Pentair MASTERTEMP 125 Installation And User Manual page 22

Section 3. Installation Instructions
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Fire Hazard. Do not vent the heater directly into a masonry chimney. Installation into a masonry chimney must use a chimney
liner and must meet the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation
Codes requirements and all local code requirements.
Risk of fire, carbon monoxide poisoning, or asphyxiation. It is recommended to use a CO Monitor and Fire Alarm in rooms
that contain gas fired appliances.
MASTERTEMP ® 125 Pool and Spa Heater Installation and User's Guide
WARNING
WARNING
Rev. B 8/14