Hello Bill, Here is a link to the instruction manual for the Raypak 206,000 BTU NG ELE heater. Please note: These instructions are intended only for the use of qualified personnel, specifically trained and experienced in the installation of this type of heating equipment and related system components. Installation and service personnel may be required by some states to be licensed. If your state is such, be sure your contractor bears the appropriate license. Persons not qualified shall not attempt to fix this equipment nor attempt repairs according to these instructions.
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