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2 preparation of riser and return, He-109 – AERCO Coil & Riser Replacement User Manual

Page 8

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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.