![background image](http://html.mh-extra.com/html/carrier/59tp6b/59tp6b_installation-start-up-operating-and-service-and-maintenance-instructions_2562912028.webp)
28
LEVEL 0-IN. (0 MM) TO
1/2-IN. (13 MM) MAX
UPFLOW OR
DOWNFLOW
HORIZONTAL
MIN 1/4-IN. (6 MM) TO
1/2-IN. (13 MM) MAX
A11237
Fig. 25 -- Furnace Pitch Requirements
ANY COMBINATION OF 1, 2, OR 3 PERMITTED.
A11036
Fig. 26 -- Upflow Return Air Configurations and Restrictions
A11037
Fig. 27 -- Downflow Return Air Configurations
and Restrictions
HORIZONTAL TOP
RETURN NOT
PERMITTED FOR
ANY MODEL
A11038
Fig. 28 -- Horizontal Return Air Configurations
and Restrictions