Rinnai CX Series Installation Instructions Manual
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Rinnai CX Series Installation Instructions Manual

With sensei cx tankless water heaters
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  • Page 1 • • • •...

  • Page 2: Table Of Contents

    Thank you for purchasing a Rinnai Tankless Rack CONTENTS Page System (TRS). This manual provides instructions on 1 Welcome installing a TRS. For specific questions on the Rinnai 2 About Tankless Water Heaters, refer to the “Rinnai Tankless Water Heater Installation and Operation Manual” 3 Safety supplied with each water heater in the rack system.

  • Page 3: About

    • Optional electronic controls to obtain turn down ratios of up to 327:1 (sold separately). The TRS is designed for use with Rinnai Tankless Water Heaters only. Do not mount non-Rinnai tankless water heaters on the TRS. 3. Safety WARNING •...
  • Page 4 • Rinnai recommends that every home have a carbon Do not use substitute materials. Use only parts monoxide (CO) alarm in the hallway near bedrooms in certified for the appliance.

  • Page 5: Configurations

    Refer to the “Initial Settings” section in the “Tankless Water Heater Installation and Operation Manual” for complete instructions. * Indoor tankless water heaters (applicable models) can convert to an outdoor installation with the Rinnai outdoor vent cap (purchased separately). Contact Rinnai for more information.
  • Page 6 Free-Standing Racks Part No.* Rack Type Configuration Illustration TRS02ILCXiN 2-unit INLINE interior free-standing rack, NG TRS03ILCXiN 3-unit INLINE interior free-standing rack, NG TRS03CXiN 3-unit interior free-standing rack, NG TRS04CXiN 4-unit interior free-standing rack, NG TRS05CXiN 5-unit interior free-standing rack, NG TRS06CXiN 6-unit interior free-standing rack, NG * Part No.

  • Page 7: Specifications

    5. Specifications WALL-HANGING RACKS Available Configurations 2-Units • 3-Units • CX and CXP Series 2 - U n i t Wa l l - H a n g i n g F r a m e LEFT FRONT BACK 47.00 20.50 5.91 7.59...
  • Page 8 CX and CXP Series 2-Unit Wall-Hanging Frame (Continued) Model TRW02CXi TRW02CXPi Water Heater Model CX199i (NG/LP) / CXP199i (NG/LP) Crate Dimensions (HxLxD) - in 66 x 70 x 35 Weight - Fully Assembled - lbs Weight - Shipping (total) - lbs Rack Frame - Specifications Frame Material Aluminum...
  • Page 9 WALL-HANGING RACKS → CX SERIES Available Configurations 2-Units • CX Series 2 - U n i t C o m p a c t Wa l l - M o u n t F r a m e LEFT FRONT BACK 39.00...
  • Page 10 CX Series 2-Unit Compact Wall-Mount Frame (Continued) Model TRX02CX Water Heater Model CX199i (NG/LP) Crate Dimensions (HxLxD) - in 46 x 42 x 48 Weight - Fully Assembled - lbs Weight - Shipping (3 components) - lbs Rack Frame - Specifications...
  • Page 11 WALL-HANGING RACKS → CX SERIES CX and CXP Series 3 - U n i t Wa l l - H a n g i n g F r a m e FRONT LEFT BACK 65.00 41.00 5.91 TYP 7.59 55.94 56.50...
  • Page 12 CX and CXP Series 3-Unit Wall-Hanging Frame (Continued) Model TRW03CXi TRW03CXPi Water Heater Model CX199i (NG/LP) QTY 2 CXP199i & QTY 1 CX199i Crate Dimensions (HxLxD) - in 66 x 70 x 35 Weight - Fully Assembled - lbs Weight - Shipping (total) - lbs Rack Frame - Specifications Frame Material Aluminum...
  • Page 13 FREE-STANDING RACKS Available Configurations 2-Units, 3-Units, 4-Units, 5-Units, 6-Units • 4 - U n i t F r e e - S t a n d i n g F r a m e FRONT LEFT 47.00 20.50 18.45 5.93 57.69 4.50 GAS (1-1/4”...
  • Page 14 4-Unit Free-Standing Frame (Continued) Model TRS04CX TRS03CX TRS02ILCX Water Heater Model CX199i (NG/LP) Crate Dimensions (HxLxD) - in 66 x 70 x 35 Weight - Fully Assembled - lbs Weight - Shipping (total) - lbs Rack Frame - Specifications Frame Rail Type Sheet Metal Frame Material Aluminum (0.090 5052-H32)
  • Page 15 6 - U n i t F r e e - S t a n d i n g F r a m e FRONT LEFT 65.00 18.45 41.00 5.93 57.69 4.50 GAS (1-1/2” NPT) 9.43 COLD (2-1/2” COPPER) 14.45 HOT (2-1/2” COPPER) 17.19 CONDENSATE (3/4”...
  • Page 16 6-Unit Free-Standing Frame (Continued) Model TRS06CX TRS05CX TRS03ILCX Water Heater Model CX199i (NG/LP) Crate Dimensions (HxLxD) - in 66 x 70 x 35 Weight - Fully Assembled - lbs Weight - Shipping (total) - lbs Rack Frame - Specifications Frame Rail Type Sheet Metal Frame Material Aluminum (0.090 5052-H32)

