I am contemplating today buying a Jenn Air with 2 cartridges. The one I have does not pull exhaust out and sets off fire alarms frequently. This is an older model and I figure the motor is old and I cannot get parts for this unit anymore.. I have been told that a 6 inch pipe may need to be installed. Is this true? Can I adapt the 5 inch that comes with the unit going into a 6 inch? Will it work if I use 5" with 2 bends for 2-1/2 feet, then straight 6 inch piped for 11-1/2 feet? I'm not sure that I have room to cut away for the extra pipe in my floor and I don't want to spend all of this money if this will not work.
Please don't buy another one!!! This is the most poorly designed cooktop made. You would be much happier with another brand. If you really want a treat try Thermador. I had a Jenn Air installed on an outside wall and vented directly outside, It still set off the smoke detector constantly. Very hard to clean., Very poor burners both open coil and smooth top.
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You first need to remove the unit from its installation. Start by disconnecting the exhaust fan from the ductwork. Then push the cooktop up.
To get at the switch you need to remove the top by taking off only the
top row of screws all around the unit and also at the top of the down draft cavity (the down draft cavity is where the grease guard mesh is)
its would be best to install a damper
whether auto matic
or manuely operated
this is a common problem for the down draft
ive seen some people install things similar
to dryer vent louvers,
but check you exhaust area and still if you can block direct draft
but dont block it so that it cannot exhaust properly
1) turn off power at the breaker.
2) remove hold down screws
3) pop up cooktop out of counter top
4) remove knobs and downdraft grille
5) remove ceramic top (screws around outside and also in side grille opening)
6) unplug burners replace with new burner
I had the same problem. Mine was caused by liquid seeping into the infinite switch (the switch that gets rotated by the knob to set burner temperature). This caused one of the live wires to short to ground within the switch. Bad Design IMHO. Replacing the switch fixed the problem (you can get replacement parts at Searspartsdirect.com - search using the cooktop model number). You first need to remove the unit from its installation. Start by disconnecting the exhaust fan from the ductwork. Then push the cooktop up. To get at the switch you need to remove the top by taking off only the top row of screws all around the unit and also in the down draft cavity (the down draft cavity is where the grease guard mesh is)
Turn off the circuit breaker to the cooktop. Verify by making sure the burners/fan do not come on. Disconnect the exhaust fan (underneath the cooktop) from the ductwork by removing the tape that joins it. While you are underneath the cooktop, open the junction box. Label the four wires that are joined so that you will be able to connect them later. Then disconnect the four wires. Remove the metal sheating that connects to the junction box (there is a nut on the inside of the junction box that you loosen. Pull out all the supply wires (from the mains) from the junction box. Then push the cooktop up and out and lay it flat on a table with the flat side down. Take off only the top row of screws all around the unit. Rotate the unit so that you can get to the down draft cavity (the down draft cavity is where the grease guard mesh is). Remove the two center screws. Then pull the black top off.
For an exploded view of the unit check out http://www.appliancepartspros.com/partsearch/model.aspx?model_id=47639&diagram_id=681565#d681565
I can't imagine directing the downdraft vent back up to a traditional hood type system. Why bother, just don't use the downdraft or get a cooktop without a down draft and save money.
In granite, yes for any cooktop as long as someone can cut the correct size hole. Cooktops must be installed so the top is just about flush with the countertop. They all come with a template for cutting the right size hole in the countertop.
these are cartridge elements corrrect? try reversing the cartidges, now the front small will become the rear small . does it not work in this position? and the newly placed front burner work?? this will determine if the proble lies within the cartridge or the switches