Buderus Logamax plus GB162-80 kW Service Instructions Manual page 99

section 140 Index
B
Bleeding the gas supply pipe . . . . . . . . . . . . . . . . . .84
C
Checking an external switch contact . . . . . . . . . . . . .83
Checking and/or replacing the fan unit . . . . . . . . . . .63
Checking the cable harness – connections . . . . . . .87
Checking the control panel – supply voltage . . . . . .87
Checking the fan unit – operation 120 VAC . . . . . . .61
Checking the fan unit – power supply cord
(120 VAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Checking the fan unit – tacho cable . . . . . . . . . . . . .62
Checking the flue gas sensor . . . . . . . . . . . . . . . . . .72
Checking the flue gas sensor – cable . . . . . . . . . . . .73
Checking the gas valve – activation . . . . . . . . . . . . .79
Checking the gas valve – electrical resistance
of power supply cord . . . . . . . . . . . . . . . . . . . . . . .80
Checking the gas valve – internal electrical
resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Checking the gas valve – power supply plug . . . . . .79
Checking the glow ignitor – activation . . . . . . . . . . . .74
Checking the glow ignitor – power supply cord . . . . .75
Checking the glow ignitor – resistance . . . . . . . . . . .75
Checking the ionization circuit – ground lead . . . . . .79
Checking the ionization electrode . . . . . . . . . . . . . . .78
Checking the ionization electrode – cable . . . . . . . .78
Checking the ionization electrode – short circuit . . . .77
Checking the ON/OFF controller . . . . . . . . . . . . . . . .82
Checking the pump – activation . . . . . . . . . . . . . . . .65
Checking the pump – mechanical obstruction . . . . .64
Checking the pump – pollution . . . . . . . . . . . . . . . . .67
Checking the pump – power supply cord . . . . . . . . .65
Checking the pump – tacho cable . . . . . . . . . . . . . . .66
Checking the RC regulator . . . . . . . . . . . . . . . . . . . .82
Checking the supply, safety, return and
DHW temperature sensors . . . . . . . . . . . . . . . . . .68
Checking the supply, safety, return and
DHW temperature sensors – cables . . . . . . . . . . .69
Checking the transformer – internal electrical
resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Checking the transformer – power supply
cord and low-voltage cord . . . . . . . . . . . . . . . . . . .86
Checking/replacing fuses . . . . . . . . . . . . . . . . . . . . .61
Checking/replacing the pressure sensor –
pollution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
D
Draining the system . . . . . . . . . . . . . . . . . . . . . . . . .57
E
Electrical wiring diagram . . . . . . . . . . . . . . . . . . . . . .92
Logamax plus GB162-80 kW/100 kW - Subject to modifications resulting from technical improvements!
F
Filling the system and bleeding it of air . . . . . . . . . . 58
Flow temperature, maximum . . . . . . . . . . . . . . . . . . 94
Flue gas connection . . . . . . . . . . . . . . . . . . . . . . . . . 94
Front protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
H
Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . 3
I
Initial startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
M
Measure the ionization current . . . . . . . . . . . . . . . . . 76
Measuring and adjusting the gas/air ratio . . . . . . . . 84
Measuring the gas supply pressures – static
and dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
P
Pump run-over time . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pump test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
R
Replace transformer . . . . . . . . . . . . . . . . . . . . . . . . 86
Replacing the automatic air purging system . . . . . . 88
Replacing the DHW temperature sensor . . . . . . . . . 72
Replacing the feed, safety and return sensors . . . . 71
Replacing the flue gas sensor . . . . . . . . . . . . . . . . . 74
Replacing the gas valve . . . . . . . . . . . . . . . . . . . . . . 81
Replacing the ignition unit . . . . . . . . . . . . . . . . . . . . 76
Replacing the pump . . . . . . . . . . . . . . . . . . . . . . . . . 67
Replacing the UBA 3 . . . . . . . . . . . . . . . . . . . . . . . . 91
Replacing/cleaning the burner . . . . . . . . . . . . . . . . . 88
Replacing/cleaning the heat exchanger . . . . . . . . . . 89
Replacing/cleaning the siphon . . . . . . . . . . . . . . . . . 89
T
Technical specifications . . . . . . . . . . . . . . . . . . . . . . 94
V
Venturi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
W
Working pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Index
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94
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