SUPER HIGH EFFICIENCY CONDENSING TANKLESS WATER HEATER USE AND CARE MANUAL With Installation Instructions for the Installer Condensing Direct Vent 199,900 Btu/hr, 180,000 Btu/hr, 157,000 Btu/hr and 120,000 Btu/hr Models ULTRA DESIGN Low NOx www. ahridirect or y. org CER TIFIED CERTIFIED ® WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result, causing death, personal injury, or property damage.
CONTENTS Safety Important Safety Information Safety Precautions ��������������������������������������������������������������� 2 – 8 Product Information Product Information �������������������������������������������������������������������� 8 Specifications........................................................................
IMPORTANT SAFETY INFORMATION Water Heater Venting Safety DANGER: WARNINGS: • Gasoline and other flammable liquids, materials, and vapors (including paint thinners, solvents, and adhesives) are extremely dangerous. DO NOT handle, use, or store gasoline or other flammable or combustible materials anywhere in the vicinity of a water heater or any other appliance. Be sure to read and follow the labels on the water heater, as well as the warnings printed in this manual.
IMPORTANT SAFETY INFORMATION Water Supply Safety ! DANGERS: DANGER Safety • WATER TEMPERATURE SETTINGS ! – Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s remote control. Water temperatures above 125°F (52°C) can cause death or severe burns from scalding. HOT Be sure to read and follow the warnings outlined on the pictured label. • There is a hot water scald potential if the water temperature is set BURN too high.
IMPORTANT SAFETY INFORMATION • N ever attempt to convert the water heater from natural gas to LP or vice versa. The water heater must only use the fuel type in accordance with the listing on the data plate—natural gas for natural gas units and LP for LP units. Any other fuel usage will result in death or serious personal injury from fire and/or explosion. This water heater is not certified for any other fuel type. • Both natural gas and propane (LP) have an odorant added to aid in detecting a gas leak.
IMPORTANT SAFETY INFORMATION Safety Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in unsafe operation of the water heater, resulting in death, personal injury, or property damage. Should you have any problems reading or following the instructions in this manual, STOP and get help from a qualified service technician.
IMPORTANT SAFETY INFORMATION Electrical Safety WARNINGS: • F or your safety, the information in this manual must be followed to minimize the risk of fire, explosion, or electric shock that can result in death, personal injury, and/or property damage. • Field wiring connections and electrical grounding must comply with local codes or, in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CAN/CSA C22.1, Part 1.
IMPORTANT SAFETY INFORMATION Safety General Installation and Maintenance Safety SAFETY PRECAUTIONS: WARNINGS: • T his water heater must be installed in accordance with these instructions, local codes, utility company requirements and/or in the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code (NFGC), ANSI Z223.1 and National Fire Protection Association, NFPA 54, or in Canada, CAN/CSA B149.
PRODUCT INFORMATION Specifications – Direct-Vent Models Front View Top View 17.65 in (448 mm) 5.54 in (141 mm) 25.7 in (637 mm) 23.58 in (600 mm) Product Information 3.31 in (84 mm) 5.89 in (150 mm) Bottom View 5.43 in (138 mm) 2.04 in (52 mm) 2.78 in (71 mm) 4.36 in 2.85 in (111 mm) ( 72 mm) 9.42 in (239 mm) 2.
PRODUCT INFORMATION Specifications The following product information can be found from the rating label on this water heater. English Rating Label Product Information A. Model Number B. Serial Number C. Data Bar Code D. Heater Type E. Installation Type F. Type of Gas G. Max. Inlet Gas Pressure H. Min. Inlet Gas Pressure J. Recovery Rating K. Max. BTU Input Rating L. Min. BTU Input Rating M. Manifold Gas Pressure N. Certification Stamp P. Alternate Approval Stamp Q.
PRODUCT INFORMATION The graphic below illustrates the pressure drop across the water heater. Please ensure ample water supply pressure is available to ensure the best performance.
