2
Prepare boiler
14
Remove boiler from wood pallet
1. After removing the outer shipping carton from the boiler,
remove the parts box.
2. To remove the boiler from the pallet (after removing the
front door):
a. Remove the lag bolts from the wood pallet inside the
boiler (FIG. 2-1).
b. Disconnect the ribbon cable and remove the bezel
(no tools required for removal) before removing the
boiler from the pallet or moving the boiler.
c. Detach the boiler from the lag bolts in the front and
rear of the unit, see FIG. 2-1.
Do not drop the boiler or bump the jacket
on the fl oor or pallet. Damage to the boiler
can result.
For a boiler already installed, you must
turn off gas supply, turn off power and
allow boiler to cool before proceeding.
You must also completely test the boiler
after conversion to verify performance
as described under Start-up, Section 10
of this manual. Failure to comply could
result in severe personal injury, death, or
substantial property damage.
For the 400 and 500 Models you must
install a propane venturi to operate the
FTXL on propane gas.
Models 600 - 850 do not require a venturi
change for propane operation, but they
will require a valve adjustment.
REAR
LAG BOLTS
(QTY. 3)
LAG BOLTS
(QTY. 3)
FRONT
IMG00984
Figure 2-1 Boiler Mounted on Shipping Pallet
Gas conversions
NOTICE
WARNING
Models 400 and 500 Only (Venturi w/LP
Orifi ces)
1. Remove the top bezel from the unit (no tools required for
removal).
2. Disconnect the air inlet piping from the venturi by loosening
the band clamp around the rubber boot coupling. Slide the
rubber boot off of the venturi.
3. Disconnect gas piping from the venturi by loosening the
threaded nut on the venturi (replace gasket if damaged).
4. Remove the bolts connecting the venturi to the fan and then
proceed to remove the Natural venturi from the unit (FIG.’s
2-2A and 2-2B).
5. Install the LP venturi onto the fan taking note of the
following:
a. The UP arrow on the plastic housing is indeed
pointing up.
b. The threaded connection for the gas piping is facing
towards the front of the unit. Reinstall the
bolts connecting the venturi to the fan.
6. Reassemble the gas pipe to the threaded connection on
the venturi. Install the new gasket provided in the kit and
ensure it is seated properly before tightening the nut.
7. Reconnect the rubber boot on the air inlet to the venturi
inlet and tighten the band clamp at this connection.
8. After installation is complete, attach the propane conversion
label (in the conversion kit bag) next to the boiler rating
plate. Attach the LP caution label (in the conversion kit bag)
to the rear of the boiler underneath the gas supply piping.
9. Replace the top bezel removed in Step 1 and resume
operation.
DANGER
Models 400 and 500: Inspect the O-ring
when the blower is disassembled. The O-ring
must be in good condition and must be
installed. Failure to comply will cause a gas
leak, resulting in severe personal injury or
death.
WARNING
After converting to LP, check combustion
per the Start-up procedure in Section 10
of this manual. Failure to check and verify
combustion could result in severe personal
injury, death, or substantial property damage.
Installation & Operation Manual
Table 2A LP Conversion Kit
Model Description
Kit
Number
400 - 500
LP Kit
LPK30017
