Check And Adjust The Gas/Air Ratio - Buderus Logamax plus GB162-80 kW Installation Instructions Manual

• Measure the gas supply pressure and enter it in the
start-up report. paragraph 15.1 "Start-up report",
page 67.
To obtain the best preformance of the appliance, the gas
supply pressure must be:
Natural gas
Gas supply
inch W.C.
pressure
(mbar)
Min. 7 (17.4)
Nom. 8 (19.9)
Max. 10,5 (26.1)
Tab. 17 Gas supply pressure
• Press the "Service" e button (fig. 62, [4]) repeatedly
until the temperature reading is shown in the display.
• Press the "Chimney sweep" d button (fig. 62, [3]) to
clear the reading. table 12, "Flue gas test",
page 35.
10
110
100 120
90 130
140
11
1
1 2
Fig. 62 BC10 basic controller
1 Main switch
2 "Reset" button
3 "Chimney sweep" button
4 "Service" button
5 Connection possibility for the diagnosis connector
6 LED "Burner operation"
7 LED "Central heat demand"
8 Space heating water temperature knob
9 Display
10 DHW temperature knob
11 LED "DHW demand"
WARNING:
A leaking testing nipple causes explosive
fumes.
B Check the testing nipples used for leaks.
B Only use approved detection products to
locate leaks.
Logamax plus GB162- 80/100 kW - Subject to modifications resulting from technical improvements!
LPG inch
W.C.(mbar)
8 (19.9)
11 (27.4)
13 (32.3)
9 8
130
110
150
90
170
190
7
3 4 5 6
6720645916-47.1N
NOTICE
B If the supply pressure is too low, check the
gas supply pipe or contact the relevant
gas utility company if the required supply
pressure is not available.
B If the supply pressure is too high, a gas
pressure regulator must be integrated
upstream of the gas fitting. Contact the
gas utility company.
• Close the gas valve.
• Remove the gauge-connection tube and tighten the
screw plug on the testing nipple again.
• Open the gas valve again by pushing on the gas valve
and turning it ¼ rotation in a counterclockwise
direction.
9.8

Check and adjust the gas/air ratio

WARNING:
Damage to the boiler by incorrect adjustment
of the gas/air ratio.
B Adjust gas/air ratio ONLY with part load!
B Adjust gas/air ratio ONLY based on the
gas/air pressure differential and never
based on measured flue gas values such
as CO/CO /NOX!
2
WARNING:
A leaking testing nipple causes explosive
fumes.
B Check the testing nipples used for gas
tightness.
B Only use approved detection products to
locate leaks.
CAUTION:
Due to short circuits.
B Cover any hazardous locations prior to
locating the leaks.
B Do not spray the leak detection product
on cable runs, plugs or electrical wiring.
Do not let it drip onto them either.
• Open at least 2 thermostatic radiator valves, if present.
Do not switch ON the boiler.
• Push on the control panel to open it.
• Switch OFF the heating system by pressing the main
switch of the BC10 basic controller (fig. 62, [1]).
• Close the gas valve (fig. 60).
• Turn the vent key through a ¼ rotation to undo the
boiler door lock (fig. 51, see detailed picture).
9
Start-up procedure
43