Rinnai Demand Duo R Series Installation And Operation Manual
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Rinnai Demand Duo R Series Installation And Operation Manual

Rinnai Demand Duo R Series Installation And Operation Manual

Automatic circulating tank water heater
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C
US
SANITATION
Low Lead Content
NSF/ANSI 372
For Indoor Commercial Applications Only:
This product is NOT intended for residential applications.
CHS19980RiN . ....... 80 Gallon, 199,000 BTU
CHS19980RiP . ....... 80 Gallon, 199,000 BTU
CHS199100RiN . ..... 100 Gallon, 199,000 BTU
CHS199100RiP . ..... 100 Gallon, 199,000 BTU

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Summary of Contents for Rinnai Demand Duo R Series

  • Page 1 SANITATION Low Lead Content NSF/ANSI 372 For Indoor Commercial Applications Only: This product is NOT intended for residential applications. CHS19980RiN ..80 Gallon, 199,000 BTU CHS19980RiP ..80 Gallon, 199,000 BTU CHS199100RiN ..100 Gallon, 199,000 BTU CHS199100RiP .
  • Page 2 WARNING IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. — Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. —...

  • Page 3: Table Of Contents

    1. Welcome ..........................4 2. Safety ............................5 2.1 Safety Symbols ........................5 2.2 Safety Precautions ......................5 3. About ............................7 3.1 Components ........................7 3.2 Specifications ........................8 3.3 Dimensions ......................... 10 4. Installation ..........................12 4.1 Installation Guidelines ......................12 4.2 What You Will Need ......................

  • Page 4: Safety Precautions

    Thank you for purchasing Rinnai’s Demand Duo™ R-Series Commercial Automatic Circulating Tank Water Heater. This manual • provides information on the installation, operation, You must read the entire manual to properly operate the water heater and understand and maintenance of Rinnai’s Demand Duo™...
  • Page 5 − Turn off the gas at the gas valve, usually located immediately before the water heater. − Turn off the incoming water supply. This can be done at the isolation valve This is the safety alert symbol. This immediately before the water heater or by symbol alerts you to potential hazards turning off the water supply to the building.
  • Page 6 • Install the vacuum relief valve per local CAUTION codes. Massachusetts 248 CMR Section 10.14 (I) “All potable water pressure tanks • BURN HAZARD. Hot exhaust and vent may shall be provided with a vacuum relief valve cause serious burns. Keep away from the water heater unit.

  • Page 7: Components

    Figure 1: Components Intake Filter Exhaust Connector (IFEC) (Supplied but not installed) Electric Conduit Pump IMPORTANT The tankless engine is to be used as a service part only for the De- mand Duo™ R-Series System. RL94 is not permitted as a substi- tute.
  • Page 8 Product Number CHS19980RiN CHS19980RiP Product Description Automatic Circulating Tank Water Heater Installation Type Indoor Minimum Gas Consumption Btu/hr (kW/hr) 23,000 (6.7) Maximum Gas Consumption Btu/hr (kW/hr) 199,000 (58.3) 80 Gallons Tank Volume (303 Liters) 249 Gallons First Hour Delivery at 100°F Rise (942 Liters) Temperature Setting 120°F (49°C) to 180°F (82°C)
  • Page 9 Product Number CHS199100RiN CHS199100RiP Product Description Automatic Circulating Tank Water Heater Installation Type Indoor Minimum Gas Consumption Btu/hr (kW/hr) 23,000 (6.7) Maximum Gas Consumption Btu/hr (kW/hr) 199,000 (58.3) 119 Gallons Tank Volume (450 Liters) 276 Gallons First Hour Delivery at 100°F Rise (1046 Liters) Temperature Setting 120°F (49°C) to 180°F (82°C)
  • Page 10 Figure 2: Dimensions for 80 Gallon Storage Tank Models 28.02 (711.70) CHS19980RiN Ø 24.25 (615.95) CHS19980RiP Measurements below are shown in inches (millimeters). 16.52 (419.60) Front Side 4.19 (106.43) 1-1/2 in. MNPT Cold 3.54 (89.92) Drain Demand Duo™ R-Series Installation and Operation Manual...
  • Page 11 Figure 3: Dimensions for 100 Gallon Storage Tank Models CHS199100RiN 33.7 (855.98) Ø 28.3 (718.82) CHS199100RiP Measurements below are shown in inches (millimeters). 18.7 (474.98) Front Side *The gas connection includes a 4.20 (106.68) 36 in. long flex line. 1-1/2 in. MNPT Cold 3.44 (87.37) Drain...