  • Page 17: Installation

    When selecting an installation location, you must ensure the tankless water heaters mounted on the rack comply with the required clearances. For clearance requirements, refer to the “Rinnai Tankless Water Heater Installation and Operation Manual” supplied with each water heater in the rack system.
  • Page 18 Hoisting Straps (Supplied by Installer) For TRW02 and TRW03 wall hanging racks, use Models Designed for Hoisting Straps hoisting straps (supplied by installer) looped around the top frame. TRW03CX TRW02CX Weights of the complete assemblies are available in the Specifications section of this manual. TRW02CXP TRW03CXP DO NOT hoist the crate or palette.
  • Page 19 Secure the Rack Secure Free-Standing Racks All mechanical components shall be anchored and installed in accordance with national and/or local codes having jurisdiction. Base holes to secure all free-standing rack systems are 0.563 inches in diameter. Reference local codes regarding minimum concrete thickness and use appropriate expansion anchors that are capable of supporting the rack system weight.
  • Page 20 Secure Wall-Hanging Racks (TRW Models) THE WALL MUST BE CABABLE OF CARRYING THE OPERATING WEIGHT OF THE INSTALLED TRS WARNING SYSTEM. CONSULT A STRUCTURAL ENGINEER FOR STRUCTURAL ANALYSIS OF THE WALL AND APPROPRIATE HANGING METHODS BEFORE ATTEMPTING TO HANG THE TRS SYSTEM. FAILURE TO COMPLY WITH THE ABOVE REQUIREMENT COULD RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY OR DEATH.

  • Page 21: Venting

    7. Venting For complete venting options and installation instructions, refer to the “Rinnai Tankless Water Heater Installation and Operation Manual.” Venting components are packaged separately from the pre-assembled rack for field assembly of the vent system by the contractor. The following vent options are available: •...
  • Page 22 Vent Options The following table lists the vent options for the CX and CXP Series tankless water heaters. Vent Options for CX and CXP Series Tankless Water Heaters Vent Material Diameter Vent Max. Maximum Options Units Vent Length Exhaust Intake Header Vent 3 in.

  • Page 23: Plumbing

    Pressure Relief Valve Piping Each Rinnai Tankless Water Heater on the rack system comes installed with isolation valves and a pressure relief valve. Refer to the “Rinnai Tankless Water Heater Installation and Operation Manual” for information on piping the isolation valves and pressure relief valve.
  • Page 24 Tankless Rack System Parallel Piping Diagram TRS with SENSEI CX Tankless Water Heaters Installation Instructions...
  • Page 25 Piping End Caps / Connections End caps are field-supplied and must be the following materials: • Cold water cap - Brass or Copper • Hot water cap - Brass or Copper • Gas cap - Black Iron When flow direction and gas supply side are determined, the other (opposite) side of the manifold must be capped. See the example below.
  • Page 26 Condensate Drain Condensate drain must be sloped downward from the Each Rinnai Tankless Water Heater has a condensate rack system. Condensate must be disposed of per local drain outlet on the bottom of the unit. A drain line codes. must be connected to each water heater.

  • Page 27: Gas Supply

    9. Gas Supply WARNING • A licensed professional must install the gas supply. • Turn off 120V power supply. • Turn off the gas. • Gas is flammable. Do not smoke or provide other ignition sources while working with gas. •...

  • Page 28: Power Supply

    10. Power Supply 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 29 Pre-Wired Electrical Assembly Instructions Electrical Assemblies are installed on the middle rack frame of the following indoor racks for single point electrical connection. WARNING Refer to the Specifications sections in this manual for electrical requirements. Shut off building supply power prior to connecting to TRS electrical assembly.
  • Page 30 IMPORTANT: The outlet is designed for use with Rinnai Tankless Water Heaters only. Do not insert power cords belonging to other appliances or electrical sources into the outlet. Outlet is designed for Rinnai Tankless Water Heaters only NOTICE DO NOT connect the tankless water heaters to the outlet located under the center rack prior to connecting building power supply to the rack electrical gang box.

