38
STEAM INJECTION INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Maxi-bank option piping notes
MAXI-BANK HUMIDIFIER
1. Refer to piping drawings on Pages 40 – 44.
2. Dashed lines in drawings indicate provided by installer.
3. For total dispersion tube lengths of more than 45' (13.7
m), see Step 5 note Page 36.
4. When installing in a horizontal airflow:
Slightly better mixing with less visible vapor travel occurs
when discharged steam blows against the airflow,
rather than with the airflow. Therefore,
when using
noninsulated steam jackets in a horizontal airflow
(as
shown in the drawings on Pages 40 – 43), position
dispersion tubelets (steam orifices) so that they face into
the airflow. If the dispersion tube has an insulated jacket,
the discharged steam must blow with the airflow to avoid
condensation that may occur when discharged steam
contacts the cooler insulated jacket. Therefore,
when
using insulated steam jackets in a horizontal airflow
,
position dispersion tubelets so that they discharge steam
with the airflow, and also add 24" (610 mm) to the non-
wetting absorption distance.
5. When installing in a vertical airflow:
Always point tubelets (steam orifices) up with vertical
airflow.
Important: If installing insulated steam jackets in a vertical
airflow, install only in an upflow application and add
24" (610 mm) to the non-wetting absorption distance. Do
not install insulated steam jackets in a vertical downflow
application.
6. Jacket piping size:
• 1/2" pipe thread (DN15) for Model 60 tube(s)
• 3/4" pipe thread (DN20) for Model 70 tube(s)
• 1½" pipe thread (DN40) for Model 80 tube(s)
7. After the unit is installed, secure steam jacket piping to
the tube header.
