Continuum 2402 User Manual
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Continuum 2402 User Manual

Continuous flow water heater
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How to use your New
Continuous Flow
Water Heater
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.
– WHAT TO DO IF YOU SMELL GAS
– Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
Model 2402
(indoor unit)
• 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.

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Summary of Contents for Continuum 2402

  • Page 1 How to use your New Continuous Flow Water Heater Model 2402 (indoor unit) 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 2: Specifications

    " 4 t e l " 4 t e l " 4 t i n t i n c i r f - i t a l o l f c i t o l f www.rinnaiamerica.com Model 2402...
  • Page 3 " 3 i t n : l a i f / s ' t i i a t ) s l l a i n i t l l a " 4 l l a " 0 Model 2402 800-621-9419...
  • Page 4 Warranty does not cover use as a pool or spa heater. PROCEDURE FOR MAKING A CLAIM In order to obtain the benefits of the warranty, contact your selling dealer or Rinnai at 800-621-9419 for the location of the servicing dealer nearest you.

  • Page 5: Table Of Contents

    About Hot Water ............11 Scalds-First Aid ............11 Remote Control Operation ......... 12 Error Messages ............13 Maintenance & Service Information...... 14,15 Trouble Shooting and Common Questions ....16 Operating Instructions ..........17,18 Care & Lime Condition Warning ........ 18 Model 2402 800-621-9419...

  • Page 6: Warranty

    O W N E R ’ S I N S T A L L A T I O N I N F O R M A T I O N This product must be installed by a Rinnai certified installer. Failure to have the product installed by a Rinnai certified installer may result in a voiding of the product's warranty.

  • Page 7: Features Of Your New Continuum

    Ignition is electronic, there is no pilot light. When the hot water tap is off, no gas is used. You save energy and money with the Continuum 2402. The temperature of the outgoing hot water is constantly monitored by a built in sensor. If...

  • Page 8: Safety Issues

    The between 96°F and 110°F when the hot water temperature may have been changed. tap is open, and hot water is flowing. Do not clean Remote Controls with solvents. Use a soft damp cloth. www.rinnaiamerica.com Model 2402...
  • Page 9 The Continuum 2402 controls the water length of the pipe between the Continuum temperature automatically. To do this it 2402 and the tap in use, there may be a sometimes needs to change the water flow variation between the temperatures displayed accordingly.

  • Page 10: Basic Operation

    To take control of the Continuum 2402 all hot water taps must be closed. Press the "Priority button" on the To operate the Continuum 2402 simply turn Control you want to set the any hot water tap on. This will automatically...

  • Page 11: About Hot Water

    W A T E R Hot Water Is Dangerous, especially for the young and the elderly or the infirm. The Continuum 2402 allows you to precisely control the temperature of your hot water, ensuring safe hot water temperatures. Water Temperatures over 125°F can cause severe burns instantly or death from scalds.

  • Page 12: Remote Control Operation

    The Main Controller MC-45-3US is intended to be used in the kitchen, laundry room or utility area, the Bath Controller BC-45-3US and the Second Bath Controller BSC-45-3US are intended for installation in the bathroom. www.rinnaiamerica.com Model 2402...

  • Page 13: Error Messages

    The Continuum 2402 has the ability to check its own operation continuously. If a fault occurs, an Error Message will flash on the Digital Monitor of the Remote Controls. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call. Please quote the code displayed when inquiring about service.

  • Page 14: Maintenance & Service Information

    5) Do not obstruct flow of combustion and ventilation air. In the case of any fault or error message from the Continuum 2402, first turn all hot water taps off. Wait for 5 seconds. Turn the hot water tap back on. If this does not correct the fault or eliminate the error message from the remote control, press the priority button on and off twice to reset the system.
  • Page 15 Any and all parts removed for inspection or clean annually. service must be replaced before operating the unit. The flame pattern should be as shown in the following Figures. Model 2402 800-621-9419...

