installed on the exterior wall of the RV with the exhaust pipe facing outwards from the RV. RV hot water heater shall be installed on a solid, non-combustible floor (other than wood flooring) or on a non-combustible frame. If the surrounding of the opening is a combustible material, use a flame-retardant insulating material such as heat-insulating mat or heat-insulating board to completely segregate the back surface of the water heater from the combustible surface.

The minimum thickness of the filling material must be greater than 0.8" (20mm). The housing connection gap behind the water heater should be sealed with a high-temperature sealant during installation to isolate it from the inside of the RV. In this way, the burning air does not come from the inside of the RV, but from the outside of the RV. The exhaust gas generated by the combustion is discharged out of the vehicle. Cut a hole size of 13"x 13" (330x330mm). The opening depth should be sufficient to accommodate the gas pipe, wire, and water pipe when the water heater is pulled out of the hole.

At the bottom or back of the hole, reserve entry space for the gas pipe, water inlet and outlet pipe, power line and other control lines. Sufficient space around the opening perimeter is recommended, usually 1.5 times for easy maintenance and testing (please refer to Picture 1).

2. Both cold water inlet and hot water outlet are 1/2" NPT, a 100 PSI pressure relief valve is needed (relief valve is not included and sold separately) for the hot water outlet. Next, connect your propane gas supply to the 5/8" UNF gas inlet, and make sure to remove the black protective plug from the tip of gas inlet before connecting to your propane gas supply. Then, connect 12V DC power supply to the black and white cables, the black cable is positive, and the white cable is negative. Lastly, connect the remote controller with the two blue cables; no need to differentiate the positive or negative poles in this case.

Note: Please make sure to leave enough extra length of the pipes and cables as a buffer, so that you can easily pull out the water heater without damaging the connected pipes and cables.

This water heater is designed for RV users. The operating voltage is DC 12V, and the gas source is propane. Excessive force will damage the water heater's cold water and hot water connections. When installing the gas joint, tighten the joint with two wrenches to avoid damaging the connection joint.

3. The water heater flange cover is pasted with 0.7"(18mm) wide single-sided adhesive EVA. The flame retardant material shall be flat and connected seamlessly. (Be careful not to be too thick) Press this product into the opened hole. Secure the water heater to the car body with 12 screws (ST5x25mm). Air and water should be isolated from the openings to prevent entry into the interior of the RV. (Please refer to Picture 3)

4. Choose a convenient location to place the remote controller. The connection between the wire controller and the water heater should be reasonably laid out according to the specific environment. Fix the bottom controller holder with the two ST4x16 screws provided and place the controller into the holder (Please refer to Picture 4).

• After fixing the screws, please use the insulation strip inside the installation kit to wrap the screw head in case of damaging the wire controller which can cause a short circuit.

After finishing the installation and adjusting on the RV, the door of the water heater should be screwed to prevent from being accidentally opened. As shown in Picture 5, please drill Ø0.25"(6.5mm) in the water heater door lock position and fix the water heater door to the RV with a M6*25mm self-tapping screw.

The user shall confirm whether the water heater is installed correctly before the initial use, carefully check that the connections are properly connected and leak free. After verifying, please follow the below steps:

1. Confirm that the power switch to the water heater is turned on.
2. After confirming the power is on, press the power button [▶️] on the wire controller.
3. Turn on the water inlet valve and gas valve.
4. Turn on the water outlet valve (hot water tap), once the water heater is initiated, hot water will flow out.

WARNING Minors are not recommended to use the machine alone unless with adults accompany.

1. The controller emits a buzzer sound "Beep" when the power is turned on. The display shows the gas source code, and this code will remain for 3 seconds before going off. The controller's indicator light is on and the back light of the power switch button is lighted.
2. After pressing the power button, the fan, shower, flame and water temperatures are displayed in real time according to the operating status.
3. Set the temperature to the temperature you required, the set temperature will flash for 5 times, then it will automatically switch to display the current water temperature.
4. Press [°F/°C] to switch between Celsius and Fahrenheit (degree).
5. In the event of a fault alarm, the display will show the error code.
6. The buzzer sound “Beep" occurs when the system is powered on or is operating effectively. When fault occurs in the system, the buzzer sound "Beep, Beep, Beep" is sounded continuously for 10 times, with an interval of one second between each sound.
7. After using the water heater, please press [&] to turn off the heater (water and gas supply should be turned off at the same time).

