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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.
Direct Vent
Outdoor
Models
Models
Rheem/EcoSense
Rheem/EcoSense
RTGH-95DV*
RTGH-95X*
RTGH-84V*
RTGH-84X*
ECOH200DV*
ECOH200X*
ECOH160DV*
ECOH160X*
Paloma/Wai Wela
Paloma/Wai Wela
PHH-32RDV*
PHH-32ROF*
PHH-25RDV*
PHH-25ROF*
Ruud
Ruud
RUTGH-95X*
RUTGH-95DV*
RUTGH-84X*
RUTGH-84DV*
Richmond
Richmond
RMTGH95X*
RMTGH95DV*
RMTGH84X*
RMTGH84DV*
*All models available for natural gas (N) or
propane gas (P) usage.
Printed in USA
AP15896-1(11/10)
94% CONDENSING
TANKLESS
WATER HEATER
USE AND CARE MANUAL
With Installation Instructions
for the Installer
Water Heaters for Other Than
Recreational Vehicle Installation Only
®
CERTIFIED
R
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Summary of Contents for Rheem RTGH-95DV
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Page 1: For Your Safety
Do not destroy manual. Please read carefully and keep in a safe place for future reference. Direct Vent Outdoor Models Models Rheem/EcoSense Rheem/EcoSense RTGH-95DV* RTGH-95X* RTGH-84V* RTGH-84X* ECOH200DV* ECOH200X* ECOH160DV* ECOH160X* Paloma/Wai Wela Paloma/Wai Wela PHH-32RDV*... -
Page 2: Table Of Contents
CONTENTS Important Safety Information If You Need Service Safety Precautions ..........2–8 Call for Assistance ............ 26 Product Information Installation Instructions Product Information ............ 8 Standards Compliance ..........28 Specifications ............9, 10 Choosing a Location ..........28, 29 General Descriptions ..........11, 12 Product Inspection ............ -
Page 3: Important Safety Information
IMPORTANT SAFETY INFORMATION Water Heater Venting Safety DANGER: Failure to install and properly D A N G E R 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 • This water heater must only be used • WATER TEMPERATURE with the following water supply system SETTINGS – Safety and energy conditions: conservation are factors to be –...
- Page 5 IMPORTANT SAFETY INFORMATION Natural Gas and Liquefied Petroleum Safety DANGERS: WARNINGS: • Never attempt to convert the water heater from • The installation of gas piping must conform to local natural gas to LP. The water heater should only utility company requirements and/or in the absence use the fuel type in accordance with listing on data of local codes, use the latest edition of National Fuel plate—natural gas for natural gas units and LP for...
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Page 6: For Your Safety Read Before Operating
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: Shock Hazard – Make sure the electrical power to the water heater is off to avoid • Label all wires prior to disconnecting for service. electric shock that will result in death or serious Wiring errors can cause dangerous and improper personal injury.
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Page 8: Safety Precautions
IMPORTANT SAFETY INFORMATION General Installation and Maintenance Safety WARNINGS: SAFETY PRECAUTIONS: • Read this manual entirely before installing and/or • This water heater must be installed in accordance operating the water heater. with these instructions, local codes, utility company requirements and/or in the absence of •... - 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 MANUFACTURER 157k BTU MODELS 199.9k BTU MODELS Rheem RTGH-84DV* and RTGH-84X* RTGH-95DV* and RTGH-95X* EcoSense ECOH160DV* and ECOH160X* ECOH200DV* and ECOH200X* Paloma/Wai Wela PHH-25RDV* and PHH-25ROF* PHH-32RDV* and PHH-32ROF* Ruud RUTGH-84DV* and RUTGH-84X* RUTGH-95DV* and RUTGH-95X* Richmond... -
Page 11: General Descriptions
PRODUCT INFORMATION General Descriptions Typical Direct-Vent Water Heater (Venting Required) Remote Control With Power Switch Water Filter Power Supply Cord Manual Gas Manual Gas Service To Hot Water Supply Line Shut-Off Valve Valve Faucet(s) Shut-Off Valve Relief Relief Union 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 an enclosure. It is designed for outdoor installation only. Any other type of installation will result in death or serious personal injury. Flue Terminal Remote Control...