PRODUCT INFORMATION General Descriptions Product Information Typical Direct-Vent Water Heater (Shown Without Venting) Built-In Display Power Supply Cord Water Filter Union Manual Gas Shut-Off Valve To Hot Water Faucet(s) Relief Valve Condensate Pipe* Sediment Trap To Suitable Drain / Neutralizer Service Valve Cold Water Supply Shut-Off Valve Cap Drain Valve To Suitable Drain 12 Union Manual Gas Supply Line Shut-Off Valve
PRODUCT INFORMATION General Descriptions Typical Outdoor Water Heater (Outdoor Conversion Kit Required - sold separately) Product Information WiFi Control & Harness Built-In Display Power Supply Cord Water Filter Union Manual Gas Shut-Off Valve To Hot Water Faucet(s) Relief Valve Condensate Pipe* Union Sediment Trap Service Valve Drain Valve Manual Gas Supply Line Shut-Off Valve Cold Water Supply Shut-Off Valve Cap To Suitable Drain/ Neutralizer To Suitable Drain 13
Installation INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR 14
INSTALLATION INSTRUCTIONS Standards Compliance In the United States where local codes are not available, use the latest edition of the American National Standard/National Fuel Gas Code. A copy of the Fuel Gas Code can be purchased from either the American Gas Association, 400 North Capitol Street Northwest, Washington, DC 20001, as ANSI standard Z223.
INSTALLATION INSTRUCTIONS General Choosing a Location (cont.) 0" min. (0 mm) 12" min. (300 mm) Sealing Plate 0" (0 mm) 1/2" min. (13 mm) 1/2" min. (13 mm) • Every vent or air intake pipe penetration of a floor or ceiling should be sealed. • Failure to install and properly vent the water heater to the outdoors as outlined on "Venting" can result in unsafe operation. 12" min. (300 mm) • Minimum water heater clearances from combustible and noncombustible construction are as follows: – 1/2 in. (1.
INSTALLATION INSTRUCTIONS Visually inspect the water heater for any possible damage. Verify that all included supplied parts are present as shown. Check the rating plate on the water heater to make sure the water heater was designed to be used with the supplied type of gas (natural or LP).
INSTALLATION INSTRUCTIONS General Water Heater Installation (cont.) NOTICE: The National Fuel Gas Code (NFGC) and CAN/CSA B149.1 mandate a manual gas shut-off valve. See NFGC/B149.1 for complete instructions. Local codes or plumbing authority requirements may vary from the instructions or diagrams provided and take precedence over these instructions.
INSTALLATION INSTRUCTIONS Mounting the Water Heater General CAUTION: Reinforcement of the wall is required where the wall is not strong enough to hold the water heater. Failure to do so could result in personal injury and/or property damage. The mounting location for the water heater should allow for easy access and operation. 3 Attach the mounting bracket to the wall and secure it by 4 screws and washers. Make sure it is level and that it can support the weight of the water heater.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater DANGER: Venting Failure to properly vent the water heater to the outdoors as outlined in this Venting section will result in death or serious personal injury. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, NEVER operate the water heater unless it is properly vented and has adequate air supply for proper operation as outlined in this Venting section.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater Appropriate dip switch adjustment shall be required to allow certain vent length. There are 4 vent configuration settings, A-0, A-1, A-2, and A-3 settings at 0-2000 ft (0-610 m) elevation. Vent Lengths Before starting the vent installation, careful planning should be given to the routing and termination of the vent pipes. The length of the vent pipes (inlet and outlet) should be kept to a minimum.
INSTALLATION INSTRUCTIONS Vent Length and High Altitude DIP switch Adjustments DIP Switch 2 "MAX" button ON DIP Switch 1 ON 1 2 3 4 1 2 3 4 "MIN" button Venting "ADJUST" button Control Board A-0 setting is default and factory setting. All dip switches are off. SECTION 3 Find DIP Switch 1 and 2 located in the top-right portion of the control board.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater The following table shows approximate input rate reduction. Actual input rate reduction may be different at each installation. Setting Min Vent Length Max Vent Length 3" 0% 5% 2" --- --- 3" 5% 10% 2" 5% 10% A-2 2" 15% 20% A-3 2" 20% 25% A-0 5 A-1 Replace the front cover panel on the water heater. Venting Vent Size 6 Turn on the gas and water to the water heater by opening the shut-off valves.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater Venting NOTICES: • It is recommended that the air intake pipe and exhaust pipe have a 1/4" per foot upward slope toward the outdoors. When the water heater is installed above 2000 ft. (610 m), the settings on the DIP switch located on the control board need to be changed per vent length and altitude. If these settings are not changed, the water heater may not function properly.