12 fault relay (13), 13 auxiliary relay contacts (14), 11 flue gas vent installation – AERCO BMK 2.0 LN Natural Gas (SN G-11-1861 and above) User Manual
Page 29: 1 remote interlock in (10), 2 delayed interlock in (12), Gf-123, Benchmark 2.0ln low nox boiler
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