AERCO Coil & Riser Replacement - Manual (Page 8)

PR2: 04/01/11 Page 8 of 16 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
Coil/Riser Replace Instructions for Helitherm Water Heaters
Technical instructions TID-0038_0A
HE-109
6.2 Preparation of Riser and Return
SPUD
THREADS
SEALING
SURFACE
STEAM RISER OR
CONDENSATE RETURN
SPUD
Figure 2: Preparation of Riser/Return Spuds
Preparation of Riser and Return
1) Visually inspect all Steam Riser and Condensate Return Spuds, (Figure 2) threads and sealing
surfaces for damage, scratches, braze material and cleaning deposits. If defects are found with the
Spud threads or sealing surfaces, contact your AERCO Representative for instruction to return the
defective Riser.
2) Using a brass wire brush, clean the threads of the Spuds. Use care to avoid scratching the sealing
surfaces of the Spuds. Scratches can cause a leak path under the Coil Gasket. After brush cleaning,
wipe with a clean lint-free cloth.
3) Using a brass wire brush, clean the pipe threads on the Riser. After cleaning, wipe with a clean lint-
free cloth.
4) Wrap two layers of Teflon tape around the Riser NPT threads.
Section 6.2 Instructions
END
CAUTION!
THE USE OF TEFLON TAPE OR ANY LUBRICANT ON THE THREADS OF THE SPUDS
IS PROHIBITED AND MAY VOID THE WARRANTY.