Natural Gas Combustion Calibration - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual

4.3 NATURAL GAS COMBUSTION CALIBRATION

Innovation Hot Water Boilers are combustion calibrated at the factory prior to shipping. However,
recalibration is necessary as part of initial start-up due to changes in the local altitude, gas BTU
(kW) content, gas supply piping and supply regulators. Start-Up & Registration 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 calibration procedure as outlined below. This will keep
readjustments to a minimum and provide optimum performance.
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.
5. Enter the password 6817 to continue.
6. 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.
Adjust the air/fuel valve position to 0% by pressing the ▼ arrow key.
7.
8. Ensure that the leak detection ball valve downstream of the SSOV is open.
9. Set the ON/OFF switch to the ON position.
Change the valve position to 28% using the ▲ arrow key. The unit should begin its start
10.
sequence and fire.
Using the ▲ arrow key, increase the valve open position to 100% and then allow the valve
11.
position to reach 100%.
12. With the valve position at 100%, insert the combustion analyzer probe into the 1/8" (3.18
mm) port at the rear of the exhaust manifold. Allow enough time for the combustion
analyzer to settle.
OMM-0120_0A
GF-128-I
CHAPTER 4 – INITIAL START-UP
NATURAL GAS Combustion Calibration
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
Page 53 of 174
11/15/2016