1. The setting range of the outlet water temperature of this machine is 95°F-123°F (35°C - 51°C); Outlet water temperature is designed not to exceed 123°F (51°C).
2. Each time you press the [⬆️] key, the temperature will increase by 1°C. See following Fahrenheit and Celsius comparison table for reference.
3. Each time you press the [⬇️] key, the temperature will increase by 1°C. See following Fahrenheit and Celsius comparison table for reference.

Celcius Degree and Fahrenheit Degree Comparison (Please refer to Table 1)

FOR YOUR SAFETY

WARNING Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this and any other appliance.

Fault handling: When the water heater fails, the display panel will show the error code, and the buzzer will sound the alarm "Beep, Beep, Beep" continuously for 10 times. Please follow the table below for the corresponding troubleshooting.

Fault alarm release and reset method: If the above code appears, please check whether water or gas is normal, press the on/off switch on the remote controller to power off or to restart the gas heater. (When the on/off button is pressed 5 times within 15 seconds, the machine will lock down automatically, even with no error code. You can either wait for 15 minutes or restart the machine by the switch or controller for immediate restart.) If after executing the above operations and it still cannot return to normal use, please inform the after-sales service personnel.

For your comfort and safety, we recommend checking and maintaining the product monthly. Disconnect the power supply and allow the unit to cool down before performing maintenance. Do not disassemble gas passages and safety device during maintenance. As the unit has some electronic components inside, do not open it to avoid contact with any type of liquid.

1. Check the air intake grille, exhaust vent for dust, avoid obstruction.
2. Check the unit for unusual appearance.
3. Check the unit for abnormal noise during operation.
4. Check for water and gas leakage.
5. Check whether the flame is burning normally every month. The flame should appear blue color through the observation window and the combustion is stable. No jitter, no lifted flame, no back draft, etc. If anything abnormal, please contact the service provider to repair.
6. When carbon deposits are found, they should be promptly notified to the after-sales service provider for maintenance. The serviceman will remove the burner with the crater facing down, use a bristled brush to remove the carbon deposit, or replace the burner with a new one.

1. Clean the unit regularly. Do not use chemical lotion and volatile solvents to avoid discoloring of the outer shell.
2. Clean the air intake grille, dust filter and exhaust port regularly for better performance. Not obstructing the flow of combustion and ventilation air. To remove the air intake filter: open the panel, remove four thumbscrews. Clean with water and reinstall back to the same position.
3. Turn off the water inlet, remove water inlet pipe, clean the filter, and reinstall.
4. Drain water from the RV regularly and flush the heat exchanger with an approved detergent. (Please refer to the RV vendor's instructions)
5. Wipe the display with a damp cloth. Do not use gasoline or grease detergents to avoid shape changes.

• Keep the appliance area clean and free from combustible materials, gasoline, and other flammable vapors and liquids.
• Pay attention to the preset temperature. Skin burn may occur when preset temp. is too high.
• Should overheating occur or the gas supply fails to shut off, turn off the manual gas control valve to the appliance.

Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Check for proper operation after servicing.

1. Plug in electricity, it will show "0-9" number program code.
2. Press [✓] for 3 seconds, it will show "PP".
3. Press [U] to show FA; Press [⬆️] to show specifications: set the value to be 00. Press [U] to exit.
4. Press [⬆️] to show PH; Press [⬇️] to show PL. Then turn on the gas and water. The water heater will run at minimum heat load.
5. After testing above, press [U] to switch specifications like PL, dH, FH, FL ...... till it shows "qu", then press [U] to save and exit setting.

Set the temperature on remote controller to be 95°F (35°C), if the water inlet temperature is high enough to make outlet water temperature higher than 95°F (35°C), it proves that the water heater is running at minimum heat load.

If the RV is to be stored during winter, water must be drained from the gas water heater to prevent freezing.

