Combustion Air 4VQQMZDPNCVTUJPOBJSUPUIFVOJUTBTQFSUIF/BUJPOBM'VFM(BT$PEF"/4*;
Provide adequate combustion air so as to not create negative pressure within the building.
r1SPWJEFUXPQFSNBOFOUPQFOJOHTUPBMMPX circulation of combustion air.
r.BLFFBDIPQFOJOHTRVBSFJODIFTJGUIFZ provide indoor air, and 100 square inches for outdoor air.
r*GUIFVOJUJTJOTUBMMFEJOBNFDIBOJDBMDMPTFU QSPWJEFB NN DMFBSBODFJOGSPOUPG the unit to the door.
r*GDPNCVTUJPOBJSXJMMCFQSPWJEFEUISPVHIB duct, size the duct to provide 60 cubic feet of fresh air per minute.
10" (250mm)
20" (500mm)
20" (500mm)
10" (250mm)
Openings supplying indoor air
19
