TinnerFlow™2nd YearVAVs & Fan CoilsYELLOW · Check First
The auxiliary (secondary) overflow drain pan must be suspended directly beneath the entire footprint of the fan coil unit, extending out at least 2 inches past the unit edges on all sides. This catches any condensation overflow if the primary internal pan line plugs up.
The auxiliary (secondary) overflow drain pan must be suspended directly beneath the entire footprint of the fan coil unit, extending out at least 2 inches past the unit edges on all sides. This catches any condensation overflow if the primary internal pan line plugs up.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.