Rheem classic R801S series User Manual

Rheem Classic
®
Series
Upflow/Horizontal Gas Furnace
FORM NO. G11-542 REV. 2
R801S- (Upflow/Horizontal) Series
80% A.F.U.E.†
Input Rates 50-150 kBTU
Air
Gas Furnaces
R801S (UF/HZ) Series
Annual Fuel Utilization Efficiency - AFUE
THIS MODEL
ENER UIDE
97%78%
HIGH
MID
82% 88%
80.0%
✝A.F.U.E. (Annual Fuel Utilization Efficiency) calculated in accordance with
Department of Energy test procedures.
• 80% residential Gas Furnace CSA certified
• 3 way multi poise design UF / HZ
• PlusOne
™
Diagnostics — 7 Segment LED all units
• PlusOne
™
Ignition System – DSI for reliability and longevity
• Heat exchanger is removable for improved serviceability.
Aluminized steel construction provides maximum corrosion
resistance and thermal fatigue reliability.
• Solid doors provide quiet operation
• Low profile 34" cabinet ideal for space constrained
installations
• Blower shelf design – serviceable in all furnace orientations
• Hemmed edges on cabinets and doors
• 1/4 turn door knobs for tool less access
• Integrated Controls board features dip switches for easy
system set up
• QR codes for quick access to product information from your
smart phone or tablet

Rheem classic R801S series Specifications

General

Brand	Rheem
Model	classic R801S series
Category	Furnace
Language	English

Summary

Rheem Classic Series Furnace Features

Key Residential Furnace Features

CSA certification, multi-poise design, diagnostics, ignition system, heat exchanger, and construction details.

Design and Operational Features

Low profile cabinet, serviceable blower shelf, hemmed edges, tool-less access, and QR codes.

Standard and Optional Equipment

Included Standard Equipment

Details on induced draft, pressure switch, gas control, blower motor, and transformer.

Available Optional Equipment

Filter frames, return air cabinets, and conversion kits for L.P. gas.

Mobile Home Installation Warning

Cautionary note regarding the furnace's approval for use in mobile homes.

Model Specifications and Features

Model Feature Highlights

Recap of key features like 80% AFUE, multi-poise design, and diagnostics.

Physical Data and Performance Specs

Table detailing input/output, blower specs, motor data, and temperature rise.

Model Number Identification System

Decoding the Model Number

Explanation of each character's meaning in the R801S model designation.

Upflow Application Dimensional Data

Upflow Furnace Dimensions Diagram

Visual representation of furnace dimensions for upflow installation.

Upflow Dimensional Specifications Table

Table listing dimensions (A-F) and clearances for upflow models.

Horizontal Application Dimensional Data

Horizontal Furnace Dimensions Diagram

Visual representation of furnace dimensions for horizontal installation.

Horizontal Dimensional Specifications Table

Table listing dimensions (A-F) and clearances for horizontal models.

Horizontal Installation Warning

Warning against installing the furnace on its back with doors facing upwards.

Blower Performance Data

Blower Performance Tables

Detailed charts showing CFM output at various static pressures and speeds.

Accessories and Altitude Information

Filter Rack and Flue Adapter Accessories

Details on filter racks, base plates, and flue adapters for different models.

Indoor Coil Casings

List of specific indoor coil casing models.

High Altitude Installation Guidelines

Instructions and notes for installing the furnace at high altitudes.

Limited Warranty Terms

General Limited Warranty Statement

Rheem's commitment to replacing parts that fail under normal use.

Warranty Duration

Specifies warranty periods for conditional parts and the heat exchanger.