1. As shown in picture 5, the water inlet connector is connected to the water outlet pipe with switch valve by a tee fitting. The water outlet connector is connected to the compressed air with switch valve using a tee fitting. Turn off water inlet A, open water outlet B before draining. Turn water outlet D, open the compressed air valve C. Compressed air blows water out of the drain. (Note: Turn off the power and gas valve before draining. Apply compressed air (less than 43.5psi(300kPa)). Close the compressed air valve when the pipe is dry. Blowing water for a long time will cause damage to the internal parts of the water heater.)
2. Turn off the power supply, air supply, and pump on the water system. Turn on the water outlet tap.
3. Flush the entire water system according to RV manufacturer's instructions.

Note: When the RV water system re-fills with water, start the water heater only after air is purged from the pipe.

Note: Water must drain out of the RV through the pipe.

WARNING No valve is to be placed between the relief valve and water heater. The discharge from temperature and pressure relief valves shall be conducted to a suitable place and that no reducing coupling or other restrictive instruments to be installed in the discharge line. In addition, the discharge line installed is to allow complete drainage of both the valve and line.

Water heaters must be protected before travel to a potential freezing environment. Frost damage is not covered by the warranty. The anti-freezing function operation method is:

1. Draining water from the water heater. Applicable when the unit is not in use for long period. (For specific operations, see "Drainage and Storage Instructions")
2. Add antifreeze recommended by the RV manufacturer.
3. Start the antifreeze function to prevent freezing. Turn on the power switch and the gas valve, turn off the water inlet. The water heater will be on antifreeze mode automatically (please ensure enough gas in the RV).

• When the water temperature in the water heater is lower than 43°F ± 2 °F(6 ± 1 °C), the remote controller displays "FD", the machine starts the ignition and runs with a certain load. After the whole machine operates for 5 seconds or when the temperature of the water pipe reaches 90°F ± 2 °F(32 ± 1 °C ) in 2 seconds, the water heater will automatically shut off. After shutting down for 3 minutes, the water heater will check whether the temperature is lower than 43°F ± 2 °F(6±1 °C ) or when the antifreeze thermostat contact closes to run the heater and this cycle continues.
• In the process of starting the antifreeze function, if a fault occurs, the corresponding fault is reported and the code is displayed. After 15 minutes, the system automatically clears the fault code. If the freeze protection start condition is still met, the antifreeze will start again.

• When the temperature is below 44.6°F(7°C) while above 32°F(0°C), keep your water heater staying plugged in a 12V DC power supply and supplied with liquid propane gas, the anti-freeze system automatically ignites and heats up to create an inner cycle of hot water, and prevents the water heater from damages. No manual work is needed.
• While if the temperature is below 32°F (0°C), or the machine is not in use for a considerable time, or if there is no electricity in the campground, the water heater must be drained to avoid freezing damages. And here is the process:

1. Turn off the LPG (liquid propane gas) shut-off valve.
2. Power off the RV tankless water heater and unplug the power supply to the machine.
3. Turn off the water supply shut-off valve.
4. Turn on hot water taps in the RV or camper, to release the water and pressure in the pipes.
5. Screw out the drain screw (inside the machine) to drain the water; use a bucket to collect the residual water while draining.
6. It may take more than 10 minutes to drain out the water. Please make sure that water is fully drained from the machine.
7. Securely screw the drain screw back in place and turn off hot water taps and hot water outlet valve.
8. Before you use the RV tankless water heater next time, plug it back in the 12V DC power supply, power on the machine, and then turn on the water supply shut-off valve, the hot water outlet valve, and the LPG (liquid propane gas) valve.

Please kindly note damages caused by freezing are NOT covered under the RV tankless water heater warranty as the industry standard. Please kindly make sure to take all the measures to protect your RV tankless water heater.

We reserve the right to amend the product without prior notice.

Warning! For your safety, please ensure that your installation conditions meet the following requirements: (applies only to water heater products)

• The power supply of the water heater must be reliably grounded and equipped with a leakage protection device to prevent accidental circuit leakage.
• Power outlet, connector may be spilled into the water. Use a splash-proof power outlet and take care of the watertight joints.
• Water heaters should be used on the RV. Do not use indoors. Exhaust gas is discharged outside the vehicle to prevent carbon monoxide poisoning.
• Gas pipelines, the waterway must be reliably installed without leakage. Prevent damage due to leakage.
• The installation of the water heater should comply with local laws and regulations.