TomBob
01-07-07, 03:15 PM
In my home theatre, I have a projector mounted behind a wall, in the attic space. The is an insulated box mounted to the backside of the wall surrounding the projector. An in line fan in ducted from the interior room space to the rear of the insulated box. This setup worked well for my ScreenPlay 4805, as is draws from the rear, fed by the fan, and exhausts thru the front which is open to the room. Through a relay, the fan was energized by the SPs 12V screen drop.
I just replaced the 4805 with a Sanyo PLV-Z5, which is significantly larger. I had a new insulated box fabricated to replace the old. This new box provides about 2-3" of clearance on all sides of the PLV-Z5. The new projector has air intake on the rear, so the old supply fan was reused in the new box. The exhaust is on the the left (facing the front) with the new projector - and is close to the side of the new insulated box. So, I added another inline fan, mounted in the sidewall of the insulated box, adjacent to the exhaust of the PLV-Z5 drawing air out of the insulated box.
I seek input regarding the impact of this set up on the longevity of the projector. I have run the projector for 6 hours straight in this setup with no apparent problems. I am assuming if it were overheating the unit would turn off. I did notice the top of the projector was relatively warm after the 5 hours, but is wasn't hot. I am entertaining make a larger box to increase the clearances - but don't know if that is necessary or needed.
Also, the PLV-Z5 lacks a 12v screen drop, so I am looking for another way to cycle the fans, other than manually. My preference is to automatically turn on the fans when the projector is turned on, and ideally, delay the shutdown of the fans for 3-5 minutes after the projector is turned off. Any ideas?
I just replaced the 4805 with a Sanyo PLV-Z5, which is significantly larger. I had a new insulated box fabricated to replace the old. This new box provides about 2-3" of clearance on all sides of the PLV-Z5. The new projector has air intake on the rear, so the old supply fan was reused in the new box. The exhaust is on the the left (facing the front) with the new projector - and is close to the side of the new insulated box. So, I added another inline fan, mounted in the sidewall of the insulated box, adjacent to the exhaust of the PLV-Z5 drawing air out of the insulated box.
I seek input regarding the impact of this set up on the longevity of the projector. I have run the projector for 6 hours straight in this setup with no apparent problems. I am assuming if it were overheating the unit would turn off. I did notice the top of the projector was relatively warm after the 5 hours, but is wasn't hot. I am entertaining make a larger box to increase the clearances - but don't know if that is necessary or needed.
Also, the PLV-Z5 lacks a 12v screen drop, so I am looking for another way to cycle the fans, other than manually. My preference is to automatically turn on the fans when the projector is turned on, and ideally, delay the shutdown of the fans for 3-5 minutes after the projector is turned off. Any ideas?