Rinnai RU98i - User Manual

1 Rinnai CVent
Common Vent Installaon Manual
For the RU98i (REU-KB3237FFUD-US), RUC98i (REU-KBD3237FFUD-US), and
C199i (REU-KBD3237FFUDC-US) Condensing Water Heaters
This manual is a supplement to the appliance manual.
Addional informaon can be obtained from the Rinnai Water Heater Installaon and
Operaon Manual.
— Do not store or use gasoline or other ammable 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 instrucons.
 If you cannot reach your gas supplier, call the re department.
— Installaon and service must be performed by a licensed professional.
If the informaon in these instrucons is not followed exactly, a re or explosion
may result causing property damage, personal injury or death.
WARNING
Certified to ANSI Z21.10.3 - CSA 4.3
For U.S. and Canadian Installations
This enre manual must be le for the consumer. The consumer must read and
refer to this manual for proper operaon and maintenance of the common vent system.
C
US

Summary

Installer Qualifications and Safety

Installer Qualifications

Outlines the necessary skills and licensing for installers of the system.

Safety Symbols and Warnings

Explains safety symbols and important warnings for installation and operation.

Installation Guidelines

High Altitude Installations

Details de-rating for water heaters at altitudes over 2,000ft.

Water Heater Installation

Termination and Clearances

Termination Kits

Maximum Equivalent Vent Length

Provides rules for calculating maximum equivalent pipe lengths for venting.

Vent Termination Clearances

Combustion Air Requirements

Space Requirements for Combustion Air

Intake Air Methods

Installation Procedures

Exhaust Vent Installation

Steps for installing exhaust vent components and appliance adapters.

Common Venting Configurations

Water Heater Spacing

Condensate Management and Maintenance

Condensate Trap and Drain Pipe

Check Valve Maintenance

Final Installation Check List

A comprehensive list of checks before final system release.

Rinnai RU98i Specifications

General

Type	Tankless
Category	Residential
Fuel Type	Natural Gas or Propane
Flow Rate	9.8 GPM
Energy Factor	0.93
Gas Connection	3/4 inch
Water Connection	3/4 inch
Electrical Requirements	120V, 60Hz
Ignition Type	Electronic
Maximum BTU	199, 000 BTU
Minimum BTU Input	15, 000 BTU
Venting	Direct Vent
Temperature Range	98°F to 140°F
Weight (alternative)	44 lbs
Warranty	12 years heat exchanger, 5 years parts, 1 year labor