AERCO KC Standard to Low NOx Convertion Instructions User Manual
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Figure 3. Burner & Air/Fuel Valve Removal
14.
Remove the 8-inch Combustion Chamber Liner from the Heat Exchanger (Figure 4). Since
this liner will be replaced, It may be cut or broken to simplify removal.
NOTE
If difficulty is encountered during removal of the 5/16-18 studs, it may be
necessary to “Double-Nut” the studs to simplify the removal process.
15.
Using vise-grip pliers, remove the six 5/16–18 x 1-1/2” long studs used to secure the removed
Burner Assembly to the Exhaust Manifold. These studs will be replaced with 1-3/4” studs
provided in the Conversion Kit.
16.
Disconnect the Air/Fuel Valve wiring harness from the Control Box.
17.
Disconnect the two wire leads from the Blower Proof Switch shown in Figure 5.
18.
Loosen the hose clamp on the Air/Fuel Valve inlet side of the blower-to-valve air hose shown
in Figure 3.
19.
Using an 11/16 inch wrench, loosen the two compression fittings securing the feedback tube to
the Air/Fuel Valve and Differential Pressure Regulator shown in Figure 3.
20.
Using two 9/16 inch wrenches, remove the two 3/8–16 bolts and hex nuts securing the Air Fuel
Valve to the Differential Pressure Regulator (Figure 3).