AERCO Packaged WaterWizard Steam-to-Water Heater - Manual (Page 32)

HE-110
1B+ II Water Wizard Water Heaters
OMM-0063_0C Installation, Operation & Maintenance Manual
Page 32 of 50
MC2: 07/26/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
10.5. PREPARING TO REMOVE THE HEATER SHELL
Note that all part item numbers are given in parentheses ( ) in the instructions below refer to
those shown in Figures 14, 15, 16, 17, or 18.
Also, Note that it is not necessary to disassemble or remove the Check valve Assembly (see
above) in order to remove the Heater Shell.
Figure 12: Part Reference for Heater Shell Removal
Preparation for Heater Shell Removal Instructions
1. Shut down and drain the Heater in accordance with Steps 1 through 4 in ROUTINE
MAINTENANCE, Chapter 6.
2. If a self-contained Control Valve is being used, remove the Valve’s Temperature Control
Thermal Element from the Thermal Well Bushing (62) in the Heater Top Head. Be careful not
to damage the Element or its capillary.
3. Disconnect ALL external piping from the Heater Top Head, including that to the Relief Valve(s)
(67) and the Water Solenoid Valve (73). Disconnect the Hot Water outlet piping at the union or
flange located beyond the outside diameter of the Heater Top Head.
4. Disconnect the power supply wiring to the Control Box and all wiring between the Control Box
and any outside Solenoid Valve(s).
5. Disconnect the Pressure Gage pressure line Compression Fitting (60).
6. Disconnect the Compression Fitting (59), located at the bottom of the Shunt Tubing (69) from
the Heater Bottom Head.