Prepare Boiler; Remove Boiler From Wood Pallet; Gas Conversions - Lochinvar Knight XL 100 Series Installation & Operation Manual

2

Prepare boiler

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 remove the four (4)
lag bolts located at the front and rear of the boiler (FIG.
2-1).
Do not drop the boiler or bump the jacket
NOTICE
on the floor or pallet. Damage to the boiler
can result.
Figure 2-1 Boiler Mounted on Shipping Pallet
LAG BOLTS
LEFT

Gas conversions

For a boiler already installed, you must
⚠ WARNING
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.
Inspect the O-ring when the blower is
⚠ DANGER
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.
Figure 2-2A Installing Propane Orifice - Models 400-500
ORIFICE
(500 MODELS ONLY)
O-RING
SCREWS
QTY. 3
DIR #2000582947 00
NOTE: An orifice will be added to the Model 500
LAG BOLTS
(QTY. 2)
RIGHT
DIR #2000585120 00
BLOWER
O-RING
VENTURI
Installation & Operation Manual
Models 400-1000 (Venturi w/ LP Orifices)
1. Remove the front access panel from the unit (no tools
required for removal).
2. For Models 400-500: 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.
For Models 650-1000: Disconnect the venturi from the air
box by removing the four (4) bolts securing it to the air box.
3. For Models 400-500: Disconnect the gas piping from
the venturi by loosening the threaded nut on the venturi.
Replace gasket if damaged.
For Models 650-1000: Disconnect the gas piping from the
venturi by removing the four (4) bolts securing the pipe to
the venturi.
4. Remove the bolts connecting the venturi to the fan. 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 connection for the gas piping is facing towards the
top of the unit. Reinstall the bolts connecting the
venturi to the fan.
6. For Model 500 ONLY: Install the orifice and gasket.
7. Reassemble the gas pipe to the venturi. Install the new
gasket provided in the kit and ensure it is seated properly
before tightening.
8. For Models 400-500: Reconnect the rubber boot on the air
inlet to the venturi inlet and tighten the band clamp at this
connection.
For Models 650-1000: Reinstall the four (4)bolts connecting
the venturi to the air box and tighten.
9. After installation is complete, attach the propane conversion
label (in the conversion kit) next to the boiler rating plate.
Attach the LP caution label (in the conversion kit) to the
rear of the boiler underneath the gas supply piping.
Figure 2-2B Installing Propane Orifice - Models 650-1000
SCREWS
QTY. 4
GASKET
NUTS
QTY. 4
SCREWS
QTY. 7
DIR #2000582948 00
BLOWER
O-RING
VENTURI
13