  • Page 12: Choose An Installation Location

    DO NOT • Topics in this section Do not install the Commercial Water Heater outdoors. • Installation Guidelines • Do not install the appliance in an area where • What You Will Need water leakage of the unit or connections will result in damage to the area adjacent to the •...
  • Page 13 • Pipe Wrenches (2) • Adjustable pliers This section provides information on the importance of water quality to the Rinnai • Screwdrivers (2) R-Series Commercial Automatic Circulating Tank • Wire Cutters Water Heater. The information is intended to •...
  • Page 14 Scale build up is caused by hard water set at a 0 in. high temperature. Min. Rinnai offers Southeastern Filtration’s “ScaleCutter Water Conditioning System” that offers superior lime scale prevention and corrosion control by feeding a blend of control compounds into the cold water supply.
  • Page 15 3. Position straps around the Demand Duo tank per the requirements of California Office of the State Architect. DO NOT POSITION 1. Choose the right hand truck to support the STRAPS OVER PIPE, FITTINGS or WIRE. weight and size of the water heater. Refer to 4.

  • Page 16: Venting

    MUST not be used on this water heater. Rinnai accepts no liability for • Vertical Category I vent or vent connector damage or injury if such devices are installed on runs must be as short and direct as possible.
  • Page 17 • Existing gas vent or chimney is to be checked to ensure they meet clearances and local codes. Figure 7: Vent Pipe Assembly • This appliance can ONLY be connected to a manufactured chimney or vent that complies with a recognized standard. Venting into a masonry or concrete chimney is only Vent Pipe permitted as outlined in the NFPA 54/ANSI...
  • Page 18 Support: Vent connectors must be supported per the vent Vent Connectors are relatively short runs of vent, manufacturer’s installation instructions to avoid connecting the appliance to the chimney or dips or sags in the vent and maintain the required vertical vent run. clearances.
  • Page 19 All gas vents shall extend through the roof flashing, roof jack, or roof thimble and terminate All flue (vent) gases must be directed to the with a listed cap or listed roof assembly. outdoors of the building or structure and must not The gas vent shall terminate at least 3 ft.
  • Page 20 Common venting of this Category 1, fan-assisted Masonry Chimneys shall be built and installed in appliance is permitted. Consult the latest version accordance with NFPA 211, Standard for of the National Fuel Gas Code (ANSI Z223.1/ Chimneys, Fireplaces, Vents and Solid Fuel- NFPA 54).
  • Page 21 Figure 10 32 ft. (9.7 m) This water heater requires adequate combustion air for ventilation and dilution of flue gases. Failure to provide adequate combustion air can result in unit failure, fire, explosion, serious bodily 32 ft. injury or death. Use the following methods to (9.7 m) ensure adequate combustion air is available for correct and safe operation of this water heater.
  • Page 22 Figure 11 (Small Room, Closet, Alcove, Utility Room, Etc.) A confined space is defined in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 as "a space whose volume is less than 50 cubic feet per 1000 Btu/hr (4.8 m3 per kW per hour) of the aggregate input rating of all appliances installed in that space."...
  • Page 23 Figure 15: Indirectly through vertical ducts Outdoor air can be provided to a confined space through two permanent openings, one commencing within 12 in. (300mm) of the top and one commencing within 12 in. (300mm) of the bottom, of the confined space. The openings shall communicate to the outside by one of two ways: 1.
  • Page 24 □ Verify proper clearances around the vents. Ensure that the Combustion Air Requirements are followed that will provide sufficient combustion air □ for the appliance. Ensure you have used the correct venting products for Category 1 and that you have completely followed the venting manufacturer’s installation instructions and these installation instructions.

  • Page 25: Connect The Gas Supply

    MUST DO Topics in this section • A gas valve must be placed in the gas supply • Connect the Gas Supply line to the water heater. Flex line provided with • Gas Operating Instructions the appliance can be used as a union. •...
  • Page 26 3. Thread the flare side of the 36 in. Gas Flex into the flare side of the Gas Flare Adapter (Figure 20). Figure 18 Figure 20 3/4 NPT Side Flare Side Flare Side 36 in. Gas Flex 1. Apply a pipe sealant approved for gas to 4.
  • Page 27 FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly, a fire or explosion may WARNING result causing property damage, personal injury, or loss of life. A. This appliance does not have a pilot. It is •...
  • Page 28 The gas supply must be capable of handling the Pipe Sizing Table - Natural Gas entire gas load required at the location. Gas line sizing is based on gas type, the pressure drop in Schedule 40 Metallic Pipe the system, the gas pressure supplied, and gas line type.
  • Page 29 WARNING • Do not use an extension cord or adapter plug with this appliance. • The water heater must be electrically grounded in accordance with local codes and ordinances or, in the absence of local codes, in accordance with the National Electrical Code, ANSI/NFPA No. 70. •...
  • Page 30 4. Install conduit into the knockout opening and pull the green, white and black wires into the box. 5. Strip the green, white, and black field sup- 1. Locate the electric conduit on the side of plied wires 1/2 in. Make sure the conductors the water heater (Figure 23).
  • Page 31 The system controller maintains communication between the tank and tankless via the tankless communication cable to effectively control the IMPORTANT tank temperature based on the selected Water heaters covered in this manual have temperature on the tankless unit. been tested and approved for installation The system controller will energize (120V) the at elevations up to 5,400 ft.
  • Page 32 Figure 29 Slow flash indicates controller is active with no errors Tankless flow rate has dropped below Power supply is 2.5 GPM working correctly Displays set temperature Tank Recovery Pump Activated □ A manual gas control valve is placed in the gas line to the water heater. □...

