26
STEAM INJECTION INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
DC-1067
From steam source
Separator
Condensate drain
12" (305 mm) min.
Secure and seal escutcheon plates
Dispersion tube
Secure end of tube to duct
using support bracket
(0.421" dia. [11 mm] holes
in top, bottom, and end of
bracket)
Piping downstream from strainer
should be same size as strainer.
4" (100 mm) min.
Drip
3/4" pipe thread (DN20)
Duct (minimum duct
height is 9" [229 mm])
Airflow
Level
Tubelets (steam orifices) always point
up with vertical airflow. Do not install
insulated jackets in vertical downflow
applications. See Note 5 on Page 23.
SINGLE-TUBE HUMIDIFIER
Isolation valve (by others)
Steam valve and actuator
(see Note 4)
Install strainer within
3' (1 m) of humidifier
(see Note 4)
Trap (see Note 7 on Page
23)
NOTES:
1. To avoid metal fatigue, allow for dispersion tube thermal expansion.
2. Dashed lines indicate provided by installer; right-hand discharge shown.
3. Dri-calc is DriSteem’s free sizing and selection software available at www.dristeem.com.
4. Steam valve and strainer sizes are provided by Dri-calc (Note 3).
5. See “Piping notes” on Page 23, and see Pages 14 and 15 for more information about trap types and trap
piping.
mc_051011_0805
Field piping
FIGURE 26-1: HORIZONTAL DISPERSION TUBE INSTALLED IN A VERTICAL AIRFLOW