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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 Flammable vapors can heater has been subjected to overheating, fire, be drawn by air currents from surrounding areas to flood, physical damage, or if the gas supply fails the water heater. - Page 14 USING YOUR WATER HEATER Setting the Water Temperature (cont.) NOTICES: Maximum water temperature occurs while the water heater burner is on. To determine the water • The temperature set point on the standard temperature: remote control 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 Condensate Collector CAUTIONS: (Direct Vent Only) • Condensate is known to be acidic; refer to The venting system should be inspected annually federal, state (provincial), and local codes for to ensure all of the vent sections are secure and proper handling and discharge methods. - Page 16 CARING FOR YOUR WATER HEATER Water Heater Inspections (cont.) Burner Visually inspect the main burner annually. DANGER: Shock Hazard – Burner Removing the front cover panel exposes you to Sight Glass live electricity. Electric shock will cause death or serious personal injury. While the water heater is operating, inspect the main burner flames through the burner sight glass.
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Page 17: Care And Cleaning
CARING FOR YOUR WATER HEATER Care and Cleaning NOTICE: DANGER: The air intake requires a Shock Hazard – Make minimum of 12 in. (30 cm) of clearance between certain power to the water heater is OFF before the air intake opening and any obstruction. removing protective cover for any reason. - Page 18 CARING FOR YOUR WATER HEATER Care and Cleaning (cont.) CAUTION: CAUTION: Do not tap or force Do not overtighten the the filter during removal. This can deform and/or water filter. Overtightening can deform and/or damage the filter. damage the filter. Unscrew the water filter from the base of the Replace the filter in the cold water inlet line and cold water inlet line and carefully slide it out...
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Page 19: Preventive Maintenance
CARING FOR YOUR WATER HEATER Preventive Maintenance NOTICE: WARNING: If the pressure relief valve on Failure to perform the hot water heater discharges periodically, this routine preventive maintenance can prevent the may indicate a problem in the water system. water heater from operating properly. Improper Contact the water supplier or a plumbing operation can cause carbon monoxide dangers, contractor to correct the problem. -
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-Off Valve Close the water shut-off valve. Turn off the water heater by pressing the POWER ON/OFF button on the control panel. - 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. Hot Water The kits include two full-port isolation valves to Service Valve Cold Water be used in the 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 Failure to drain the they might be subjected to freezing temperatures. water heater can cause serious personal injury See “Freeze Protection” section on page 22. 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 Check and completely open the gas opened.
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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 following chart lists the error codes along with their possible problem and solution. -
Page 26: If You Need Service
(page 8) and all qualified service companies If your problem has not been solved to your that have worked on the water heater. satisfaction, contact the Rheem National Original installation date. (See page 8.) Service Department at the following address:... -
Page 27: Installation Instructions
INSTALLATION INSTRUCTIONS FOR THE CONTRACTOR... -
Page 28: Standards Compliance
INSTALLATION INSTRUCTIONS Standards Compliance This water heater must be installed in North Capitol Street Northwest, Washington, accordance with these instructions, local DC 20001, as ANSI standard Z223.1, or National codes, and utility company requirements. 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 In Canada, use the latest edition of the CSA... -
Page 29: Choosing A Location
INSTALLATION INSTRUCTIONS Choosing a Location (cont.) 0" min. 12" min. (0 mm) (300 mm) Sealed 0" (0 mm) 12" min. 1/2" min. (300 mm) (13 mm) • Every penetration of a floor or ceiling should be sealed. • Failure to install and properly vent the water heater to the outdoors as outlined on pages 33 12"... -
Page 30: Product Inspection
INSTALLATION INSTRUCTIONS Product Inspection • Visually inspect the water heater for any possible • Verify that all included supplied parts are present damage. 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). - Page 31 INSTALLATION INSTRUCTIONS Water Heater Installation (cont.) NOTICE: The National Fuel Gas Code (NFGC) and 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.
- Page 32 INSTALLATION INSTRUCTIONS Water Heater Installation (cont.) Typical Installation of WARNING: DO NOT install this water Outdoor Water Heater heater indoors or in an enclosure. It is designed for outdoor installation only. Any other type of installation (No Venting Required) can result in death, personal injury, and/or damage to the product or property.
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Page 33: Mounting The Water Heater
INSTALLATION INSTRUCTIONS 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. -
Page 34: Venting
INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater DANGER: in Canada) Failure to properly vent The fittings, other than the VENT TERMINAL, the water heater to the outdoors as outlined in should be equivalent to the following: this Venting section will result in death or serious PVC (Schedule 40 DWV, ASTM D-2665) personal injury. - Page 35 INSTALLATION INSTRUCTIONS NOTICE: NOTICES: To use 2-inch vent pipe, a reducing adapter or bushing will be required. • It is recommended that the air intake and Depending on the size of pipe that is chosen for exhaust pipes have a 1/4" per foot downward venting the water heater, it might be necessary slope toward the end of the pipes.
