Table of Contents
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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.
What to Do If
You Smell Gas
• Do not try to light any
appliance.
• Do not touch any electrical
switch; do not use any
phone in your building.
• Immediately call your gas
supplier from a neighbor's
phone. Follow the gas supplier's
instructions.
• If you cannot reach your
gas supplier, call the fire
department.
• Do not return to your home until
authorized by the gas supplier
or fire department.
Do not destroy manual. Please read
carefully and keep in a safe place
for future reference.
WARNING:
This water heater is not suitable
for use in manufactured (mobile)
homes.
AP18161-1 (11/16)
95% CONDENSING
TANKLESS
WATER HEATER
USE AND CARE MANUAL
With Installation Instructions
for the Installer
Condensing Direct Vent and Outdoor
199,900 Btu/hr, 180,000 Btu/hr and
157,000 Btu/hr Models
CERTIFIED
®
R
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Table of Contents
Related Manuals for Rheem RTGH-95XLP-2
Summary of Contents for Rheem RTGH-95XLP-2
- Page 1 WARNING: 95% CONDENSING If the information in these instructions is not followed exactly, a fire or explosion may TANKLESS result, causing death, personal injury, or property damage. WATER HEATER For Your Safety! • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or USE AND CARE MANUAL any other appliance.
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Page 2: Table Of Contents
CONTENTS Important Safety Information Installation Instructions Standards Compliance ������������������������������������������������������������������ 28 Safety Precautions ��������������������������������������������������������������������� 2–8 Choosing a Location �����������������������������������������������������������������28, 29 Product Information Product Inspection ������������������������������������������������������������������������� 30 Product Information ������������������������������������������������������������������������ 8 Water Heater Installation ��������������������������������������������������������� 30–33 Specifications ��������������������������������������������������������������������������� 9, 10 Venting ������������������������������������������������������������������������������������� 34–46 General Descriptions ���������������������������������������������������������������... -
Page 3: Important Safety Information
IMPORTANT SAFETY INFORMATION Water Heater Venting Safety DANGER: D A N G E R • Failure to install and properly vent the water heater to the outdoors as outlined in the “Venting” section of the Installation Instructions in this manual will result in death from fire, explosion, or asphyxiation from carbon monoxide. - Page 4 IMPORTANT SAFETY INFORMATION Water Supply Safety DANGERS: CAUTIONS: D A N G E R • WATER TEMPERATURE SETTINGS • This water heater must only be used – Safety and energy conservation with the following water supply system are factors to be considered when conditions: selecting the water temperature –...
- Page 5 IMPORTANT SAFETY INFORMATION Natural Gas and Liquefied Petroleum Safety DANGERS: WARNINGS: • Never attempt to convert the water heater from natural • The installation of gas piping must comply with local gas to LP or vice versa. The water heater must only use utility company requirements and/or in the absence of the fuel type in accordance with listing on data plate—...
- Page 6 IMPORTANT SAFETY INFORMATION 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.
- Page 7 IMPORTANT SAFETY INFORMATION Electrical Safety CAUTIONS: DANGER: • Label all wires prior to disconnecting for service. Wiring • Shock Hazard – Make sure the electrical power to the errors can cause dangerous and improper operation. water heater is off to avoid electric shock that will Verify correct operation after servicing.
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Page 8: Safety Precautions
IMPORTANT SAFETY INFORMATION General Installation and Maintenance Safety WARNINGS: SAFETY PRECAUTIONS: • This water heater must be installed in accordance Read this manual entirely before installing and/or operating with these instructions, local codes, utility company the water heater. requirements and/or in the absence of local codes, Use this water heater only for its intended purpose as use the latest edition of the American National described in this Use and Care Manual. - Page 9 PRODUCT INFORMATION Specifications – Direct-Vent Models " (454 mm) " (140 mm) " (86 mm) " (159 mm) " (473 mm) " " (772 mm) (702 mm) " " (140 mm) (59 mm) " (105 mm) " (98 mm) " "...
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Page 10: Specifications
PRODUCT INFORMATION Specifications English Rating Label The following product informa- tion can be found from the rating label on this water heater. A. Model Number B. Serial Number C. Data Bar Code D. Heater Type E. Installation Type F. Type of Gas G. -
Page 11: General Descriptions
PRODUCT INFORMATION General Descriptions Typical Direct-Vent Water Heater (Shown Without Venting) Remote Control With Power Switch Water Filter Union Power Supply Cord Manual Gas Manual Gas To Hot Water Supply Line Shut-O Valve Relief Faucet(s) Shut-O Valve Relief (Supplied) Valve Valve Union Condensate... - Page 12 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 space. It is designed for outdoor installation only. Any other type of installation will result in death or serious personal injury.
