AERCO Boiler Valve Controller (BVC) - Manual (Page 30)

Boiler Valve Controller (BVC) GF-126
User Manual OMM-0051_0D
Page 30 of 38 VD2: 01/20/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
5.3 THE TOUCH SCREEN NAVIGATION LOGIC SEQUENCE
The AERCO Boiler Valve Controller is operated by making use of the front panel touch screen.
See Figure 1. As previously mentioned, It should be noted that the five buttons labeled F1
through F5 appearing below the touch screen are for future use only and are not currently
operational. The touch screen’s logical sequence for valve control is illustrated in Figure 12. A
description of the operational sequence follows for a 4 boiler system. It is illustrated in Figures
13 and 14. A 12 boiler system utilizes a similar operational sequence.
When the AERCO Boiler Valve Controller is operating, users will find themselves initially on the
Main Screen as illustrated in Figure 13, screen 1.
From the Main screen the user will be able to press either of two touch screen buttons (“TIMER”
or “VALVES”) as well as see indications as to which boilers (if any) are firing and which valves
(if any) are open. The TIMER component of the BVC will be discussed subsequently in Section
5.5. Assume that the user presses the “VALVES” touch screen button. This action takes the
user to the Valves screen, Figure 13, screen 2.
From the Valves screen the user may press either the “Valves 1-2” touch screen button, the
“Valves 3-4” touch screen button, as well as a “BACK” touch screen button. The latter brings the
user back to the Main screen while the “Valves 1-2” and “Valves 3-4” touch screen button bring
the user to screens that involve the valves associated with their respective touch screen button
labels. Let us now assume that the user presses the “Valves 1-2” touch screen button.
Assume that the user now navigates to the “Valves 1-2” screen. This screen contains two area
boxes, one for Valve 1 and one for Valve 2, as well as a “BACK” touch screen button. Pressing
the latter brings the user back to the Valves screen. Each area box contains a pair of touch
screen option buttons, labeled “OPEN” and “CLOSED”. Pressing the touch screen button
currently not chosen will select the other value for the valve open/closed state. For instance, if
Valve 1 is currently “OPEN” pressing the “CLOSE” touch screen button for that particular valve
will close the valve ( NOTE: If a boiler is firing, the corresponding valve cannot be moved to the
“CLOSED” position.); if Valve 1 is currently “CLOSED” pressing the “OPEN” touch screen button
for that particular valve will open the valve