AERCO Innovation (G-14-2265 and above) - Manual (Page 61)

Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
OMM-0078_0L
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Page 61 of
206
GF-128
Phone: 800-526-0288
PRI: 11/25/2014
PROPANE Combustion Calibration - Continued
14. If the oxygen level is not within the required tolerance, the gas pressure on the downstream
side of the SSOV must be adjusted using the adjustment screw on the SSOV regulator
(Figure 4-4). Slowly rotate the gas pressure adjustment (approximately 1/4-turn
increments). Allow the combustion analyzer to stabilize following each adjustment.
Clockwise rotation reduces the oxygen level, while counterclockwise rotation increases the
oxygen level.
15. Once the oxygen level is within the required range listed in step 13, the gas pressure on the
downstream side of the SSOV should be within the appropriate range shown below for the
Innovation Model being tested.
PROPANE Gas Pressure Range Downstream Of SSOV
Model Gas Pressure Range
Innovation 1350 2.0” – 2.2” W.C.
Innovation 1060 1.8” – 2.0” W.C.
Innovation 800 2.8” – 3.0” W.C.
Innovation 600 1.6” – 1.8” W.C.
16. Replace the brass cap on the SSOV gas pressure adjustment if it was previously removed.
17. Following combustion calibration at the 16% valve position, check the combustion readings
at each of the valve positions listed below and record the readings on the Start-Up &
Registration data sheets provided with the unit. During these checks, DO NOT attempt to
adjust the downstream gas pressure using the SSOV gas pressure adjustment screw.
NOTE
Based on the water heater load, it may not be possible to obtain data at all of
the points listed without encountering an Over-Temp condition.
18. Valve Positions to be checked:
• 20%,
• 30%,
• 40%,
• 50%, • 60%,
• 80%,
• 100%
This completes the PROPANE combustion calibration procedure.
4.5 REASSEMBLY
Once the combustion calibration adjustments are properly set, the unit can be reassembled for
service operation.