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Buderus Logamax plus GB142-24 Manual

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We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Buderus Hydronic Systems • http://www.buderus.net
1 Safety and general instructions . . . . . . . . . . 5
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Hazard definitions . . . . . . . . . . . . . . . . . . . . . . 5
1.3 The following instructions must be observed . . 5
1.4 Observe these instructions for heating
system water . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Tools, materials and additional equipment . . . 6
1.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Regulations and guidelines . . . . . . . . . . . . . 7
3 Product description . . . . . . . . . . . . . . . . . . . . 8
4 Dimensions and connections . . . . . . . . . . . . 9
5 Packaging and transportation . . . . . . . . . . 11
5.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Transporting the appliance . . . . . . . . . . . . . . 11
6 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.1 Requirements for the installation room . . . . . 12
6.2 Fitting the appliance. . . . . . . . . . . . . . . . . . . . 12
6.3 Making the gas connection . . . . . . . . . . . . . . 13
6.4 Fitting the heating circuit supply and
return pipes . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.5 Combustion Air and Ventilation Openings . . . 17
6.6 Installation of the flue gas adapter
(included in the scope of delivery) . . . . . . . . . 18
6.7 Installation of the Exhaust and
Air Intake system. . . . . . . . . . . . . . . . . . . . . . 18
7 Connecting the condensate water drain . . 23
8 Electrical connections. . . . . . . . . . . . . . . . . 24
8.1 External connection board connections. . . . . 24
9 Start-up procedure. . . . . . . . . . . . . . . . . . . . 27
9.1 Testing for gas leaks . . . . . . . . . . . . . . . . . . . 28
9.2 Filling the appliance . . . . . . . . . . . . . . . . . . . . 28
9.3 Filling the condensate trap. . . . . . . . . . . . . . . 29
9.4 Venting the gas supply valve . . . . . . . . . . . . . 29
9.5 Checking the combustion air/flue gas
connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.6 Checking the orrifices . . . . . . . . . . . . . . . . . . 30
9.7 Inlet gas pressure . . . . . . . . . . . . . . . . . . . . . 30
9.8 Checking and adjusting the gas/air ratio . . . . 31
9.9 Carrying out a tightness test in operating
conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.10 Measuring the carbon monoxide
content (CO) . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.11 Function testing . . . . . . . . . . . . . . . . . . . . . . . 33
9.12 Measuring the ionization current . . . . . . . . . . 33
9.13 Installing the casing . . . . . . . . . . . . . . . . . . . . 35
9.14 Informing the owner, handing over the
technical documents . . . . . . . . . . . . . . . . . . . 35
10 BC10 basic controller . . . . . . . . . . . . . . . . . 36
10.1 Operating the BC10 basic controller . . . . . . . 36
10.1.1 Switching the heating system on and off . . . . 36
10.1.2 Displaying the operating conditions of
the burner and resetting the burner or
resetting burner faults . . . . . . . . . . . . . . . . . . 36
10.1.3 Displaying the heating system status
and/or faults. . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.2 Carrying out additional tasks . . . . . . . . . . . . . 39
10.2.1 Carrying out a flue gas test . . . . . . . . . . . . . . 39
10.2.2 Selecting partial load operation
(e. g. during flue gas testing) . . . . . . . . . . . . . 39
10.2.3 Switching the heating system to
manual mode. . . . . . . . . . . . . . . . . . . . . . . . . 39
10.3 Configuring the appliance . . . . . . . . . . . . . . . 40
10.3.1 Adjusting the heating capacity. . . . . . . . . . . . 40
10.3.2 Setting the DHW temperature value . . . . . . . 41
10.3.3 Entering the heater water temperature . . . . . 41
10.3.4 Setting the pump post-purge period . . . . . . . 41
11 Shutting down the system . . . . . . . . . . . . . 43
11.1 Shut down the heating system using
the control unit. . . . . . . . . . . . . . . . . . . . . . . . 43
11.2 Shutting down the heating system
in the event of an emergency . . . . . . . . . . . . 43
12 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . 44
12.1 Preparing the appliance for inspection . . . . . 44
12.2 Visual inspection for general signs of
corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
12.3 Internal tightness testing . . . . . . . . . . . . . . . . 45
12.4 Measuring the ionization current . . . . . . . . . . 45
12.5 Measuring the inlet gas pressure . . . . . . . . . 45
12.6 Checking and adjusting the gas/air ratio . . . . 45
12.7 Carrying out a gas tightness test in
operating conditions . . . . . . . . . . . . . . . . . . . 45
12.8 Measuring the carbon monoxide
content (CO) . . . . . . . . . . . . . . . . . . . . . . . . . 45
12.9 Carrying out a pressure test of the
heating system . . . . . . . . . . . . . . . . . . . . . . . 45
12.10 Checking the functioning and the safety
of the air intake and flue gas conduit. . . . . . . 45
12.11 Checking venting systems. . . . . . . . . . . . . . . 45
13 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . 46
13.1 Cleaning the heat exchanger, burner
and condensate trap . . . . . . . . . . . . . . . . . . . 46
13.2 Checking and adjusting the gas/air-ratio . . . . 48
14 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
14.1 Checking the UBA3 fuse;
replace if necessary . . . . . . . . . . . . . . . . . . . 49
14.2 External connection board fuse . . . . . . . . . . . 49
14.3 Checking the fan unit; 120 VAC control . . . . 50
14.4 Checking the fan unit;
Supply cord (120 VAC) . . . . . . . . . . . . . . . . . 51
14.5 Checking the fan unit; Tacho cable . . . . . . . . 52
14.6 Replacing the fan unit . . . . . . . . . . . . . . . . . . 52
14.7 Checking the supply/return/safety/
hot-water temperature sensors . . . . . . . . . . . 53
14.8 Replacing the supply/return/safety sensors . 54
14.9 Checking the supply/return/
safety sensors cable . . . . . . . . . . . . . . . . . . . 55
14.10 Checking the hot surface ignitor; Control . . . 56
14.11 Checking the hot surface ignitor; resistance . 57
3 …


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