Rheem CLASSIC 90 RGTJ- SERIES User Manual

FORM NO. G11-464 REV. 7
Supersedes Form No. G11-464 Rev. 6
GAS FURNACES
Annual Fuel Utilization Efficiency - AFUE
THIS MODEL
ENER UIDE
97%78%
HIGH
MID
82% 88%
92.0%
RGTJ- SERIES
Models with Input Rates
from 45,000 to 120,000 BTU/HR
[13.19 to 35.17 kW]
(All Models 90% A.F.U.E.† or Above)
CLASSIC
®
90
HIGH EFFICIENCY
DOWNFLOW/
HORIZONTAL
GAS FURNACES
The Rheem
®
Classic
®
90 High Efficiency line of downflow/
horizontal gas furnaces are designed for utility rooms, clos-
ets, alcoves, attics or crawl spaces. The RGTJ is shipped in
the downflow configuration and is easily converted for hori-
zontal left-hand airflow applications.
The design is certified by CSA.
Features
■ Low profile “34 inch” design is lighter and easier to handle
and leaves room for optional accessories.
■ Top electrical connections, left or right gas and conden-
sate drainage connections on downflow models.
■ Condensate drain for horizontal application provided
standard.
■ Integrated control board manages all operational functions
and provides hookups for an electronic air cleaner.
■ A slow-opening gas valve and a specially designed
inducer system make it one of the quietest furnaces on
the market today.
■ Galvanized steel cabinet.
■ Optional indoor or outdoor combustion air.
■ Control board diagnostics.
A variety of cooling coils and plenums designed to use with
the Classic 90 gas furnaces are available as optional acces-
sories for air conditioning models.
✝A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with Department
of Energy test procedures.

Rheem CLASSIC 90 RGTJ- SERIES Specifications

General

Brand	Rheem
Model	CLASSIC 90 RGTJ- SERIES
Category	Furnace
Language	English

Summary

Rheem Classic 90 High Efficiency Gas Furnaces

Key Product Features

Highlights the low profile design, electrical connections, and quiet operation.

CSA Design Certification

Confirms the furnace design has been certified by CSA.

Rheem Gas Furnace Components and Equipment

Internal Component Identification

Labels major internal parts like heat exchanger, ignitor, and control board.

Standard & Optional Equipment

Lists the factory-included and optional accessories.

Mobile Home Installation Warning

Crucial safety notice against using this furnace in mobile homes.

RGTJ Series Gas Furnace Specifications

Physical Data and Performance

Details dimensions, weights, airflow, and efficiency ratings.

Model Identification Guide

Explains how to decipher Rheem RGTJ model numbers.

Limited Warranty Overview

Outlines the terms and duration of the product warranty.

Downflow Model Dimensions & Clearances

Downflow Dimensional Drawings

Provides detailed diagrams of downflow unit dimensions.

Required Installation Clearances

Specifies minimum air clearances for safe downflow installation.

Model Shipping Weights

Lists the approximate shipping weight for each downflow model.

Horizontal Model Dimensions & Clearances

Horizontal Dimensional Drawings

Illustrates the dimensions for horizontal furnace configurations.

Horizontal Clearance Requirements

Details the minimum air clearances for horizontal installations.

RGTJ Series Blower Performance Data

Airflow Delivery Charts

Tables showing CFM output at various static pressures and speeds.

Blower Speed Settings

Notes on recommended blower speeds for optimal operation.

Furnace Accessories & High Altitude Options

Optional Furnace Accessories

Lists of available kits and components for customization.

Plenum & Coil Matching

Guides for selecting correct plenum adapters for coils.

High Altitude Installation Kits

Information and kits for furnaces operating at higher elevations.

Installation Prerequisites & Manufacturer Info

Pre-Installation Requirements

Crucial steps and checks before installing the furnace.

Rheem Air Conditioning Division

Contact and location details for the manufacturer.