How to do a retro fit install between joists with not attic access. The attic is shallow flat roof configuration and the instructions are from being on top of joists for install.
SOURCE: trying to uninstall a Nutone 8663NLP ceiling
Hi, Yes the fan box enclosure is either nailed or screwed to the joist on one end. Typically, the enclosure has a couple (2) mounting tabs that extend past the ends of the metal box about 1 inches. That is where the fasteners (either nails or screws) that mount the box to the joist.
The easiest way to get the fan off, without tearing up the ceiling drywall, etc. is to use either a hacksaw blade in a handle that lets you extend the blade past the tool so you can saw through the fasteners on each side.
The other option is to use a Reciprocating electric saw (Sawzall type) with a bi-metal blade to do the same thing, cut through the fasteners.
My advice for both ways to cut off the nails or screws, is to put the saw straight up with the blade facing in towards the fan enclosure at an angle of about 30-45 degrees so you're cutting inwards, toward the rest of the fan.
By doing the cutting this way, if you should happen to slip, you won't risk cutting into the ceiling outside the fan/light opening. Just a little trick to save on drywall repairs to minimize the chance of damage.
Make sure that the power is off to the fan/light before trying to remove the enclosure so you don't have to worry about nicking the wires above the ceiling while removing the metal enclosure.
Hope you find this Very Helpful and best regards!
SOURCE: no clear installation instructions for electric box on air vent
Go to their website, they have installation instructions, pretty simple
SOURCE: My newly installed Broan-NuTone attic
Hi. The most likly cause of this type problem is the thermostat. Check the thermostat housing is it hot to the touch, is it close to a heat soarse, suchas, a motor or flu pipe for a water heater. If the thermostat has a adjustable heat range setting try setting it to the lowest setting if this shuts the unit off the calibration of the unit may not be set right. If the unit is new this should be covered under warranty.
SOURCE: I would like to replace
You can buy a replacement motor assembly for that model.
http://vacuums-intercoms.centralvacuumstores.com/search?w=8663rmsa&af=type%3Aproduct&asug=&x=0&y=0
http://parts.broan-nutone.com/nutone/Shop?actn=quicksearch&searchtype=all&indextype=7&keyword=8663rmsa&Search.x=0&Search.y=0
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