Jason211
New Member
I'm taking an SCO gas course and struggling with the gas venting questions like this one.
-Two furnaces without draft hoods, each rated at 110 000 Btuh (32 kW), one hot-water heater with a draft hood rated at 75 000 Btuh (23 kW) and one unit heater with a draft hood rated at 85 000 Btuh (25 kW) are installed in an enclosure in a building. The combustion air is taken from the structure. The equivalent leakage area less than 78 in.2 (0.05 m2). The structure is 45 ft (13.7 m) long, 20 ft. (6.1 m) wide and 12 ft. (3.7 m) high. What are the required sizes into the structure and into the enclosure in free area opening, rectangular, and round duct?
I'm adding up my total Btuh's and checking tables 8.2 and 8.3 in the code.
-Two furnaces without draft hoods, each rated at 110 000 Btuh (32 kW), one hot-water heater with a draft hood rated at 75 000 Btuh (23 kW) and one unit heater with a draft hood rated at 85 000 Btuh (25 kW) are installed in an enclosure in a building. The combustion air is taken from the structure. The equivalent leakage area less than 78 in.2 (0.05 m2). The structure is 45 ft (13.7 m) long, 20 ft. (6.1 m) wide and 12 ft. (3.7 m) high. What are the required sizes into the structure and into the enclosure in free area opening, rectangular, and round duct?
I'm adding up my total Btuh's and checking tables 8.2 and 8.3 in the code.
