Specifications

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Installation
Table 16-1:
Maximum steam carrying capacity and length of interconnecting vapor hose, tubing and pipe*
Vapor 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
†
DN40 68 kg/h 3 m DN40 68 kg/h 6.1 m
DN50 113 kg/h 3 m DN50 100 kg/h 9.2 m
* Based on total maximum pressure drop in hose, tubing or piping of 1250 Pa
** Maximum recommended length for vapor hose is 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.
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Important:
Reducing the inside diameter of the
interconnecting piping will result in the internal
humidifier system pressure exceeding the
parameters for acceptable performance.
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.
The steam outlet on the humidifier is sized to the output of
the humidifier. DO NOT use vapor hose or interconnecting
tubing/piping with an inside diameter smaller than the humidifier
steam outlet. See note at left.
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assembly, use the recommend installation shown in Figure 18-1.
Connecting to humidifier with vapor hose
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maintain a minimum pitch of 15% back to the humidifier.
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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.
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aging, causing the vapor hose to become hard and susceptible to
failure due to cracks.
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