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Page 13: Using Your Water Heater
USING YOUR WATER HEATER Safety Precautions WARNING: • DO turn off manual gas shut-off valve if water heater has been subjected to overheating, fire, flood, • Flammable vapors can be drawn by air currents physical damage, or if the gas supply fails to shut from surrounding areas to the water heater. - Page 14 USING YOUR WATER HEATER Setting the Water Temperature (cont.) NOTICE: Maximum water temperature occurs while the water heater burner is ON. To determine the water The temperature set point on the standard remote control temperature: cannot be increased above 112°F (44°C) when a hot water faucet is in the open position.
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Page 15: Caring For Your Water Heater
CARING FOR YOUR WATER HEATER Water Heater Inspections Venting System (Direct Vent Only) Condensate Collector CAUTIONS: The venting system should be inspected annually to ensure all of the vent sections are secure and airtight. • Condensate is known to be acidic; refer to federal, state Qualified service personnel are familiar with vent (provincial), and local codes for proper handling and system inspections and may be contacted for advice. - Page 16 CARING FOR YOUR WATER HEATER Water Heater Inspections (cont.) Burner It is recommended the burner be annually inspected by a qualified service technician. DANGER: Burner Sight Shock Hazard – Removing the front cover panel Glass exposes you to live electricity. Electric shock will cause death or serious personal injury.
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Page 17: Care And Cleaning
CARING FOR YOUR WATER HEATER Care and Cleaning DANGER: NOTICE: Shock Hazard – Make certain power to the water The air intake requires a minimum of 12 in. (30 cm) heater is OFF before removing protective cover of clearance between the air intake opening and for any reason. - Page 18 CARING FOR YOUR WATER HEATER Care and Cleaning (cont.) CAUTION: CAUTION: DO NOT tap or force the filter during removal. This can DO NOT overtighten the water filter. Overtightening can deform and/or damage the filter. deform and/or damage the filter. Unscrew the water filter from the base of the cold water Replace the filter in the cold water inlet line and tighten inlet line and carefully slide it out of the line.
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Page 19: Preventive Maintenance
CARING FOR YOUR WATER HEATER Preventive Maintenance WARNING: NOTICE: Failure to perform routine preventive maintenance can If the pressure relief valve on the hot water heater prevent the water heater from operating properly. Improper discharges periodically, this may indicate a problem in the operation can cause carbon monoxide dangers, excessive water system. -
Page 20: Draining The Water Heater
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-O Valve Close the water shut-off valve. Turn off the water heater by pressing the POWER ON/ OFF button on the remote control. - Page 21 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.
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Page 22: Freeze Protection
CARING FOR YOUR WATER HEATER Draining the Water Heater (cont.) Standard Drain Method Service isolator valve kits may be purchased from the manufacturer, distributor, or place of purchase. The kits Pressure Relief include two full-port isolation valves to be used in the Valve inlet and outlet water lines. -
Page 23: Vacation And Extended Shutdown
CARING FOR YOUR WATER HEATER Vacation and Extended Shutdown WARNING: The water heater and piping should be drained if they might be subjected to freezing temperatures. See Failure to drain the water heater can cause serious “Freeze Protection” section on page 22. personal injury from scalding and/or product damage. - Page 24 CARING FOR YOUR WATER HEATER Troubleshooting Chart (cont.) Problem Possible Cause Solution Water not hot enough. The temperature may be set too low. Increase the temperature setting at the remote control. The gas valve is not completely opened. Check and completely open the gas valve. Gas supply pressure is low.
