507768-02B
Page 11 of 56
Issue 1904
Return Air Guidelines
Return air can be brought in through the bottom or either
side of the furnace installed in an upflow application. If the
furnace is installed on a platform with bottom return, make
an airtight seal between the bottom of the furnace and the
platform to ensure that the furnace operates properly and
safely. The furnace is equipped with a removable bottom
panel to facilitate installation.
Markings are provided on both sides of the furnace cabinet
for installations that require side return air. Cut the furnace
cabinet at the maximum dimensions shown on Page 2.
Furnace applications which include side return air and a
condensate trap installed on the same side of the cabinet
(trap can be installed remotely within 5 ft.) require either a
return air base or field-fabricated transition to accommodate
an optional IAQ accessory taller than 14.5”. See Figure 14.
Figure 14. Side Return Air
(with Transition and Filter)
Figure 15. Optional Return Air Base
(Upflow Applications Only)
Summary of Contents for BG961UHE
Page 3: ...507768 02B Page 3 of 56 Issue 1904 Figure 1 Parts Arrangement ...
Page 22: ...507768 02B Page 22 of 56 Issue 1904 Figure 25 Figure 26 ...
Page 37: ...507768 02B Page 37 of 56 Issue 1904 Figure 59 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC ...
Page 43: ...507768 02B Page 43 of 56 Issue 1904 Figure 67 Typical Wiring Diagram ...