Hydrostatically testing coils & risers, Reassembly of shell, Reinstalling heater in facility – AERCO Coil & Riser Replacement User Manual
Page 15: Startup procedure, He-109
PR2: 04/01/11 Page 15 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
8. Hydrostatically Testing Coils & Risers
9. Reassembly of Shell
10. Reinstalling Heater in Facility
Reassemble all components that were disconnected in paragraph 5.2. When re-installing the Thermal
Element into the Thermal Well Bushing in the Top Head, be careful not to damage the Element against
the internal Coils. Straighten the Element before inserting.
11. Startup Procedure
Follow the Operating Procedures in the appropriate O & M Manual listed in paragraph 3 (Reference
Documents).
Hydrostatically Testing Coils & Risers
1) Install fittings into the inlet and outlet of the Bottom for the Risers that can supply a hydrostatic
pressure source.
2) One fitting should have a valve for the release of internal air pressure.
3) The other fitting should be attached to a source to apply the maximum allowable working pressure,
(MAWP) to the internal Coil and Riser Bundle.
4) Apply MAWP to the Coil Bundle.
5) Close off both inlet and outlet valves to retain the internal pressure for 20 minutes.
6) If leaks are detected, remove the internal pressure.
7) Remove the leaking Coil and inspect for causes for leak.
8) If the leak is due to debris, clean the Coil and reinstall.
9) If there are damages to any surfaces, contact your AERCO Representative for instruction for returning
the failed Coil.
Section 8. Instructions
END
Reassembly of Shell
1) Install fittings into the inlet and outlet of the Bottom for the Risers that can supply a hydrostatic
pressure source.
2) One fitting should have a valve for the release of internal air pressure.
3) The other fitting should be attached to a source to apply the maximum allowable working pressure,
(MAWP) to the internal Coil and Riser Bundle.
4) Apply MAWP to the Coil Bundle.
5) Close off both inlet and outlet valves to retain the internal pressure for 20 minutes.
6) If leaks are detected, remove the internal pressure.
7) Remove the leaking Coil and inspect for causes for leak.
8) If the leak is due to debris, clean the Coil and reinstall.
9) If there are damages to any surfaces, contact your AERCO Representative for instruction for returning
the failed Coil.
Section 9. Instructions
END