  • Page 31: Configuring Trw02Cxp And Trw03Cxp Rack Models

    • For the licensed installer / professional. heating applications. • Rinnai strongly recommends installing insulation DO NOT install the MC-195T-US Timer/Controller to the hot water and dedicated return lines to and Control-R Wi-Fi Module together as they are decrease the amount of heat loss.
  • Page 32 Configure TRW02CXP and TRW03CXP Racks for Dedicated Mode (Dedicated Recirculation Return Line) IMPORTANT: This section is only for TRW02CXP and TRW03CXP rack models utilizing a dedicated recirculation return line in the plumbing system. For the TRW02CXP model, use an EZConnect cable to connect the primary unit to the secondary unit.
  • Page 33 Configure TRW02CXP and TRW03CXP Racks for Dedicated Mode (Dedicated Recirculation Return Line) (Continued) Plumbing Diagram (Dedicated Mode) Hot Water Supply Cold Water Supply Gas Supply TRS with SENSEI CX Tankless Water Heaters Installation Instructions...
  • Page 34 Configure TRW02CXP and TRW03CXP Racks for Dedicated Mode (Dedicated Recirculation Return Line) (Continued) Parameter Settings (Dedicated Mode) Refer to the Parameter Setting section of the “Rinnai Tankless Water Heater Installation and Operation Manual” for instructions on accessing and changing parameter settings.
  • Page 35 Configure the parameter settings for Crossover Mode on each water heater. Refer to the “Rinnai Tankless Water Heater Installation and Operation Manual” for detailed instructions. Plumbing Diagram (Crossover Mode)
  • Page 36 Configure TRW02CXP and TRW03CXP Racks for Crossover Mode (Thermal Bypass Valve) (Continued) Parameter Settings (Crossover Mode) Refer to the Parameter Setting section of the “Rinnai Tankless Water Heater Installation and Operation Manual” for instructions on accessing and changing parameter settings.

  • Page 37: Connect Water Heaters

    12. Connect Water Heaters With use of cascade cable(s) up to 24 water heaters can be electronically connected. This connection will rotate water heater operation order to ensure equal usage among the entire system and enables all water heaters connected to modulate operation and function as one hot water source.
  • Page 38 Programming Cascade Communication Parameter Settings (Cascade Communication) Refer to the Parameter Setting section of the “Rinnai Tankless Water Heater Installation and Operation Manual” for instructions on accessing and changing parameter settings. SELECTION SETTING SETTING DESCRIPTION Cascade Secondary (1-23) Primary Units in Standby...

  • Page 39: Installation Checklist

    Complete the following checklist when installation is complete. You should be able to answer YES to each question. If you answer NO to any question, installation is not complete. Refer to the applicable section in the “Rinnai Tankless Water Heater Installation and Operation Manual” for additional information.
  • Page 40 PRESSURE RELIEF VALVE (PRV) YES NO   Is the discharge from the PRV piped to the ground or into a drain system as per local codes? Is the discharge line from the PRV pitched downward and does it terminate 6 in. (152 mm) above the ...

  • Page 41: Appendices

    14. Appendices TRW Replacement Parts 6/7/8/9 12/15 10/13 11/14 ALL TRW MODELS Part Number Ref. Description 106000092 Dirt Leg Gas Flex Line Assembly 109000416 Gas Valve 106000102 107000424 Hot Water Flex Line 107000425 Cold Water Flex Line 109000301 Cush Clamp 2.125 ID 6/7/8/9 Cush Clamp 1.66 ID 109000398...

  • Page 42: Trs Replacement Parts

    TRS Replacement Parts ALL TRS Description Part Number REF. 106000092 Dirt Leg Gas Flex Line Assembly 109000416 Gas Valve 106000102 Hot Water Flex Line 107000424 Cold Water Flex Line 107000425 Cush Clamp 2.63 ID 109000394 (TRS05/06 models) 25/26 Cush Clamp 2.125 ID 109000301 (TRS02/03ILCX and TRS03/04CX models)
  • Page 43 TRS Replacement Parts (Continued) CONDENSATE MANIFOLD RACK DESCRIPTION PART NUMBER 107000393 TRS03IL 3 Connections - In-Line 107000391 TRS03CX 3 Connections - 3B2B 107000392 TRS04CX 4 Connections - 4B2B 107000396 TRS05CX 5 Connections - 5B2B 107000397 TRS06CX 6 Connections - 6B2B TRS with SENSEI CX Tankless Water Heaters Installation Instructions...

  • Page 44: Trx Replacement Parts

    TRX Replacement Parts ALL TRX MODELS Ref. Part Number Description 1 Dirt Leg 106000092 2 Gas Flex Line Assembly 106000190 3 Gas Valve 106000102 4 Hot Water Manifold 104000305 5 Cold Water Manifold 104000306 6 Threaded Tee 106000159 7 Threaded Nipple 106000272 8 Threaded Elbow 106000158...

  • Page 45: Limited Warranty

    Rinnai determines that repair of a product is not possible, Rinnai may replace the product with a comparable product at 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 material or workmanship; damaged by improper installation, use or operation;...
  • Page 46 This appliance is suitable for filling large or whirlpool bath tubs with potable water. 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 of the warranty herein.

This manual is also suitable for:

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