Comfort Systems · Ceiling Cassettes
Cassette with fresh-air knockout
Ceiling cassette unit — Ceiling
ConnectionPrimary services + outside-air duct
SupportUnit support plus OA branch support
How to install it
- 1
Hang unit
- 2
open approved knockout
- 3
install collar
- 4
connect small outside-air branch independently
- 5
connect services
- 6
test airflow/drain.
Quality check
- OA collar sealed, branch supported, unit casing not distorted
Stop and verify
Stop if manufacturer does not permit OA connection