GF-135
Esteem 399 Low NOx Boiler
Chapter 12
OMM-0089_0A
Installation, Operation & Maintenance Manual
Start-Up Procedures
MC1 06/04/13 AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526-0288
Page 93 of 158
12.3.1 Troubleshooting Start-Up Problems
If the Esteem boiler does not start correctly, follow the procedures below to troubleshoot the
problem.
Troubleshooting Start-Up Problems
1. Check for loose electrical connections, blown fuses, (on control module and in terminals) or
an open service switch.
2. Verify CH and DHW operation is enabled. A radiator or faucet icon with an X through it
indicates that function is disabled.
3. Check continuity across the LWCO device for a closed circuit. See item 6 in Figure A-2 in
Appendix A.
4. Is an external limit control (if applicable) open? Ensure the external limit is reset to the
closed position.
5. Are the gas supply valves open at the unit and meter?
6. Is incoming gas supply pressure at the unit more than 5”W.C. and less than 13” W.C. for
natural or propane with all gas appliances ON or OFF.
7. Are the heating thermostats set above room temperature?
If none of these conditions correct the problem, refer to the Esteem boiler Trouble-Shooting
Guide or contact AERCO Technical Services.
12.4 INSPECTION OF THE ESTEEM BOILER AND SYSTEM
12.4.1 Boiler Piping inspection
Inspect the Boiler system piping and components for leaks. If found, shut down the unit and
repair immediately.
Purge any remaining air from the system piping. Air in the system piping will interfere with
circulation creating heat distribution problems and system noise.
12.4.2 Vent Piping and Combustion Air Piping inspection
Inspect for gas-tight seals at every connection and seam of the venting and combustion air
piping.
WARNING!
Venting system must be sealed gas-tight to prevent flue gas
spillage and potential carbon monoxide emissions, which will result
in severe personal injury or death.