- Page 36 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) In the Commonwealth of 3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the Massachusetts building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for The Commonwealth of Massachusetts requires the horizontally vented, gas-fueled heating appliance...
- 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 Interior 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 at left. U.S.
- Page 39 INSTALLATION INSTRUCTIONS Horizontal Vent Considerations WARNING: Moisture in the flue gas will condense as it leaves the vent terminal. In cold weather this condensate can freeze on the exterior Rising moisture will collect under eaves. Caulk wall, under the eaves, and on surrounding objects. If sof t vent is too close, Some discoloration to the exterior of the building block off and install new...
- Page 40 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Wall Plate Downward Slope 12" Exhaust Vent Pipe Air Intake Pipe (300 mm) Inspection Ceiling Inspection Access Panel Access Panel (Optional) (Optional) Horizontal Vent Installation Cleaner-Primer and Medium-Body Solvent Cement WARNING: Danger of fire or bodily All joints in vent piping must be properly sealed, injury –...
- 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 Customer Service Representative. 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.
- Page 43 Refer to “Vertical Vent Terminal Location” on page 44 for clearance NOTICES: requirements. • Only Rheem-approved termination and parts should be used during installation. • Maintain the recommended air space clearance A, B, C, D to combustible materials and building insulation.
- Page 44 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Vertical Vent Terminal Location Optional 12" Min. (300 mm) 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: U.S.
- Page 45 INSTALLATION INSTRUCTIONS Standard Vertical Vent Termination Optional Adjustable Roof Flashing Support Clamp Upward Slope Air Intake Exhaust Vent Support Hanger Pipe Pipe Condensate Drain...
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Page 46: Venting
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. Minimum Clearance Above Anticipated Snow Level Adjustable Roof Flashing Support Clamp Upward Slope... -
Page 47: Water Supply
INSTALLATION INSTRUCTIONS Water Supply Thermal Expansion CAUTION: This water heater MUST ONLY be used with the following water A thermal expansion tank will be required if the supply conditions to prevent product damage and water heater is installed in a recirculation system. operation failure. - Page 48 INSTALLATION INSTRUCTIONS Water Supply Water Supply Connections (cont.) To ensure proper operation of the water heater, • To supply HOT water to upper floors, additional follow these water pressure guidelines. water pressure will be required (0.44 psi [3 kPa] per foot of height). Calculate the distance •...
- Page 49 INSTALLATION INSTRUCTIONS Water Supply Installation (cont.) NOTICES: • 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.
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Page 50: Relief Valve
INSTALLATION INSTRUCTIONS Water Supply (cont.) Relief Valve For safe operation of the water heater, be sure that: A new pressure-relief valve, complying with the • The pressure rating of the relief valve must not Standard for Relief Valves and Automatic Gas exceed 150 psi (1,034 kPa) or the maximum Shut-Off Devices for Hot Water Supply Systems, working pressure of the water heater. -
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 • When pipe insulation is not rated for the the way to the top. DO NOT cover any drain or appropriate weather conditions, install electric pressure-relief valve(s). -
Page 52: Gas Supply
INSTALLATION INSTRUCTIONS Gas Supply Gas Supply Connections • If flexible connectors are used, the minimum inside diameter must be 3/4" or greater and the WARNING: rated capacity of the connector must be equal Do not attempt to to or greater than the BTU capacity of the water convert this water heater for use with a different heater. -
Page 53: Gas Piping
INSTALLATION INSTRUCTIONS Gas Piping 2. Use the table for your gas type to find the pipe size required for your cubic feet per hour of gas Pipe-Sizing Procedure – Example and your pipe length. The gas supply must be capable of handling the Example: The heating value of propane gas for entire gas load at the location. -
Page 54: Gas Supply Installation
INSTALLATION INSTRUCTIONS Gas Supply (cont.) Gas Supply Installation Using the proper-size piping, fittings, and components, build the gas supply line to the water heater. Install the manual gas appliance shut-off valve NOTICE: to the gas connection at the water heater. The The gas supply line should shut-off is supplied with the water heater. - Page 55 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. These tests should also include all factory connections.