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater In the Commonwealth of Massachusetts The Commonwealth of Massachusetts requires compliance with regulation 248 CMR 4.00 and 5.00 for installation of through-the-wall vented gas appliances as follows: (1) Revise NFPA–54 section 10.5.4.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater The following charts detail the minimal dimensional information needed to determine the proper location of the vent terminal for direct vent and outdoor tankless water heaters. Horizontal Vent Terminal Location for Other than Direct Vent/Outdoor Heater Venting Inside corner detail 15 ft Operable Fixed closed Operable Fixed closed Regulator vent outlet in the event no regulator is present, H and I can be disregarded.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater Horizontal Vent Termination Location for Direct-Vent Water Heater Inside corner detail Venting 15 ft Operable Fixed closed Operable Fixed closed Regulator vent outlet in the event no regulator is present, H and I can be disregarded. V VENT TERMINAL X AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED Canadian Installations A= C learance above grade, veranda, porch, deck or balcony.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Horizontal Vent Considerations – DO NOT terminate vent directly on brick or masonry WARNING: surfaces. Use rust-resistant, sheet-metal backing plate Venting Moisture in the flue gas will condense as it leaves the vent terminal. In cold weather this condensate can freeze on the exterior wall, under the eaves, and on surrounding objects. Some discoloration to the exterior of the building is to be expected.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Wall Plate (recommended) Venting Exhaust Vent Pipe 12” (30 cm) Minimum Air Intake Pipe Upward Slope to Termination Inspection Access Panel (Optional) Ceiling Inspection Access Panel (Optional) Horizontal Vent Installation WARNING: Danger of fire or bodily injury – Solvent cements and primers are highly flammable. Provide adequate ventilation and DO NOT assemble near heat source or open flame. DO NOT smoke.
INSTALLATION INSTRUCTIONS Horizontal Vent Installation (cont.) Fasteners will vary depending on the wall type. F or particle board or composite sheathing, use 4 hollow wall anchors. The anchors should be at least 1/8 in. (0.3 cm) in diameter and the appropriate length for the sheathing thickness. Venting F or plywood or solid wood sheathing or members, use 4 #10 x 1 1/4-in. wood screws.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Alternative Horizontal Vent Installations Alternative horizontal vent termination kits are commercially available. Please refer to the instruction sheet packaged with the kit for complete installation instructions.
INSTALLATION INSTRUCTIONS Horizontal Vent and Combustion, Air-Inlet Alternate Vent Riser Terminal Installation Venting Read these instructions thoroughly and make sure you understand all steps and procedures before proceeding with the installation. Determine the locations for the vent and combustion air-inlet terminals then make two (2) holes through the exterior wall to accommodate the vent and combustion air-inlet pipes.
INSTALLATION INSTRUCTIONS Vertical Vent Installation WARNING: Improper vent installation can result in death, personal injury, product damage, and/or poor performance. NOTICE: Free-standing vent pipe that penetrates a roof/ceiling requires another means of support from a second location. NOTICE: A, B Only Rheem-approved AND ULC S636 approved termination and parts must be used during installation.
INSTALLATION INSTRUCTIONS Vertical Vent Terminal Location Optional 12" Min. (300 mm) Air Intake Venting Vent Pipe Through Roof A, B The following chart with diagrams details the minimum dimensional information needed to determine the proper location of the vertical vent terminal for direct-vent indoor tankless water heaters: Location U.S. Installation Requirements1 Canadian Installation Requirements2 A = Minimum clearance above the roof level. 12 in. (30 cm) above roof level. 18 in. (45.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.
INSTALLATION INSTRUCTIONS Alternative Vertical Vent Termination Alternative vertical vent termination kits are commercially available. Please refer to the instruction sheet packaged with the kit for complete installation instructions. WARNING: Venting Under no circumstances should the exhaust pipe and the air intake pipe be connected together.
INSTALLATION INSTRUCTIONS Water Quality Install a water treatment device or water softener at the same time as the original installation of the water heater. Rheem offers a water treatment accessory that can be installed with the water heater. (See below). Flush the water heater’s heat exchanger regularly. Rheem offers a flush kit and isolation valves to help remove scale build up.
INSTALLATION INSTRUCTIONS Thermal Expansion Plumbing Determine if a check valve exists in the inlet water line. Check with your local water utility company. It may have been installed in the cold water line as a separate back flow preventer, or it may be part of a pressure reducing valve, water meter or water softener. A check valve located in the cold water inlet line can cause what is referred to as a “closed” water system.
