New Guy ... Installing Harman XXv with Min. required vent

[Tristan]

I just bought the Harman XXV. I plan on installing it using the least min required venting option. Basically straight out the back, through the "outside air Kit" wall thimble, and terminate with a horizontal vent. The vent type i plan on using is Simpsons Pellet Vent Pro (1" min. req. clearance). I really just want this to be a neat, almost inisible vent set up. Does any one out there seem to think that this min. venting configuration have any inherent problems? I.e. draft issues, since there is no vertical segments alowing for natural draft. Does anyone have any experiences 9good or bad) with Simpsons Pellet Vent Pro? Please advise. Thank you.

 

[HarryBack]

You can do it.....as long as you follow clearance to combustables PLUS clearance to things that may ignite outside. For instance, with a minimum installation, you are MUCH more likely to get live cinders exiting the pipe. Where will they go? On the deck? Into a pile of leaves gathered by the wind below the pipe? Into the gas leak from that leaky old antique care outside? etc, etc. There are two major problems with minimal installations......no natural draft at all if the power goes out, and a strong wind could overpower your combustion fan and push exhaust back into the unit.....thats about it tho.

 

[Tristan]

thank you so much for your response. I really appreciate your advice. I think you are right about min. vent pipe install regarding inherent natural draft problems. I think what i will do is go with a 3 feet vert at the outside of the house, with adequate wall clearances ofcourse, then terminating with a 90 deg and a horizontal termination. I hope this will resolve the natural draft issue. Does this sound right? What about the simpson pellet vent pro? Does anyone have any experiences with this particular product? Good or bad? thank you again in advance.

 

[HarryBack]

the simpson pro vent is a new product....cant comment

your decision about the 3' lift outside sounds like a good one, but do yourself a favor and nix the horizontal termination....tends to soil the side of the house

 

[Tristan]

Thank you again. Is there a type of termination that i can use? It will be terminating somewhere along the wall. There are no windows and doors in this wall. The wall is vinyl siding. The roof will be well above the termination. What can you suggest that i use as a termination intead of a horizontal? Thank you again in advance.

 

[petejung]

Tristan - I did the same as you - I came out of the wall of the doghouse that previously ocntained a gas fireplace, turned it up 90 degrees to the vertical, ran it up 3 feet, which was almost to the top of the doghouse, and then turned it back horizontal and terminated it. Basically, I used the Simpson Dura Vent kit, but bought 3' solid sections of vent pipe instead of using all of the 1' sections. This was especially important as I did not want any joints inside my doghouse...

I did run a 1 foot section of pipe away from the doghouse before I terminated the venting, so the vent cap is now about 16" from the house. Time will tell if it gets real dirty or not.