Specifications
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Installing Space Distribution Units (SDUs)
Provide at least 6" (150 mm) clearance on each side of the SDU.
Field wiring is required to connect the SDU fan and airflow proving
switch terminals to Vapormist electrical panel terminals. Refer to
the external connections diagram in the package shipped with your
unit.
When performing Vapormist maintenance
If the SDU-E or SDU-I is installed immediately above the
Vapormist, disconnect both hose clamps on the steam hose, grip
the hose and rotate it to break it loose from the tubing, and then
slide the hose up onto the SDU steam tube until sufficient clearance
is provided to move the tank.
Important: Maximum ambient RH must not exceed 45% for
the SDU-I to operate properly.
Figure 19-1:
SDU-I mechanical detail
Humidified air
discharge grille
24.2"
(615 mm)
18.6"
(472 mm)
10.9"
(276 mm)
1½" (DN40)
steam inlet
Front view
Side view
16.1"
(409 mm)
Air intake grille
2.25"
(57 mm)
DC-1076
Figure 19-2:
SDU-E mechanical detail
Steam
outlet
24.2"
(615 mm)
18.6"
(472 mm)
10.9"
(276 mm)
1½" (DN40)
or 2" (DN50)
steam inlet
Front view
Side view
16.1"
(409 mm)
Steam inlet
2.25"
(57 mm)
DC-1078
¾" (DN20) pipe
thread drain
nipple.
See Note
below.
3.2" (82 mm)
Note: The SDU-E dispersion box requires an installed condensate drain line
and water seal, provided by installer. See Page 20.
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Table 19-1:
SDU specifications
SDU-I SDU-E
Amps at 120V (50/60 Hz) 3.20 2.07
Horsepower 1/5 1/8
Airflow
cfm 760 545
m
3
/s 0.36 0.26
dB* 58 64
Note:
* Measurement taken 6.5' (2 m) in front of SDU cabinet.
Figure 19-3:
Vapormist with an SDU-I
OM-282-4
24"
(610 mm)
SDU
chassis
16"
(406 mm)
16"
(406 mm)
Keyhole for
3/8" dia. (M10)
fasteners
3" (76 mm)
3" (76 mm)
Keyhole for
3/8" dia. (M10)
fasteners
Vapormist
chassis
18.50"
(470 mm)
17.75"
(451 mm)
18.02"
(458 mm)
0.25"
(6.4 mm)
Figure 19-4:
Vapormist with an SDU-E
OM-282-7
16"
(406 mm)
18.5"
(470 mm)
16"
(406 mm)
3" (76 mm)
18.02"
(458 mm)
16"
(406 mm)
3" (76 mm)
24"
(610 mm)
2" (51 mm)
SDU
chassis
Keyhole for
3/8" dia. (M10)
fasteners
Keyhole for
3/8" dia. (M10)
fasteners
Vapormist
chassis
VM-IOM-1108.pdf 21 4/21/2010 1:36:21 PM