Merging Fan Stages 1 & 2 - Airstream INTER 2V4SA User Manual

INTER 2V4SA
7.1.1. Merging Fan Stages 1 & 2
The transition from Stage 1 to Stage 2 can
create jumps in the volume of displaced air.
To prevent this, Stage 1 fans automatically go
to their Override Minimum Speed when stage
2 starts. As the room temperature increases,
Variable
Stage 1 speed
100%
Stage1 Override
Min speed
Stage 1
Min speed
Off
Variable
Stage 2 speed
100%
Stage 2
Min speed
Off
Merge between Stages 1 and 2
(with positive Stage 2 Offset)
Stage 1 Bandwidth
Set Point
Stage 1 Bandwidth
Set Point
fan Stages 1 & 2 both increase in speed to
create a smooth progression and both reach
their maximum speed at the end of Stage 2
Bandwidth. Refer to 7.2 on page 20 to set the
Override Minimum Speed for stage 1.
S2 Offset Stage 2 Bandwidth
S2 Offset Stage 2 Bandwidth
INTER 2V4SA, rev.02
Room T°
Room T°
17