12
ASSEMBLY INSTRUCTIONS
13. Connect natural gas.
You must provide natural gas.
Use this heater only with a natural gas vapor withdrawal supply system.
A minimum supply pressure of 7 W.C. in is required for the purpose of input adjustment for natural
gas.ANSIZ223.1/NFPA54, Natural Gas and Propane Installation Code, CSA B149.1, or Propane
Storage and Handling Code, B149.2.
The installation must conform with local codes, or in the absence of local codes, with National Fuel
Gas Code, ANSI Z223.1/NFPA54, Natural Gas and Propane Installation Code, CSA B149.1, or
Propane Storage and Handling Code, B149.2.
