AERCO Packaged WaterWizard Steam-to-Water Heater - Manual (Page 25)

1B+ II Water Wizard Water Heaters
HE-110
Installation, Operation & Maintenance Manual OMM-0063_0C
MC2: 07/26/13 Page 25 of 50 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
87 in Figures 17 and 18) has not become clogged, and that the check valve at the hot
eater outlet is working properly (see Item 15, below). Make any necessary corrections.
15. The Anticipator Check Valves at the Heater hot water outlet is not working properly.
Disassemble and inspect the Check Valve, clean the Valve, and repair or replace any parts
as necessary per Steps 1 through 5 under DISASSEMBLY, Chapter 10, Section 10.4.1.
16. The Over-Temperature Limit System is out of adjustment of some component of the
system has failed. Check out the systems setting per Step 8 under OPERATING
PROCEDURES, Chapter 5. Inspect and repair or replace each component as necessary.
17. There is a leak in the Heater coil(s), steam riser, or condensate return, causing water
from the shell to leak into the heating coil system, or steam or condensate from the
coil system to the shell. To verify such a leak, shut off the steam supply and break a
connection in the Condensate Line – CAREFULLY to avoid being burned. Condensate will
drain from the coil system initially, but the flow should stop after a minute or two. If the flow
continues, water is leaking from the pressurized shell side to the tube side of the Heater.
Disassemble, inspect, repair (if possible), replace, and reassemble the Heater as outlined
below under DISASSEMBLY, Chapter 10, and REASSEMBLY, Chapter 12.
18. The Heater coils are scaled up. De-scale the Heater by thermal shock in the manner
outlined below under DESCALING BY THERMAL SHOCK METHOD, Chapter 9.
19. The Heater is being utilized at a rate higher than its design capacity. Contact the
nearest AERCO Representative for advice in remedying this problem.