Installation & Operation Manual
2Prepare boiler
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.
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.
b.Detach the boiler from the lag bolts in the rear of the unit, see FIG.
NOTICE | Do not drop the boiler or bump the jacket | |
on the floor or pallet. Damage to the | ||
| ||
| boiler can result. |
Figure 2-1 Boiler Mounted on Shipping Pallet
Model 399
1.Remove the top and front access covers from the unit (no 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
3.Remove the four
4.Locate the propane orifice disk from the conversion kit bag. Verify that the stamping on the orifice disk matches the boiler size (Model 399 - 8.0 LP orifice stamping).
5.Remove the existing orifice from the
6.Reposition the gas valve against the venturi and replace the
7.Inspect the
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.
Gas conversions
WARNING | After converting to LP, check combustion per | |
| the | |
| manual. | Failure to check and verify |
| combustion could result in severe personal |
WARNING
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
For the 399 Model you must install a propane orifice to operate the Knight XL on propane gas. Verify when installing that the orifice size marking matches boiler size (Model 399 - 8.0 LP orifice stamping).
Models 500 - 800 do not require an orifice installation for propane operation, but they will require a valve adjustment.
injury, death, or substantial property |
damage. |
Model 399: Inspect the
in good condition and must be installed. Failure to comply will cause a gas leak, resulting in severe personal injury or death.
Figure 2-2 Installing Propane Orifice - Model 399
BLOWER
SCREWS
QTY. 3
SCREWS
QTY. 4
BRASS ORIFICE
GAS VALVE
13