Conversion Instructions

2
Product information
Logano GC 144 II – 6720808897 (2013/08) 3
2 Product information
2.1 Correct use
This conversion kit and the accompanying instructions are for
conversion of GC 144 II special gas-fired boilers from natural gas to
propane.
Requirements
2.2 Scope of delivery
• Honeywell gas solenoid valve conversion kit
# 393 691, comprising:
– black safety screw
– pressure adjustment screw
–red spring
– yellow label for gas valve
• GC 144 II: BBR 12 pilot gas orifice
• Main gas orifices and seals
• "Conversion to propane" label (to be filled out and attached to the
unit)
•Technical documents
3 Conversion to propane
For your own safety read the instructions before conversion.
The following instructions must be followed for conversion of the
boiler to propane:
▶ If the boiler was in operation, close the gas shut-off. Otherwise open
boiler front door.
▶ Set room thermostat (optional) to the lowest value.
▶ Disconnect the heating system from the power supply.
▶ Open boiler front door.
Fig. 1 Opening boiler front door
Fig. 2 Gas valve
[1] ON/OFF knob (shown in ON position)
▶ Turn gas valve ON/OFF knob clockwise to OFF position. Do not use
force.
GC 144 II–18
74 MBtu/hr
GC 144 II-25
103 MBtu/hr
GC 144 II-32
132.5 MBtu/hr
Table 2 Requirements
WARNING: Risk to life through not observing the
conversion instructions.
▶ If you wish to convert the boiler for operation with
propane, the conversion from natural gas to propane
must be carried out first as specified by the attached
conversion instructions.
WARNING: Risk to life through fire or explosion.
▶ Never use excessive force on the ON/OFF knob
( figure 2).
▶ Turn ON/OFF knob only by hand.
▶ Never use tools to turn knob.
▶ If you are unable to turn the knob by hand, do not try
to repair it.
▶ Call Buderus technical service for assistance.
6 720 804 435-01.1T
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6 720 804 435-02.1T