Specifications

Page 24 • DRI-STEEM XT Electrode Steam Humidifier Installation, Operation, and Maintenance Manual
Dispersion:
Interconnecting piping requirements
Important:
Reducing the inside diameter of the
interconnecting piping will result in the
internal humidifier system pressure exceeding
the parameters for acceptable performance.
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Important:
Failure to follow the recommendations in
this section can result in excessive back
pressure on the humidifier. This will result
in unacceptable humidification system
performance such as leaking gaskets, blown
water seals, erratic water level control, and
spitting condensate from the dispersion tube.
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The steam outlet on the humidifier is sized to the output of
the humidifier. DO NOT use steam hose or interconnecting
tubing/piping with an inside diameter smaller than the humidifier
steam outlet. See note at left.
• See maximum steam carrying capacities in Table 24-1.
• If the humidifier must be located higher then the dispersion
assembly, use the recommend installation shown in Figure 28-1.
Connecting to humidifier with steam hose
• Support steam hose to prevent sags, or low spots, and to
maintain a minimum pitch of 2"/ft (15%) away from the
humidifier.
• Use DRI-STEEM steam hose. Other manufacturers of steam
hose may use unacceptable release agents or material mixes
that can affect humidifier system performance adversely. Using
hose from alternative manufacturers increases the possibility of
tank foaming and accelerated aging. Foaming causes condensate
discharge at the dispersion assembly.
• Do not use steam hose in outdoor applications.
• Do not insulate steam hose. Insulation causes accelerated heat
aging, causing the steam hose to become hard and susceptible to
failure due to cracks.
• For single tube applications, see hose kit sizes in Table 25-2.
Installation
Table 24-1:
Maximum steam carrying capacity and length of interconnecting steam hose, tubing, and pipe*
DRI-STEEM black steam 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
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 steam 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. See Figure 11-1.
††
Requires flange connection.
†††
When using steam hose, use DRI-STEEM steam 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 steam hose for outdoor applications.
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