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.
AP18818 (04/17)
COMMON VENTING
INSTALLATION
INSTRUCTIONS
For commercial installation only
RTGH-C95DVLN (Standard commercial) and
RTGH-CM95DVLN (Manifold ready)
Natural gas only
This instructions is a supplement to the Commercial
Tankless Water Heater Use and Care manual.
Additional information can be obtained from the
Rheem Commercial Tankless Water Heater Use and
Care Manual.
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Table of Contents
Related Manuals for Rheem RTGH-C95DVLN
Summary of Contents for Rheem RTGH-C95DVLN
- Page 1 Tankless Water Heater Use and Care manual. • Do not try to light any Additional information can be obtained from the appliance. Rheem Commercial Tankless Water Heater Use and • Do not touch any electrical Care Manual. switch; do not use any phone in your building.
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Page 2: Table Of Contents
CONTENTS Important Safety Information Safety Precautions………………………………………………2-8 Installation Instructions Sizing ………................9 Common Vent Kit Components………........10 Typical Common Vent Installation…….......11-12 Common Venting……………………..………….....13-29 Condensate…………………………..…………………..…30 Multiple Units Controls…...………………..…………..30 Initial Power up Sequence……………………..……...31 Installation Check List………………………………....32 High Altitude Adjustment……………………......32 Preventive Maintenance……………………………....33 Parts Order………………………………………………..…34 If You Need Service Call for Assistance………………………………………....36 IMPORTANT SAFETY INFORMATION READ THE SAFETY INFORMATION... -
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 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: Installation Instructions
RTGH-C95DVLN and RTGH-CM95DVLN RTGH-CM95DVLN has a pre-installed manifold control. RTGH-C95DVLN is not shipped with manifold control. This is the only difference between these two models. Both these models can be mixed to use with the Rheem common vent system. Cold Water -... -
Page 10: Common Vent Kit Components
PRODUCT INFORMATION Common Vent Kit Components Exhaust Intake Rheem Part Number Part Description Rheem Part Number Part Description SP20918A 3" PVC to PP Adaptor SP20918G 4" Straight Pipe, 2' SP20918J 3", 87 Degree Elbow SP20918E Exhaust Branch Tee SP20918X 3" Connector Ring... -
Page 11: Typical Common Vent Installation
INSTALLATION INSTRUCTIONS Typical Common Vent Installations Typical Inline Common Vent Installations Direct Vent 12” - 24” (31 cm – 61 cm) 3 Degree upward Wall slope toward outside 3° Min 36” (91cm) Max 20’ (6.1m) SCALE 1.000 20.5”(52 cm) To suitable drain Power Vent (Room Air Application) FOR YOUR SAFETY DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. - Page 12 INSTALLATION INSTRUCTIONS Typical Common Vent Installations (cont.) The following header vent kits can be purchased separately to create common venting system: Rheem Part Number Common Vent Kit Description Rheem Part Number Common Vent Kit Description SP20908A 8" Inline 2 units Direct Vent Header Kit SP20909A 8"...
- Page 13 The use of cellular core PVC (ASTM F891), cellular or any other tankless models are prohibited to utilize core CPVC, or Radel® (polyphenolsulfone) in non- Rheem approved common venting system. metallic venting systems is prohibited and that covering non-metallic vent pipe and fittings with DANGER: thermal insulation is prohibited.
- Page 14 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Preexisting Venting Notes: The system will not operate if there is excessive restriction (pressure drop) in the venting system. Use If the water heater is being installed as a replacement the chart above to calculate the maximum pipe run for an existing water heater, a thorough inspection of length with the required number of elbows.
- Page 15 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 16 INSTALLATION INSTRUCTIONS Inside corner detail Fixed closed Operable Fixed closed Operable Regulator vent outlet AREA WHERE TERMINAL IS NOT PERMITTED X AIR SUPPLY INLET V VENT TERMINAL Horizontal Vent Terminal Location for Direct Vent The following information should be used for determining the proper location of the vent terminal for direct vent water heaters.
- Page 17 INSTALLATION INSTRUCTIONS 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. This water heater can use room air for combustion and ventilation as long as the installation complies with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, and other applicable standards and local codes.
- Page 18 INSTALLATION INSTRUCTIONS Horizontal Vent Considerations WARNING: WARNING: Moisture in the flue gas will condense as it leaves the vent A minimum distance between terminations must be terminal. In cold weather this condensate can freeze on the maintained to prevent recirculation of vent gases. Maintain exterior wall, under the eaves, and on surrounding objects.
