WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result, causing death, personal injury, or property damage. For Your Safety! • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. To do so may result in an explosion or fire. • Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
CONTENTS Safety Important Safety Information Safety Precautions ������������������������������������������������������������� 2–8 Product Information Product Information ��������������������������������������������������������������� 8 Specifications...................................................................
IMPORTANT SAFETY INFORMATION Water Heater Venting Safety DANGER DANGER: Failure to install and properly vent 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.
IMPORTANT SAFETY INFORMATION Water Supply Safety DANGERS: CAUTIONS: 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. Be sure to read and follow the HOT warnings outlined on the pictured label. • There is a hot water scald potential if the water temperature is set too high.
IMPORTANT SAFETY INFORMATION Natural Gas and Liquefied Petroleum Safety DANGERS: • The installation of gas piping must conform to local utility company requirements and/or in the absence of local codes, use the latest edition of National Fuel Gas Code (NFGC), ANSI Z223.1/NFPA 54, or CAN/CSA B149.1, Natural Gas and Propane Installation Code. • If inlet gas pressure is out of allowable range [4.0” w.c. (1.0kPa) – 10.5” w.c. (2.6kPa)] for Natural Gas, or [8.0” w.c. (2.0kPa) – 13.0” w.c. (3.
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: • For 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 General Installation and Maintenance Safety WARNINGS: Product Information Safety • This 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 131/2" (343 mm) 6 3 /4 " 63/4" (172 mm) (172 mm) 131/2" (343 mm) 53/16" (131 mm) 53/16" (131 mm) 29 / " (757 mm) 13 16 25 / " (651 mm) 5 8 13 15/16" (354 mm) 25 / " (651 mm) 5 8 51/2" (140 mm) 13 15/16" (354 mm) 19/16" (40 mm) 19/16" (40 mm) Product Information 29 / " (757 mm) 13 16 13/4" (45 mm) 13/4" (45 mm) 91/2" (241 mm) 91/2" (241 mm) 51/2" (140 mm) 33/8" 33/8" (8655mm) (86 mm) /8" " mm) 43/16(143 43/16" (106 mm) (106 mm) 55/8"
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 General Descriptions Typical Direct-Vent Water Heater (Venting Required) Condensate Collector Product Information Remote Control With Power Switch To Drain: Dispose of condensate in accordance with local codes.
PRODUCT INFORMATION Typical Outdoor Water Heater (No Venting Required) This water heater is for OUTDOOR installation only. DANGER: DO NOT install this water heater indoors or in a confined area. It is designed for outdoor installation only. Any other type of installation will result in death or serious personal injury.
USING YOUR WATER HEATER Safety Precautions WARNING: Flammable 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, newspapers, rags, mops, etc.) in the vicinity of the water heater or any other gas appliance.
USING YOUR WATER HEATER Setting the Water Temperature (cont.) Maximum water temperature occurs while the water heater burner is on. To determine the water temperature: NOTICES: Turn on the hot water faucet and place a thermometer in the water stream. Water Heater Facts NOTICE: Water temperature at the faucet may Use Instructions vary depending on the season and the length of pipe from the water heater. The remote control temperature range is between 100°F (38°C) and 120°F (49°C).
CARING FOR YOUR WATER HEATER Water Heater Inspections Venting System (Direct Vent Only) Condensate Trap (Direct Vent Only) The venting system should be inspected annually by a qualified service technician to ensure all of the vent sections are secure and airtight. DO NOT operate without the condensate trap connected to the vent and routed to the proper drain. It could cause the system to malfunction or fail. WARNING: DO NOT operate the water heater if the vent system shows signs of leaking exhaust.
CARING FOR YOUR WATER HEATER Water Heater Inspections (cont.) Burner Burner Sight Glass It is recommended that the burner be inspected annually 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 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.
CARING FOR YOUR WATER HEATER Care and Cleaning (cont.) 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. 18 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. Properly maintaining your water heater will ensure dependable, trouble-free service.
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 Turn off the water heater by pressing the POWER ON/ OFF button on the control panel. 6 2 Using a suitable container to catch the water, remove the water filter from the base of the cold water inlet line. Close the gas shut-off valve(s).
CARING FOR YOUR 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 30 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 Draining the Water Heater (cont.) Preferred Drain Method 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. It is highly recommended to install isolator valve kits because these kits provide a means for full diagnostic testing and ease of system flushing.
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. See “Freeze Protection” section on page 22.
CARING FOR YOUR WATER HEATER Troubleshooting Chart (cont.) Problem Water not hot enough. 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 following chart 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 Service Error Code Chart (cont.) Error Code Possible Cause Solution Water heater has buildup of lime deposits. Contact a dealer or qualified service technician. Air intake or vent exhaust opening may be blocked. Remove any blockage. (Air intake requires 12 in. [30 cm] of clearance.) The vent pipes on the vent termination may not be connected properly. Contact a dealer or qualified service technician. The gas shut-off valve is not fully opened.