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Page 25: Service Error Code Chart
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 page 26 lists the error codes along with their possible problem and solution. -
Page 26: If You Need Service
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 techni- cian. Air intake or vent exhaust opening may be Remove any blockage. (Air intake requires 12 blocked. -
Page 27: Installation Instructions
INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR... -
Page 28: Standards Compliance
INSTALLATION INSTRUCTIONS Standards Compliance This water heater must be installed in accordance with Batterymarch Park, MA 02269 as NFPA 54. these instructions, local codes, and utility company In Canada, use the latest edition of the CAN/CSA requirements. B149.1 Natural Gas and Propane Installation Code and In the United States where local codes are not the Canadian Electrical Code, CAN/CSA C22.1, Part 1. -
Page 29: Choosing A Location
INSTALLATION INSTRUCTIONS Choosing a Location (cont.) 0" min. 12" min. (0 mm) (300 mm) Sealing Plate 0" (0 mm) 12" min. 1/2" min. (300 mm) (13 mm) • Every vent or air intake pipe penetration of a floor or ceiling should be sealed. •... -
Page 30: Product Inspection
INSTALLATION INSTRUCTIONS Product Inspection Visually inspect the water heater for any possible Verify that all included supplied parts are present as damage. 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). - Page 31 INSTALLATION INSTRUCTIONS 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. Typical Installation of Direct-Vent Water Heater Wall Plate...
- Page 32 INSTALLATION INSTRUCTIONS Water Heater Installation (cont.) Typical Installation of WARNING: Outdoor Water Heater DO NOT install this water heater indoors or in a confined space. It is designed for outdoor installation only. Any other type of (No Venting Required) installation can result in death, personal injury, and/or damage to the product or property.
- Page 33 INSTALLATION INSTRUCTIONS Mounting the Water Heater 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.
- Page 34 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater DANGER: Acceptable materials or equivalent: InnoFlue® PP Failure to properly vent the water heater to the outdoors as outlined in this Venting section will result in death or PVC (Schedule 40, ASTM D-1785) serious personal injury.
- Page 35 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater Minimum Vent Length: Preexisting Venting Notes: If the water heater is being installed as a replacement Minimum Length Minimum Length Number of for an existing water heater, a thorough inspection of of 2" or 3" Straight of 4"...
- Page 36 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) In the Commonwealth of Massachusetts 2. APPROVED CARBON MONOXIDE DETECTORS. Each The Commonwealth of Massachusetts requires carbon monoxide detector as required in accordance with the compliance with regulation 248 CMR 4.00 and 5.00 for above provisions shall comply with NFPA 720 and be ANSI/ installation of through-the-wall vented gas appliances UL 2034-listed and IAS-certified.
- Page 37 INSTALLATION INSTRUCTIONS Horizontal Vent Terminal Location Outside Walls Fixed Closed Fixed Operable Closed Operable Vent Terminal Air Supply Inlet Area Where Terminal is Not Permitted Inside Wall...
- Page 38 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (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 37. Location U.S.
- Page 39 INSTALLATION INSTRUCTIONS Horizontal Vent Considerations WARNING: – DO NOT terminate vent directly on brick or masonry surfaces. Use rust-resistant, sheet-metal backing plate Moisture in the flue gas will condense as it leaves the vent behind the vent. terminal. In cold weather this condensate can freeze on the exterior wall, under the eaves, and on surrounding objects.
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Page 40: Venting
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Wall Plate (recommended) Exhaust Vent Pipe Condensate Air Intake Pipe 12" Condensate Trap (300 mm) Drain Upward Slope to Termination To Suitable Drain Approximately 4” recommended Inspection Ceiling Inspection Access Panel Access Panel (Optional) (Optional) Horizontal Vent Installation... - Page 41 INSTALLATION INSTRUCTIONS Horizontal Vent Installation (cont.) Fasteners will vary depending on the wall type. For 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.
- Page 42 INSTALLATION INSTRUCTIONS For information about termination kits, refer to "If You Need Service" on page 26, "Call for Assistance" for the telephone number to speak to a Customer Service Representative. Venting for Direct-Vent Water Heater (cont.) Alternative Horizontal Vent Installations Alternative horizontal vent termination kits are commercially available.
- Page 43 NOTICE: A, B Only Rheem-approved AND ULC S636 approved termination and parts must be used during installation. Maintain the recommended air space clearance to combustible materials and building insulation.
- Page 44 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Vertical Vent Terminal Location Optional 12" Min. Air Intake (300 mm) 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.
- Page 45 INSTALLATION INSTRUCTIONS Standard Vertical Vent Termination Optional Adjustable Roof Flashing Support Clamp Condensate Trap* Upward Slope Air Intake Exhaust Vent Support Hanger Pipe Pipe Condensate Drain Suitable Drain To Suitable Drain *Note: Condensate trap should be installed as close as practical to the water heater. A similar condensate trap is allowed as long as it prevents rain, condensate or any other liquid from entering into the water heater.
