North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim
armstrong
international.com
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit
armstrong
international.com for up-to-date information.
17
Connect dispersion tube(s) to EHU tank using 2” (5 cm) nominal insulated copper pipe and hose cuffs provided. We do not
suggest steam distribution piping of field supplied rubber based compounds to be used for any EHU application. Pitch pipe
back to unit 1” (2.5 cm) per foot. The steam pipe must be free of kinks and sags to allow for gravity drainage of condensate.
Maximum pipe run distance from tank to dispersion tube is 40 feet (12m) equivalent piping length
Avoid excessive
use of elbows or 45° changes in direction. A “P” trap drain should be installed every 20 feet (6m) of piping run or at the
bottom of vertical runs that cannot drain back to the tank. If duct static pressure plus piping back pressure is greater than 6”
(152.4mm) WC, please consult the factory.
Step 4 - Electrical connections
ELECTRICAL SERVICE WIRING
Refer to the nameplate on the unit for recommended fuse size. It relates the fuse size to the appropriate branch size. A
complete wiring diagram example is located inside the door of the humidifier.