Rinnai RUC80i User Manual



 

 
• 
• 
• 
• 
 


WARNING







FOR INDOOR APPLICATIONS ONLY
RUC80i
RUC90i
RUC98i
FOR OUTDOOR APPLICATIONS ONLY
RU80e
RU90e
RU98e



 

Rinnai RUC80i Specifications

General

Brand	Rinnai
Model	RUC80i
Category	Water Heater
Language	English

Summary

Important Safety Information

Safety Behaviors and Practices for the Consumer and Installer

Guidelines for safe handling, operation, and maintenance of the water heater.

Installation Instructions (for the licensed professional)

Installer Qualifications

Required skills and training for qualified installers.

General Instructions

Key directives and prohibitions for proper installation.

Direct Vent Terminal Clearances (Indoor Units)

Maximum Vent Length

Installation of Venting (indoor models only)

Twin Pipe PVC/CPVC Vent Installation

Certified PVC/CPVC Vent Termination Options

Condensate (indoor models only)

Checklist for Venting and Condensate (indoor models only)

Verification items for the venting and condensate system.

Installation of Plumbing

Isolation Valves and Pressure Relief Valve (PRV)

Installation of Gas Supply

Connect Electricity

Adjustment for High Altitude Installations

Setting DIP switches for altitude pressure adjustment.

Installation of Temperature Controller

Controller Location

Guidelines for optimal placement of the temperature controller.

Final Checklist

Technical Data

Pressure Drop and Water Flow Curves

Recirculation Mode

Operation Instructions

Consumer Operation Guidelines for the Safe Operation of your Water Heater

Instructions for safe use and operation by consumers.

How to use the Temperature Controller

Guide on operating the MC-91-2 temperature controller.

How to Set the Temperature

Steps to adjust the water heater's output temperature.

Diagnostic Codes

Required Maintenance

Flushing the Heat Exchanger

Procedure to clean scale buildup from the heat exchanger.

State Regulations

Replacement Parts

Limited Warranty for Ultra Series RUC80i, RUC90i, RUC98i, RU80e, RU90e, RU98e

What will Rinnai do?

Explains Rinnai's responsibilities for warranty claims.

How do I get service?

Information on obtaining professional repair services.

EXTEND THE LABOR COVERAGE UNDER YOUR LIMITED WARRANTY*