Page 22 • DRI-STEEM XT Series Electrode Steam Humidifier Installation, Operation, and Maintenance Manual
Dispersion: Interconnecting piping
requirements (continued)
Connecting humidifier to dispersion assembly with tubing or
pipe (continued)
• Insulating hard pipe reduces the loss in output caused by
condensation.
• When using hard pipe, take care to remove ALL traces of residual
materials used to assemble the pipe. This will minimize the
possibility of foaming in the steam cylinder. Denatured alcohol or
mineral spirits work best for removing residual materials.
• If the humidifier must be located above the dispersion assembly,
use the recommend installation as shown on Page 24.
• See the maximum steam carrying capacity table below.
Table 22-1:
Maximum steam carrying capacity and length of interconnecting vapor hose, tubing, and pipe*
Hose
†††
Copper or stainless steel tubing
and Schedule 40 steel pipe
Hose I.D. Maximum capacity Maximum length** Tube or pipe size*** Maximum capacity
Maximum developed
length
†
inches DN lbs/hr kg/h ft m inches DN lbs/hr kg/h ft m
DRI-STEEM white braided hose ——————
7/82220 9 10 3 ——————
1-3/8 35 75 34 10 3 ——————
DRI-STEEM black vapor hose ——————
1½ 40 150 68 10 3 1½ 40 150 68 20 6
2 50 250 113 10 3 2 50 220 100 30 9
3
††
80
††
450 204 80 24
4
††
100
††
750 340 100 30
5
††
125
††
1400 635 100 30
6
††
150
††
2300 1043 100 30
* Based on total maximum pressure drop in hose, tubing, or piping of 5" wc (1244 Pa)
** Maximum recommended length for vapor hose is 10' (3 m). Longer distances can cause kinking or low spots.
*** To minimize loss of capacity and efficiency, insulate tubing and piping.
†
Developed length equals measured length plus 50% of measured length to account for pipe fittings. If maximum developed length is more than 20' (6 m), a fill
cup extension kit is required.
††
Requires flange connection
†††
When using vapor hose, use DRI-STEEM vapor hose for best results. Field-supplied hose may have shorter life and may cause foaming in the evaporating
chamber resulting in condensate discharge at the dispersion assembly. Do not use vapor hose for outdoor applications.
XT_IOM_Jan_2008.pdf 24 11/19/2009 10:13:38 AM
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