4
National Fuel Gas Code, ANSI Z223.1.
Standard for
Controls and Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1).
I=B=R Heat Loss Calculation Guide
NOTICE
THIS PRODUCT MUST BE INSTALLED BY A LICENSED PLUMBER OR GAS FITTER
WHEN INSTALLED WITHIN THE COMMONWEALTH OF MASSACHUSETTS. SEE
APPENDIX A FOR ADDITIONAL IMPORTANT INFORMATION ABOUT INSTALLING
THIS PRODUCT WITHIN THE COMMONWEALTH OF MASSACHUSETTS.