AERCO Modulex General Manual - Manual (Page 43)

INSTALLATION, OPERATION & MAINTENANCE
6-9
6.6 UNIT REASSEMBLY
Once the combustion calibration procedures have been completed for each Boiler stage, the unit can
be reassembled for service operation.
1. Set the ON/OFF switch on the front of the Modulex Boiler to the OFF position.
2. Turn off the gas supply to the boiler by closing the external shut-off valve.
3. Disconnect AC power.
4. Remove the manometer from the gas valve outlet pressure tap. Close the tap by rotating the
screw fully clockwise to its stop.
5. Cover the hole drilled in the PVC flue pipe with foil tape.
6. Replace the top and front panels on the Modulex Boiler.