Ranein Tankless Gas Water Heater: Instruction For Installation And Use

DANGER: CARBON MONOXIDE HAZARD

This appliance can produce carbon monoxide, which is colorless and odorless. Using it in an enclosed space can be fatal. Never use this appliance in confined areas such as a camper, tent, car, or home.

DANGER: HOT WATER

Water temperatures over 125°F (52°C) can cause severe burns or death from scalding instantly. Children, the disabled, and the elderly are at the highest risk of being scalded. Always feel the water before bathing or showering.

DANGER: GAS LEAKS

If you smell gas: 1. Shut off the gas to the appliance. 2. Extinguish any open flames. 3. If the odor continues, keep away from the appliance and immediately call your fire department. Failure to follow these instructions could result in a fire or explosion, which could cause property damage, personal injury, or death.

DANGER: FLAMMABLE MATERIALS

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Keep this appliance away from all combustible materials. Minimum clearances: rear at 20 inches, two sides at 40 inches, top at 40 inches. Turn off the gas at the cylinder valve after use. Disconnect and remove the cylinder before storing this appliance indoors.

WARNING: CALIFORNIA PROPOSITION 65

This appliance contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

WARNING: MANUFACTURED HOMES

This water heater is not approved for use in manufactured (mobile) homes. Please check local code restrictions pertaining to permanent/fixed installations in manufactured homes in your area.

NOTICE: MIXING VALVES

When this water heater is supplying general-purpose hot water requirements for use by individuals, a thermostatically controlled mixing valve for reducing point-of-use water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information.

CAUTION: WATER SUPPLY CONDITIONS

This water heater must only be used with clean, potable water free of corrosive chemicals, sand, dirt, or other contaminants. Inlet water temperature must be above 32°F (0°C) but not exceeding 118°F (48°C). DO NOT reverse the hot and cold water connections.

DANGER: NATURAL GAS AND LIQUEFIED PETROLEUM MODELS SAFETY

Both propane and natural gas have odorants added to aid in detecting a gas leak. Some people may not physically be able to smell or recognize these odorants. Always check with commercial leak detectors or soapy water. Gas detectors are recommended. Water heaters utilizing propane gas differ from natural gas models. No attempt should ever be made to convert the water heater from natural gas to propane gas.

WARNING: VAPORS FROM FLAMMABLE LIQUIDS

Vapors from flammable liquids can explode and ignite, causing death or severe burns. Do not use or store flammable products, such as gasoline, solvents, or adhesives, in the same room or area as the water heater. Keep flammable products: 1. Far away from the heater 2. In approved containers 3. Tightly closed 4. Out of children's reach. The water heater has a main burner flame. The main burner flame can come on at any time and any where. It will ignite flammable vapors. Vapors cannot be seen, are heavier than air, go a long way on the floor, and can be carried from other rooms to the main burner flame by air currents.

WARNING: COMBUSTIBLE CONSTRUCTION

Combustible construction refers to adjacent walls and ceilings and should not be confused with combustible or flammable products and materials. Combustible and/or flammable products and materials should never be stored in the vicinity of this or any gas appliance.

NOTICE: CORROSIVE ATMOSPHERES

The air in beauty shops, dry cleaning establishments, photo processing labs, and storage areas for liquid and powdered bleaches or swimming pool chemicals often contains such halogenated hydrocarbons. An air supply containing halogenated hydrocarbons may be safe to breathe, but when it passes through a gas flame, corrosive elements are released that can shorten the life of any gas-burning appliance. The water heater warranty is voided if the heater fails due to operation in a corrosive atmosphere. The water heater should not be installed near any air supply containing halogenated hydrocarbons.

NOTICE: VENTING THROUGH CLOSED SPACES

If the vent piping passes through a closed space, wrap the vent pipe with non-combustible insulation material that is at least 3/4" thick. DO NOT allow the insulation material to come into contact with flammable materials. Maintain a minimum clearance of 6" between the vent pipe and the ceiling. Follow local codes. For maintenance and inspection purposes, the following openings must be made: TWO (2) inspection openings to allow access to the venting system. One opening should be near where the vent pipe enters the ceiling, and the other should be near the vent termination. A ventilation hole with a 16 sq. in. opening should be made at least every 10 feet.

NOTICE: VENT TERMINATION CLEARANCE

For non-direct vent installations in the U.S. and Canada, specific clearance requirements apply for various termination points relative to windows, doors, corners, and air supply inlets. Refer to the diagrams and tables provided for detailed specifications.

