Bosch BGH96M080C4A User Manual

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

Bosch BGH96M080C4A Specifications

General

Brand	Bosch
Model	BGH96M080C4A
Category	Furnace
Language	English

Summary

Key Symbols and Safety Instructions

Safety

General safety instructions for installers, users, and servicers.

Codes and Standards

Safety

Lists safety codes like NFGC, ANSI Z223.1, NFPA 54, and Canadian codes.

Combustion and Ventilation Air

Gas Piping and Gas Pipe Pressure Testing

Electrostatic Discharge (ESD) Precautions Procedure

Installation

Upflow Installation

Instructions for installing the furnace in an upflow configuration, including return air.

Horizontal Installation

Condensate Line and Over Flow Pressure Switch

Combustion Air and Vent System

Combustion Air and Vent Safety

Safety precautions and code compliance for combustion air and vent system installation.

Combustion Air/Vent Pipe Sizing

Vent and Supply (Outside) Air Safety Check Procedure

Gas Supply and Piping

General

Information on gas types, input ratings, and required supply pressures for safe operation.

High Altitude Derate

Propane Gas (LP) Conversion

Gas Piping Connections

Gas Piping Checks

Start-Up, Adjustment, and Safety Check

Start-Up Procedures

Step-by-step instructions for safely starting up the furnace.

Furnace Start-Up

Gas Manifold Pressure Measurement and Adjustment

Gas Input Rate Measurement (Natural Gas Only)

Temperature Rise Adjustment

Circulator Blower Speed Adjustment

Safety Circuit Description

General

Overview of the furnace's safety circuits and their role in operation.

Integrated Control Module

Overflow Protection Pressure Switch (Overflow Switch)

Flame Sensor

Troubleshooting

Electrostatic Discharge (ESD) Precautions

Resetting From Lockout

Procedures for resetting the furnace after a lockout condition occurs.

Troubleshooting Chart

Guide to diagnosing operational problems using LED fault codes.

Service and Maintenance Procedures

Annual Inspection

Flame Sensor (Qualified Service Technicians Only)

Ignitor (Qualified Service Technicians Only)

Inspecting the Heat Exchanger (Qualified Service Technicians Only)

Before Leaving Installation

Wiring Diagram