  • Page 16: Trouble Shooting And Common Questions

    This can take from 2 to 10 or more seconds depending upon your plumbing system. - After I turn off the hot water tap, the fan on the Continuum 2402 continues to run! - The fan is designed to be on for 65 seconds after the flow of water stops.This is to ensure constant water temperatures during rapid...

  • Page 17: Operating Instructions

    STOP! Follow “B” in 5) Turn the manual valve located at gas the safety information above on this label. inlet of the appliance clockwise If you don’t smell gas, go to next step. to “OFF”. Model 2402 800-621-9419...

  • Page 18: Care & Lime Condition Warning

    If you notice “LC” flashing on the remote key pad, this means the unit is beginning to lime up, and MUST be flushed. Contact a qualified Rinnai service technician to flush the appliance. Failure to flush the appliance when “LC” is flashing, will cause damage to the heat exchanger.
  • Page 19 Installer’s Instructions This section is for the Rinnai Certified Installer only. If you are not certified you are not authorized to install this unit. The warranty may be voided due to installation by a non-certified installer. For information on becoming a Rinnai Certified Installer, call 1-800-621-9419.

  • Page 20: Warnings

    - Toxic chemicals such as those used for boiler water treatment are NOT to be introduced to the Continuum 2402. - The Continuum 2402, if it will be used as a potable water source, it must not be connected to a system that was previously used with a nonpotable water heating appliance.

  • Page 21: Performance Data

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S C O N T I N U U M P R E S S U R E D R O P C U RV E Model 2402 800-621-9419...

  • Page 22: Locating The Unit

    . l a c i t y l l . l l y l l . l l y l l c i r c i t l l a t a l c t i . ) f www.rinnaiamerica.com Model 2402...

  • Page 23: Dimensions

    INSTALLER’S INSTALLATION INSTRUCTIONS Dimensions Model 2402 800-621-9419...

  • Page 24: Recommended Piping For Installation

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S RECOMMENDED PIPING FOR INSTALLATION www.rinnaiamerica.com Model 2402...

  • Page 25: Venting

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Venting The maximum allowable “Equivalent Length (D)” of vent pipe for the 2402 water heater is 41 feet (as determined using the formula below). If “D” is greater than 41, the vent/air intake piping is too long or there are too many elbows, redesign the vent pipe run.
  • Page 26 Vent/Air Intake for Continuum 2402 Hot Water Systems The only vent/air intake system approved for use with this appliance by CSA is the Rinnai/ Ubbink vent system and components. The vent system must vent directly to the outside of a building and use outside air for combustion as indicated in the diagrams below.

  • Page 27: Gas Piping Sizing Charts

    After determining the length of pipe required select the pipe size that will supply the cubic feet per hour of gas required for the input rating of the Continuum 2402. The formula for figuring the cubic feet per hour required is:...

  • Page 28: Gas Piping Notes

    1) A manual gas control valve must be placed upon the gas inlet connection to the Continuum 2402 before it is connected to the gas line. A union can be used on the connection of the Continuum for the future servicing or disconnection of the unit.

  • Page 29: Water Piping Notes

    1) A manual water control valve must be placed upon the water inlet connection to the Continuum 2402 before it is connected to the water line. Unions may be used on both the hot/cold water supply lines, for the future servicing or disconnection of the unit.

  • Page 30: Electrical Connection Notes

    I N S T R U C T I O N S Electrical Connection Notes WARNING: The Continuum 2402 must be electrically grounded in accordance with local codes or in the absence of local codes with the most recent edition of the National Electrical Code, ANSl/NFPA 70.

  • Page 31: Wiring Diagram

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Wiring Diagram Model 2402 800-621-9419...
  • Page 32 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Wiring Diagram www.rinnaiamerica.com Model 2402...

  • Page 33: Lighting The Unit

    DO NOT TRY TO LIGHT THE BURNER BY HAND. 2) Before operating the Continuum 2402 smell all around the unit for gas. Be sure to smell near the ground as leaking gas may settle there.

