AERCO Packaged WaterWizard Steam-to-Water Heater - Manual (Page 19)

1B+ II Water Wizard Water Heaters
HE-110
Installation, Operation & Maintenance Manual OMM-0063_0C
MC2: 07/26/13 Page 19 of 50 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
CHAPTER 5. OPERATING PROCEDURES
Water Wizard Operating Procedure Instructions
1) With the installation entirely completed, including:
1) All piping connections have been made,
2) All connecting piping has been cleaned (blown) out,
3) All connections per Steps 8 and 9 under INSTALLATION have been made,
Open the stop valve in the Cold Water inlet line and hold the relief valve (or any one of the
relief valves) in the Heater top head open to allow air to come out (otherwise an air pocket
will be built up and the Heater will not fill). When water flows out of the relief valve, the
Heater is full.
2) Temporarily set the Over-Temperature Limit System Temperature Switch in the Control Box
(Figure 20, Item 126) to its high temperature limit.
3) If the Steam Control Valve furnished is air operated and there is a Temperature Controller in
the Control Box (see Figure 8), set the Controller at the temperature desired to be held at
the Heater Hot Water outlet.
4) Open the stop valve in the Hot Water outlet line. Open a Hot Water faucet or faucets in the
building or process to insure a flow of water through the heater. For best results in adjusting
the temperature control, a water flow of 10% to 25% of heater rating is desirable. Slowly
open all stop valves in the Steam inlet and condensate outlet lines.
5) Slowly open all stop valves in the Steam inlet and Condensate outlet lines.
6) Follow the instructions furnished with the air-operated Temperature Controller and Control
Valve or with self-contained Temperature Regulator Valve, and:
a) Introduce Steam to the Heater.
b) Adjust the air-operated Temperature Controller OR self-contained Temperature
Regulator Valve until the Heater hot water outlet temperature is being held steady at
the desired temperature. If the hot water outlet temperature is erratic, see Step 7
below.
c) Close the hot water faucet or faucets opened in Step 4.
7) Open any stop valves in the building recirculation system if such is included in the Heater
installation.
8) If the hot water outlet temperature is erratic especially during load changes:
a) Put a load on the Heater, by opening a hot water faucet or faucets in the building or
process, as quickly as possible.
b) Adjust the Temperature Controller of Temperature Regulator to provide best
response on load changes. See the instruction furnished with the Controller or
Regulator.
9) Adjust the Over-Temperature Limit System Temperature Switch in the Control Box to its
proper setting in accordance with the instructions furnished which cover the Over-
Temperature Limit System – usually 15°F to 20°F higher than the desired hot water outlet
temperature.
(Continued)