Drilling through brick fireplace-Gas Logs

Hello (note:I seem to be having posting problems, so excuse me if this shows up twice)
I am installing gas logs in a 1960s era brick fireplace, and would like advice on drilling through the firebrick and outside brick chimmney.
I'm planning to rent a hammer drill and masonry bit, and will follow all requirements from the gas log manufacturer (I don't actually have the logs yet).
Questions: 1. is the angle I drill through the fireplace important, or can I just drill horizontally from the firebox to the outside of the chimney?
2. I'm planning on putting the gas access hole in the back corner of the firebox, near the floor of the firebox to avoid overheating. Is this the best location? (there's no ash dump; firebox is about 36"wide/24"deep/30"high)
3. can I seal the hole around the gas line by filling it with silicone from the outside?
4. I've never drilled through firebrick or brick before, so any advice to keep from damaging the surrounding brick would be appreciated.
Thank you for any advice! DanH
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well i did just this a couple months ago
of course i could be wrong but
you can do it by hammer and cold chisel
start on the inside going out of course but attack a mortar joint where 3 bricks come together
getting thru that is easy and then you can widen without much trouble to fit the pipe you want
maybe punch thru from outside too and align holes
biggest problem is where you poke thru outside so you kinda have to go easy and adjust angle so you don't go right in the middle of a brick
but did it and everything seems to be fine
bill
On Thu, 06 Nov 2003 03:30:00 GMT, DanH

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DanH wrote:

Just did another one the other day. Drill from the outside to the inside. Minimizes blowout of the brick. Take careful measurements and you should be OK.
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