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L&L VENT-SURE DOWNDRAFT KILN VENT INSTRUCTIONS

ventsure-instruct.pdf 

REV: 8/1/2017 

Page 11

©

 

2017  

 

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

M-V-OUTT/00 ..................................................................(see web) 

Motor Outlet Duct. This is the piece of duct that attaches to the 

outlet of the motor. 
M-V-90EL/00 ...................................................................(see web) 

90 Deg 4” elbow. Used for attaching to motor mount duct to the 

outside to prevent water from getting into duct.
M-V-CORD/00 ................................................................ (see web) 

Power Cord for Vent-Sure. Includes a cord mounted on/off switch. 

(Call factory for non-USA cords)

Power Cord with On/Off switch:

M-V-DUCT/00 ................................................................. (see web) 

Flexible Vent Duct 2-1/2 to 15 Feet Expandable, Flexible 

Aluminum 3” duct with two hose clamps.

Flexible Aluminum Duct shown with hose clamps:

M-V-BBOX/00 ................................................................ (see web) 

Bypass Collection Box. Includes hardware for mounting and slide 

control. Note: This has the proper mounting hole configuration 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 six (6) sets of 1/4-20 bolts, 

nuts and lock washers for mounting this to the “Wall mount 

bracket” (M-V-VENT/BK).

This special “Multi-Mounting Bracket” will allow you to 

mount the vent on the floor or wall with the outlet of the vent 

pointing up. There are mounting holes on the bottom (for floor 

mounting) and on the side as well (for wall mounting):

M-V-VENT/DB ................................................................ (see web) 

Vent Doubler System for Vent-Sure. Includes a “T” duct with 

dampers, an extra Bypass Collection Box, Extra Flexible Duct.

(Consider buying the Multi-Mounting Bracket which is not included 

but sometimes useful for this installation as shown in the photo-

graph).

Vent Doubler System:

M-V-TDUC/00 ................................................................. (see web) 

“T” DUCT to attach two aluminum flexible ducts to. Includes  

dampers on the two inlets. The outlet fits onto the Motor Inlet 

Duct of the Vent-Sure and the Flexible Vent Duct(s) fit onto the 

inlets of this “T” Duct. 

Special “T” duct for doubler system:

Summary of Contents for M-V-VENT/00

Page 1: ...to 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 to drill holes for a vent hotkilns com drilling holes vent sure vent system TABLE OF CONTENTS 1 READ THE INSTRUCTIONS 1 USEFUL WEB LINKS 1 CHECKING SHIPMENT 2 WHAT IS INCLUDED WITH VENT 2 IMPORTANT CA...

Page 2: ...h 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 ...

Page 3: ...KE 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 drill the vent holes Note if you bought the vent system with a new kiln it should be pre drilled The easiest way to drill the vent holes is to place the stand upside down on the kiln bottom center it a...

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 of a roof or into a central vent system Step 6 Connect Flexible Duct Attach blower system to bypass collection box by stretching the flexible aluminum duct carefully it can extend up to 15 feet and ...

Page 5: ...ow 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 allows you to fine adjust the amount of venting that is done to your kiln It is easy to adjust but hard to know just how to adjust it The problem is that there are many factors that contribute to the am...

Page 6: ...duct 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 process or a high carbon content clay We recommend unmounting the fan and blowing out the squirrel cage with compressed air every two years or so especially if you are in a very dusty or if you have it mou...

Page 7: ...ol 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...

Page 8: ...cubic 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 firing The vent was on the whole time Will the cold air entering the kiln damage the product No The amount of air coming in is too small unless you drill holes in the lid which is not normally recomme...

Page 9: ...d 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 MOTOR The vent blower motor is mounted to a wall plate with a 12 length of exhaust pipe that mounts on the wall see photo This keeps the heat of the kiln away from the motor for longer motor life and k...

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 Listing No E112742 PARTS Prices of all parts are listed at hotkilns com parts Complete Vent Sure Kiln Vent System M V VENT 00 see web VENT SURE Vent 120 Volt Complete System as described above and on our...

Page 11: ...ration 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 six 6 sets of 1 4 20 bolts nuts and lock washers for mounting this to the Wall mount bracket M V VENT BK This special Multi Mounting Bracket will allow you to mount the vent on the floor or wall with ...

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