INSTALLATION INSTRUCTIONS Water Supply Installation NOTICE: • Use only Teflon tape on all COLD and HOT water connections. • If the water flow resistance of a showerhead is too high, the burner in the water heater will fail to ignite. Keep all showerheads clean from debris that could cause additional pressure drop. • If using mixing valves on the outlet, choose one that prevents COLD water pressure from overcoming HOT water pressure.
INSTALLATION INSTRUCTIONS Water Piping Arrangement With Service Valve Kit Service valve kits can attach to all tankless water heater systems. All kits include two fullport isolation valves to be used in the COLD and HOT water lines. When installed, these valves allow one person full diagnostic testing and ease of flushing the system. Contact your distributor or place of purchase for availability and installation information.
INSTALLATION INSTRUCTIONS Hot and Cold Pipe Insulation Installation WARNINGS: • When pipe insulation is not rated for the appropriate weather conditions, install electric heat tracing or equivalent to prevent freezing of the pipes. • DO NOT insulate or block drain valve on the hot outlet fitting. • If pipes are allowed to freeze, the water heater and the pipes may malfunction or leak due to freezing water.
INSTALLATION INSTRUCTIONS Gas Supply Gas Supply System Gas Piping WARNING: DO NOT attempt to convert this water heater for use with a different type of gas other than the type shown on the rating plate. Doing so could result in death, personal injury, explosion or fire, product damage, and/or poor operating conditions or performance.
INSTALLATION INSTRUCTIONS Gas Supply Determining the required pipe size. Final Considerations The gas system is designed to operate at a certain maximum pressure drop. A pressure drop greater than what is permissible can cause operational issues with the gas appliances. The National Fuel Gas Code (NFPA 54, ANSI Z223.1 2012) allows for three pressure drop levels, a 0.3 inch W.C., (see table 2); a 0.5 inch W.C., (see table 3) and a 3.0 inch W.C., (see table 4) pressure drop for natural gas. Only a 0.
INSTALLATION INSTRUCTIONS Gas Supply This is an example, in US, refer to current National Fuel Gas Code, NFPA 54 for correct pipe sizing chart, and in Canada, refer to current Natural Gas and Propane Installation Code CAN/CSA B149.1. Table 2 - Pipe-Sizing - Natural Gas Table 3 - Pipe-Sizing - Natural Gas Schedule 40 Metallic Pipe (Black Iron) Inlet System Pressure: Less than 2 PSI (55 inches W.C.) Allowable Pressure Drop: 0.3 inches W.C. Specific Gravity : 0.
INSTALLATION INSTRUCTIONS Gas Supply Gas Supply Installation 1 Install the manual gas appliance shut-off valve to the gas connection at the water heater. 4 Using the proper-size piping, fittings, and components, build the gas supply line to the water heater. NOTICE: The gas supply line should be a minimum of 3/4-in. (1.9-cm) black steel pipe or other approved gas piping material.
INSTALLATION INSTRUCTIONS Gas Supply Leak Testing WARNING: Never use an open flame to test for gas leaks, because death, personal injury, and/or property damage can result. Gas Supply The water heater and its gas connections MUST be leaktested at normal operating pressures before the unit is placed in operation. These tests should also include all factory connections. • Turn on the gas shut-off valve(s) to the water heater.
INSTALLATION INSTRUCTIONS Gas Supply High-Altitude Installation For installations above 2000 ft. (610 m) elevation, contact a qualified service technician to make the proper altitude adjustments. See “Vent Length and High-Altitude DIP Switch Adjustments” for additional information. WARNING: DO NOT install this water heater at elevations above 2000 ft. (610 m) without the proper adjustments.
COLOR CODE CODE COULEUR GND W BK R：RED，ROUGE W：WHITE，BLANC W：WHITE， BR：BROWN，MARRON BK：BLACK，NOIR BL：BLUE，BLEU GY：GRAY，GRIS G：GREEN，VERT O：ORANGE，ORANGE Y：YELLOW，JAUNE G／Y：GREEN／YELLOW， VERT／JAUNE P：PINK，ROSE PU：PURPLE，VIOLET AC 120V Ｗ Ｗ Ｗ Ｗ IGNITER ALLUMEUR Ｗ Ｗ ＩＧ Ｗ Ｗ ＦＭ ５ ６ FOR INDOOR,DIRECT-VENT MODEL ONLY POUR MODÈLE INTÉRIEUR À VENT DIRECT SEULEMENT BK G／YorG W ＧＮＤ G／Y UNIQUEMENT POUR MODÈLE DE CONDENSAGE FOR CONDENSING MODEL ONLY ANTI-FROST HEATER CHAUFFAGE ANTI-GIVRE FAN
INSTALLATION INSTRUCTIONS Insulation Blankets In general, insulation blankets for external use on gas water heaters are not necessary. The purpose of an insulation blanket is to reduce the standby heat loss from the water heater’s storage tank. Since these water heaters DO NOT store water, they eliminate the need for the insulation blanket. ! WARNING: Never cover the air inlet, flue outlet, or operating and warning labels attached to the water heater.
