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Rheem (-)802PA050314MSA User Manual

Rheem (-)802PA050314MSA
52 pages
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ISO 9001:2008
INSTALLATION INSTRUCTIONS
FOR UPFLOW/HORIZONTAL TWO STAGE
GAS FURNACES
(-)802P UPFLOW/HORIZONTAL SERIES
(-)(-)80MDP 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.
92-24161-146-02
SUPERSEDES 92-24161-146-01
Factory Use Only
S
T-A1220-01-X0

Table of Contents

Questions and Answers:

Rheem (-)802PA050314MSA Specifications

General IconGeneral
BrandRheem
Model(-)802PA050314MSA
CategoryFurnace
LanguageEnglish

Summary

General Information

Furnace Components

Identifies and labels various parts of the furnace unit.

Furnace Design and Standards

Details CSA certification, gas types, and installation codes for furnaces.

Receiving and Inspection

Receiving Instructions

Procedures for inspecting furnace cartons and contents for transit damage upon delivery.

California Proposition 65 Information

Proposition 65 Warnings and Consumer Education

Specific warnings and consumer education for California residents regarding product chemicals.

Installation Checklist

Gas Supply Checklist

Items to verify for gas supply installation, including pipe size and pressure.

Electrical Checklist

Items to verify for electrical connections, including voltage and grounding.

Furnace Installation Checklist

Items to verify for furnace installation, including clearances.

Duct Static Pressure Checklist

Items to verify for duct static pressure and temperature rise.

Venting Checklist

Items to verify for proper venting installation and clearances.

Combustion Air Checklist

Items to verify for adequate combustion air supply and openings.

Safety Information

Installation Prohibitions and Hazards

Warns against mobile home installation, bypass of safety switches, and improper gas use.

Airflow and Ventilation Requirements

Highlights the need for proper combustion air and sealed ducting to prevent hazards.

System Operation and Maintenance Precautions

Advises on filter use and drain pan installation to prevent damage and ensure safety.

Safety Precautions

Blower Door and Operation Safety

Warns against operating without the blower door and maintaining correct temperature rise.

Construction Site Heating and Ducting

Details requirements for heating during construction and proper duct sealing.

Indoor Air Quality and Efficiency

Discusses duct system impact on IAQ, efficiency, and recommends professional checks.

Location Requirements

Garage Installation Safety

Mandates specific height and protection for furnaces installed in garages to prevent fire/explosion.

Site Selection Guidelines

Provides criteria for choosing an installation site considering ductwork and gas piping.

Clearance and Accessibility Requirements

Details required clearances for fire protection and service access.

Location Requirements

Combustible Floor Installation

Discusses installation on combustible floors and warnings against direct carpet or tile installation.

Combustible Material Clearance

Emphasizes keeping the area around the furnace clear of flammable materials.

Ducting

Upflow Duct Installation

Detailed steps for connecting ductwork in an upflow furnace configuration.

Ducting Safety Warnings

Alerts about airflow values, return air sources, and blower door safety.

Ducting

Horizontal Unit Duct Installation

Steps for installing ductwork on horizontal furnaces, including return air connections.

Combustion and Ventilation Air

Combustion Air Requirements

Outlines necessary fresh air provisions for proper combustion and ventilation.

Overtemperature Safety Switches

Details the function and importance of overtemperature safety switches.

Combustion Air Requirements

Confined and Unconfined Spaces

Specifies combustion air needs for both confined and unconfined installation spaces.

Unconfined Space Air Requirements

Details requirements for combustion air in unconfined installation areas.

Confined Space Air Requirements

Details requirements for combustion air in confined installation areas.

Combustion Air Intake and Venting

Air Intake Pipe Connection

Guidelines for connecting the combustion air intake pipe, including elbow usage.

Combustion Air Intake Options

Combustion Air from Attic

Procedures for using attic air for combustion, including elbow installation and pipe length.

Venting

Draft Inducer and Venting

Details about the draft inducer and warnings related to vent pipe attachment.

Furnace Category and Venting Notes

Information on furnace category, replacement venting, and vent pipe diameter selection.

Vertical "B-1" Venting

Guidelines for vertical venting using Type B-1 vent pipe and related support requirements.

Venting Systems

Vertical Vent System Requirements

Details on vent termination, slope, support, and connectors for vertical systems.

Special Vent Systems (SVS) Statement

Manufacturer's statement regarding HTPV pipe usage in Category III venting.

Venting Systems

Power Vent Systems

Guidelines and contact information for using power venter models for horizontal venting.

Existing Vent Systems Retrofit

Critical instructions for inspecting and servicing existing vent systems during replacement.

Gas Supply and Piping

Natural Gas and Propane Safety

Crucial safety information for natural gas and propane fuel usage and leak detection.

Gas Supply Installation Requirements

Guidelines for gas piping installation, codes, and regulators.

Gas Piping

Fuel Type Conversion Warning

Warns about conversion to LP gas and using correct kits to prevent hazards.

Gas Piping Installation Standards

Covers local codes, supply lines, shut-off valves, and connection practices.

