Carrier 59SP5A Installation, Start-Up, Operating And Service And Maintenance Instructions page 26

COMBUSTION - AIR PIPE
(SEE VENTING SECTION)
2-IN.
(51 mm)
Fig. 27 - - Working Platform for Attic Installation
Fig. 28 - - Suspended Furnace Installation
26
30 IN. (762 mm)
MIN. WORK AREA
ROLLOUT PROTECTION REQUIRED
Install 12" x 22" (305 x 559 mm) sheet
metal in front of burner compartment
area.
COMBUSTION-AIR PIPE
(SEE VENTING SECTION)
2-IN.
(51 mm)
A11154
A11155