Specifications

12
VAPORMIST
®
DISPERSION
SDU-E: Rise, throw and spread
SDU-E minimum non-wetting distances
Table notes:
Rise: Minimum non-wetting height above the steam outlet of the SDU-E
Throw: Minimum non-wetting horizontal distance from the steam outlet of the SDU-E.
Spread: Minimum non-wetting width from the steam outlet of the SDU-E.
Steam outlet
Air intake
grille
Rise
Spread
Throw
DC-1027
As steam is discharged from the SDU-E, it quickly
cools and turns to a visible fog that is lighter than air.
As this fog is carried away from the SDU-E by the
airstream, it tends to rise toward the ceiling. If this fog
contacts solid surfaces (columns, beams, ceiling,
pipes, etc.) before it disappears, it could collect and
drip as water. The greater the space relative humidity,
the more the fog will rise, throw and spread.
The table below lists the minimum rise, throw and
spread non-wetting distances for SDU-E area-type
humidifiers at 40%, 50% and 60% RH in the space.
Surfaces cooler than ambient temperature, or objects
located within this minimum dimension, may cause
condensation and dripping. To avoid steam
impingement on surrounding areas, observe the
minimum non-wetting distances in the table below.
The SDU-E contains a 545 cfm blower (120 V, single-
phase, 60 Hz) and an airflow proving switch field-wired
to the VAPORMIST humidifier electrical panel. A wiring
diagram of the SDU-E is included with the unit.
On a call for humidity, the humidifier begins producing
steam and the start relay energizes the SDU-E blower.
When the call for humidity is satisfied, the
VAPOR-LOGIC
®
3
microprocessor keeps the blower
running to disperse residual moisture using a time-
delay.
Model
40% RH @ 70 °F (21 °C) 50% RH @ 70 °F (21 °C) 60% RH @ 70 °F (21 °C)
Rise Throw Spread Rise Throw Spread Rise Throw Spread
ft m ft m ft m ft m ft m ft m ft m ft m ft m
VM-2 1.0 0.3 5.0 1.5 1.0 0.3 1.5 0.5 6.5 2.0 1.5 0.5 2.5 0.8 7.5 2.3 2.5 0.8
VM-4 1.0 0.3 5.0 1.5 1.0 0.3 1.5 0.5 6.5 2.0 1.5 0.5 2.5 0.8 7.5 2.3 2.5 0.8
VM-6 1.0 0.3 5.0 1.5 1.0 0.3 1.5 0.5 6.5 2.0 1.5 0.5 2.5 0.8 7.5 2.3 2.5 0.8
VM-8 1.0 0.3 5.5 1.7 1.0 0.3 1.5 0.5 6.5 2.0 1.5 0.5 2.5 0.8 7.5 2.3 2.5 0.8
VM-10 1.5 0.5 6.0 1.8 1.5 0.5 2.0 0.6 7.0 2.1 2.0 0.6 3.0 1.0 8.0 2.5 3.0 1.0
VM-12 1.5 0.5 6.0 1.8 1.5 0.5 2.0 0.6 7.0 2.1 2.0 0.6 3.0 1.0 8.0 2.5 3.0 1.0
VM-14 2.0 0.6 7.0 2.1 2.0 0.6 2.0 0.6 7.0 2.1 2.0 0.6 3.0 1.0 9.0 2.7 3.0 1.0
VM-16 2.0 0.6 7.0 2.1 2.0 0.6 2.0 0.6 7.0 2.1 2.0 0.6 3.0 1.0 9.0 2.7 3.0 1.0
VM-21 2.0 0.6 7.5 2.3 2.0 0.6 2.5 0.8 10.0 3.0 2.5 0.8 3.0 1.0 12.0 3.7 3.0 1.0
VM-25 2.0 0.6 8.0 2.5 2.0 0.6 2.5 0.8 10.5 3.2 2.5 0.8 3.5 1.1 12.5 3.8 3.5 1.1
VM-30 2.0 0.6 8.0 2.5 2.0 0.6 2.5 0.8 10.5 3.2 2.5 0.8 3.5 1.1 12.5 3.8 3.5 1.1
VM-34 2.0 0.6 8.0 2.5 2.0 0.6 2.5 0.8 10.5 3.2 2.5 0.8 3.5 1.1 12.5 3.8 3.5 1.1
VM99-C-0302.pdf 12 11/19/2009 9:51:32 AM