Spiral & Round · Dampers & Life Safety
Volume damper in round branch
Balancing damper — Round branch
ConnectionSlip-fit damper collar
SupportAdjacent supports
How to install it
- 1
Install shaft horizontal/accessible where practical
- 2
connect both sides
- 3
support branch
- 4
set handle/locking quadrant
- 5
mark position
- 6
keep insulation clear.
Quality check
- Blade rotates fully
- handle accessible
- no buried quadrant
Stop and verify
Stop if ceiling/wall closure removes access