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Benchmark 1.5ln dual-fuel low nox boiler, Gf-121 – AERCO BMK 1.5 LN Dual Fuel Feb 2013 User Manual

Page 157

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APPENDIX K: BMK 1.5 DUAL-FUEL SWITCHOVER INSTRUCTIONS

PR2: 05/09/12 Page

157 of 162

Benchmark 1.5LN Dual-Fuel Low NOx Boiler

Operation and Maintenance Manual

OMM-0041_0C

GF-121

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288

PROPANE

INLET

NATURAL

GAS INLET

PROPANE

SSOV

NATURAL

GAS SSOV

TO AIR/FUEL

VALVE

MANUAL

SHUT-OFF

VALVE

RSI

REGULATOR

1/4" BALL VALVE

CLOSE FOR PROPANE

OPERATION

OPEN FOR NAT. GAS

OPERATION

FLEX GAS LINE TO

2

ND

SOLENOID

VALVE

RSI SOLENOID

VALVE

Figure K-2: Ball Valve Positions for Propane & Natural Gas Operation