  • Page 33: Pressure Relief Valve Requirements

    • If a PRV discharges periodically, this may be Topics in this section due to thermal expansion in a closed water supply system. Contact the water supplier or • Pressure Relief Valve Requirements local plumbing inspector on how to correct this •...
  • Page 34 Figure 30 A Hot Water Outlet B Hot Water Outlet Valve C Temperature-Pressure Relief Valve Hot Water Supply D Cold and Hot Unions E Cold Water Supply Valve Cold Water Supply G Thermal Expansion Tank H 6 in. B-Vent Cold Water Supply Operation Unit / Temperature Control...
  • Page 35 Single Unit Circulation Note: Installation must conform to applicable codes and all requirements listed in this manual. Balancing valves, equivalent piping , pressure gauges, and temperature gauges are to be used as necessary to ensure proper flow between units. All components shall be selected for the pressure and temperature rating of the installation. Hot Water Supply Line Figure 32 6 inch.
  • Page 36 Demand Duo™ R-Series Installation and Operation Manual...
  • Page 37 1. Ensure the drain valve located at the bottom of the tank is closed. 2. Open the nearest hot water fixture in the plumbing system. 3. Open the cold water supply valve to the water heater. 4. Keep the hot water fixture open until the tank is filled and constant flow is obtained at the Water connections to the water heater should fixture.
  • Page 38 □ The water heater is not subject to corrosive compounds in the air. The water supply does not contain chemicals or exceed total hardness that will damage the heat □ exchanger. □ Balanced system piping for multiple units. □ Building recirculation pump is sized correctly. □...

  • Page 39: Safety Precautions

    Topics in this section • Safety Precautions • Control Panel • Basic Operation Settings WARNING WARNING • • Before operating, smell all around the If you install this water heater in an area that appliance area for gas. Be sure to smell next is known to have hard water or that causes to the floor because some gas is heavier than scale build-up the water must be treated and/...
  • Page 40 Figure 34 Indicates the water heater is in recovery Display Increases hot water Enables controller when temperature multiple controllers are used Decreases hot water Turns the water heater on or off temperature A temperature lower than 120°F (49°C) can be obtained at the tap by mixing with cold water. To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/Off”...
  • Page 41 3. Press the (Up ) or (Down) buttons to obtain the desired temperature setting. The temperature can only be changed when either the “In Use” light or recovery pump are off. Figure 36 Water temperatures over DANGER 125°F (52°C) can cause severe burns or scalding resulting in death.
  • Page 42 1. To lock the controller, press and hold down To eliminate the beeps when keys are pressed the “Priority” button. follow the steps below. 2. While holding down the “Priority” button, press the (Up) button until a beep is heard 1.

  • Page 43: Diagnostic Codes

    Storage Tank Topics in this section Drain water through the drain valve at least once a year. This will remove excess sediment from • Diagnostic Codes the bottom of the tank. This sediment, if allowed • Replacement Parts to accumulate, will reduce the efficiency and the •...
  • Page 44 This water heater is designed to display diagnostic codes. If there is a potential operation concern, refer to the code and remedy in this section. To Display Diagnostic Information To display the most recent diagnostic information codes press and hold the “On/Off” button for two seconds on the controller.
  • Page 45 No Flame Over Temperature Warning • Check that the gas is turned on at the (Safety shutdown because unit is too hot) water heater, gas meter, or cylinder. • Check for obstructions in the flue outlet. • Check for restrictions in air flow around unit and vent terminal.
  • Page 46 Combustion Fan Maintenance has been performed • Ensure fan will turn freely. Indicates a licensed professional performed maintenance or corrected an issue. • Check wiring harness to motor for damaged and/or loose connections. No Code - Nothing happens when pump is •...
  • Page 47 Date Service / Maintenance Completed Demand Duo™ R-Series Installation and Operation Manual...
  • Page 48 Date Service / Maintenance Completed Demand Duo™ R-Series Installation and Operation Manual...
  • Page 49 Rinnai’s sole discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in mate- rial or workmanship; damaged by improper installation, use or operation; or damaged during return ship- ping.
  • Page 50 Limitation on warranties No one is authorized to make any other warranties on behalf of Rinnai America Corporation. Except as expressly provided herein, there are no other warranties, expressed or implied, including, but not limited to warranties of merchantability or fitness for a particular purpose, which extend beyond the description...
  • Page 51 04/2020 100000675(01)

This manual is also suitable for:

Demand duo chs19980rinDemand duo chs19980ripDemand duo chs199100rinDemand duo chs199100rip

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