Rinnai RU199i Installation Instructions Manual
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Rinnai RU199i Installation Instructions Manual

Pvc/cpvc common venting
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CERTIFIED TO ANSI Z21.10.3 - CSA 4.3
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
•
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.
— Installation and service must be performed by a licensed professional.
PVC/CPVC Common Venting Installation Instructions
Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
C
US
For U.S. and Canadian Installations
MODELS
RU199i (REU-N3237FF-US)
RU180i (REU-N2934FF-US)
RU160i (REU-N2530FF-US)
RU130i (REU-N2024FF-US)
CU199i (REU-N3237FFC-US)
CU160i (REU-N2530FFC-US)
RUR199i (REU-NP3237FF-US)
RUR160i (REU-NP2530FF-US)
1

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  • Page 1 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. — Installation and service must be performed by a licensed professional. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 2: Table Of Contents

    Exhaust Vent Termination Clearances ....................21 Additional Clearances ........................23 Installation Instructions (Condensate Trap and Drain Pipe) .............. 24 Final Checklist ..........................24 READ AND SAVE THESE INSTRUCTIONS PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 3: Welcome

    Common venting must satisfy all the requirements of the Installation and Operations Manual, as well as the requirements in this manual. For detailed information on the Rinnai Tankless Water Heater, including installation instructions, refer to the Tankless Water Heater Installation and Operation Manual or view an online version at rinnai.us.

  • Page 4: Safety

    DO NOT apply PVC/CPVC glues, solvents, or cleaners to the tankless water heater’s intake or exhaust gasket connections. Failure to correctly assemble the components according to these instructions and the Rinnai water heater installation and operation manual may result in property damage, personal injury, or death.

  • Page 5: About The Common Venting System

    Vent Lengths Common venting allows multiple Rinnai Tankless Water Heaters to share the same vent system. Rinnai Tankless Water Heaters can only be common vented with Schedule 40 PVC/CPVC or with a Rinnai certified common vent system. Example: Rinnai Common Venting...
  • Page 6 Do Not • Do not exceed the maximum number of units indicated in the Rinnai Tankless Water Heater Installation and Operation Manual. • Do not use cellular core PVC/CPVC, Radel, ABS or galvanized material for the exhaust vent.

  • Page 7: Schedule 40 Pvc/Cpvc Common Vent Guidelines

    Condensate trap must include a loop that can hold 6 in. (15 cm) of water. See “PVC/CPVC Common Vent Installation” illustration on this page. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 8: High Altitude Installations

    High altitude installations are certified up to 10,200 ft (3,109 m). • Reference the respective Rinnai Tankless Water Heater Installation and Operation Manual to set the water heater up for the altitude at which they will be operating. High Altitude Derate Tankless water heaters using common venting at altitudes over 2,000 ft (610 m) will automatically derate according to the tables below.

  • Page 9: Common Vent Maximum Equivalent Lengths

    90 ft 1,800,000 1,980,000 41 ft 2,160,000 260,000 90 ft 150 ft 390,000 100 ft 150 ft RU130i 520,000 65 ft 150 ft (REU-N2024FF-US) 650,000 780,000 PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 10: In. Common Venting

    Direct Vent Inline EXHAUST INTAKE Room Air • Refer to the “Combustion Air Requirements” section of this manual for room air requirements. Inline EXHAUST INTAKE INTAKE PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 11: In. Common Venting

    Inline Room Air • Maximum 4 Units • Refer to the “Combustion Air Requirements” section of this manual for room air requirements. Inline Back-to-Back INTAKE INTAKE PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 12: In. Common Venting

    Maximum 12 Units Back-to-Back Inline Room Air • Maximum 12 Units • Refer to the “Combustion Air Requirements” section of this manual for room air requirements. Inline Back-to-Back PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 13: Common Vent Terminations

    Common Vent Terminations Various 3 in., 4 in., and 6 in. Schedule 40 PVC/CPVC Terminations: Product Diagram Description 90° Elbow 45° Elbow PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 14: Sample Horizontal Termination Assembly

    Vent termination per ANSI Z223.1/NFPA 54. For clearances not specified in ANSI Z223.1/NFPA 54, clearances are in accordance with local installation codes and the requirements of the gas supplier. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 15: Sample Vertical Termination Assembly-Room Air

    ANSI Z223.1/NFPA 54, clearances are in accordance with local installation codes and the requirements of the gas supplier. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 16: Maintenance Clearances

    The design of such an enclosure shall be deemed acceptable by the installer or the local inspector. Water Heater Clearances Refer to the Rinnai Tankless Water Heater Installation and Operation Manual for minimum clearance requirements around the water heater.

  • Page 17: Horizontal Termination Clearances

    12 in. minimum from edge of exhaust termination to edge of combustion air termination. There should be a minimum of 36 in. (91 cm) between exhaust terminations in multiple common vent installations. Refer to the Rinnai Tankless Water Heater Installation and Operation Manual for maximum vent lengths based on the vent diameter installed.

  • Page 18: Combustion Air Requirements

    A confined space must have two combustion air openings. Size the combustion air openings based on the BTU input for all gas utilization equipment in the space and the method by which combustion air is supplied. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
  • Page 19 (305 mm) of the top and one commencing within 12 in. (305 mm) of the bottom of the confined space. The openings shall communicate to the outside by one of two ways. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
  • Page 20 Note: If ducts are used, the cross sectional area of the duct must be greater than or equal to the required free area of the openings to which they are connected. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 21: Exhaust Vent Termination Clearances

    [2] Permitted only if veranda, porch, deck, or balcony is fully open on a codes d’installation locaux et aux exigences du foumisseur de minimum of two sides beneath the floor. gaz.) PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
  • Page 22 [2] Permitted only if veranda, porch, deck, or balcony is fully open on a codes d’installation locaux et aux exigences du foumisseur de minimum of two sides beneath the floor. gaz.) PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 23: Additional Clearances

    Represents the exhaust vent of the common venting. Represents the combustion air vent of the common venting. 12 in. 60" (30 cm) 36 in. (91 cm) between terminals at different levels PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.

  • Page 24: Installation Instructions (Condensate Trap And Drain Pipe)

    □ The installation conforms with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1. PVC/CPVC Common Venting Installation Instructions Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
  • Page 25 100000625(01) 12/2018...

This manual is also suitable for:

Ru180iRu160iRu130iCu199iCu160iRur199i ... Show all

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