Water Heater Installation Checklist

• Unbox and check whether the water heater, installation manual, owner's guide, parts, and accessories bag are included.
• Ensure there are no corrosive chemicals in the air intake.
• The water supply should be free of chemicals, and water hardness exceeding the allowed level may damage the water heater.
• Ensure there is enough space required for installation.
• Ensure there is enough distance between the exhaust vent and the air inlet of houses.
• Use the correct exhaust vent products and follow the installation manual provided by the supplier.
• For indoor water heater models, ensure the number of elbows used does not exceed the maximum quantity allowed, and the total length of the exhaust vent pipe (including elbows, each equivalent to 6 feet) does not exceed the maximum length allowed for the water heater.
• For indoor water heater models, ensure the exhaust vent pipe slopes outward and downward at an angle of 3 degrees.
• Turn off the hot water switch, turn on the cold water switch and the drain screw to flush debris and air out of the water pipes. Debris inside the water may damage the water heater. Use buckets or extra water pipes if needed.
• Ensure there are no water leakages.
• Turn off the cold and hot water switches before cleaning the water inlet filter. Place a bucket under the water heater's filter to catch any water. Screw out the water inlet filter, wash off debris and dust, then hand-screw the filter back in. Once done, turn on the cold and hot water switches.
• Ensure the pressure relief valve's relieving capacity exceeds that of the water heater BTU input rating. Refer to the specifications on the side of the machine for BTU input ratings.
• Install a manual gas shut-off valve between the water heater and your gas supply line.
• Confirm there is no gas leakage in the piping and fittings.
• Confirm the gas inlet pressure is within the min-max range as required.
• Ensure you are using the gas type required by the water heater.
• Confirm the power supply is 120 V/60 Hz and properly grounded.
• Confirm the thermostat works normally.
• Connect a gas manometer to the pressure port to verify the system is working normally. Turn on appliances that use high flow rate hot water and set the water heater to its maximum operation capacity; the inlet gas pressure must be higher than the minimum pressure on the specification label.
• Do not introduce poisonous chemicals into drinking water, such as those used to process broiler water.
• Drain the water from the water heater if it will not be used for an extended period.

Mounting the Water Heater

Ensure that the location of the appliance allows for easy access and operation. For drywall or concrete walls, use drywall anchors or lag bolts. The water heater requires a 120VAC/60Hz power supply. Make sure there is a grounded receptacle near the water heater. The power supply cord is 5 feet in length. Drill holes according to the sizes indicated in the figure. Insert expansion screws into the top holes and rubber screws into the bottom holes.

CAUTION: Reinforcement of the wall is required if the wall is not strong enough to support the appliance. The indoor unit must be installed with a Category III vent pipe, in accordance with the vent supplier/manufacturer instructions and local codes.

Venting

The installation of venting must comply with national codes, local codes, and the vent manufacturer's instructions. The water heater must be vented to the outdoors as described in these instructions. DO NOT connect this water heater to an existing vent or chimney; it must be vented separately from all other appliances. All vent components should be UL 1738 Certified stainless steel venting materials. The specified vent termination must be used. Use a vent pipe with an anti-disconnection structure. The use of high-temperature silicone may be required to seal vent connections. The unit can be vented either horizontally or vertically. Vent pipe runs must be adequately supported along both horizontal and vertical runs. The maximum recommended unsupported span should be no more than 5 feet. Support isolation hanging bands should be used.

Venting Lengths

Owner must refer to vent manufacturer's instructions and specifications.

One (1) 90° elbow is equivalent to 5 feet of straight pipe. A 45° elbow is equivalent to 2 feet 6 inches of straight pipe. The termination elbow does not count as an elbow when determining total vent length. The vent must be installed with a slight downward slope of 1/4" per foot of horizontal run toward the vent terminal. This ensures that any condensate formed during the operation of the unit is evacuated from the appliance. An upward slope of 1/4" per foot is acceptable when a downward slope is not possible; however, a UL-approved Category III stainless steel condensate trap MUST be installed at the beginning of the horizontal run.

The venting may be as short as 12 inches, provided one vent termination is installed outdoors through a sidewall, one 90° elbow is included in the installation, and the wall thimble is properly installed.

NOTICE: Ensure that the seam of the vent pipe in horizontal runs is positioned toward the top of the installation.

Draining the Condensate

Under certain conditions, installations in unconditioned spaces or with long horizontal or vertical runs may accumulate condensate. Condensate is acidic; please refer to local, state (provincial), or federal codes for proper handling methods. To prevent condensate from draining back into the water heater, we recommend installing a condensate trap and drain in the horizontal vent section, as close as possible to the water heater vent connection. Failure to follow proper condensate procedures will void the warranty.

