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www.Laars.com
Document 4288D
The FT Series, Wall Combi, Gas Conversion Kit
pg 1 of 4
The FT Series, wall combi, condensing boiler is
congured for Natural Gas (NG) from the factory.
A Natural Gas to Propane Conversion Kit is included
with every FT. The gas conversion kit will show you
how to convert your FT boiler to propane gas. If your
FT does not have the bag containing the conversion
kit, a replacement kit can be obtained. Contact the
manufacturer and request a replacement conversion kit.
NOTICE
If your installation altitude is greater than 2000 ft, check
that the ‘High Altitude’ Installer Setting has been adjusted
to suit your installation altitude. Refer to Section 4.12 of the
Installation and Operation Instructions (Document 1318).
WARNING
This gas conversion kit shall be installed by a qualied
service agency in accordance with the manufacturer’s
instructions and all applicable codes and requirements of
the authority having jurisdiction. The information in these
instructions must be followed to minimize the risk of re or
explosion or to prevent property damage, personal injury
or death. The qualied service agency is responsible for
the proper installation of this kit. The installation is not
proper and complete until the operation of the converted
appliance is checked as specied in the manufacturer’s
instructions supplied with the kit.Installation must conform
to local codes and the latest edition of the National Fuel
Gas Code, ANSI Z223.1 and CAN-B149.1. Failure to
follow instructions could result in serious injury or property
damage. The qualied agency performing this work
assumes responsibility for gas conversion.
CAUTION
This combination boiler has already been set to burn natural
gas, but can be converted to burn LP gas. Before placing the
combination boiler into operation, verify that the type of gas
supplied to your combination boiler.
Steps 1 thru 25
1.
Turn
OFF
the FT. The
ON / OFF
button is located at
the bottom left of the Control Display.
2.
Turn
OFF
the GAS and WATER supply to the FT (valves
are located on the plumbing pipes.)
3.
Using a Phillips screwdriver, remove the 4 screws on the
front cover. See Figure A.
4.
Locate the Gas Inlet Pipe at the top left of the unit as
shown in Figure A, and loosen the Brass Fittings at both
ends of the Gas Inlet Pipe.
5.
Completely unthread the brass tting on the blower end of
the Gas Inlet Pipe and then carefully swing the Gas Inlet
Pipe to the left or right, just enough so that it is out of the
way. See Figure B.
6.
Remove the existing natural gas nozzle or orice. If your
unit is a 199, note that the at side of the orice is towards
the blower. Save the packing for re-use. See Figure C.
7.
Install the new LP (propane) nozzle or orice. Re-use the
packing from previous.
8.
Return the Gas Inlet Pipe to its original position and tighten
both of the brass ttings.
ON / OFF
H2373800D
Model
Natural Gas (NG) part # Propane Gas (LP) part #
FTCW140
FT1412N
FT1412P
FTCW199
FT1780 FT1802
Nozzle
Orice
Kit # R20770
Table A. Gas Conversion Parts
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