AERCO Innovation (G-14-2265 and above) - Manual (Page 199)

Innovation Water Heaters Installation, Operation & Maintenance Manual
APPENDIX J – COMBUSTION CALIBRATION (KOREA ONLY)
OMM-0078_0L AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 199 of 206
GF-128 Phone: 800-526-0288 PRI: 11/25/2014
APPENDIX J – COMBUSTION CALIBRATION (KOREA ONLY)
The Innovation Heater is combustion calibrated at the factory prior to shipping. However,
recalibration as part of initial start-up is necessary due to changes in the local altitude, gas BTU
content, gas supply piping and supply regulators. Factory Test Data sheets are shipped with
each unit. These sheets must be filled out and returned to AERCO for proper Warranty
Validation.
It is important to perform the following procedure as outlined below. This will keep
readjustments to a minimum and provide optimum performance.
Natural Gas Combustion Calibration
1. Open the water supply and return valves to the unit and ensure that the system pumps
are running.
2. Open the natural gas supply valve(s) to the unit.
3. Set the control panel ON/OFF switch to the OFF position.
4. Turn on external AC power to the unit. The display will show LOSS OF POWER and the
time and date.
5. Set the unit to the Manual Mode by pressing the AUTO/MAN key. A flashing Manual
Valve Position message will be displayed with the present position in %. Also, the
MANUAL LED will light.
6. Adjust the air/fuel valve position to 0%
by pressing the ▼ arrow key.
7. Ensure that the leak detection ball valve downstream of the SSOV is open.
8. Set the ON/OFF switch to the ON position.
9. Change the valve position to 29% using the ▲ arrow key. The unit should begin its start
sequence and fire.
10. Next, verify that the gas pressure downstream of the SSOV is within the appropriate range
shown below for the Innovation Model being tested. If gas pressure adjustment is
required, remove the brass hex nut on the SSOV actuator to access the gas pressure
adjustment screw (Figure J-1). Make gas pressure adjustments using a flat-tip screwdriver
to obtain a gas pressure reading within the required range for the INN model being tested.
INNOVATION
MODEL
GAS PRESSURE RANGE
DOWNSTREAM OF SSOV
INN1350 2.8” – 3.0” W.C.
INN1060 2.4” – 2.6” W.C.
INN800 1.3” – 1.5” W.C.
INN600 0.7” – 0.9” W.C.