L&L VENT-SURE DOWNDRAFT KILN VENT INSTRUCTIONS
ventsure-instruct.pdf
REV: 8/1/2017
Page 7
©
2017
L&L Kiln Mfg, Inc. 505 Sharptown Rd, Swedesboro NJ 08085 856.294.0077 F:856.294.0070 [email protected] hotkilns.com
OPTIONAL VENT CONTROL
For more information see:
hotkilns.com/vent-control
The Vent Control allows you to automatically control the
operation of the Vent-Sure kiln vent with one of the outputs
from the DynaTrol (or Genesis).
Construction
The Vent Control consists of a relay that is controlled from
output #4 on the DynaTrol (or Genesis).
There is a female 120 volt receptacle to plug the vent into
and a cord to plug into a 120 volt wall outlet.
There is a 6 foot wire that connects the control box to the
kiln control panel. A grommet is included for non-factory
installation.
Where It Can Be Used
It is only available for kilns with DynaTrols and Genesis
controls.
It may not be used with kilns with powered bottoms
(because the same output on the control is used)
Operation
NOTE: These options are set in the “Hidden Menu” of the
DynaTrol.
OPTION A (OP A)
Used to control a vent. Output 4 can be programmed to
be on or off during each segment of a Vary-Fire program.
During an Easy-Fire program, output 4 comes on at the
beginning of the firing and turns off after the kiln has cooled
to 150F.
OPTION B (OP B)
Used to control a vent. Output 4 can be programmed to
be on or off during each segment of a Vary-Fire program.
Output 4 comes on at the beginning of an Easy-Fire
program, off at 1450°F, back on after the firing is complete
and the kiln has cooled to 1000°F and finally off again when
the temperature is below 150°F.
OPTION C (OP C)
Used to control a vent, an alarm, or other atmospheric
control. Output 4 can be programmed to be on or off during
each segment of a Vary-Fire program. Output 4 is off during
Easy-Fire programs.
FREQUENTLY ASKED QUESTIONS
How do I know if the system is working?
See our comments under “Adjusting the Bypass Valve”
How hot does the duct get during the firing?
Not very, for two reasons. One is that the Vent-Sure does not
draw out much heat from the kiln. The hotter the kiln gets, the
less hot air that is extracted by the vent motor. The other is that
the bypass box combines fresh cool air with the hot air from the
kiln before passing through the ductwork.
How long can the duct be and how many
bends can it have?
Up to 60 feet of ducting containing four 90 degree bends
may be safely used with no drop in static air flow at the duct
exhaust point or a reduction in draw at the kiln. The ducting
can be run either horizontally or vertically. (The Vent-Sure
should handle more static pressure than the Orton vent
because of the stronger motor. This translates into longer
lengths of pipe and more 90 degree bends. If you have a
choice run two 45 deg bends rather than one 90 degree
bend or use flexible duct which has a gentler bend).
Can I vent through a ceiling and/or roof?
Yes. You will need the multi-mounting bracket (M-V-
MULT/00), so that you can position the motor output
vertically. Additionally, you need to make sure that you install
a water trap. At the bottom of the longest vertical run, install a
u-shaped bend to catch any condensation that forms before
it enters the motor. Of course if you are going through a roof,
you will also need a rain cap and screen.
You do not normally need double wall ducting when going
through the roof since the pipe or duct does not reach high
temperature. It is always advisable to check your local
building codes for their requirements.
