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CORNERMATIC PLUS
(1) Flange & Corner Requirements
The Cornermatic Plus is designed to insert TDF or TDC corners into ductwork. To ensure
the Cornermatic Plus operates as designed the TDF or TDC flange, corners and duct
fittings must meet specific criteria.
The width of the flange is shown below and must be maintained to ensure the corners are
pressed into the flange completely before the lip of the flange is crimped. Variations in
width will cause the corners to not seat completely or the corners may not be secured
properly.
Figure 2-2 TDC and TDF Duct Fitting Flange Requirements
The corners used in the Cornermatic Plus must also meet specific criteria. The only
corners guaranteed to work in the Cornermatic Plus are DuctMate corners or Mestek
Machinery Corners. Please contact Mestek Machinery for information on ordering
DuctMate or Mestek Machinery corners.
(2) Duct Requirements
To ensure proper corner insertion and crimping, the duct fitting must have a minimum 2
inch straight before the transition angle begins. This 2 inch straight is critical for heavier
gauges (16 or 18).
Also, critical for proper corner insertion and crimping is having proper lock seams.
Partially open or mismatched lock seams are just two of the common imperfections that
can cause problems inserting and crimping corners.
Proper maintenance, upkeep and adjustment of the duct making equipment are essential.
Please contact the Mestek Machinery service department regarding production of
ductwork.
Figure 2-3 Fitting Height Minimum
H. WEISS MACHINERY & SUPPLY
H. WEISS MACHINERY & SUPPLY
PHONE: (718) 605-0395 - www.hweiss.com
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