Rheem 90RS09EJS Series - User Manual

92-24161-66-03
SUPERSEDES 92-24161-66-02
INSTALLATION INSTRUCTIONS
FOR HIGH EFFICIENCY CONDENSING GAS FURNACES
90RS, 90RT UPFLOW SERIES
90TS DOWNFLOW/HORIZONTAL SERIES
U.L. recognized fuel gas and CO (carbon monoxide) detectors are recommended in all
applications, and their installation should be in accordance with the manufacturer’s
recommendations and/or local laws, rules, regulations, or customs.
Upflow Models Downflow/Horizontal Models
Model Number Input (Btu) Tons Model Number Input (Btu) Tons
90RS04EES** 45,000 3 90TS04EES** 45,000 3
90RS06EES** 60,000 3 90TS06EES** 60,000 3
90RT07EES** 75,000 3 90TS07EES** 75,000 3
90RT07EFS** 75,000 4 90TS07EFS** 75,000 4
90RS09EJS** 90,000 4 90TS09EJS** 90,000 4
90RS09EGS** 90,000 5 90TS09EGS** 90,000 4.5
90RS10EGS** 105,000 4.5 90TS10EGS** 105,000 4.5
90RS12EHS** 120,000 5 90TS12EHS** 120,000 5

Rheem 90RS09EJS Series Specifications

General

Brand	Rheem
Model	90RS09EJS Series
Category	Furnace
Language	English

Summary

SAFETY INFORMATION

General Safety Precautions

Covers fundamental safety principles, potential hazards, and critical warnings for installation and operation.

LOCATION REQUIREMENTS AND CONSIDERATIONS

VENTING AND COMBUSTION AIR PIPING

COMBUSTION AND VENTILATION AIR

Non-Direct Furnace Installations

Specifies air requirements for furnaces drawing combustion air from the installation area.

Connection to Furnace

VENT PIPE INSTALLATION

Non-Direct Vent Installation Guidelines

Specific rules for installing vent pipes for non-direct vent furnace configurations.

Standard Installations

Non-Direct Vent Termination Location Requirements

DIRECT VENT INSTALLATIONS

Installation Guidelines

Core requirements for direct vent system installation, including pipe sizing and materials.

Combustion Air for Direct Vent Installations

Specifics on supplying combustion air for direct vent furnaces using factory-designed systems.

CONDENSATE DRAIN;NEUTRALIZER

General Information

CONDENSATE DRAIN FOR HORIZONTAL INSTALLATION

GAS SUPPLY AND PIPING

Gas Supply

Information on gas types, conversion kits, and recommended gas/CO detectors.

Gas Piping

Standards for installing gas piping, including pipe sizing, pressure drop, and drip legs.

Gas Pressure

LP CONVERSION

SETTING GAS PRESSURE

ELECTRICAL WIRING

Line Voltage Connections

Guidelines for connecting the main power supply, including safety precautions and grounding.

Thermostat

90+ HIGH ALTITUDE INSTRUCTIONS

90 Plus Condensing Gas Furnaces High Altitude Kits

Details on high altitude conversion kits, pressure switches, and orifice selection.

Natural Gas

LP GAS AT HIGH ALTITUDE ELEVATIONS

Orifice Installation

Procedures for selecting and installing LP gas orifices for high altitudes, considering heating value.

Alternate Method for Canadian High-Altitude Derate

START-UP PROCEDURES

Sequence of Operation

ADJUSTING OR CHECKING FURNACE INPUT

Setting Input Rate

TROUBLESHOOTING

INTEGRATED FURNACE CONTROL (IFC) TROUBLESHOOTING GUIDE