AERCO Innovation (G-14-2265 and above) - Manual (Page 52)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 3 – OPERATION
Page 52 of
206 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0078_0L
PRI: 11/25/2014
Phone: 800-526-0288
GF-128
Start Sequence – Continued
6. Up to 7 seconds will be allowed for ignition to be detected. The igniter-injector 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 bar-graph.
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.
3.10 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: 25%
Stop Level: 16%
Normally, these settings should not require adjustment.
Note that the energy input is not linearly related to the Air/Fuel Valve position. Refer to Table 3-
7 for the relationship between the energy input and Air/Fuel Valve position for a unit running on
natural gas.
Table 3-7. Relationship Between Air/Fuel Valve Position and Energy Input
For Units Running Natural Gas
Air/Fuel Valve
Position (% Open)
Innovation Water Heater Model: Energy Input (BTU/Hr.)
INN600 INN800 INN1060 INN1350
16% 45,000 45,000 45,000 45,000
20% 87,000 97,000 97,000 181,000
30% 174,000 192,000 222,000 370,000
40% 243,000 330,000 416,000 665,000
50% 306,000 424,000 520,000 870,000
60% 370,000 486,000 715,000 1,001,000
80% 483,000 615,000 845,000 1,203,000
100% 600,000 800,000 1,060,000 1,350,000