  • Page 34: Remote Controls

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Remote Controls- General The remote controls for the Continuum 2402 allow the customer to control the functions of the water heater and to diagnose certain fault conditions.
  • Page 35 Disconnect the power from the Continuum 2402. Remove the cover of the Continuum 2402. Remove the plastic cover from the PCB and electrical connections.

  • Page 36: Testing

    11) Check the operation of the unit. Check the operation of each of the remote controls. Check the operation of the Power failure protection system. 12) Explain the proper operation of the Continuum 2402 to the customer. www.rinnaiamerica.com Model 2402...

  • Page 37: Diagnostic Points

    ° 5 Ω Ω c t i Ω ° 5 Ω ° 0 t s i Ω ° 5 Ω o l l Ω Ω TRANSFORMER VOLTAGES AND RESISTANCES Ω Ω Ω Ω o l l Ω Ω Model 2402 800-621-9419...

  • Page 38: Schematic Diagram

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Schematic Diagram (Lime Sensor) www.rinnaiamerica.com Model 2402...

  • Page 39: Exploded View

    I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Exploded View - Cabinet Model 2402 800-621-9419...
  • Page 40 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Exploded View - Internals www.rinnaiamerica.com Model 2402...
  • Page 41 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Exploded View - Internals Model 2402 800-621-9419...
  • Page 42 I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S Exploded View - Electrical www.rinnaiamerica.com Model 2402...

  • Page 43: Parts List

    Damper B (LPG) BU155-414-B Burner Unit Assembly F . CU162-210 Burner Case Front CU155-222 Side Type Sleeve Burner Assembly B3A1-4 Burner Case Bottom Panel CU155-223-T Slope Blate BU155-228 Burner Case Back Panel CU155-224 Electrode Holder AH24-342 Electrode AH24-344 Model 2402 800-621-9419...
  • Page 44 Back Pressure Pipe BU162-816 CK Cramp ES-10037-1 Pressure Tube AU161-665-a Flue Connection Assy BU162-820 Blower Motor Assy CU162-610-2 Air Inlet Packing BU162-617 Fan Connecting Packing AU183-562 Water Inlet ( 314" NPT) H73-501-2 Water Filter Assy H73-511 Rectifier M8D 1-11 www.rinnaiamerica.com Model 2402...
  • Page 45 120V Anti-Frost Heater BU195-1879 Anti-Frost Heater Clip AU195-675 Anti-Frost Heater Clip A AU111-653 Ignitor Bracket BU162-1884 Over Heat Switch BU129-824 Thermal Fuse Harness B BU162-1795-2 Thermal Fuse Clips CP-80531 Thermistor BH45-650 Thermistor Clip CP-90172 Frost Sensing Switch BU189-530 Model 2402 800-621-9419...
  • Page 46 Screw ZBA051OUK Screw ZEAB0408SZ Washer CF83-41430 Screw ZAD0408UK Screw ZEAB0408UK Screw ZAG0512UK Screw C P-21478-412 Screw ZEDB0408SZ Screw ZBA0408UK Screw ZEAB0406UK Screw ZHAA041OUK Screw ZAA0408UK Screw ZAG0514UK “O” Ring (S4) M10B-13-4 “O” Ring (P24) M10B-1-24 Packing C36F8-1 www.rinnaiamerica.com Model 2402...
  • Page 47 “O” Ring (P16) M10B-2-16 “O” Ring (P14) M10B-2-14 “O” Ring (P18) M10B-2-18 “O” Ring (P10) M10B-2-10 Manual 3/4" gas control valve BU195-1865 Kitchen remote control kit MC-45-3US Bathroom Remote Control kit BC-45-3US 2nd Bathroom Remote Control kit BSC-45-3US Model 2402 800-621-9419...
  • Page 48 Rinnai’s other fine products: The Silent Servant *North America’s only vent-free convection heater *99% efficient *whisper quiet *perfect for hard to heat areas The Energy Savers *Direct Vent Heating with style and performance *whisper quiet *available with multi-step set back...

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