Steam Information - American Dryer AD-202 Installation Manual

H. STEAM INFORMATION
It is your responsibility to have ALL steam plumbing connections made by a qualified professional to ensure that
the installation is adequate and conforms to local and state regulations or codes.
IMPORTANT: Failure to comply with the requirements stipulated in this manual can result in
component failure, which will VOID THE WARRANTY.
NOTE: In standard format this dryer is manufactured with a pneumatic (piston) damper system, which
requires an external supply of clean, dry, and regulated air (80 psi ± 10 psi [5.51 bar ± 0.69
bar]). Refer to Steam Damper Air System Connections, Section H, item 4. This dryer
may be provided with an optional steam solenoid valve, in which case, no pneumatic steam
damper system is provided.
1. Steam Coil pH Level
The normal pH level for copper type steam coils must be maintained between a value of 8.5 to 9.5. For
steel type steam coils the pH level must be maintained between a value of 9.5 to 10.5. These limits are set
to limit the acid attack of the steam coils.
IMPORTANT: Coil failure due to improper pH level will VOID THE WARRANTY.
2. Steam Requirements – High Pressure
Inlet ________ 1-1/2" N.P.T. Supply Line Connection – qty. one (1) at top manifold.
Return ______ 1-1/2" N.P.T. Return Line Connection – qty. one (1) at bottom manifold.
Maximum
Heat Input (Normal Load)
Consumption (Approximate)
Shaded areas are stated in metric equivalents
* The minimum operating pressure for optimum results is 100 psig (689.47 kPa).
3. Installation Instructions
To ensure an adequate supply of steam is provided, be sure that the steam supply line and steam return line
are sized and laid out as stipulated in this manual. Inadequate steam supply line and steam return line or
improper steam plumbing will result in poor performance and can cause component failure. Clean, dry
steam must be provided to the dryer.
IMPORTANT: Steam coil failure due to water hammer by wet steam will VOID THE WARRANTY.
a. The presence of condensate in the steam supply line will cause water hammer and subsequent heat
exchanger (steam coil) failure. The steam supply connection into the main supply line must be made
with a minimum 10-inch (25.4 cm) riser. This will prevent any condensate from draining towards the
dryer.
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OPERATING STEAM PRESSURE
American Dryer Corp.
125 psig* 861.84 kPa
14.5 Bhp
245 kg/hr
540 lb/hr
113289 - 10