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Page 56: Electrical Wiring
3,280 ft. (1,000 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: •... - Page 57 INSTALLATION INSTRUCTIONS Wiring Diagram...
- Page 58 INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Remote Control Selection and Review the following considerations before determining the location of the remote Location control(s): • Do not install any remote control WARNING: outdoors or where it can come in Field wiring connections contact with water.
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Page 59: 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, in the U.S., or Canadian Electrical Code, CSA C22.1, Part 1, in Canada. - Page 60 INSTALLATION INSTRUCTIONS Electrical Wiring (cont.) Connecting the Remote Control to the Water Heater: Firmly tighten the terminal screws by hand. Secure the remote control extension cable on Ensure that the power to the water heater has been disconnected. Remote Control Remote Control Connection Cover Connection Cover...
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Page 61: Insulation Blankets
INSTALLATION INSTRUCTIONS Insulation Blankets In general, insulation blankets for external use The manufacturer’s warranty does not cover any on gas water heaters are not necessary. The damage or defect caused by insulation, insulation purpose of an insulation blanket is to reduce the attachment, or use of any type of energy-saving standby heat loss from the water heater’s storage or other unapproved devices (unless authorized... -
Page 62: Installation Checklist
INSTALLATION INSTRUCTIONS Installation Checklist A. Water Heater Location C. Water Supply/Relief Valve Water supply has sufficient pressure. Indoor water heaters must be installed indoors. Air has been purged from the water heater Outdoor water heaters must be installed and the piping. outdoors. -
Page 63: Lighting The Water Heater
INSTALLATION INSTRUCTIONS Lighting the Water Heater NOTICE: WARNING: If you have any problems Before operating reading or following the instructions in this manual, this water heater, be sure to read and follow STOP and call a qualified service technician or the instructions on the following label, all labels contractor. - Page 64 INSTALLATION INSTRUCTIONS Lighting the Water Heater Operating Instructions Read, understand, and follow the safety information listed on the operating label on page 63 and in the “Important Safety Information” section 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 65: Setting The Water Temperature
INSTALLATION INSTRUCTIONS The contents on pages 65 through 68 should only be performed by qualified service personnel. Setting the Water Temperature WARNING: Improper adjustment, Priority Indicator alteration, service, or maintenance can result in In-Use death, personal injury, property damage, and/or Indicator product damage. - Page 66 INSTALLATION INSTRUCTIONS Setting the Water Temperature (cont.) While “120” is blinking, press the UP and Press the DOWN adjustment button repeatedly DOWN adjustment buttons at the same time. until 100°F (38°C) or 85°F (29°C) shows in the “120” will stop blinking. LED display.
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Page 67: High-Altitude Adjustments
INSTALLATION INSTRUCTIONS 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 Press the DOWN adjustment button repeatedly 85°F (29°C): until 100°F (38°C) shows in the LED display. - Page 68 INSTALLATION INSTRUCTIONS High-Altitude DIP Switch Adjustments (cont.) Dip switch adjustment 3,280 feet (1,000 m) thru 6,560 feet (2,000 m) If 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). Dip switch Remove the front cover panel on the water adjustment...
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Page 69: Parts Replacement
PARTS REPLACEMENT Parts Ordering WARNING: The model and serial number of the water For your safety, do not heater from the rating plate. attempt to disassemble, repair, or replace any Specify the gas type (natural or LP) as marked portion of this unit. Refer all repairs, service, and/ on the rating plate. - Page 70 PARTS REPLACEMENT Parts Ordering (cont.) Outdoor Gas Components Ref # Description Control Board Gas Valve Burner Assembly Blower Motor Burner Manifold Gas Inlet Connector Water Control Body Water Inlet Connector 3/4" Drain Relief Valve Hot Outlet Connector Remote Control Terminal Block Neutralization kit Front Cover...
- Page 71 NOTES...
- Page 72 NOTES...
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Questions and answers
how to set temp higher
To set the temperature higher on a Rheem RTGH-95DV water heater:
1. Press the UP adjustment button repeatedly until the desired temperature (e.g., 120°F) shows on the LED display.
2. Hold the UP button until the displayed temperature starts to blink.
3. While the temperature is blinking, press the UP and DOWN adjustment buttons at the same time.
4. The display will stop blinking, and the higher temperature setting will be saved.
Note: Residential water heater temperatures can be adjusted up to 140°F (60°C). Do not exceed this limit unless necessary.
This answer is automatically generated