- Page 46 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) 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: Under no circumstances should the exhaust pipe and the air intake pipe be connected together. Minimum Clearance 18 inches above roof Concentric Vent Termination Adjustable Roof Flashing...
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Page 47: Water Quality/Supply
Flush the water heater’s heat exchanger regularly. failures resulting from water conditions that are not in Rheem offers a flush kit and isolation valves to help accordance with the specifications in the table below remove scale build up. (See below) - Page 48 INSTALLATION INSTRUCTIONS Thermal Expansion Determine if a check valve exists in the inlet water line. increase can quickly reach the safety setting of the Check with your local water utility company. It may have relief valve, causing it to operate during each heating been installed in the cold water line as a separate back cycle.
- Page 49 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.
- Page 50 INSTALLATION INSTRUCTIONS Water Piping Arrangement With Service Valve Kit Service valve kits can attach to all tankless water heater systems. All kits include two full-port isolation Pressure Pressure Relief Valve Relief Valve valves to be used in the COLD and HOT water lines. When installed, these valves allow one person full Cold Water Cold Water...
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Page 51: Condensate
INSTALLATION INSTRUCTIONS Hot and Cold Pipe Insulation Installation WARNINGS: For increased energy efficiency, use pipe insulation as shown in the diagram. Insulate the pipes all the way • When pipe insulation is not rated for the appropriate to the top. DO NOT cover any drain or pressure-relief weather conditions, install electric heat tracing or valve(s). -
Page 52: Gas Supply
INSTALLATION INSTRUCTIONS Gas Supply Gas Supply System Gas Piping WARNING: Pipe-Sizing Procedure – The gas supply system must be properly sized to ensure the proper operation DO NOT attempt to convert this water heater for use with of this tankless water heater as well as all the gas a different type of gas other than the type shown on the appliances on the system. - Page 53 INSTALLATION INSTRUCTIONS Gas Supply (cont.) Determining the required pipe size. Final Considerations The gas system is designed to operate at a certain If this water heater is replacing an existing water heater, maximum pressure drop. A pressure drop greater it is important to verify the capacity of the gas system. than what is permissible can cause operational issues Check the capacity of the meter/regulator, and verify with the gas appliances.
- Page 54 INSTALLATION INSTRUCTIONS Gas Supply (cont.) 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) Schedule 40 Metallic Pipe (Black Iron)
- Page 55 INSTALLATION INSTRUCTIONS Gas Supply (cont.) Gas Supply Installation Install the manual gas appliance shut-off valve to the Using the proper-size piping, fittings, and components, gas connection at the water heater. The shut-off is build the gas supply line to the water heater. supplied with the water heater.
- Page 56 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 leak- tested at normal operating pressures before the unit is placed in operation.
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Page 57: Electrical Wiring
DO NOT install this water heater at elevations above 2000 ft. (610 m) without the proper adjustments. Please contact your installer, local gas supplier, place of purchase, or the Rheem Customer Service phone number listed on page 26 in the “Call for Assistance” section. Electrical Wiring DANGER: use power strips or multiple outlet adapters. - Page 58 INSTALLATION INSTRUCTIONS Wiring Diagram...
- Page 59 INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Remote Control Selection and Location Review the following considerations before determining the WARNING: location of the remote control(s): Field wiring connections and electrical grounding must • DO NOT install any remote control comply with local codes or, in the absence of local codes, outdoors or where it can come in contact with the latest edition of the National Electrical Code, ANSI/ with water.
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Page 60: Remote Control Installation
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, or in Canada, Canadian Electrical Code, CAN/CSA C22.1, Part 1. - Page 61 INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Connecting the Remote Control to the Water Heater: Firmly tighten the terminal screws by hand. Ensure that the power to the water heater has been disconnected. Remote Control Remote Control Connection Cover Connection Cover Secure the remote control extension cable on the hook located on the side of the remote control connection base.
