Buderus Logano GC 124 II User Manual page 5

Converting gas valve
B Remove the safety screw [1] for the manifold pressure adjustment on
the gas valve.
B Remove manifold pressure adjustment screw [2].
B Remove stainless steel spiral spring [3].
B Install the red spring from the Honeywell conversion kit in the gas
valve.
B Screw in the new gas adjustment screw from the Honeywell
conversion kit until it is flush with the top of the gas valve.
Then screw the manifold pressure adjustment screw six (6)
revolutions clockwise. This corresponds to a pressure preset of
approx. 10.0 W.C. This setting must be checked with a pressure
gauge on completion of the conversion (
B Install new black safety screw from the Honeywell conversion kit.
B Clean the gas valve housing [4] and attach the yellow label [5] from
the Honeywell LP conversion kit to a visible spot on the gas valve.
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2 3
4
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Fig. 5 Gas valve
[1] Safety screw
[2] Manifold pressure adjustment screw
[3] Stainless steel spiral spring
[4] Gas valve
[5] Yellow label
Logano GC 124 II – 6 720 804 435 (2012/09)
chapter 4, page 6).
6 720 804 435-05.1T
Removing pilot burner and replacing pilot gas orifice
B Unscrew ignition burner unit from burner.
B Remove pilot orifice.
B Position the new BBR 12 pilot gas orifice in pilot burner unit.
When installing the pilot gas orifice, make sure that the
pilot gas orifice is correctly threaded and tightened.
B Screw the pilot line to the pilot burner unit.
B Screw the pilot burner unit to the main burner.
B Check that the pilot burner unit is correctly seated compared to the
main burner.
B Record the required information on the
conversion label and attach on the outside of the boiler jacket as close
as possible to the nameplate.
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Fig. 6 Pilot burner
[1] Ignition cable
[2] Ignition electrode
[3] Pilot gas line
[4] Pilot gas line retaining screws
Carrying out leak test
B Open manual gas shut-off in the gas line.
B Check the gas supply line to the gas shut-off for leaks with soap
solution. If no leaks are found, continue with the step after the next
step. If any leaks were found, close gas shut-off.
B Seal leaks and repeat the previous step.
B Wait five (5) minutes until all gas residues have dissipated. Then
check for a gas odor, including at floor level, because many types of
gas are heavier than air.
B Always follow the start-up instructions on the next page.
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Conversion to propane
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4
3
6 720 804 435-06.1T
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