3324 Promenade Ave - re Air Mechanical Duct WorkBill
To:
Bill Lloyd BHL Services 651- 636 -4292
Your drawing meet the requirements for installation.
You have proper duct size for distance and acceptable material for the duct work.
If you have further concerns.
Please let me know
Regards
Perry Peterson
Tech support
Skutt Ceramic Products
503 - 774 -6000
33021 Pl'Ov`tevt xa(e 4 v� -e_
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Skutt Ceramic Products
6441 SE Johnson Creek Blvd, Portland, Oregon 97206
[503)774 -6000 Fax [503)774 -7833
APR -16 -2010 07:33 FROM:AIR MECHANICAL EAGAN 6514526925
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411111 Ifii. VI 1/'liT1Vlf1. 1I1V
HEATING, COOLING & RADIANT
16411 Aberdeen St NE • Ham Lake, MN 55304 (763) 434 -7747
2795 Highway 55 East i Eagan, MN 55121 (651) 452 -2025
www.airmechanicalinc.com
Date: 4 1 - :6 ~ 0 2 01
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"Creating Custom Comfort"
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The facts about
kiln ventilation
VENTING
Venting the kiln of fumes is essential to producing
quality ware. Venting fumes from the room is essential to
creating a quality work environment. See pages 2 & 3 for
more reasons to vent and types of venting.
DOWNDRAFT VENTING
Downdraft venting is an improvement on hoods, fans or
open windows. See page 2 for a comparison and details.
Pulls fumes directly from the kiln before they can
enter the room.
• No need to prop kiln top open.
SKUTT ENVIROVENT 2
The Skutt EnviroVent 2 takes downdraft venting to a
new level.
• Improves firing atmosphere inside kiln. See page 2.
• Located below kiln so it won't interfere with
operation of lid. More on page 3.
• Easy to install. Details on page 4.
L
EnviroVent
ENVIROVENT 2:
LOADED WITH NEW FEATURES
The new Skutt EnviroVent 2 improves on the original in
several ways:
E Vent 2 kilns or large ovals with 1 motor.
E Spring loaded plenum cup assures a tight, leak -free
seal throughout the firing process. See page 3 for details.
O Negative pressure means no leaking. See diagram on
page 2.
Ability to program on /off with Skutt controller. See
EnviroLink sidebar on page 3.
U.L. listed flexible aluminum ducting included.
• Only U.L. listed venting system with Skutt kilns.
• Optional floor mount kit and 4" adapter included free.
• Remote mounting equals no vibration and longer
motor life.
We help you make great things.
Env►ro ent:a
8" Discharge
Tube, Cul
as Necessary
Rain Hood
or Vent ----
3 1/8"
Cutout
in Wall
Blower
W/Motor
COMPA RISON OF FEATURES AND BENEFITS BETWEEN A FAN DRIVEN HOOD AND
A MECHANICAL DOWNDRAFT VENTILATION SYSTEM
WHY IS ROOM AIR
VENTING IMPORTANT
TO PEOPLE?
115 volt
Cordset
W /Switch
Kiln manufacturers have always
recommended that firing areas have
adequate ventilation. There are many
reasons why kiln venting is stressed
more now. Today's environmental
consciousness has created more
awareness of potential health hazards.
Studies have shown that carbon
monoxide emissions can exceed OSHA
Threshold Limit Values during bisque
,l-
Flex Duct )
Ne ;ati Pressure ', ~`. •_
Hose Aluminum Spring Loaded
Clam Cup Cup Stand
Fumes are extracted directly from kiln so the fumes never enter
the room.
Evens temperatures top to bottom; promotes complete oxidation for
more consistent results. Allows mixed color loads.
Automatic kilns can run entire firing cyc[e without lid; propping and
with all peep plugs in place.
Installs under kiln, completely out of the way; easy to move kiln with
flexible ducting.
1 Fan motor mounted away from the rising heat of the kiln to prevent
overheating.
firing of electric kilns. Formaldehyde
and sulfur dioxide also may be present
in lower concentrations. Because of these
concerns, kiln venting is required by
building codes in most areas.
WHY IS INTERNAL KILN
VENTING IMPORTANT TO
MY WARE?
Ceramic and glass fusing materials,
including greenware, glazes and lusters,
contain organic compounds. The first
phase of the firing process removes these
1
Fumes enter room environ-
ment before collection; some
odor and exposure to fumes.
No benefit to firing chamber
environment.
Most hoods require
automatic kilns to be vented,
with lid propped.
Complex' overhead attach -
ment to wall or ceiling; limits
kiln movement.
Fan motor above kiln; over-
heating can cause failure.
gases or vapors from the ware before the
higher temperature changes take place.
These contaminants need to be removed
from the kiln and replaced with fresh
air. This is especially important with
red, orange, yellow and brown glazes
or lusters because they need oxygen for
good results.
Some specific problems related to poor
venting include:
Grayish inner areas (black core) when
bisque firing earthenware.
CAN YOU DESCRIBE MY
KILN VENTING OPTIONS?
There are several options, ranked here in
order of sophistication:
X Natural ventilation from open doors
and windows.
III Room ventilation fans.
IN Convection canopy collection hoods.
NJ Mechanical fan collection hoods.
■ Mechanical downdraft vent systems.
WHAT ARE THE MAIN
DIFFERENCES BETWEEN
VENTING SYSTEMS?
