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American Standard RU 75-76 User Manual

American Standard RU 75-76
20 pages
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operating, installation and
service manual
Commercial Gas Water Heater
CA 91768
1(800) 900-9063 • (909) 392-0230 • Fax (909) 392-7302
ULN 75-76, 100-83, 100-76
ULN 75-76R, 100-83R, 100-76R
RU 75-76, 100-83, 100-76
MODELS:
REV. 01 April 2013
561 New York Drive, Pomona
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American Standard RU 75-76 Specifications

General IconGeneral
BrandAmerican Standard
ModelRU 75-76
Capacity75 gallons
Diameter22 inches
Warranty6 years

Summary

Commercial Gas Water Heater Manual Introduction

Product Overview and Manual Scope

Details the operating, installation, and service manual for commercial gas water heaters.

General Safety Guidelines and Warnings

Provides critical safety warnings for installation, operation, and potential hazards.

Specific Hazard Warnings

Covers burn hazards, fire, explosion, and carbon monoxide poisoning risks.

Installation Requirements and Procedures

Warranty Limitations and Consumer Responsibilities

Outlines manufacturer warranty terms and user responsibilities for proper installation.

Installation Location and Clearance Requirements

Specifies proper placement, clearances from combustibles, and installation site considerations.

Combustion Air and Ventilation Requirements

Specifies air supply needs for combustion and ventilation, including confined spaces.

Draft Hood and Venting System Guidelines

Covers draft hood installation, flue dampers, and general venting system guidelines.

Water and Gas Piping Connections

Guidance on connecting water supply lines and gas piping, including unions and drip legs.

Typical Installation Configurations

Illustrates common installation setups for commercial gas water heaters.

Air Supply Requirements for Combustion

Details requirements for outdoor and indoor air supply for combustion and ventilation.

Temperature and Pressure Relief Valve Installation

Instructions for installing the T&P relief valve and its discharge line for safety.

Electrical Connections and Heater Filling

Covers electrical grounding, junction box, and the procedure for filling the water heater.

Installation Checklist

A comprehensive checklist to ensure all installation steps and safety requirements are met.

Operation and Maintenance Procedures

Wiring Diagrams and Damper Operation Sequence

Illustrates electrical wiring and explains the sequence of operation for the flue damper.

Heater Operation Sequence

Describes the step-by-step process for the water heater's operation cycle.

Gas Type Specific Operation and Safety

Covers operation for Natural Gas and L.P. models, including smelling gas and LP specific safety.

Tank Cleaning and Vacation Mode Procedures

Instructions for cleaning the tank and preparing the unit for periods of non-use (vacation).

Combination Heating System Configurations

Guidance for using the heater in combined potable water and space heating systems.

Pre-Operation Safety and Instructions

Read safety warnings and follow operating instructions before starting the appliance.

Temperature Control and Safety Limit Settings

Details thermostat adjustment, high-temperature limit, gas pressure, and emergency shutdown.

Burner and Pilot Maintenance

Provides instructions for periodic maintenance of the main burner and pilot assembly.

Pilot Burner and Water Heater Sounds

Describes the pilot and main burner, and common noises emitted by the water heater.

Draining Procedures and Common Complaints

Instructions for draining the tank and troubleshooting common operational issues.

Parts and System Diagrams

Water Heater Replacement Parts List

Lists part numbers, descriptions, and quantities for ordering replacement components.

Replacement Parts Illustration

Provides a visual illustration of the water heater's components for part identification.

Combination Heating System Piping Arrangement

Illustrates suggested piping for combined potable water and space heating systems.

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