L&L Kiln Mfg, Inc. VENT-SURE DOWNDRAFT Instructions Manual Download Page 2

L&L VENT-SURE DOWNDRAFT KILN VENT INSTRUCTIONS

ventsure-instruct.pdf 

REV: 8/1/2017 

Page 2

©

 

2017  

 

L&L Kiln Mfg, Inc.  505 Sharptown Rd, Swedesboro NJ 08085  856.294.0077   F:856.294.0070   [email protected]   hotkilns.com   

Bypass/Collection Box

Slide 

Adjustment

Flex Duct

Wall 

Plate

12” Exhaust Pipe

Motor 

Inlet 

Duct

Vent System Blower Motor

IMPORTANT CAUTIONS

Check duct occasionally to see if there is wax or other 

residual build up. Wax could condense in the duct, 

which is a potential fire hazard. This is especially 

important if you are using a wax resist.
Be sure that the exhaust of the vent is not being brought 

back into your building. Keep exit of vent at least four feet 

away from any open windows or doors.
We recommend the use of a carbon monoxide monitor in 

your kiln room. These are available from good hardware 

stores for about $50 (This is another good way to be sure 

you are getting proper venting).
Disconnect power cord from power source when doing any 

maintenance on the fan motor. Do not put your fingers inside 

the blower without disconnecting power. Blower may start 

unexpectedly because of automatic thermal shut off switch 

built into the motor.
DO NOT place anything in the blower/motor while powered. 

Serious injury and/or damage to the motor could result. 

INSTALLATION TIP BEFORE STARTING

NOTE: Attach the Bypass Box to the stand and the 

aluminum duct to the Bypass Box before installing the 

kiln on the stand because it can be hard to do this when 

the kiln is on top of the stand.

CHECKING SHIPMENT

Your ventilation system was carefully packed and inspected 

prior to shipment to make sure that all parts were in perfect 

condition.
When carrier makes delivery, you should immediately unpack 

your ventilation system and accessories  to determine 

whether or not any damage has occurred in transit.
If damage has occurred, retain all of the packaging material 

and notify L&L at once.  Retain all papers to ensure that a 

proper claim can be filed.  

WHAT IS INCLUDED WITH VENT

One (1) wall-mounted blower mounted on a bracket with vent 

pipe to go through outside wall and a Motor Inlet Duct. An 8 

foot power cord with an attached On/Off switch plugs into a 

120 volt standard receptacle. (Note: 220-240 volt models will 

have a different cord).
One (1) Bypass Collection Box to be mounted to the  kiln 

stand, with mounting hardware. 
One (1) length of flexible aluminum ducting (expands to 15 

feet) with two (2) hose clamps.
One (1) 4” diameter 90 degree elbow (for outside the 
building).

Summary of Contents for VENT-SURE DOWNDRAFT

Page 1: ...o understand in order to operate your L L kiln ventilation system safely and effectively USEFUL WEB LINKS See this video on how to install a vent hotkilns com install vent sure See this video on how t...

Page 2: ...built into the motor DO NOT place anything in the blower motor while powered Serious injury and or damage to the motor could result INSTALLATION TIP BEFORE STARTING NOTE Attach the Bypass Box to the...

Page 3: ...E CERTAIN KILN POWER IS OFF BEFORE PROCEEDING WITH INSTALLATION Step 1 Turn Off Kiln Power This is critical for safety reasons Step 2 Drill Holes if needed Before mounting the Bypass Box you should dr...

Page 4: ...or wall with the outlet of the vent pointing up This is useful when you want to use an existing penetration in a wall that won t support the vent like a window or when you want to have the vent go out...

Page 5: ...w of exhaust a larger flow control opening reduces the flow of exhaust fumes from the kiln and a smaller flow control opening increases the exhaust ADJUSTING THE BYPASS SYSTEM The sliding adjuster all...

Page 6: ...uct Replace if necessary Check for corrosion especially if you are using clay with a high content of sulfur phosphorus or fluorine Check for wax or carbon build up if you are using a wax resist proces...

Page 7: ...l 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 QUESTION...

Page 8: ...ubic foot kiln firing an 85 pound load on Fast Glaze program to cone 8 took 70 KW hours with a vent on and 62 KW hours without a vent At 8 cents per KW hour that would be a cost of 0 64 more for the f...

Page 9: ...to vent don t waste heat and energy by venting more than you need EXTERNAL VENTING External venting is safer and surer than venting to the inside of your kiln room with a filter REMOTE MOUNTING OF MO...

Page 10: ...All Position Housing Finish Gray Enamel Housing Material Rolled Steel The Vent Sure vent is c MET us listed in both the US and Canada for use with L L listed kilns UL 499 CSA C22 2 No 122 CSA C22 List...

Page 11: ...ation to be mounted to any L L kiln stand It can also be mounted to the side of other kilns typically on the bottom section Bypass Collection Box M V MULT 00 see web Mult Mounting Bracket Comes with s...

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