Gas Pressure

Supply Pressure Requirements

Specifies minimum and maximum supply pressures for natural gas and LP gas.

High Altitude Input Adjustment

Advises on adjusting input rating and orifices for elevations above 2000 ft.

Gas Valve Operation

Describes the 24-volt gas valve, its pressure regulation, and slow-opening function.

Setting Gas Pressure

Supply Gas Pressure Measurement

Details how to measure and adjust the incoming gas supply pressure.

Manifold Gas Pressure Measurement

Procedures for measuring and adjusting manifold gas pressure for optimal furnace operation.

LP Conversion

NOx Model LP Conversion

Procedures for converting NOx insert models to LP gas.

Orifice Installation for LP Conversion

Steps for changing orifice spuds for LP gas conversion or altitude adjustments.

Electrical Wiring

Electrical Connection Requirements

Information on voltage, circuit protection, and connection points for wiring.

Reversing Junction Box Location

Detailed steps for moving the electrical junction box to the opposite side of the cabinet.

Electrical Wiring and Thermostat

Thermostat Compatibility and Wiring

Guidelines for thermostat compatibility and low-voltage wiring connections.

Accessories

Electronic Air Cleaner and Humidifier

Power supply details for optional electronic air cleaners and humidifiers.

Flue Adapter and Chimney Adapter

Information on flue and chimney adapters for furnace installation.

Furnace Filters

Recommendations for keeping furnace filters clean for optimal performance.

Twinning Furnaces

Furnace Twinning Installation Guidelines

Procedures for installing two furnaces side-by-side, controlled by a common thermostat.

UT Electronic Controls for Twinning

Information on using UT Electronic Controls for twinning furnace operations.

High Altitude Adjustments

Natural Gas at High Altitudes

Guidelines for installing and adjusting furnaces at high altitudes using natural gas.

Orifice Ordering Information

Instructions on how to select and order replacement orifices based on altitude.

High Altitude LP Gas

LP Gas at High Altitudes

Guidelines for LP gas furnace installation and orifice selection at high altitudes.

Start-Up Procedures

Furnace Start-Up Steps

Sequential instructions for initiating furnace operation and setting thermostat.

Furnace Shutdown Procedure

Steps to safely turn off the furnace, including a critical warning.

Sequence of Operation

Describes the step-by-step process of furnace operation with UT controls.

Fault Codes and Diagnostics

Diagnostics and Fault Code Display

Explains the diagnostic display and lists normal operating and fault codes.

Dual Fault Display Handling

Describes how the system displays and prioritizes simultaneous faults.

Lockout Conditions

Five-Minute Lockout

Explains the cause and reset procedure for a five-minute soft lockout.

One-Hour Lockout

Details the causes and automatic reset for a one-hour soft lockout.

Hard Lockout Causes

Lists the conditions that trigger a hard lockout, which cannot be reset by cycling the heat call.

Field Selections and Adjustments

Dipswitch Settings for Display Orientation

Instructions for configuring the seven-segment display orientation using dipswitch SW1.

Dipswitch Settings for Blower Off Delay

How to set cooling and heat blower off delay times using dipswitches SW2-SW5.

Field Selections and Timing

Auto-Stage Dipswitch Settings

Configuration of auto-staging using SW6 and SW7 for two-stage furnaces.

Manual Fault Clearing

Procedure for manually clearing the fault code memory buffer using dipswitch SW8.

Fault Recall and Flame Status

How faults are recalled and the function of the flame status LED indicator.

Furnace Input Adjustment

Adjusting or Checking Furnace Input

Steps for adjusting and verifying the furnace's input rate using gas pressure and orifices.

Setting Input Rate

Setting Input Rate

Instructions for setting the furnace input rate based on gas heating value and orifices.

Airflow and Temperature Rise

Temperature Rise Check Procedure

Steps for checking and verifying the furnace's temperature rise.

Temperature Rise Adjustment Warning

Emphasizes adjusting temperature rise to the middle of the range to prevent damage.

Blower Speed Selections

Blower Speed Selection Guide

Instructions for selecting blower speeds for heating, cooling, and fan operation.

Safety Features

Limit Control Operation

Explains the high limit control and common causes for its activation.

Flame Roll-Out and Pressure Switches

Details the function of flame roll-out and pressure safety switches.

Maintenance

Filter Maintenance

Emphasizes the importance of keeping filters clean to prevent issues.

Motor Lubrication and Cleaning

Instructions regarding motor lubrication and periodic cleaning.

System Operation and Maintenance

Customer Advice for System Operation

Tips for customers to ensure efficient and economical system operation.

Annual Inspection Recommendations

Guidelines for annual inspection of flue passageways, burners, and markings.

Replacement Parts and Diagnostics

Information on obtaining replacement parts and using diagnostics.

Diagnostics Flowchart

Diagnostics Flowchart

A step-by-step flowchart to help diagnose furnace operational issues.

Wiring Diagram

Electrical Wiring Diagram

Provides a comprehensive wiring diagram for the furnace control system.

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