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Your Kiln
How your Dehumidication Kiln Works
Thank you for purchasing a Nyle DH Kiln and
taking the rst step towards making the lumber
industry cleaner and more efcient! Years of
development, innovation, and the highest quality
materials have gone into building your kiln. It’s
our dedication to efciency that sets Nyle kilns
apart from the rest, making your system the best
on the market.
During kiln drying, moisture from green lumber
is evaporated into the air, increasing the humidity
inside the chamber. The lumber can’t continue to
dry if the air becomes over-saturated. Therefore
the moisture must be periodically removed from
the chamber. In a conventional kiln, moisture
would be expelled through venting. Venting causes
a signicant loss of heat, resulting in a waste of
energy to bring the kiln back up to temperature.
Instead of venting, Nyle Dehumidication Kilns
utilize a refrigeration system that condenses the
excess moisture. This moisture is then drained
off, retaining the existing heat energy. After the
moisture is removed and heat is reintroduced to
the dry air, it is pumped back into the kiln chamber
to start the process over. Unlike conventional kilns,
the heater in your Nyle Kiln is only used during the
initial warm-up. Sometimes, temperature increases
are desired during the cycle, saving you time and
money. But that’s not all your new kiln has to offer!
Though Nyle kilns don’t rely on venting to remove
moisture, a Vent System is supplied to add extra
control of your kiln temperature. If the internal
kiln temperature exceeds what’s required, these
vents can be opened to remove excess heat and
bring the temperature back to where it needs to
be.
Finally, Nyle Systems offers a wide variety of
upgrades and accessories to enhance your kiln
drying experience. See the upgrades and accessories
section on page 45 for more information. By
purchasing a Nyle Kiln, you have the support of
Nyle’s service team, the very same professionals
that built and tested your unit. Enjoy your new
system!
Getting Started
Please read through carefully as some options
may not apply.
Floors
A Concrete oor with insulation installed underneath
is recommended for best results. However, if the
kiln will be on an existing concrete oor, the insulation
may be omitted. Concrete must not extend
beyond the kiln walls.
Wood oors may be used but must be built to
construction guidelines (see Pg 3)
Ceilings
If the kiln chamber is a freestanding outside
building, the attic space must be well ventilated
through the eaves. This is done to avoid any
moisture buildup in this space, which will condense
on the cold roof and drip onto the insulation.
An interior kiln can have the ceiling insulation
open to the atmosphere.
The ceilings must be built to construction guidelines.
(Pg 3)
Doors
At the front of the kiln chamber, install bay/loading
doors with at least two sides hinges and a center
door latch to close (recommended). Top hinged
or lift-off doors are also acceptable.
At least one access door should be installed in
the back of the chamber to allow dehumidier
servicing and/or lumber monitoring.
All installed doors must:
• Be built to construction guidelines. However,
they may be lightened by increasing the stud
spacing and using 3/8” plywood. The lighter
weight will reduce the load on the hinges.
• Have a vapor barrier.
• Have gaskets wherever the door meets the
kiln; this will give a good, airtight t.
• Have a scraper-type weather strip to reduce
air leakage if the door sill is not present.
