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Ruud 801MSS Series - User Manual

Ruud 801MSS Series
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ISO 9001:2008
INSTALLATION INSTRUCTIONS
FOR UPFLOW/HORIZONTAL SINGLE STAGE
GAS FURNACES
(-)801S UPFLOW/HORIZONTAL SERIES
(-)801P UPFLOW/HORIZONTAL SERIES AND
(-)(-)801MSS UPFLOW/HORIZONTAL SERIES
(-)(-)801MSP UPFLOW/HORIZONTAL SERIES
U.L. and/or C.S.A. recognized fuel gas and CO (carbon monoxide) detectors are rec-
ommended in all applications, and their installation should be in accordance with the
manufacturer’s recommendations and/or local laws, rules, regulations, or customs.
92-24161-142-01
SUPERSEDES 92-24161-142-00
Factory Use Only
ST-A1220-01-X0

Table of Contents

Questions and Answers

  • A
    Andrea WilsonAug 7, 2025
    What to do if my Ruud 801MSS Furnace has an unexpected flame?
    • V
      Valerie LongAug 7, 2025
      If your Ruud Furnace experiences an unexpected flame, examine the gas supply and manifold pressure to ensure they are within the correct parameters.

Ruud 801MSS Series Specifications

General IconGeneral
Model Number801MSS Series
TypeUpflow/Horizontal
Fuel TypeNatural Gas
Efficiency80% AFUE
Blower MotorMulti-speed
StagesSingle-stage
IgnitionDirect Spark Ignition
Heat ExchangerAluminized Steel

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