Bosch Buderus SB625WS User Manual

Read these instructions carefully before installation and operation of the heating system.
Operating Instructions
Stainless Steel Condensing Boiler
Buderus SB625WS/Buderus SB745WS
6 720 805 220-00.1T
DANGER!
The installation instructions included in this Manual are intended solely for
use by a trained and certified installer, service company or the gas supply
company. If the information in this manual is not followed, a fire or explosion
may result causing property damage, personal injury, or death.
Have installation and service performed by a trained and certified
installer or service company, or the gas supply company.
Bosch recommends signing a service and maintenance contract with a
trained and certified installer or service company that covers annual
servicing and condition-based maintenance. Proper maintenance is a
fundamental requirement for safe and efficient operation and long
service life.

The boiler must be serviced annually including the main burner, ignition
burner, the entire venting system, and the combustion air supply. All
parts that show any signs of damage or corrosion must be replaced.
Improper installation, adjustment, alteration, service, or maintenance
can cause property damage, personal injury, or death. Refer to this
manual and consult a trained and certified installer or service company,
or the gas supply company before installation, service or maintenance.

The owner and operator is responsible for the operational safety and
regulatory compliance of the heating system.
THIS MANUAL SHOULD BE HANDED TO THE OWNER AND OPERATOR OF
THE APPLIANCE.
INSTALLER MUST REVIEW ALL SAFETY INSTRUCTIONS WITH THE
OWNER AND OPERATOR.
UPON COMPLETION OF THE INSTALLATION THE INSTALLER MUST
INSTRUCT THE OWNER AND OPERATOR ON THE FUNCTIONALITY AND
THE PROPER OPERATION OF THE BOILER AND THE HEATING SYSTEM
Low temperature condensing boilers for gas/oil fired power burners
6 720 805 220 (2013/02) US/CA

Bosch Buderus SB625WS Specifications

General

Brand	Bosch Buderus
Model	SB625WS
Category	Boiler
Type	Condensing
Fuel	Natural Gas
Efficiency	98%
Max. flow temperature	82°C

Summary

Key to Symbols and Safety Instructions

Explanation of Symbols

Defines warning symbols and keywords used in the manual.

General Safety Instructions

Covers critical safety procedures for gas leaks, flue gas, and general operation.

Specific Safety Warnings

Highlights DANGER/CAUTION statements regarding explosion, fire, electric shock, and flooding.

Product Description

Correct Use

Defines the intended purpose and limitations of the boiler.

Certification and Testing Marks

Mentions appliance testing and certification for US and Canadian markets.

Data Plate Information

Explains the importance of data and serial number plates for inquiries.

Correct Fill and Make-Up Water

Details water designation, quality requirements, and monitoring for heating systems.

Correct Fuel Specification

Specifies the need for correct fuel type and grade for proper operation.

Combustion Air Quality

Advises on maintaining combustion air free of corrosive substances and dust.

System Start-Up

Making the System Operational

Lists checks required before starting the system for operation.

Checking and Correcting Operating Pressure

Explains the importance of correct water pressure and how to check/correct it.

Starting Control Panel and Burner

Details the procedure for starting the boiler's control panel and burner.

Shutting Down the System

Switching Off Control Panel and Burner

Describes the process to shut down the boiler via the control panel.

Emergency System Shutdown

Provides instructions for shutting down the system in an emergency.

System Maintenance

Importance of Regular Maintenance

Explains the reasons for regular system servicing for efficiency and reliability.

Analysis and Checking Procedures

Details symbols, terms, frequency, and sampling points for system analysis.

Troubleshooting

System Fault Displays

Explains how fault displays on the control panel indicate system issues.

Freeze Protection and Resets

Advises on draining water to prevent freezing and cautions against excessive burner resets.