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Page 62: Insulation Blankets
INSTALLATION INSTRUCTIONS Insulation Blankets In general, insulation blankets for external use on gas The manufacturer’s warranty does not cover any water heaters are not necessary. The purpose of an damage or defect caused by insulation, insulation insulation blanket is to reduce the standby heat loss attachment, or use of any type of energy-saving or from the water heater’s storage tank. -
Page 63: Installation Checklist
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. Air has been purged from the water heater and Outdoor water heaters must be installed outdoors. the piping. -
Page 64: Piping For Space Heaters
INSTALLATION INSTRUCTIONS Piping for Space Heaters Local codes or plumbing authority requirements may vary drinking water. from the instructions or diagrams provided in this manual If this water heater is installed in an application intended and take precedence over these instructions. to supply domestic hot water needs and hot water for space heating purposes, DO NOT connect the Combination Potable and Space... -
Page 65: Recirculation Control
Energy Saver and Performance, which recirculate the water in the plumbing system to provide hot water more A control board can be damaged if amperage exceeds 2.0 quickly when a faucet is opened. Rheem offers a fully amps. packaged recirculation pump kit. See the Parts and Pump Size Accessories catalog for more information. - Page 66 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.
- Page 67 INSTALLATION INSTRUCTIONS Recirculation Control (cont.) Turn On the remote control. The pump and water heater will turn on to raise recirculation loop temperature. Recirculation Operation The water heater is turned ON when the As set recirculation pump starts operation. The water heater from factory produces hot water at the setting temperature.
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Page 68: Activating The Water Heater
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. - Page 69 INSTALLATION INSTRUCTIONS Activating the Water Heater Operating Instructions Read, understand, and follow the safety information listed on the operating label on page 68 and in the “Important Safety Information” section on pages 2-8 in this manual. Turn on all electric power to the water heater. The water heater burner will automatically light when there is a demand for hot water.
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Page 70: Setting The Water Temperature
INSTALLATION INSTRUCTIONS The contents on pages 70 through 77 should only be performed by qualified service personnel. Setting the Water Temperature WARNING: Priority Indicator Improper adjustment, alteration, service, or maintenance In-Use can result in death, personal injury, property damage, and/ Indicator or product damage. - Page 71 INSTALLATION INSTRUCTIONS Setting the Water Temperature (cont.) While “140” is blinking, press the UP and DOWN Press the DOWN adjustment button repeatedly until adjustment buttons at the same time. “140” will appear 100°F (38°C) or 85°F (29°C) shows in the LED display. without blinking.
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Page 72: High-Altitude Dip Switch Adjustments
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. Press the DOWN adjustment button repeatedly until To change the temperature settings down to 100°F (38°C) shows in the LED display. - Page 73 INSTALLATION INSTRUCTIONS High-Altitude DIP Switch Adjustments (cont.) If altitude is above 2000 ft. (610 m) and below 5,400 ft. (1650 m), change the third switch on “DIP 2” to the ON position (UP). Remove the front cover panel on the water heater. If altitude is above 5,400 ft.
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Page 74: Water Saving Control Option
INSTALLATION INSTRUCTIONS 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. - Page 75 INSTALLATION INSTRUCTIONS Water Saving Control (cont.) Remove the front cover panel on the water heater. Dip Switches Control Board Find DIP Switch 1 located in the top-right portion at the control board. The switch labeled “DIP 1” is the top switch.
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Page 76: Maintenance Notice Option
INSTALLATION INSTRUCTIONS 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 As set water heater. - Page 77 INSTALLATION INSTRUCTIONS Maintenance Notice (cont.) Turn on the gas and water to the water heater by opening the shut off valves. Replace the front cover panel. Turn on the remote control. Error Code 88 Clearing When a tankless water heater has a certain number of hours of combustion, error code “88”...
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Page 78: Parts Replacement
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 2. Specify the gas type (natural or LP) as marked on replace any portion of this unit. - Page 79 PARTS REPLACEMENT Parts Ordering (cont.) Outdoor Gas Components Ref # Description Control Board Gas Valve Burner Assembly Blower Motor Burner Manifold Gas Inlet Connector 3/4" Water Control Valve Water Inlet Connector 3/4" Inlet Water Filter Hot Outlet Connector Remote Control Terminal Block Neutralization kit Front Cover...
- Page 80 NOTES...
- Page 81 NOTES...
- Page 82 NOTES...
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Page 83: Warranty Information
Rheem Sales Company, Inc. (Rheem) warrants this tankless gas water heater, and its component parts, to be free from defects in materials and manufacture, under normal use and service, for the Applicable Warranty Period specified below. At its option, Rheem will repair or replace the defective water heater, or defective component part(s), in accordance with the terms of this Limited Warranty, if it fails in normal use and service during the Applicable Warranty Period. - Page 84 Rheem or Ruud water heater from which the defective component part was removed; and the date the defective component part failed. You may also be required to provide documentary proof of the date of installation of the Rheem or Ruud water heater from which the defective part was removed –...