8
P/N 42-9551
KN Series Gas-fired direct vent cast iron boilers – Field assembly instructions
Step 12
Seat the push nipples
1. Place a 2x4 board across the nipple
and strike firmly with a mallet.
2. Do this with several strokes, just so
the push nipple is firmly started.
3. Make sure the board is parallel to the
nipple port surface to prevent rolling
the push nipple.
Step 13
Lifting the sections
Use leather gloves when lift-
ing or moving boiler sections.
Sections are heavy and can
cause severe personal injury
or death if mishandled.
Lift section using two
people, following the
recommendations shown in
Step 13, page 8.
1. Lift section, with each person holding
at the bottom of the section.
2. Handlers should lift with their legs to
avoid back strain.
Step 14
Draw up sections
1. Carefully slide the first intermediate
section up to the front.
2. Before pulling the intermediate
section up fully, brush lubricant on
the inside machined surfaces of the
nipple ports as in Step 9, page 7.
3. Use a 2x4 board and mallet to start
the section in place as shown in
Step 17, page 9.
4. Wipe a small amount of motor oil on
the ¾-inch all-thread rods supplied
with the boiler to make pull-up easier.
5. Place a ¾” nut and washer plus a cast
iron plate (supplied with boiler) on
the ¾” rod on each side as shown.
6. Snug finger tight.
Step 15
Pull sections together
1. Use box wrenches (preferred) to pull
the sections together.
2. Alternate from one side to the other
during pull-up to avoid cocking the
nipple ports.
3. When the sections are properly
pulled up, they will be nearly metal-
to-metal.
