10
P/N 42-9551
KN Series Gas-fired direct vent cast iron boilers – Field assembly instructions
Step 20
Bolt boiler to base
Before bolting the boiler to
the base, knock the two 4x6
boards out from under the
block. If necessary, loosen the
two bolts that secure the back
section to the base.
1. Install a bolt, wedge, washer and nut
on side of the front section as done in
Step 4, page 5.
2. Tighten only until the split lock
washer has just flattened.
3. Make sure the back section bolts are
tightened as well.
Step 21
Inspection port plugs
1. Apply pipe dope (supplied with
boiler) to plugs (supplied) and install
in each of the inspection ports at the
lower right side of each section.
Step 22
Prepare condensate pan
Rubber gloves are recom-
mended for this procedure.
The condensate drain pan
is shown here with the
inspection plate and gasket
installed. This can be done
before or after the conden-
sate drain pan is bolted to the
boiler.
1. Use the silicone RTV supplied with
the boiler to apply a bead on the
condensate pan flange around the
complete perimeter.
2. At each of the four corners, apply a
bead on the flange where the sheet
metal edges meet.
Step 23
Install condensate drain
pan
1. This procedure requires two people
to do correctly.
2. Guide the condensate drain pan
through the front of the base as
shown.
3. When in position, lift the pan straight
up and hold firmly against the bot-
tom of the section assembly.
4. Install each bolt with two flat washers,
one split lock washer and nut (pro-
vided). Insert the bolts from the top.
5. Tighten just until the split lock washer
has flattened.
