Installation & Operation Manual
12
2
Prepare boiler
Figure 2-2
Installing Propane Orifice
Remove boiler from wood pallet
1.
After removing the outer shipping carton from the boiler,
remove the parts box.
2.
Remove the front door to access the lag bolts in front of the
unit (FIG. 2-1).
3.
To remove the boiler from the pallet (after removing the
front door):
a.
Remove the two lag bolts from the wood pallet
inside the boiler (FIG. 2-1).
b.
Detach the boiler from the lag bolts in the rear of the
unit, see FIG. 2-1.
Do not drop the boiler or bump the jacket on
the floor 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.
You must install a propane orifice to operate
the Knight boiler on propane gas. Verify
when installing that the orifice size marking
matches boiler size (Table 2A).
5. 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.
6. Replace the top and front access covers.
Figure 2-1
Boiler Mounted on Shipping Pallet
Gas conversions
NOTICE
WARNING
Figure 2-3
Leveling Legs on the Boiler
Leveling the boiler
1.
Set the boiler in place and check level.
a)
Adjust legs if necessary to level boiler, see FIG. 2-3
below.
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.
LP Conversion Table
Model
LP Orifice Stamping
80
80
105
105
150
150
210
210 / W150
285
285
Table 2A
LP Conversion Table
1. Remove the top and front access covers from the unit (no
tools required for removal).
2. Remove the three screws securing the gas valve to the
venturi (FIG. 2-2).
3. Locate the propane orifice disk from the conversion kit bag.
Verify that the stamping on the orifice disk matches the
boiler size (see Table 2A).
Place the orifice into the black rubber grommet in the side
of the gas valve and secure in the valve (FIG. 2-2).
4. Reposition the gas valve against the venturi and replace the
screws (FIG. 2-2) securing the valve to the venturi.
