Specifications

9
50% RH 60% RH
Humidifier
Size
Rise
(ft.)*
Carry
(ft.)*
Rise
(ft.)*
Carry
(ft.)*
VM4 1.0 3.0 1.0 3.5
VM6 1.0 3.5 1.5 3.5
VM8 1.5 5.0 2.0 5.0
VM10 1.5 6.0 2.0 6.0
VM12 2.0 7.0 2.0 8.0
VM16 2.0 8.0 2.0 8.5
VM25 5.0 15.0 5.0 16.0
VM34 6.0 20.0 7.0 22.0
AREA-TYPE APPLICATION USING SDU
Table 9-1 lists the recommended minimum vertical
(RISE) and horizontal (CARRY) clearances for area-type
humidifiers at 50% and 60% RH of the space.
The SDU contains a 435 cfm blower (120/1/60) wired
independently of the VAPORMIST humidifier. A wiring
diagram of the SDU is included with the unit.
On a call for humidity, the humidifier will begin producing
steam and the start relay will energize the SDU blower.
When the steam reaches the SDU, a time delay switch
is activated. The humidifier will continue to produce
steam until the humidistat becomes satisfied, shutting off
the humidifier and activating the start-relay. The blower
will continue to run until the time delay switch is acti-
vated.
Once the SDU is mounted, panel access keys should be
removed and secured elsewhere.
Table 9-1: SDU Visible Fog Travel
*Rise: Height visible fog rises above discharge grille of humidifier.
Carry: Horizontal distance visible fog travels from humidifier.
Surfaces cooler than ambient or objects directly in the path of visible fog
discharge may cause condensation and dripping.
¼" NPT Coupling
¼" NPT Drain Line
(Not Supplied by
DRI-STEEM)
6" Minimum
3-5" Water Seal
Open Drain
1" Air Gap
OM-208
OM-54
435 CFM Fan
Wall Bracket
Wall Bracket
(Shipped Loose)
½" Condult
Knockout
10.250
16.000
10.204
5”
Steam
Inlet
Support
Foot
17.150
24.000
Steam
Outlet
Condensate
Outlet
Figure 9-1: SDU Mechanical Detail
Figure 9-2: SDU Drain Detail
VM-IOM-1996 Scan.pdf 9 11/19/2009 9:57:23 AM