Buderus Logano plus GB312 Installation Instructions

Table of Contents
Logano plus GB312 – 6 720 647 367 (2012/11) 3
8 Shut down the heating system . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.1 Shutting down the heating system using
the programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.2 Heating system in an Shutting down the boiler
in an emergency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.2.1 Action in an emergency . . . . . . . . . . . . . . . . . . . . . . . . . 40
9 Heating system inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.1 Preparing the boiler for inspection . . . . . . . . . . . . . . . . 40
9.2 General operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.3 Checking the flue system including the combustion
air supply, inlet and outlet air openings . . . . . . . . . . . . 41
9.4 Checking the heating system operating pressure . . . . 41
9.5 Measuring the carbon dioxide content . . . . . . . . . . . . . 41
9.6 Determining how dirty the burner and heat
exchanger are and cleaning them . . . . . . . . . . . . . . . . . 41
9.6.1 Determining the extent of contamination . . . . . . . . . . . 42
9.6.2 Cleaning the burner and heat exchanger . . . . . . . . . . . 43
9.7 Checking gas valve for leaks . . . . . . . . . . . . . . . . . . . . . 47
9.8 Checking for leaks during normal operation . . . . . . . . . 49
9.9 Testing ionization current . . . . . . . . . . . . . . . . . . . . . . . 49
9.10 Concluding servicing/maintenace . . . . . . . . . . . . . . . . . 49
9.10.1 Removing instruments . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.10.2 Installing outer casing panels . . . . . . . . . . . . . . . . . . . . 49
9.10.3 Confirming servicing/maintenance . . . . . . . . . . . . . . . . 49
9.11 Inspection and maintenance logs . . . . . . . . . . . . . . . . . 50
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
10.1 Identifying operating modes and resetting faults . . . . . 52
10.2 Operating and error messages . . . . . . . . . . . . . . . . . . . 53
10.2.1 Operating messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2.2 Fault messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10.3 Troubleshooting safety sequence/pressure switch . . . 62
11 Sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
12 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
13 Boiler internal wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . 89
14 Examples of installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
14.1 Boiler, low-loss header, AM10 . . . . . . . . . . . . . . . . . . . 90
14.2 Boiler, low-loss header, Logamatic 4000 . . . . . . . . . . 91
14.3 2 Boilers, low-loss header, Logamatic 4000
with FM456 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
List of keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Buderus Logano plus GB312 Specifications

General

Brand	Buderus
Model	Logano plus GB312
Category	Boiler
Language	English