Buderus 500 - 24/C, Руководство по обслуживанию

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We reserve the right to make technical modifications Buderus Ltd. • http://www.buderus-domestic.co.uk
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006 51
box 120 Check the flue-gas STL
z Take the boiler out of operation, see box 43, 44 or 47.
box 121
z
Remove both plugs of the flue-gas STL.
box 122
z Set multimeter to “measure resistance”.
z
Check the electrical resistance of the flue-gas STL.
box 123
z
Check the temperature of the flue gas at the test point on
the flue pipe.
z Compare the flue-gas temperature reading with the
measured electrical resistance, see box 124.
box 124
box 125
z Insert both plugs at the flue-gas STL and fit the cover on
the test point of the flue pipe. Put the boiler into operation,
see box 51, 54 or 55.
Flue-gas STL
Temperature Status Resistance in
Ω
≤
105 °C closed 0
>105 °C open infinitely high
box 126 Check the flue-gas STL - cable
H
DANGER OF FATAL ACCIDENT
due to electric shock
z Take the boiler out of service and tip the DBA control panel
forwards, see box 43, 44, 47 or 63.
z Loosen the six screws and remove the rear section,
see box 70.
z
Remove both plugs of the flue-gas STL, see box 121.
box 127
z
Set multimeter to “measure resistance”.
z
Check the cables of the flue-gas STL for breaks.
z
The electrical resistance measured at each individual wire
must be approximately 0
Ω
.
z Check the cables of the flue-gas STL for internal short
circuits. The level of electrical resistance, measured
between two wires chosen at random, must be infinitely
high.
box 128
z
Insert both plugs at the flue-gas STL, fit the DBA control
panel, attach the casing and place the boiler into
operation, see box 51, 54 or 55.
box 129 Replace the flue-gas STL
z Take the boiler out of operation, see box 43, 44 or 47.
z Remove both plugs of the flue-gas STL, see box 121.
z Twist the flue-gas STL anticlockwise to remove.
z Fit the new flue-gas STL. Use a new seal when doing so.
z Insert both plugs at the flue-gas STL and place the boiler
into operation, see box 51, 54 or 55.
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