13
P/N 42-9551
KN Series Gas-fired direct vent cast iron boilers – Field assembly instructions
Step 30
Burner and manifold
REMOVE THE PILOT
ORIFICE ASSEMBLY
before proceeding. The pilot
orifice assembly (shown in
Step 37, page 15) is factory-
installed in the manifold.
It must be removed before
the manifold is installed to
prevent damage to the pilot
assembly or pilot tube.
1. This illustration shows the manifold
(left) and the burner (right).
2. Orient the burner as shown, with the
double set of bolt notches on the
same side as the blower flange of the
manifold.
3. This will position the pilot tube at the
top as shown in the lower photo.
Step 31
Apply silicone RTV to top
surface of section assembly
Rubber gloves are recom-
mended for this procedure.
1. Apply a generous bead of silicone
RTV completely around the flange
surface of the section assembly.
Step 32
Mark bolt locations
1. Some of the bolt notches in the
burner flange will be used to secure
the manifold.
2. The burner is attached to the section
assembly before the manifold. To
avoid using the wrong bolt notches,
place the burner against the manifold
as shown.
3. Use a marker pen to mark ONLY the
bolt notches NOT required for bolting
the manifold.
