3
General information
Logamax plus GB162- 80/100 kW - Subject to modifications resulting from technical improvements!
9
3 General information
About these instructions
These Installation Instructions contain important
information for the safe and professional installation,
start-up and maintenance of the boiler with boiler input
rating of 80 kW and 100 kW.
These Installation Instructions are intended for
professional installers, who have the necessary training
and experience for working on heating and gas systems.
Cascade installation
Special cascade units (accessories) have been
developed to enable this boiler to be installed in a
cascade system. Every cascade unit includes an
installation frame, horizontal headers, connection pipes
for the boiler, main gas pipe and a vertical low loss
header.
Cascade units are available for installing the boilers inline
or back-to-back. These cascade units make installing a
cascade system easier and less labor intensive. Please
contact Buderus for further information about cascade
systems.
Updating of documentation
The following technical documentation is available for the
Logamax plus GB162-80 kW/100 kW:
• Installation instructions
• User’s manual
• Service manual.
Subject to technical modifications
Slight changes may be made without prior notice to the
illustrations, process steps and technical data as a result
of our policy of continuous improvement
3.1 Designated use
The boiler was designed to heat water in a central heating
system and generating domestic hot water. It is suitable
for connection to fully pumped, sealed water systems
only, with a maximum supply temperature set point off
180 °F (82 °C.
The boiler can be installed either as a single system or as
part of a multiple system (cascade system).
This boiler may not be installed in places, 4,000 ft. above
sea level.
3.2 Heating system water quality
The quality of the system water is very important. Poor
water quality can damage heating systems due to scale
formation and corrosion. For further details, please see
the accompanying “Water quality requirements for
Logamax plus GB162-80kW/100 kW” manual.
3.3 Pump test
If the boiler has not been operational for approx. 2 days,
the pump will automatically run for 10 seconds every
24 hours. This pump test is first carried out 24 hours after
the main power has been connected to the boiler.
3.4 Freeze protection
The boiler has integrated freeze protection that switches
the boiler ON at a space heating (CH) water temperature
of 45 °F (7 °C) and switches it OFF at a CH flow
temperature of 59 °F (15 °C).
This feature does not protect the central heating system
from freezing. If there is a risk of radiators or pipe sections
freezing up, we recommend setting the pump run-over
time to 24 hours. Æ paragraph 13.4 "BC10 Display
settings", page 58 on.
3.5 Tools, materials and further
equipment
For the installation and maintenance of the boiler you will
need the standard tools for space heating, gas and water
fitting. In addition, a hand truck with a fastening belt is
useful.
3.6 Disposal
• Dispose of the boiler packaging in an environmentally
sound manner.
• Dispose of components of the heating system (e. g.
boiler or control device), that must be replaced in an
environmentally responsible manner.
GB162 Natural Gas Propane Gas
80 kW 290,000 btu/hr 270,000 btu/hr
100 kW 333,000 btu/hr 315,000 btu/hr
Tab. 2 max. input rate
CAUTION:
Risk of system damage due to unsuitable
heating system water.
B If oxygen-permeable pipes are used, e.g.
for under floor heating systems, the
systems must be separated from one
another by plate heat exchangers.
Unsuitable heating system water
promotes sludge and corrosion formation.
This can result in heat exchanger
malfunction and damage.
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