Installation INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR
INSTALLATION INSTRUCTIONS General Standards Compliance This water heater must be installed in accordance with these instructions, local codes, and utility company requirements. 20001, as ANSI standard Z223.1, or National Fire Protection Association, 1 Batterymarch Park, MA 02269 as NFPA 54. In the United States where local codes are not available, use the latest edition of the American National Standard/ National Fuel Gas Code.
INSTALLATION INSTRUCTIONS Choosing a Location (cont.) 12" min. (300 mm) Fire Stop Plate (as required) 0" (0 mm) 12" min. (300 mm) • Every vent pipe penetration of a floor or ceiling that is not in a fire-rated shaft requires a fire stop plate. • Failure to install and properly vent the water heater to the outdoors as outlined on pages 34 through 45 can result in unsafe operation. General 0" min. (0 mm) 1/2" min. (13 mm) 12" min.
INSTALLATION INSTRUCTIONS General Product Inspection • Visually inspect the water heater for any possible damage. •C heck 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). • Verify that all included supplied parts are present as shown.
INSTALLATION INSTRUCTIONS Water Heater Installation (cont.) General 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 General Water Heater Installation (cont.) Typical Installation of Outdoor Water Heater (No Venting Required) This water heater is for OUTDOOR installation only. WARNING: DO NOT install this water heater indoors or in a confined area. It is designed for outdoor installation only. Any other type of installation can result in death, personal injury, and/or damage to the product or property.
INSTALLATION INSTRUCTIONS General Mounting the Water Heater CAUTION: Reinforcement of the wall is required in case the wall is not strong enough to hold the water heater. Failure to do so could result in personal injury and/or product damage. The mounting location for the water heater should allow for easy access and operation. 3 Position the upper mounting bracket and partially install the center mounting screw. The clearance between the screw head and the wall should be about 1/8 in. (0.3 cm).
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater The water heater must be installed with 3-in./5-in. (7.6-cm/12.7-cm) diameter UL-approved Category III Coaxial Stainless Steel appliance vent pipe or water heater manufacturer-approved concentric vent pipe. DANGER: Venting Failure to install and properly vent the water heater to the outdoors as outlined in this Venting section will result in death or serious personal injury.
INSTALLATION INSTRUCTIONS In the Commonwealth of Massachusetts a. In the event that the side-wall, horizontally vented, gas-fueled equipment is installed in a crawl space or an attic, the hardwired carbon monoxide detector with alarm and battery backup may be installed on the next adjacent floor level. b.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Venting 1/4" Per Foot Downward Slope (recommended) 90˚ Elbow Fire Stop Vent Pipe Inspection Access Panel (Optional) Recommended Vent Lengths Number of 90° Elbows (bends) Maximum Length of Straight Pipe 1 39 ft. (12.0 m) 2 37 ft. 6 in. (11.5 m) 3 36 ft. (11.0 m) 4 34 ft. 6 in. (10.5 m) 5 33 ft. (10.0 m) 6 31 ft. 6 in. (9.
INSTALLATION INSTRUCTIONS Appliance Vent Adapter CAUTION: Metal Fab Inc. standard concentric vent pipe can be installed into the water heater collar without an appliance vent adapter. However, other Rheem-approved vent manufacturer's pipe cannot be installed without a UL-approved Category III Stainless Steel appliance concentric vent adapter. NOTICE: To install the appliance vent adapter, please follow the appliance vent adapter manufacturer's instructions.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.
INSTALLATION INSTRUCTIONS Horizontal Vent Terminal Location (cont.) The following chart details the minimal dimensional information needed to determine the proper location of the vent§terminal for direct vent and outdoor tankless water heaters. See corresponding letter reference in the illustration on page 38. A = Clearance above grade, veranda, porch, deck, or balcony. B = Clearance to window or door that may be opened. U.S. Installation Requirements1 12 in. (30 cm) • 6 in.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Horizontal Vent Considerations WARNING: 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. However, improper location or installation can result in severe damage to the structure or exterior finish of the building.
INSTALLATION INSTRUCTIONS Horizontal Vent Installation WARNING: 1 CAUTION: Use UL-approved Category III Stainless Steel vent material only. No other vent material is permitted for use with this appliance. Apply high temperature silicone sealant or silicone/ latex caulk around the vent section. Completely seal where it passes through the wall plate and where it is attached to the structure. This will provide a weather seal for the system, so it must be a good seal.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Horizontal Vent Installation (cont.) Venting Using a thick bead of high temperature silicone, seal the overlapping area of the outer 5-in. (12.7-cm) pipe. Typical Horizontal Termination with 1/4 In. Per Foot of DOWNWARD Slope 1/4" Per Foot Downward Slope 2' max.* (610 mm) 3 Attach required vent sections between the water heater collar and the horizontal vent termination.
