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The gas supply to the infra-red heater must be connected and tested in accordance with national, state, provincial and local codes along with the guidelines in this manual. Refer to the latest edition of the ANSI Z223.1 (NFPA 54) Standard. Important! Before connecting the gas supply to the infra-red heater(s): • Check for conditions such as drafts or other variables which might cause excessive movement of the unit and cause damage to the gas connection. Ensure that the unit is securely mounted a