INSTALLATION INSTRUCTIONS Installation Checklist A. Water Heater Location Indoor water heaters must be installed indoors. Water supply has sufficient pressure. Outdoor water heaters must be installed outdoors. Air has been purged from the water heater and the piping. Close to area of ventilation termination (indoor models). Protected from freezing temperatures. Proper clearance from combustible material observed. Sufficient fresh air supply for proper operation of water heater.
USING YOUR WATER HEATER Activating the Water Heater WARNING: Before operating this water heater, be sure to read and follow the instructions on the following label, all labels on the water heater, and the “Important Safety Information” section in this manual. Failure to do so can result in unsafe operating conditions that can result in death, personal injury, property damage, and/or product damage.
USING YOUR WATER HEATER Activating the Water Heater Operating Instructions Read, understand, and follow the safety information listed on the operating label and in the “Important Safety Information” section in this manual. 4 Turn on all electric power to the water heater. The remote control must be powered on prior to operating the water heater. WARNING: 1 Disconnect all electric power to the water heater. DO NOT attempt to light the burner by hand.
USING YOUR WATER HEATER Safety Precautions WARNING: • F lammable vapors can be drawn by air currents from surrounding areas to the water heater. Vapors can ignite causing death, personal injury, or product damage. • DO NOT store or use flammable or combustible materials (gasoline, paint thinner, adhesives, solvents, newspapers, rags, mops, etc.) in the vicinity of the water heater or any other gas appliance.
USING YOUR WATER HEATER Maximum water temperature occurs while the water heater burner is ON. To determine the water temperature: Turn on the hot water faucet and place a thermometer in the water stream. NOTICE: The temperature set point by default cannot be increase above 120°F (49°C). To achieve temperatures above 120°F (49°C), refer page 56 in this Use & Care manual. The water heater may not operate with a small water flow. Increase the water flow and recheck.
USING YOUR WATER HEATER Setting the Water Temperature WARNING: Improper adjustment, alteration, service, or maintenance can result in death, personal injury, property damage, and/ or product damage.
USING YOUR WATER HEATER Setting the Water Temperature If need to disable the ability to set above 120°F, please refer the following steps: 4 While "120" is shown on LED display, press and hold UP button for 5 seconds. "140" is shown on the LED display. 1 Press DOWN button until "100" appears. 2 Press and hold DOWN button for 2 seconds. While holding the DOWN button, press the UP button. Release both buttons. ! WiFi Setup Start/Adjust PRIORITY 56 1.
USING YOUR WATER HEATER Recirculation Pump Control Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedence over these instructions. Recirculation Mode Your tankless water heater has the ability to control an external recirculation pump which recirculates the water in the plumbing system to provide hot water more quickly when a faucet is opened.
USING YOUR WATER HEATER Recirculation Pump Control Tankless Water Heater Expansion Tank Cold Water to Tankless Hot Water to Fixtures (Copper Pipe) Circulation Pump with built in check valve Hot Water Loop Recirculation Pump Dedicated Return Line 58 (Copper Pipe) Wire to Connect Pump to heater (8 ft long) Optional Shut-Off Valve Shut-Off Valve Check Valve Cold Water Supply
USING YOUR WATER HEATER Recirculation Pump Control Typical Recirculation Pump Installation with Comfort Valve Kit CAUTION: Comfort Valve Kit can be used for applications that DO NOT have a dedicated return line. Comfort Valve should be installed at the farthest fixture. Warm water may be present in cold water fixtures and cold water line during pump operation and a short period thereafter, when using cold water line as a return line. Refer to page 57 for maximum allowable equivalent pipe length.