FA Improved kiln firing chamber heat
distribution and circulation for more
consistent firing results; and
• Removal of fumes directly from the
firing chamber before they can post
a health hazard. Little or no odor can
be detected.
•l Unburned carbon in bisque ware that
causes crazing, pinholes or blisters
during glaze firing.
Dulled surfaces and cloudy colors.
X Weak colors in red - orange - yellow
glazes.
IS Color migration caused by glaze fumes
depositing on nearby ware.
ael Cones which bend improperly due to
inadequate oxygen.
If your firing chamber is not properly
vented, your work is likely to suffer.
Window ventilation and convection
hoods are passive —the warm fumes rise,
and hopefully, are diluted or escape. This
requires very large volumes of fresh air
which is costly in the winter.
Collection hoods with electric fans do
a better job of removing fumes, but
fumes still enter the room air before
they are collected. There is usually still a
significant odor. External hoods do not
help internal kiln performance.
Mechanical downdraft systems, such as
the Skutt EnviroVent 2, were developed to
address both needs:
As firing
progresses, the
brick heats up
more on the
inside than the
outside, causing
the kiln floor
to "cup" in the
center and leaks
to occur.
about kil
HOW MUCH DOES THE
ENVIROVENT 2 HELP HEAT
DISTRIBUTION?
Heat naturally rises therefore the bottom
of the kiln can fire cooler than the top,
especially at lower temperature ranges.
On tests conducted on a 10 cu. ft. kiln
with pyrometers at six levels, it was
found that the EnviroVent 2 can cut
temperature differences to about half of
normal. Some users have reported even
greater improvement in heat distribution.
HOW DOES IT WORK?
It is unique because it creates a downdraft
venting effect, immediately mixing fumes
with cooling air in a plenum chamber
at the bottom of the kiln. The venting
requires a few very small holes to be
drilled in the lid and floor of the kiln.
The fan motor mounts to the wall /floor/
ceiling and vents the fumes to the outside
much like a household dryer.
The spring-
loaded plenum
cup on the new
EnviroVent 2
rises and falls
with the kiln
floor, assuring
a tight, leak-
free seal.
fern m at4 r
Seal
Remains
Intact
f
The EnviroLink is an accessory item that
can he ordered for the EnviroVent and
EnviroVent 2 that works in conjunction
with the Skutt KilnMaster or GlassMaster
controller. It allows you to program the
controller to automatically turn the vent on
and off throughout a firing program. You
simply enter cn on /off setting for each
segment of a Ramp and Hold program
while you are programming the kiln. There
are preset "vent programs" that can be run
in conjunction with a ConeFire Mode or
GlassFire Mode program as well.
DOES THIS REQUIRE
MAJOR MODIFICATIONS
TO MY KILN?
No. You can use the twist drills we
provide to bore though the soft firebrick
by hand. The holes are quite small, shown
here at actual size. As an
example, the Skutt 1027 needs
only three 3/16" holes in the
floor and lid. We can pre -drill
the kiln in the factory at the
time it is ordered. Be sure to
tell your distributor when ordering your
new kiln that you want it drilled.
IS INSTALLATION
DIFFICULT?
No. You drill the few holes needed
for your kiln, place the EnviroVent 2
spring loaded plenum cup under your
kiln and mount the motor to the wall/
floor /ceiling. We supply 8 of the flexible
aluminum dryer ducting that is used
between the plenum cup and the motor.
Skutt even supplies the sleeve that is
needed to pass through the wall.
It runs on 115V household current. If
you install the EnviroVent 2 on a kiln
with a metal floor plate, you will need an
electric drill.
EnviroVent 2 Specifications
Structural material
Duct
Power requirements
Control
Air volume
Shipping weight
Ships via UPS
3/16"
•
U.L. listed vent system when used with Skutt U.L. listed kilns.
Package includes complete operation and installation instructions, twist drill set.
Two year limited warranty.
We help you make great things.
CAN 1 DO BURN -OUT
FIRINGS?
The EnviroVent 2 was designed for
conventional pottery techniques. A
large load of burn -out pieces may
momentarily overload the EnviroVent 2.
We recommend smaller loads of burn -out
pieces.
CAN 1 REARRANGE MY
KILN AREA EASILY?
Certainly. The vented air is cool enough
to allow you to use flexible ducting away
from the kiln. There are no overhead
brackets or pulleys to restrict your
locations.
DOES THE ENVIROVENT 2
CHANGE FIRING TIMES?
There may be a slight increase of 10
to 15 minutes to shut -off in an 8 hour
firing. However, your total kiln cool to
cool firing cycle will probably be shorter
because the EnviroVent 2 removes heat
from the kiln after shut -off without
causing thermal shock.
Aluminum
3" diameter, 8' length - U.L. Listed
- Flexible Aluminum
115 Volt, 1.4 Amp
In -line power switch
140 CFM
17 Ibs
6441 SE Johnson Creek Blvd., Portland, OR 97206 M 503- 774 -6000 M www.skutt.com M info @skutt.com
WHAT DOES THE U.L.
LISTING OF A KILN VENT
SYSTEM MEAN?
It means that the manufacturer has
submitted the vent unit, properly
installed on specific kiln models, to
Underwriters' Laboratories for rigorous
testing under actual high -heat firing
conditions. When installed on Skutt U.L.
kilns, the EnviroVent 2 is the only U.L.
listed downdraft vent system.
Some kiln vents use an electric motor
which may have been U.L. listed for
general room temperature use. This does
not make their vent systems U.L. listed.