21
P/N 42-9551
KN Series Gas-fired direct vent cast iron boilers – Field assembly instructions
Step 54
Mount the gas train
1. Attach the gas train to the front of the
boiler using the bolts supplied.
Step 55
Re-attach gas line nipple
brackets
1. Re-attach the gas line nipple mount-
ing brackets, but leave loose. The gas
line will have to be manipulated in a
following step.
2. Loosen the U-clamp on the gas train
to allow the gas train to be rotated as
the gas line nipple is pulled forward
in a later step.
Step 56
Apply blower flange
gasket
1. Remove the protective backing from
the blower flange gasket to expose
the adhesive.
2. Place carefully on the blower flange
and press in place.
Step 57
Install gas line grommet
in air box
1. Install the gas line grommet provided
into the gas line opening on the bot-
tom of the air box.
