AGATWNPME01B: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
L11F093 / L11F094
NOTE:
Upflow - Single Return
Return duct cannot obstruct access to either furnace
Return Air can enter through any combination of:
a. Left side only
a. Right side only
b. Bottom only
c. Back of platform when height of platform equals
Dimension “A” as shown
NOTE:
Upflow - Two Returns
When furnaces are installed back-to-back (not shown), return duct
MUST connect to the common return plenum and side inlet of BOTH
surfaces.
Return duct cannot obstruct access to either furnace.
Fig. 4 – Upflow Ductwork Connections
(Condensing model shown - comparable to Non-Condensing model)
L11F095A
NOTE:
Downflow Application
Do not connect return air to any side of the furnace
Connect return air plenum as shown
NOTE:
Horizontal Application
Do not connect return air to any side of the furnace.
Do not stack condensing furnaces on top of each other.
Horizontal stacking only permitted with mid-efficiency furnaces.
Back-to-back installations, platform or suspended is approved for all
models.
For back-to-back installations, Dimension “A” is measured across the
front of one furnace, similar to upflow/downflow installations.
NOTE:
Refer to the Installation, Start-Up, and Operating Instructions supplied with each furnace for information on venting, clearances, start-up,
maintenance, and other information not covered in this publication.
Fig. 5 – Downflow/Horizontal Ductwork Connections
(Condensing model shown - comparable to Non-Condensing model)
Common
Supply Air
Plenum
A
A
A
Common Return Air
Plenum
Common
Supply Air
Plenum
Common Return Air
Plenum
Top View
