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Outdoor Knight XL Installation & Operation Manual
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 Model you must install a
propane orifi ce to operate the Outdoor
Knight XL on propane gas. Verify when
installing that the orifi ce size marking
matches boiler size (Model 400 - 8.0 LP
orifi ce stamping).
Models 501 - 801 do not require an orifi ce
installation for propane operation, but
they will require a valve adjustment.
Gas conversions
ƽ WARNING
Model 400
1. Remove the top and front access covers from the unit
(tools required for removal).
2. Remove the three screws securing the venturi to the
blower. Note: When separating the venturi from the
blower, take care not to damage the O-ring inside the
blower (FIG. 2-4).
3. Remove the four star-drive screws securing the gas valve
to the venturi (FIG. 2-4).
4. Locate the propane orifi ce disk from the conversion kit
bag.Verify that the stamping on the orifi ce disk matches
the boiler size (Model 400 - 8.0 LP orifi ce stamping).
5. Remove the existing orifi ce from the O-ring in the side of
the gas valve and replace it with the orifi ce from the kit.
Position and secure the orifi ce in the valve as shown in
FIG. 2-4.
6. Reposition the gas valve against the venturi and replace
the star-drive screws (FIG. 2-4) securing the valve to the
venturi.
7. Inspect the O-ring inside the blower. Handle the O-ring
with care, do not damage. Reposition the venturi against
the blower and replace the screws securing the venturi to
the blower (FIG. 2-4).
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 left side of the unit in the lower
left corner.
9. Replace the top and front access covers.
ƽ DANGER
Model 400: 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.
ƽ 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.
BLOWER
O-RING
VENTURI
SCREWS
QTY. 3
GAS VALVE
BRASS ORIFICE
O-RING
SCREWS
QTY. 4
Figure 2-4 Installing Propane Orifi ce - Model 400
2 Prepare boiler