Buderus GB162-80 kW User Manual

For the contractor
Please read these instruc-
tions carefully
Propane Conversion kit
instructions
Condensing gas boiler
Logamax plus
Required Input Rates
Logamax plus GB162-80 kW Logamx plus GB162-100 kW
270,000 btu/hr 315,000 btu/hr
This kit and instructions are for converting the GB162 model
boilers from Natural Gas to Liquid Propane.
WARNING!
This conversion kit shall be installed by a qualified service agency
in accordance with the manufacturer‘s instructions and all
applicable codes and requirements of the authority having
jurisdiction.
The information in these instructions must be followed to
minimize the risk of fire or explosion or to prevent property
damage, personal injury or death. The qualified service agency
is responsible for the proper installation of this kit.
The installation is not proper and complete until the operation of
the converted boiler is checked as specified in the manufacturer‘s
instructions supplied with the kit.
CAUTION!
The gas supply shall be shut off prior to disconnecting the
electrical power, before proceeding with the conversion.
Notice! Save these instructions for later use.
6720615152-001.1TD
GB162-80 kW
GB162-100 kW
6 720 615 033 (04/2010) US/CA

Buderus GB162-80 kW Specifications

General

Type	Condensing Boiler
Output	80 kW
Efficiency	Up to 98%
Modulation Ratio	1:5
Operating pressure	3 bar
Fuel Type	Natural gas
Heat Exchanger Material	Aluminum-Silicon
Control System	EMS Plus

Summary

Safety considerations

Application purpose

Details the intended use of the conversion kit for Logamax plus GB162 models from Natural Gas to Liquid Propane.

Hazard definitions

Explains the meaning of DANGER, WARNING, CAUTION, and information symbols used in the manual to highlight risks.

Observe safety symbols

Highlights specific symbols indicating dangers like gas explosion and electric shock, with required safety actions.

Parts list for converting the boiler to propane

Liquid Propane conversion

Shut down the boiler

Step-by-step instructions for safely shutting down the boiler and disconnecting power before conversion.

Changing the gas valve assembly

Guide to removing the existing gas valve and installing the new one from the conversion kit, including venturi and O-ring.

Testing for gas leaks

Procedures for checking the gas supply system for leaks after conversion using appropriate detection methods.

Inlet gas pressure

Instructions on how to measure and verify the correct inlet gas pressure for LPG supply to the boiler.

Checking and adjusting the gas/air ratio

Steps to check and adjust the gas-air mixture for optimal combustion performance after the propane conversion.

Tightness test in operating conditions

How to perform a leak tightness test on the burner gas circuit while the boiler is operating.

Measuring the CO content

Procedure to measure carbon monoxide levels at the flue gas sampling point to ensure safe operation.

Lighting Instructions

Safety precautions and steps for lighting the boiler after conversion, including what to do if gas is detected.

Operating Instructions

Start up the boiler

Guide for safely starting up the converted boiler, including checking for gas and connecting power.