USING YOUR WATER HEATER Recirculation Pump Control Installation Control Board Blue connector BK Add 4 Amp Fuse PUMP 1 W Disconnect all electric power to the water heater. Cut blue connector and splice wires. 5 To connect to the pump, cut the blue connector, splice the wires, and add a 4 amp fuse to the hot wire of the pump. Rheem recirculation pump kit includes a molex connector and a 4 amp fuse so splicing wires is not required. 2 Remove the front cover panel on the water heater.
USING YOUR WATER HEATER Recirculation Pump Control Recirculation Operation Timer mode DIP 2 DIP 1 ON The water heater is turned ON when the recirculation pump starts operation. The water heater produces hot water at the setting temperature. When the return water temperature reaches approximately 15°F (8°F) below the setting temperature, the water heater and the pump will turn OFF. The cycle will restart at the approximate time based on the temperature thermistor reading.
USING YOUR WATER HEATER Recirculation Pump Control Recirculation Operation – On-Demand modeIf the On-Demand mode is used, the water heater needs wifi capability. If the water heater is NOT a WiFi model, you cannot use the On-Demand mode. To enter On Demand Mode • Ensure Switch 1 on DIP 2 and switch 4 on DIP 1 are off. • In less than one minute. • Turn Switch 1 on DIP 2 on-off-on-off. • Press the Adjust Button • The PCB LED will flash one time The unit is now in on demand mode.
USING YOUR WATER HEATER Water Saving Control Water saving control is optional and is inactive as default. To activate this control, appropriate procedures must be followed. Water saving control can reduce waste water at initiation of hot water demand by reducing flow until outlet hot water reaches set temperature. It is recommended to turn ON this control if the water heater is installed in a drought area or anywhere water conservation is needed.
USING YOUR WATER HEATER Water Saving Control ON 1 2 3 4 ON 1 2 3 4 7 After setting the activation of this control, change the third switch on “DIP 1” to the OFF position (DOWN). Be sure to reapply any venting/altitude DIP switch settings. 8 Replace the front cover panel and turn the remote ON. Turn the remote on before turning the water supply on. 9 Start/Adjust Turn on the gas and water to the water heater by opening the shut-off valves.
CARING FOR YOUR WATER HEATER Water Heater Inspections Venting System (Direct Vent Only) Condensate Collector The venting system should be inspected annually to ensure all of the vent sections are secure and airtight. Qualified service personnel are familiar with vent system inspections and may be contacted for advice. • Condensate is known to be acidic; refer to federal, state (provincial), and local codes for proper handling and discharge methods.
CARING FOR YOUR WATER HEATER Burner It is recommended the burner be annually inspected by a qualified service technician. DANGER: Shock Hazard – Removing the front cover panel exposes you to live electricity. Electric shock will cause death or serious personal injury. 3 Burner Sight Glass While the water heater is operating, inspect the main burner flames through the burner sight glass. The flames should be blue when the main burner is firing.
CARING FOR YOUR WATER HEATER Care and Cleaning DANGER: Shock Hazard – Make certain power to the water heater is OFF before removing protective cover for any reason. Electric shock will cause death or serious personal injury. WARNING: Combustible materials, such as clothing, cleaning materials, or flammable liquids, must not be placed against or next to the water heater. Fire or explosion can occur causing death, personal injury, and/or product damage. NOTICE: The air intake requires a minimum of 12 in.
CARING FOR YOUR WATER HEATER CAUTION: DO NOT tap or force the filter during removal. This can deform and/or damage the filter. 4 Unscrew the water filter from the base of the cold water inlet line and carefully slide it out of the line. 5 Care Instructions Clean the water filter under running water. To remove severe sediment and dirt, use a soft brush. 68 CAUTION: DO NOT overtighten the water filter. Overtightening can deform and/or damage the filter.
CARING FOR YOUR WATER HEATER Preventive Maintenance WARNING: Failure to perform routine preventive maintenance can prevent the water heater from operating properly. Improper operation can cause carbon monoxide dangers, excessive water temperatures, and other potentially hazardous conditions resulting in death, personal injury, and/or product damage. NOTICE: If the pressure relief valve on the hot water heater discharges periodically, this may indicate a problem in the water system.
CARING FOR YOUR WATER HEATER Draining the Water Heater WARNING: Failure to follow these draining instructions can cause serious personal injury from scalding and/or product damage. Cold Water Supply Shut-Off Valve 5 Close the water shut-off valve. 1 Water Drain Valve Water Filter Turn off the water heater by pressing the POWER ON/OFF button on the LED display. 6 Find the water drain valve and the water filter located at bottom of the water heater. 2 Close the gas shut-off valve(s).
