Carrier 58 Series- Manuals

The draft hood relief air supply must be in the same atmospheric pressure zone as the combustion air inlet supply to the furnace. When a furnace is installed so that supply ducts carry air to areas outside the space containing the furnace, the return air must also be handled by duct(s) sealed to the...

RETURN OR SUPPLY AIR VENT TO ROOF I I I I I I I I i T D_L 12 IN MAX I -d ■= I so IN. ~ PER 1000 BTUH* INTERIOR HEATED SPACE -6IN MIN (FRONT) ISO IN # per 1000 HTBTUH* *-12 IN MAX RETURN OR SUPPLY AIR J *MINIMUM OPENING SIZE IS 100 SO IN MAKEUP AIR ISO IN -PER 5000 BTUH FROM OUTSIDE (RETURN AIR ONLY)...

GAS PIPING The gas supply line should be a separate line directly from the meter to the furnace, if possible. Refer to Table 1 for recommended gas pipe sizing. Do not use cast-iron or galvanized pipe. Table 1 — Maximum Capacity of Gas Pipe* NOMINAL I R O N PIPE SIZE (in.) Z ’ " 3 / 4 1 T 1 - 1 /...