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Bosch BGH96M080B3A User Manual

Bosch BGH96M080B3A
56 pages
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Bosch 96% AFUE Gas Furnace BGH96 Model
Condensing Gas Furnace
Installation, Operation, and Maintenance Manual
3124627

Table of Contents

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Bosch BGH96M080B3A Specifications

General IconGeneral
Model NumberBGH96M080B3A
CategoryFurnace
Fuel TypeNatural Gas
AFUE96%
Blower Motor TypeECM
StagesTwo-Stage
Heating Capacity80, 000 BTU/h

Summary

Key to Symbols and Safety Instructions

Safety

Provides installation and user safety guidelines for the furnace.

Introduction and Cautions

Installation and Operation Cautions

Highlights critical installation and operation warnings, including fire and CO hazards.

Codes and Standards

Safety Codes

Lists US and Canadian safety codes for installation and operation.

Combustion Air and ESD Precautions

Horizontal Installation Methods

Condensate Management

Horizontal Right-Hand Installation

Horizontal Left-Hand Installation Details

Combustion Air and Vent System

Vent Clearances

Combustion Air Supply Options

Vent and Supply Air Safety Check

Gas Supply and Piping

High Altitude Derate

Propane Gas Conversion and Piping

Gas Piping Checks

Electrical Connections

Field Wiring and Accessory Connections

Start-Up, Adjustment, and Safety Check

General Precautions and Furnace Start-Up

Lists safety checks and the step-by-step procedure for starting the furnace.

Sequence of Operation

Heating Mode and Timing Specifications

Describes the heating sequence and timing parameters for furnace operation.

Gas Manifold Pressure Adjustment

Manifold Pressure Measurement and Adjustment

Details how to measure and adjust gas manifold pressure for optimal performance.

Gas Input Rate and Temperature Rise

Natural Gas Input Rate and Temperature Rise Adjustment

Explains how to measure gas input rate and adjust air temperature rise.

Circulator Blower Speed Adjustment

Blower Speed Settings and Procedure

Provides a table and procedure for adjusting blower speed for optimal performance.

Operational Checks

Safety Circuit Description

Integrated Control Module

Explains the function of the integrated control module in furnace operation.

Limit Switches and Pressure Switches

Describes various safety limit switches and their functions.

Troubleshooting and Lockout Reset

ESD Precautions and Resetting Lockout

Reiterates ESD precautions and explains methods to reset the furnace after a lockout.

Troubleshooting Fault Codes

Furnace Fails to Operate (RED LED Faults)

Details troubleshooting steps for RED LED fault codes related to furnace failure.

Troubleshooting Fault Codes (Continued)

Abnormal Operation (AMBER/GREEN LED Faults)

Covers troubleshooting for AMBER and GREEN LED fault codes during operation.

Service and Maintenance Procedures

Annual Inspection and Filter Maintenance

Lists annual inspection items and guides on filter maintenance and replacement.

Component Maintenance and Replacement

Wiring Diagram

Furnace Wiring Schematic

Presents the detailed wiring diagram for furnace connections and components.

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