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INST 396 Jacuzzi® J-HN Series Heater V12-16 
 
CARBON MONOXIDE IS DEADLY 
EXCESSIVE CARBON MONOXIDE EXPOSURE CAN CAUSE BRAIN DAMAGE OR DEATH 
TH  U.S  CONSUMER  PRODUCT  SAFETY  COMMISION  WARNS  THAT  CARBON  MONOXIDE  IS  AN  INVISIBLE 
KILLER.CARBON MONOXIDE IS A COLORLESS AND ODORLESS GAS. 
 
Exhaust from this pool heater may contain toxic levels of carbon monoxide, a dangerous and poisonous gas you cannot see or smell. 
Symptoms of carbon monoxide exposure or poisoning include dizziness, headache, nausea, weakness, sleepiness, involuntary muscle 
twitching, vomiting, and clouded thinking. 
If you experience any of the above symptoms, immediately turn off the heater, leave the area of the heater and get fresh air 
immediately. The heater is unsafe to continue in operation and will require a thorough inspection of ti and its venting system by a 
qualified gas appliance servicing professional, before being returned to service.   
Never use the heater in an indoor installation without the factory specified proper venting system and lisited vent components. 
Do not use this heater inside the home or in enclosed areas such as garages, covered patios, cabanas or similar structures, unless a 
proper vent system meeting both the factory recommendations and the recommendations of the National Fuel Gas Code or CGA-
B149.1 or .2 is properly installed. 
If used outdoors, install away from open windows, doors, vents. Other openings, and away from air handling equipment ( air 
conditioners etc) using recommended clearances noted in venting requirements section of this manual. 
Newly commissioned vent systems should be tested for proper vent performance by a qualified gas appliance service professional. 
And the heater should be tested each heating season for proper operation including inspection of all venting system. The use of a 
portable Carbon Monoxide (combustion) analyzer to test for optimum system operation is STRONGLY RECOMMENDED. 
IT IS STRONGLY RECOMMENDED THAT BATTERT OPERATED, LISITED CARBON MONOXIDE DETECTORS(ALARMS) BE 
INSTALLED IN ANY OCCUPIED SPACES ADJACENT TO INSTALLED HEATER, AND FOR INDOOR HEATER 
INSTALLATIONS INSTALL AN ADDITIONAL CARBON MONOXIDE DETECTOR(ALARM) NEAR THE LOCATION OF THE 
HEATER