- Page 19 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) 12”-24” (31cm-61cm) Upward Slope to Termination Min 36” (91cm) Max 20’ (6.1m) Exhaust Vent Air Intake Pipe Pipe Wall plate Inspection Ceiling Access Panel (Optional) Joint Connections Exhaust Vent Installation for 3” and 4” diameters Instructions •...
- Page 20 Connect the branch tee to another branch tee. Repeat Install a 4" straight pipe to the NRV. Exhaust common steps 1 to 6 until all exhaust branch tees are connected. venting is required to have a 3° rise or a 5/8 per foot (5.6 cm per meter) upward slope toward the outdoors.
- Page 21 Connect a tee cap to the end of the air intake common vent trunk line. CAUTION: Use Rheem approved InnoFlue® PP. No other vent material is permitted for common venting. For Canada, installations must follow ULC-S636 for exhaust venting. Also, all pipe, fittings and procedures must conform to ULC-S636 and vent manufacturer specifications.
- Page 22 INSTALLATION INSTRUCTIONS Hole should be 0.5” (1.3 cm) or larger than vent pipe Horizontal Vent Installation To extend the exhaust common vent trunk line and the 12”-24” air intake common vent trunk line to outside, additional (31cm - 61cm) InnoFlue® PP are required. Refer to "Parts list" for additional information.
- Page 23 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Horizontal Vent Installations 12”-24” (31cm-61cm) 12”-24” (31cm-61cm) Upward Slope to Termination Upward Slope Min 36” (91cm) to Termination Max 20’ (6.1m) Min 36” (91cm) Max 20’ (6.1m) Exhaust Vent Air Intake Pipe Pipe Wall plate Exhaust Vent...
- Page 24 Improper vent installation can result in death, personal injury, product damage, and/or poor performance. 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 25 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Vertical Vent Terminal Location 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 26 INSTALLATION INSTRUCTIONS Standard Vertical Vent Termination Adjustable Roof Flashing Support Clamp Upward Slope Support Hanger Exhaust Vent Pipe Air Intake Pipe To Suitable Drain...
- Page 27 INSTALLATION INSTRUCTIONS Venting for Direct-Vent Water Heater (cont.) Alternative Vertical Vent Termination Adjustable Roof Flashing Support Clamp Upward Slope Support Hanger Exhaust Vent Pipe Air Intake Pipe...
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Page 28: Common Venting
The openings shall Combustion Air Requirements communicate directly, or by ducts, with the outdoors or Rheem commercial tankless water heater is allowed to spaces that freely communicate with the outdoors, as utilize room air in commercial applications using Rheem follows: common venting system. - Page 29 Combination Indoor and NOTICE: Outdoor Combustion Air Protective screening for the openings MUST NOT be smaller than 1/4”mesh to prevent clogging by lint or other debris. The use of a combination of indoor and outdoor Refer to the latest edition of National Fuel Gas Code, combustion air shall be in accordance with the following: ANSI Z223.1/NFPA 54 for additional information for the (1) Indoor openings.
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Page 30: Condensate
NO other manufacturer's manifold systems are suitable for use with Rheem's tankless water heaters. NOTICE: DO NOT use other manufacturer’s common vent system with Rheem’s tankless water heaters. DO NOT use other manufacturer’s water heaters with Rheem’s common vent system. -
Page 31: Initial Power Up Sequence
WARNING: Find a plastic bag located on the back of the front DO NOT operate Rheem tankless water heaters for common cover. One gas chip is for common vent and the other vent application without the gas chip for common vent. -
Page 32: Installation Checklist
INSTALLATION INSTRUCTIONS Installation Checklist A. Water Heater C. Water Supply Model is RTGH-C95DVLN or RTGH-CM95DVLN Water supply has sufficient pressure. Water supply is properly sized Water heaters must be installed indoors Sufficient fresh air supply for proper operation of water heater Air supply free of corrosive elements and D. -
Page 33: Preventive Maintenance
CARING FOR YOUR WATER HEATER Preventive Maintenance WARNING: Ball Siphon Failure to perform routine preventive maintenance can prevent the water heaters and common venting system 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. -
Page 34: Parts Order
3. Parts description (as shown below) and number of Address all parts orders to the distributor or store where parts desired. the common venting system was purchased. All parts Rheem Part Number Part Description SP20918A 3" PVC to PP Adaptor SP20918B 4", 87 Degree Elbow... - Page 35 NOTES...
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Page 36: If You Need Service
IF YOU NEED SERVICE Call for Assistance 1. All questions, adjustments, repairs, and/or routine When contacting the manufacturer, the following maintenance should be directed to your installer, information will be requested: plumbing contractor, or licensed service agent. If your A. Model and serial number. (See page 8 or the ratings contacts have moved or are not available, please refer plate on the side of the water heater.) to the telephone directory, commercial listings, or local...