Benchmark 6000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
OMM-0086_0D AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 67 of 210
GF-133 Ph.: 800-526-0288 03/20/14
Figure 4-4: TAC Valve Adjust (Idle Screw)
4.5 REASSEMBLY AFTER COMBUSTION CALIBRATION
Once the combustion calibration adjustments are properly set, the unit can be reassembled for
service operation.
Reassembly
1. Set the ON/OFF switch in the OFF position.
2. Disconnect AC power from the unit.
3. Shut off the gas supply to the unit.
4. Remove the manometer and barbed fittings and reinstall the NPT plug using a suitable
pipe thread compound.
5. Remove the combustion analyzer probe from the 1/4” vent hole in the exhaust manifold.
Replace the 1/8” NPT plug in the manifold.
6. Replace all previously removed sheet metal enclosures on the unit.
TAC VALVE
IDLE SCREW
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