28
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-7680
Connecting to humidifier with tubing
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifi er. This will result in unacceptable
humidifi cation system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
See Figures 31-1 and 32-1 for interconnecting tubing pitch requirements
for single dispersion tube applications. See Table 34-3 for interconnecting
tubing pitch requirements for Rapid-sorb applications.
• Support tubing between the humidifi er steam outlet and the dispersion
system with pipe hangers. Failure to properly support the entire tubing
weight may cause damage to the humidifi er tank and void the warranty.
• Ground metal steam tubing. See “Grounding steam tubing” at right.
• 90° elbows are not recommended. DriSteem recommends 90° long
sweeps. Two 45° elbows, 1' (0.3 m) apart may also be used.
• Insulating tubing reduces the loss in output caused by condensation.
• If fl ux or any other surface preparation material is used when connecting
steam tubing and fi ttings, drain and fi ll the steam cylinder two times after
the fi rst half hour of steam production:
– Model XTP, step 5 on page 48
This will minimize the possibility of foaming in the steam cylinder.
Grounding steam tubing
The XT Series humidifi er has built-in functionality
for detecting and eliminating foaming in
the steam cylinder. However, because brief
periods of foaming are possible, grounding
metal steam tubing back to the humidifi er earth
ground lug is necessary. This earth ground
will prevent foam from creating an electrically
conductive path from the electrically charged
cylinder water to the metal steam tubing.
XT Series humidifi er
Pitch
To dispersion assembly
Tubing drip tee
8" (200 mm) recommended
6" (150 mm)
recommended
Open funnel or fl oor drain
1" (25 mm)
air gap
3/4" (DN20)
Pitch
Insulate tubing to reduce steam loss
90° long sweep or two 45° elbows
FIGURE 28-1: DETAIL OF VERTICAL RISER DRIPS
INSTALLATION
Dispersion: