Downflo II, Models DFT 2-4 and DFT 3-6
31
VEHMEPFPEHI
TS[IVTEGO
WIEPERX
WTEGIVVMRK
WIEPERX
HEQTIV
Damper Installation
A damper can be added to the power pack outlet to
limit and regulate airflow when unit is in operation.
1. Apply 1/4-in diameter, rope-type sealant toward
the inside edge of the bolt pattern on both sides
of the spacer ring.
2. Position the spacer ring on the units clean-air
outlet and align bolt patterns.
3. Apply silicone sealant, supplied with blower,
around the blower outlet.
4. Slide the damper collar over the blower outlet
and secure using four equally spaced self-
drilling screws supplied.
5. Loosen the wing nut on the damper and adjust
from 30 to 50% closed.
1. Apply sealant around the inside edge of the bolt
pattern on the power pack outlet.
2. Fasten damper to the blower outlet using the
hardware provided.
Radial Blade Damper Installation
Backward Inclined Damper Installation