Specifications

DRI-STEEM XT Electrode Steam Humidifier Installation, Operation, and Maintenance Manual • Page 39
Dispersion:
XT steam blowers
Installation
Steam outlet
Figure 39-1:
XTSB rise, spread, throw
Steam outlet
Rise
Spread
Throw
Air intake
OM-7598
Air intake
Table 39-1:
XTSB minimum non-wetting distances
XT
model
Maximum
steam
capacity
30% RH @ 70 ºF (21 ºC) 40% RH @ 70 ºF (21 ºC) 50% RH @ 70 ºF (21 ºC) 60% RH @ 70 ºF (21 ºC)
Rise Spread Throw Rise Spread Throw Rise Spread Throw Rise Spread Throw
lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m ft m ft m ft m
5 5 2.3 0.7 0.2 0.9 0.3 1.9 0.6 0.8 0.2 1.2 0.4 2.1 0.6 1.1 0.3 1.5 0.5 2.5 0.8 1.5 0.5 1.5 0.5 3.2 1.0
10 10 4.5 1.4 0.4 1.9 0.6 3.8 1.2 1.7 0.5 2.4 0.7 4.3 1.3 2.3 0.7 3.0 0.9 5.0 1.5 3.0 0.9 3.0 0.9 6.5 2.0
20 20 9.1 2.5 0.8 2.8 0.9 6.5 2.0 3.0 0.9 3.3 1.0 7.4 2.3 3.8 1.2 4.0 1.2 8.5 2.6 4.0 1.2 4.0 1.2 10.0 3.0
30 30 13.6 3.1 0.9 3.0 0.9 7.5 2.3 3.6 1.1 3.4 1.0 8.7 2.7 4.3 1.3 4.0 1.2 9.5 2.9 4.2 1.3 3.5 1.1 11.0 3.4
50 50 22.7 3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
75 75 34.0 3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
100 100 45.4 3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
150 150 68.0 3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
200 200 90.7 3.3 1.0 3.1 0.9 9.6 2.9 3.8 1.2 3.5 1.1 10.7 3.3 4.4 1.3 4.0 1.2 12.0 3.7 4.8 1.5 4.7 1.4 14.0 4.3
Rise: Minimum non-wetting height above the steam outlet of the XTSB
Spread: Minimum non-wetting width from the steam outlet of the XTSB
Throw: Minimum non-wetting horizontal distance from the steam outlet of the XTSB
mc_091310_1740
On a call for humidity, the controller closes the contactors to
energize the humidifier electrodes and the fan relay to energize the
XT steam blowers (XTSB). When the call for humidity is satisfied,
the controller opens the humidifier contactor but keeps the XTSB
running for a preset amount of time, which is adjustable via the
Vapor-logic4 Setup menu.
As steam is discharged from the XTSB, it quickly cools and turns to a
visible fog that is lighter than air. As this fog is carried away from the
XTSB by the airstream, it tends to rise toward the ceiling. If the fog
contacts solid surfaces (columns, beams, ceiling, pipes, etc.) before it
disappears, it can condense and drip. The greater the space relative
humidity, the further the fog will rise, spread, and throw.
Table 39-1 lists the maximum rise, spread, and throw non-wetting
distances for XT humidifiers with XTSBs. Surfaces cooler than
ambient temperature, or objects located within this minimum
dimension, can cause condensation and dripping. To avoid steam
impingement on surrounding areas, observe the minimum non-
wetting distances in the table.
XTSBs are field wired to the XT humidifier blower terminals. A
wiring diagram is included with the XTSB.
mc_091310_1741
mc_110110_1530