37
XT SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WITH HEADER INSIDE OF DUCT FOR HORIZONTAL AIRFLOW
Note: See the instructions for installing Rapid-sorb with the header outside the
duct for horizontal airfl ow.
1. Mark and cut holes in ductwork or air handler for steam header
pen e tra tion, con den sate drain piping, and head er support bracket fastener.
Allow 1/8"/ft (1%) header pitch toward the support bracket when you drill
the hole for the header support bracket fastener.
2. Loosely fasten the header in place.
3. Rotate the header 90° so the header stubs point hor i zon tal ly in the duct.
When installing in an air handler, the rotation of the header is often less
than 90°. Typically, due to the condensate drain piping re quire ments, the
header can be set on the fl oor of the air handler, assembled in the vertical
position, and then raised and mounted in place.
4. Mount the dispersion tubes on the header with the slip couplings or hose
cuffs:
• When installing slip couplings for 1½" (DN40) dispersion tubes, take
care not to shear O-rings.
• Set slip coupling on header stub or dis per sion tube so O-ring is resting
on face of tubing.
• Rotate slip coupling while pushing it onto the tubing.
• O-rings are lubricated at factory. If additional lubrication is necessary,
DO NOT use petroleum-based lubricant.
5. Allow the dispersion tubes to rest against the bottom of the duct.
CAUTION
Operate Rapid-sorb within rated steam
capacity
Excessive steam fl ow to the Rapid-sorb
steam dispersion assembly can
cause condensate to exit the tubelets,
which can cause water damage and
standing water in the duct or air
handler.
To avoid condensate exiting the
tubelets, do not operate the Rapid-sorb
beyond its rated capacity.
With header outside of duct for horizontal
airflow
1. Mark and cut holes in the ductwork for the
dispersion tubes. Use the L-bracket as a
template to mark the holes on the duct fl oor.
2. Temporarily, loosely suspend or support the
header below the fi nal location. Vertical
balance point of the dispersion tube length
dictates where the header should be
suspended or temporarily supported.
3. Continue with Step 4 at right.
INSTALLATION
Rapid-sorb
Dispersion: