3
Converting the heating system to propane
Logano G234X – 6 720 805 917 (2012/12) 7
▶ Loosen retaining nuts [1] on the burner shield.
Fig. 5 Removing the burner
[1] Retaining nuts
[2] Spacer ring
▶ Pull the burner out straight.
▶ Make sure that the spacer rings [2] remain on the studs.
3.3.3 Converting the burner
▶ Install the new main gas orifices and copper gasket.
▶ Ensure that the correct orifices for operation of the boiler are installed
( Tab. 4).
▶ Unscrew pilot burner unit [1] from gas burner.
▶ Disconnect pilot gas line [3] from pilot burner unit.
▶ Remove pilot orifice [2].
▶ Place the new pilot orifice BBR 12 in the pilot burner unit.
▶ Screw the pilot line [3] to the pilot burner unit.
Fig. 6 Pilot burner unit
[1] Pilot burner unit
[2] Pilot orifice
[3] Pilot gas line
[4] Ignition and monitor lead
3.3.4 Installing the burner
▶ Install burner in boiler in reverse order of removal.
▶ Tighten the mounting nuts.
▶ Tighten the screws on the gas feed line [2] and the burner again.
▶ Make sure that the connection pipe gasket removed previously is
replaced.
▶ Attach wires for the flame roll-out switch [4].
▶ Remove wire or rope was used to hold the gas feed line.
▶ Connect pilot gas line [6] to gas valve again.
▶ Connect ignition cable [3] to the automatic igniter.
G234X Orifice Size Number
38 2.20 3
45 2.40 3
55 2.30 4
64 2.45 4
Tab. 4 Size and number of orifices for propane
The orifice sizes in Tab. 4 are for installations between
0 - 8500 feet (0 - 2590 m) above sea level.
Contact Buderus if your installation is above 8500 feet
(2590 m) above sea level. Do not attempt to restrict the
gas flow to the boiler without the approved Buderus
parts and relevant technical documentation for
conversion.
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