INSTALLATION INSTRUCTIONS Vertical Vent Installation WARNING: NOTICES: • Only Rheem-approved termination and parts should be used during installation. • Install a fire stop plate at every penetration of a floor or ceiling, whenever the vent is not running through a firerated shaft. • Maintain the recommended air space clearance to combustible materials and building insulation. Venting Follow the vent manufacturer’s installation instructions since design might vary from manufacturer to manufacturer.
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Venting Vertical Vent Terminal Location Vent Pipe Through Roof A, B, C, D 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 A = Minimum clearance above the roof level. 12 in. (30.5 cm) above roof level. 18 in. (45.7 cm) above roof level.
INSTALLATION INSTRUCTIONS Standard Vertical Vent Termination Vertical Termination Adapter Venting Air Intake Storm Collar Adjustable Roof Flashing 3" to 5" Concentric Pipe Support Clamp 1/4" Per Foot Upward Slope Fire Stop Fire Stop Support Hanger CAUTION: The condensate collector must be used with vertical vent installation. Condensate Trap To Drain: Dispose of condensate in accordance to local codes.
INSTALLATION INSTRUCTIONS Water Supply Thermal Expansion CAUTION: This water heater MUST ONLY Plumbing be used with the following water supply conditions to prevent product damage and operation failure. • Clean, potable water free of corrosive chemicals, sand, dirt, or other contaminates. • Inlet water temperatures above 32°F (0°C), but not exceeding 120°F (49°C). • DO NOT reverse the HOT and COLD water connections. • DO NOT connect this heater to water lines previously used for space heating.
INSTALLATION INSTRUCTIONS Water Supply Connections (cont.) To ensure proper operation of the water heater, follow these water pressure guidelines. • Operation of the water heater requires a minimum water pressure of 14 psi (97 kPa) and a minimum activation water flow rate of 0.4 gpm (1.5 lpm). • Continuous operation of the water heater requires a minimum water flow rate of 0.25 gpm (1.01 lpm). • Water pressure of 40 psi (276 kPa) is required to achieve maximum flow rate.
INSTALLATION INSTRUCTIONS Water Supply (cont.) Water Supply Installation (cont.) • Be sure to connect the COLD water inlet and the HOT water outlet as shown on the water heater. If reversed, the water heater will not function. • The flow rate of HOT water may vary when more than two faucets (appliances, fixtures, etc.) are being used simultaneously. • The pipes MUST be completely drainable.
INSTALLATION INSTRUCTIONS Relief Valve A new pressure-relief valve, complying with the Standard for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, must be installed at the HOT water outlet connection of the water heater during installation. Local codes shall govern the installation of any relief valves.
INSTALLATION INSTRUCTIONS Water Supply (cont.) 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 (cont.) Gas Piping Pipe-Sizing Procedure – Example The gas supply system must be properly sized to ensure the proper operation of this tankless water heater as well as all the gas appliances on the system. Failure to ensure the gas system, (meter, regulators, and piping) are properly sized could result in improper operation of this or other gas appliances.
Final Considerations If this water heater is replacing an existing water heater, it is important to verify the capacity of the gas system. Check the capacity of the meter/regulator, and verify the pipe lengths and sizes. An improperly sized gas system will cause operational issues with this water heater. Other appliances on the gas system may be affected as well. Flexible Gas Connectors may be used however the BTU capacity of the connector must be checked.
INSTALLATION INSTRUCTIONS Gas Supply (cont.) Gas Supply Installation 4 1 Install the manual gas appliance shut-off valve to the gas connection at the water heater. The shut-off is supplied with the water heater. 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 Leak Testing WARNING: Never use an open flame to test for gas leaks, because death, personal injury, and/or property damage can result. 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. Gas Supply Turn on the gas shut-off valve(s) to the water heater. Use a soapy water solution to test for leaks at all the connections and fittings.
INSTALLATION INSTRUCTIONS Gas Supply (cont.) High-Altitude Installation The water heater is certified for installations up to 3,280 ft. (1,000 m) above sea level. The input rating of this water heater is based on sea level operation. At higher elevations, the actual input rate may be lower than the value listed on the rating label. NOTICE: WARNING: • DO NOT install this water heater at elevations above 3,280 ft. (1,000 m) without the proper adjustments.
INSTALLATION INSTRUCTIONS Electrical Wiring (cont.
INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Remote Control Selection and Location WARNING: Review the following considerations before determining the location of the remote control(s): 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, in the U.S., or Canadian Electrical Code, CAN/CSA C22.1, Part 1, in Canada.
