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Bosch KWB35-3A User Manual

Bosch KWB35-3A
100 pages
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6 720 810 590 (2020/04) CA/US
Installation and Maintenance Instructions for Contractors
Residential Gas Condensing Boiler
Greenstar FS/Combi FS
6720810590-00.2Wo
KBR16-3A | KBR21-3A | KBR28-3A | KBR35-3A | KBR42-3A | KWB28-3A | KWB35-3A | KWB42-3A

Table of Contents

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Bosch KWB35-3A Specifications

General IconGeneral
BrandBosch
ModelKWB35-3A
CategoryBoiler
LanguageEnglish

Summary

Symbols and Safety Instructions

Explanation of Symbols

Defines signal words like DANGER, WARNING, CAUTION, and NOTICE used to indicate risks and practices.

General Safety Instructions

Provides crucial safety advice for gas leaks, smelling gas, and flue gas situations, emphasizing immediate actions.

Technical Data

Technical Data - Heating Boiler KBR 16-3

Provides detailed specifications including input/output, gas connection, flue gas, and general data for KBR 16-3.

Technical Data Heating Boiler KBR21-3

Detailed specifications for KBR21-3 heating boiler, covering input/output, gas, flue gas, and general parameters.

Technical Data Heating Boiler KBR 28-3

Comprehensive technical data for KBR 28-3 heating boiler, including performance and operational specifications.

Technical Data Heating Boiler KBR 35-3

Technical specifications for KBR 35-3 heating boiler, detailing output, gas, and general performance data.

Technical Data Heating Boiler KBR 42-3

Provides detailed technical specifications for KBR 42-3 heating boiler, including performance at different altitudes.

Technical Data Combi Boiler KWB 28-3

Detailed technical data for KWB 28-3 combi boiler, covering input/output, DHW, and general parameters.

Technical Data Combi Boiler 35-3

Comprehensive technical data for KWB 35-3 combi boiler, including DHW flow rate and operating specifications.

Technical Data Combi Boiler KWB 42-3

Detailed technical specifications for KWB 42-3 combi boiler, including DHW performance and altitude adjustments.

Regulations

Compliance with Standards and Regulations

Outlines compliance with national and local codes, NFPA, and CSA standards for boiler installation.

Installation

Important Notes

Provides critical notes on filling systems, water quality, and recommended commissioning steps.

Installation of the Exhaust and Air Intake

Covers safety requirements and codes for installing exhaust and air intake systems.

Direct Vent Installations (Sealed Combustion)

Specifies requirements for direct vent installations, including pipe pitch and termination clearances.

Commissioning

Before Operating the Appliance

Covers initial checks before operation, including filling, purging, and pressure verification.

After Commissioning

Lists final checks after commissioning, including flue path, gas pressure, and condensate discharge.

Setting Frost Protection

Details how to set frost protection for both the heating system and DHW tank.

Heatronic Boiler Control Settings

Overview of Service Functions

Lists available service functions, divided into first and second service levels.

First Level Service

Details service functions from 1.A to 7.E, covering appliance settings and diagnostics.

Second Level Service

Lists advanced service functions from 8.A to 9.F, covering software and specific component settings.

Description of the Service Functions

Provides detailed descriptions and settings for various service functions.

Gas Type Conversion

Setting the Gas/Air Ratio (CO2 or O2)

Details how to set the gas-air ratio using an electronic flue gas analyzer.

Dynamic Gas Pressure Test

Procedure for performing a dynamic gas pressure test and checking inlet gas pressure.

Flue Gas Test

Measuring CO Content of the Flue Gas

Guides on measuring CO levels in flue gas using a multiport probe.

Environmental Protection

Inspection and Maintenance

Emphasizes the importance of regular service for appliance longevity and efficiency.

Inspection and Maintenance

Checklist for Annual Inspection and Maintenance

Provides a checklist to guide through the annual service and maintenance procedure.

Faults

Troubleshooting

Provides safety warnings and initial steps for troubleshooting faults.

Faults That Are Shown on the Display

Lists display codes for faults and their corresponding eliminations.

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