Pipe Installation

Use pressure-resistant pipe to connect the inlet and outlet water pipes of the water heater to the local water supply. Ensure that the rubber ring is properly placed. Before connecting the inlet water pipe, flush the interior of the pipe to remove any debris.

Pressure Testing the Gas Supply System

WARNING: Install a gas pressure regulator in the gas supply line that does not exceed the maximum supply pressure. DO NOT use an industrial-type gas regulator. The water heater must be isolated from the gas piping system by closing the manual gas shut-off valve during any pressure testing of the gas supply piping at pressures equal to or less than 1/2 PSI (14" w.c.).

Leak Testing

WARNING: Never use an open flame to test for gas leaks, as it could result in property damage, personal injury, or death. The water heater and its gas connections must be leak-tested at normal operating pressures before being placed in operation. Turn on the gas shut-off valve(s) to the water heater. Use a commercial leak detector or a soapy water solution to test for leaks at all connections and fittings. Bubbles will indicate a gas leak that must be corrected. All connections should also be leak-tested after the water heater is in operation.

Electrical Connection

Power cord

The electric power supply requirement for this water heater is 120VAC/60Hz, 2 Amps. The water heater comes with a three-pin power supply cord. Use only a power outlet with a grounding terminal. It is recommended to install an electric leakage breaker (GFCI). Keep any excess of the power supply cord on the outside of the water heater. If local codes require hardwiring, refer to the instructions for "Hardwiring the electrical connections".

Hardwiring the Electrical Connections

Wiring should be performed by a qualified electrician in accordance with local codes. The water heater requires 120VAC/60Hz power and must be properly grounded. DO NOT connect the grounding wire to water pipes, gas pipes, telephone cables, lightning conductor circuits, or the grounding circuit of other equipment that carries a ground-fault interrupter. An ON/OFF switch must be installed for the incoming 120VAC power supply. Wire the water heater exactly as shown in the diagram. A wiring diagram is also provided inside the cover panel. A green screw is provided in the junction box for the grounding connection. Connect the live wire to the black leg wire and the neutral wire to the white neutral wire.

CAUTION: Label all wires prior to disconnection when servicing the controls. Wiring errors can cause improper and dangerous operation. Verify correct operation after servicing.

WARNING: Shock Hazard - Line voltage is present. Before servicing the water heater, turn off the electrical power at the main disconnect or circuit breaker. Failure to do so could result in severe personal injury or death.

Hot and Cold Pipe Insulation Installation

For increased energy efficiency, use pipe insulation. Install the insulation as shown in the illustrations above, ensuring it covers the pipes all the way to the top. Do not cover any drain or pressure valve(s).

Lighting The Water Heater

Before operating this water heater, be sure to read and follow the instructions on the label pictured below, as well as all other labels on the water heater and the warnings printed in this manual. Failure to do so may result in unsafe operation of the water heater, leading to property damage, personal injury, or death. If you have any difficulty reading or following the instructions in this manual, STOP! Get help from Ranein at www.ranein.net.

Operating The Water Heater

Turning on the water heater

1. Ensure that the gas type you are using matches the type specified on the data plate.
2. Turn on the main gas valve, plug in the power cord (ensure the socket is properly grounded), and press the "ON/OFF" button on the control panel. Set the temperature to 120°F (49°C).
3. Turn on the faucet, and the fan will begin working. You will hear the ignition sound after a few seconds. The burner will ignite, and hot water will begin flowing. If the burner does not ignite successfully, the ignition sound will continue for a few seconds. If the burner still fails to ignite, turn off the faucet and wait for 10-20 seconds, then repeat the above procedures.

For first-time use and/or if the water heater has not been used for a long period, repeating the above procedures may be necessary due to accumulated air inside the gas pipe.

Water Temperature Setting

DANGER: Water Temperature Setting

Safety and energy conservation are important factors to consider when selecting the water temperature setting. Water temperatures above 125°F (52°C) can cause severe burns or death from scalding. The thermostat is set to its lowest temperature position when shipped from the factory. Be sure to read and follow the warnings outlined on the label pictured below.

DANGER: SCALDING RISK

There is a risk of scalding if the temperature is set too high. Households with small children, elderly persons, or individuals with disabilities may require a temperature setting of 120°F (49°C) or lower to prevent contact with hot water. Be sure to read and follow all warnings outlined in this manual and on the label located on the water heater. Mixing valves are available to reduce point-of-use water temperature by blending hot and cold water in branch water lines.

Routine Preventative Maintenance

DANGER: RELIEF VALVE OPERATION

Before manually operating the relief valve, ensure that no one will be exposed to the danger of hot water released by the valve. The water may be hot enough to cause scalding. The water should be directed into a suitable drain to prevent injury or property damage.

