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S9V2-VS-SVX001-1B-EN
Table 18. Return Duct Connections
Return Ducting General Guidelines
• Back returns are not allowed on any S-Series furnaces
• Side returns are not allowed on downflow S-Series furnaces
• Mounting flanges must be located on ducting
• Shoot screws through the mount flanges into the furnace cabinet
• Always seal per local codes and requirements
• Furnace, coil, and ducting must be supported separately
• An external overflow drain pan must be installed in all applications over a finished ceiling to prevent property damage
Upflow Furnace with Bottom Return in Closet with Remote
Filter
Refer to Step 1., Step 2., Step 3., Step 4.
Upflow Furnace with Bottom Return in Closet with Filter Box
Refer to Step 1., Step 5., Step 6., Step 4.
Upflow Furnace with Bottom Return Mounted on a Ducted
Pedestal
Refer to Step 1., Step 7., Step 8., Step 4.
Upflow Furnace with Bottom Return Mounted on a Ducted
Pedestal with Filter Box
Refer to Step 1., Step 9., Step 4.
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