Aerco BENCHMARK 6000 - Page 86

Benchmark 6000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 6 – SAFETY DEVICE TESTING
Page 86 of 210 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0086_0D
03/20/14 Ph.: 800-526-0288 GF-133
Blocked Inlet Switch Test – Continued
6. Cover the combustion air inlet opening with a solid, flat object, such as a piece of thick
plywood or a thick metal plate.
7. The unit should shut down and display AIRFLOW FAULT DURING RUN. This step
confirms proper operation of the Blocked Inlet Switch.
8. Remove the cover from the air inlet opening and reinstall the Combustion Air Duct or Y-
Duct and air filters.
9. Remove the jumper wires installed in step 2 and replace the black connector boot on the
Flame Detector.
10. Press the CLEAR button. The unit should restart.
Figure 6-5: Boiler Top View Showing Air Inlet Location
EXHAUST
MANIFOLD
HOT WATER
OUTLET
FRONT
REAR
AIR INLET
(Combustion Air
Duct removed)