DANGER: HOT WATER SCALD POTENTIAL

Hotter water increases the potential for hot water scalds.

DANGER: MAINTENANCE

Failure to perform the recommended routine preventative maintenance can impair the proper operation of this water heater, potentially leading to carbon monoxide hazards, excessive hot water temperatures, and other dangerous conditions.

When properly maintained, your water heater will provide years of dependable, trouble-free service. It is recommended that periodic inspections of the burner, relief valve, water filter, and venting system be conducted by service personnel qualified in gas appliance repair. It is suggested that the user establish and follow a routine preventive maintenance program.

At least once a year, lift and release the lever handle on the pressure relief valve, located on the hot outlet piping of the water heater, to ensure the valve operates freely. Allow several gallons of water to flush through the discharge line to an open drain. Rapid closing of faucets or solenoid valves in automatic water-using appliances can cause a banging noise, often referred to as water hammer, in the water pipes. To minimize this issue, strategically placed risers or water hammer arresters in the plumbing system can be used. Additionally, inspect the area around the water heater to ensure a safe operating environment.

Keep the area around the appliance clear and free of combustible materials, gasoline, and other flammable vapors or liquids. Ensure the unit is undamaged. If there is any damage or denting, contact a qualified service technician to verify the unit's proper operation. Listen for any unusual sounds during the normal operation of the water heater. Inspect all piping for potential gas or water leaks. The air intake and cold water supply filters should be cleaned monthly. DO NOT operate the water heater if you suspect something is wrong with the unit. DO NOT allow children to operate or handle the unit.

How to Clean the Water Heater

1. Ensure the unit is turned OFF, and the electrical power supply is disconnected.
2. Turn OFF the water supply to the heater.
3. Unscrew the water filter and slide it out.
4. DO NOT tap the filter, as this may deform or damage it.
5. To remove severe dust, use a soft brush and rinse the filter under running water.
6. Reinsert the filter into the water heater and screw it back in securely.
7. Turn the electrical power supply and cold water supply ON to the water heater.
8. Use only mild soapy water for cleaning; other cleaners may damage the surface of the water heater.
9. DO NOT remove any labels, including the rating plate, while cleaning or servicing the unit.

Venting System Inspection

The venting system should be inspected annually to ensure all vent sections are secure and airtight. It is recommended that qualified service personnel familiar with Category III venting inspect the system. Check the vent connection joint sections with a solution of soapy water to confirm airtightness while the unit is operating. Bubbles around a joint connection indicate a seal leak. DO NOT operate the unit if the vent system shows signs of leaking exhaust. Ensure that the air intake and vent terminal are not blocked or contain debris.

Vacation and Extended Shutdown

If the water heater is to remain idle for an extended period, turn off the power and water supply to the appliance. The water heater and piping should be drained if they might be subjected to freezing temperatures. After a long shut-down period, have the water heater's operation and controls checked by qualified service personnel.

Not Equipped With Anti-freezing Protection

Draining Procedure

When the temperature falls below 32°F (0°C), water in your plumbing system or water heater can freeze and expand, potentially causing damage to the water heater. This damage is not covered under the manufacturer's warranty. If freezing conditions are anticipated, please drain the water heater as follows to help (but not guarantee) prevent freezing:

1. Shut off the main gas valve and power supply.
2. Shut off the inlet water valve.
3. Open all faucets.
4. Remove the drain valve and allow the water to drain for 3 minutes or until the unit is empty.
5. After ensuring all water has drained, replace the drain valve and close the faucets.
6. To put the water heater back into operation after draining, follow the steps below.
7. Reinstall the water filter and close the hot water outlet drain valve.
8. Open the water shut-off valve and close it again after ensuring that water comes out from the hot water faucets (this step is to remove air from the water lines).
9. Reconnect the breaker and turn the on/off switch to the ON position. Fully open the gas shut-off valve and the water shut-off valve.

NOTICE: The water heater will not operate properly unless the above procedure is followed correctly.

Error Code Guide

When an error code is displayed:

1. Close the hot water faucet and turn off the switch on the remote control.
2. Wait for about 5 minutes before turning the switch back on.
3. Open the hot water faucet.

If the error code persists:

1. Close the hot water faucet and turn off the switch on the remote control.
2. Take the proper action shown below and attempt to operate the appliance again.

If the error code still appears:

1. Turn off the hot water faucet and turn off the switch on the remote control.
2. Address the issue indicated by the error code and contact customer service at service@ranein.net for further assistance.