CARING FOR YOUR WATER HEATER Draining the Water Heater CAUTION: Even when drained properly, a small amount of water will remain in the water heater. In cold weather conditions, this water can freeze. If this happens, allow the defrost protection on the water heater at least 60 minutes to melt the frozen water. The water heater will not work properly until this water is thawed. To put the water heater back in service: 4 Open all hot water faucets and let run until all air has been purged from the lines.
CARING FOR YOUR WATER HEATER Standard Drain Method Service isolator valve kits may be purchased from the manufacturer, distributor, or place of purchase. The kits include two full-port isolation valves to be used in the inlet and outlet water lines. These kits provide a means for full diagnostic testing and ease of system flushing and draining.
CARING FOR YOUR WATER HEATER Vacation and Extended Shutdown WARNING: Failure to drain the water heater can cause serious personal injury from scalding and/or product damage. If the water heater is to remain idle for an extended period of time, the power and water to the heater should be turned off. The water heater and piping should be drained if they might be subjected to freezing temperatures. When drained, some water may remain in the unit. See “Freeze Protection” section on this Use and Care Manual.
CARING FOR YOUR WATER HEATER Troubleshooting Chart Problem Water not hot enough. 1 Possible Cause Solution 1. The temperature may be set too low. 1. Increase the temperature setting at 2. The gas valve is not completely opened. 2. Check and completely open the gas valve. 3. Gas supply pressure is low. 3. Contact your gas utility company or gas 4. Bleed-over in one of the hot water 4. Contact a dealer or a qualified service 1. Temperature is set too high. 1.
CARING FOR YOUR WATER HEATER Service Error Code Chart Your water heater has an electronic diagnostic system built into it. When the water heater finds a problem, it displays an error code in the LED display on the remote control. The chart on the next page lists the error codes along with their possible problem and solution. Using this chart may help you diagnose and/or fix a problem you may be experiencing. Please refer to this chart before calling for service assistance.
CARING FOR YOUR WATER HEATER Error Code Possible Cause Solution 1L Water heater has buildup of lime deposits. Contact a dealer or qualified service technician. 11 The gas shut-off valve is not fully opened. Check shut-off valve and open completely. Gas service has been interrupted. Contact your gas utility company. LP gas is running low (LP models only). Refill or replace your LP gas container. 14 Water heater is overheating. Contact a dealer or qualified service technician.
CARING FOR YOUR WATER HEATER Maintenance Notice Maintenance notice is an optional control and is inactive as default. Maintenance notice reminds users of water heater maintenance activities such as flushing the heat exchanger or replacing the water treatment filter (if applicable) in order to maximize the life of your tankless water heater. Contact technical service department listed on page 76 of this use and care manual if you are not familiar with these maintenance activities.
CARING FOR YOUR WATER HEATER Maintenance Notice ERROR CODE 88 CLEARING IMPORTANT It is highly recommended to perform water heater maintenance activities such as flushing the heat exchanger and/or replacing the water treatment filter (if applicable) before clearing this error code. After these maintenance activities are completed, follow the steps below to clear error code "88". 1 Turn on the remote control. 4 Press and hold the DOWN and UP adjustment button for 5 to 10 seconds.
PARTS REPLACEMENT Parts Ordering WARNING: 1. The model and serial number of the water heater from the rating plate. For your safety, DO NOT attempt to disassemble, repair, or replace any portion of this unit. Refer all repairs, service, and/or adjustments to qualified service personnel. 2. Specify the gas type (natural or LP) as marked on the rating plate. 3. Parts description (as shown below) and number of parts desired.
LIMITED WARRANTY For the RHEEM®, RUUD®, Richmond®, Paloma®, and EcoSmart® Residential Tankless Gas Water Heaters. GENERAL This Limited Warranty is only available to the original owner of the water heater at the original installation location. This Limited Warranty is not transferable. Rheem Sales Company, Inc.
LABOR, SHIPPING, AND PROCESSING COSTS For one (1) year after the Effective Date, Rheem will cover reasonable labor costs necessary to repair or replace a tankless water heater or component part that Rheem determines to be defective and covered by this Limited Warranty. The warranty service must be performed by a contractor that is licensed, state qualified, and trained to install and service Rheem's tankless water heaters.
NOTES 82
