Roof Pitch Leaves the Curb or Duct Connection Out of Alignment
Verify the curb, support rail, equipment, and duct connection elevations from the approved roof and equipment references before fabricating a field transition.
The roof pitch puts the equipment opening out of alignment with the interior drop even though the plan dimensions match. I measured both curb sides and the duct elevation. Can we verify the approved adapter or support correction before fabrication?
Watch out
Do not level the connection by crushing gasket, twisting flex, stacking loose material, or altering the curb without approval.
Check
Confirm roof slope and high/low side elevations.
Check curb and equipment orientation.
Measure supply and return openings independently.
Verify roofing, insulation, and service clearances.
Steps
Confirm roof slope and high/low side elevations.
Check curb and equipment orientation.
Measure supply and return openings independently.
Verify roofing, insulation, and service clearances.
Say this to your foreman
The roof pitch puts the equipment opening out of alignment with the interior drop even though the plan dimensions match. I measured both curb sides and the duct elevation. Can we verify the approved adapter or support correction before fabrication?