User's Information Manual Bosch 96% AFUE Gas Furnace | 11Bosch Thermotechnology Corp. | 11.2018 Data subject to change

Bosch BOSBGH96M100D5A User's Information Manual

Key to Symbols and Safety Instructions

Troubleshooting

Error Flash Codes

Flashes (System Lock-Out due to Failed Ignition 8 Flashes (System Lock-Out due to too Many Flame Dropouts)

Flashes (Low Fire Pressure Switch Stuck Closed)

Flashes (Pressure Switch Cycle Lockout 13 Flashes (High Pressure Switch Stuck Open)

Flashes (Limit/Rollout Switch Open More than 15 Mins 11 Flashes (Limit/Rollout Switch Open from 5 to 15 Mins)

Flashes (Incorrect Polarity of L1/L2)

Rapid Flashes (Low Flame)

Appendix A - Sequence of Operation

A1     Heating Modes

A1.2 High Fire Heating Mode Logic (W1+W2 Signal)

A2     Ignition Failure and Reignition Sequence

Troubleshooting Guide Bosch 96% AFUE Gas Furnace

BGH96 Series

operating instructions

Dimensions

Introduction

Codes and Standards

Combustion and Ventilation Air

Location

Installation

Horizontal Installation

Condensate Line and Over Flow Pressure Switch

Filter Arrangement

Air Ducts

Combustion Air and Vent System

Comnustion Air And Vent Piping Assembly

Combustion Air / Venting

Vent System

Combustion & Ventilation Air Requirements

Vent and Supply (Outside) Air Safety Check Procedure

Gas Supply and Piping

High Altitude Derate

Propane Gas (LP) Conversion

Gas Piping Checks

Electrical Connections

Electrical Connection to J-box

Start-Up, Adjustment, and Safety Check

Sequence of Operation

Gas Manifold Pressure Measurement and Adjustment

Gas Input Rate Measurement (Natural Gas Only)

Circulator Blower Speed Adjustment

Operational Checks

Service and Maintenance Procedures

Ignitor (Qualiﬁ ed Service Technicians Only)

Wiring Diagram

BGH96M080C4B

BOSBGH96M060B3A

BOSBGH96M080B3A

BOSBGH96M080C4A

BOSBGH96M100C5A

BOSBGH96M100D5A

Bosch BOSBGH96M100D5A User's Information Manual

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