NTI TFTN, Conversion Instructions

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4
Part 1 Propane Conversion Procedure
1. Install LP-Mixer with
LP-Diaphragm
a.
Check that the code of the air / gas
mixer and the diameter of the gas
diaphragm are those indicated for the
model of boiler to be converted – see
Table 1 .
b.
Turn the 120VAC power supply OFF to
the boiler.
c.
Turn the gas supply OFF.
d. Remove the front cover from the unit.
LP – Gas diaphragm
Figure 1 – Remove the Silencer
Figure 2 – Remove the Gas Pipe
Figure 3 – Remove the NG-mixer
Figure 4 – Insert the LP-diaphragm
e.
Remove the silencer.
f. Unscrew the two nuts and remove the
gas pipe.
g. Remove the three bolts securing the
NG-mixer to the blower and remove
the NG-Mixer.
i.
Reassemble the gas pipe to the gas
valve and mixer.
ATTENTION!! Use the new rubber
gaskets provided with the kit.
j. Install the silencer.
NOTICE: 150 NG-mixers are
equipped with an NG Diaphragm
located on the mixer gas line inlet
(see Figure 4 for general diaphragm
location).
NOTICE: Save the NG-mixer (and NG
Diaphragm for 150) in-case
the boiler needs to be converted
back to Natural Gas at a later date.
h. Secure the LP-Mixer (with LP
Diaphragm) to the blower in the same
position as the removed NG-Mixer,
reusing the bolts from the previous
step.
NOTICE: Verify the O-ring seal
between the mixer and blower is
correctly positioned and in good
condition before assembling.