P/N 37615101, Rev. D [08/2011]
An ISO 9001-2008 Certified Company
OMGB SERIES
Cast Iron Gas Fired Boilers
For Forced Hot Water
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
MODEL NUMBERS:
OMGB50
OMGB75
OMGB100
OMGB125 OMGB150
OMGB175
OMGB200 OMGB250
OMGB300
ECR International
2201 Dwyer Avenue •
Utica • New York • 13501 • USA
www.ecrinternational.com