I recently picked up an older Reznor XL 170 shop heater. I am in the planning stages of installation and was wondering if I can run the exhaust on a combination horizontal/vertical run. I am installing the heater on the gable end of the shop approx 12'from floor. The shop peak is 20' from floor. I would really like to run exhaust out gable wall instead of vertical vent through roof. The heater doesn't have an exhaust fan. Thanks in advance for your input.
Last edited by satsopslim; 01-27-2008 at 03:01 PM.