WSE EVAPORATOR MANUAL
WSE Operations Manual
Year: 2018
PAGE: 31
3.
Install the stack sections starting from the base taper. Ensure you place the crimped end up when connecting
the stack sections.
4.
When you put the last indoor section in place, lower the stack section from the roof jack (if used) approximately
2 ½” down onto the top piece of stack, or lower a stack section through the penetration in the roof.
a.
If a roof jack is used, place a remaining section of stack onto the roof jack by inserting into the top of the
roof jack and aligning with the interior stack.
5.
Continue installing stack until all pieces have been installed. Ensure you have a good overlap for each stack
joint. Overlap will be 2 to 2 ½”. It is recommended you screw all sections together using self tapping stainless
steel screws.
6.
Stack above the roof should be guide wired in at least three directions (tripod configuration) to minimize the
effects of wind.
a.
It is recommended you install a stack cover on the last / top section of stack. A closed stack cover will
minimize the rain and moisture entering the stack and arch. When installing a stack cover refer to the
LEADER STACK COVER document.
2.
If a roof jack is used,
a.
Insert one piece of stack into the roof jack until it is a lightly
wedged. The Leader style roof jack is tapered from larger to
smaller. The end to be inserted into the roof jack is the
crimped end. NOTE: You will be moving the piece of stack
back down by approximately 2 ½” when you connect to the
next stack section so ensure it will be able to move.
b.
Measure from the top of the taper to the bead at the bottom
of the stack section in the roof jack.
c.
Determine the number of lengths of stack required by dividing
the measurement taken in inches by 34”.
i.
For example if the measurement was 68”, then 68” ÷ 34” = 2
so 2 lengths of stack are required.
ii.
For example if the measurement was 60”, then 60” ÷ 34” =
1.76 lengths of stack are required. This would mean one full
length and a length measuring 26” would be required. To
obtain the 26” length you can either
iii.
Special order a piece of stack the length required
iv.
Cut a standard length of stack to fit. If you cut a length of
stack to fit, measure the length from the crimp on the bead
end of the stack.