INSTALLATION INSTRUCTIONS Remote Control Installation WARNING: 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, in the U.S., or Canadian Electrical Code, CAN/CSA C22.1, Part 1, in Canada. NOTICES: • Extension cable can be any Type–T 18 AWG wire similar to a thermostat wire and need not be polarity-sensitive. • It is not recommended to have wiring exposed.
INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Remote Control Installation (cont.) Connecting the Remote Control to the Water Heater: 4 Firmly tighten the terminal screws by hand. 1 Ensure that the power to the water heater has been disconnected. 5 Remote Control Connection Cover 2 Secure the remote control extension cable on the hook located on the side of the remote control connection base. Loosen the one screw located on the remote control connection cover.
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 C. Water Supply/Relief Valve 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). Water connections tight and free from leaks. Protected from freezing temperatures. Proper clearance from combustible material observed.
INSTALLATION INSTRUCTIONS Piping for Space Heaters Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedence over these instructions.
INSTALLATION INSTRUCTIONS 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.
INSTALLATION INSTRUCTIONS Operating Instructions Read, understand, and follow the safety information listed on the operating label on page 63 and in the “Important Safety Information” section on pages 2-8 in this manual. 4 Turn on all electric power to the water heater. The water heater burner will automatically light when there is a demand for hot water. 1 Disconnect all electric power to the water heater. WARNING: DO NOT attempt to light the burner by hand.
INSTALLATION INSTRUCTIONS The contents on pages 65 through 68 should only be performed by qualified service personnel. Setting the Water Temperature WARNING: Improper adjustment, alteration, service, or maintenance can result in death, personal injury, property damage, and/or product damage. Maximum Temperature Adjustment by the Main Remote Control (UMC–117) DANGER: Water temperatures above 125°F (52°C) will result in death and/or severe burns from scalding.
INSTALLATION INSTRUCTIONS Setting the Water Temperature (cont.) 4 While “120” is blinking, press the UP and DOWN adjustment buttons at the same time. “140” will appear without blinking. 5 Press the UP or DOWN adjustment button to set the desired temperature. 3 Press the DOWN adjustment button repeatedly until 100°F (38°C) or 85°F (29°C) shows in the LED display. Hold the DOWN button until the number on the display starts to blink.
INSTALLATION INSTRUCTIONS Setting the Water Temperature (cont.) Minimum Temperature Adjustment by the Main Remote Control (UMC–117, USC1–117, and USC2–117) Residential water heater temperatures can be adjusted down to 85°F (29°C), when required. To change the temperature settings down to 85°F (29°C): 3 Press the DOWN adjustment button repeatedly until 100°F (38°C) shows in the LED display. NOTICE: LED display only shows °F. 1 4 Turn on the remote control.
INSTALLATION INSTRUCTIONS High-Altitude DIP Switch Adjustments (cont.) Dip switch adjustment 3,280 feet (1,000 m) thru 6,560 feet (2,000 m) 5If altitude is above 3,280 ft. (1,000 m) and below 6,560 ft. (2,000 m), change the third switch on “DIP 2” to the ON position (UP). 2 Remove the front cover panel on the water heater. 6 Dip switch adjustment 6,560 feet (2,000 m) thru 9,840 feet (3,000 m) If altitude is above 6,560 ft. (2,000 m) and below 9,840 ft.
PARTS REPLACEMENT Parts Ordering WARNING: For your safety, DO NOT 1. The model and serial number of the water heater from the rating plate. attempt to disassemble, repair, or replace any portion of this unit. Refer all repairs, service, and/or adjustments to qualified service personnel. Address all parts orders to the distributor or store where the water heater was purchased. All parts orders should include: 2. Specify the gas type (natural or LP) as marked on the rating plate. 3.
PARTS REPLACEMENT Outdoor Gas Components 3 13 4 6 8 7 5 Parts 11 70 8a 1 14 9 10 Ref # Description 1 Control Board 2 Gas Valve Assembly 3 Burner Assembly 4 Igniter Coil 5 Blower Motor 6 Burner Manifold 7 Gas Inlet Connector 3/4" 8 Water Control Valve 8a Water Bypass Valve 9 Water Inlet Connector 3/4" 10 Inlet Water Filter 11 Hot Water Outlet Connector 3/4" 13 Front Cover 14 Remote Control Terminal Block 2
LIMITED WARRANTY For the RHEEM®, RUUD®, Richmond®, Paloma®, and Sure Comfort® Residential Tankless Gas Water Heaters. EXCLUSIVE WARRANTY – LIMITATION OF LIABILITY This Limited Warranty is the only Warranty for this unit given by the Water Heater Division of Rheem Manufacturing Company. No one is authorized to make any other warranties on behalf of Rheem.
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 it determines to be defective in material and/or manufacture by a contractor which is licensed, state qualified, and trained for Rheem's tankless water heaters.
