Specifications

DRI-STEEM
®
Installation Guide: Humidifier dispersion and humidity sensor placement 2 of 2
DC-1083
Duct
Less airflow on this
side of elbow
A
Airflow
Duct high limit humidistat
3' to 5'
(1 m to 1.5 m)
8' to 12'
(2.4 m to 3.7 m)
B
A
irflow
Mist may collect on vanes
Location A is the best choice. Better absorption occurs on the downstream side of an elbow than on the
upstream side.
Location B is the second-best choice. Installing upstream of an elbow can cause wetting at the turning vanes.
In cases where it is structurally impossible to avoid Location B, use a multiple tube dispersion unit to ensure
complete absorption. Also, since more air flows along the outside of a turn, better absorption occurs if the
humidifier discharges proportionately more steam in that part of the airstream.
At both locations, discharging steam against or perpendicular to the airstream gives slightly better mixing and
absorption than discharging with the airstream.
Example 2: Placement of a dispersion unit near an elbow
These arrows show
dispersion discharge
against airflow.
These arrows show
dispersion discharge
against airflow.