AERCO Innovation (G-10-1350 to G-11-0563) - Manual (Page 38)

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Innovation Series Water Heaters Chapter 3
OMM-0079_0B USER MANUAL Operation
Page 38 of 200 AERCO International, Inc. · 100 Oritani Dr. · Blauvelt, NY 10913 · Ph.: 800-526-0288
07/21/11
Figure 3-6. Air/Fuel Valve In Ignition Position
6. Up to 7 seconds will be allowed for ignition to be detected. The igniter relay will be turned off one
second after flame is detected.
7. After 2 seconds of continuous flame, Flame Proven will be displayed and the flame strength will be
indicated. After 5 seconds, the current date and time will be displayed in place of the flame strength.
8. With the unit firing properly, it will be controlled by the temperature controller circuitry. The heater’s
VALVE POSITION will be continuously displayed on the front panel bargraph.
Once the demand for hot water has been satisfied, the Control Box will turn off the SSOV gas valve. The
blower relay will be deactivated and the Air/Fuel Valve will be closed. Standby will be displayed.
3.9 START/STOP LEVELS
The start and stop levels are the Air/Fuel Valve positions (% open) that start and stop the unit, based on
load. These levels are Factory preset as follows:
Start Level: 20%
Stop Level: 16%
Normally, these settings should not require adjustment.
Note that the energy input of the heater is not linearly related to the Air/Fuel Valve position. Refer to Table
3-6 for the relationship between the energy input and Air/Fuel Valve position for a unit running on natural
gas.