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IMPORTANT SAFETY INFORMATION
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each appliance connected to the venting system
being placed into operation could result in carbon monoxide poisoning or death. The following steps
shall be followed for each appliance connected to the venting system being placed into operation,
while all other appliances connected to the venting system are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal pitch, as required in the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code,
CSA B149.1 and these instructions. Determine that there is no blockage or restriction,
leakage, corrosion and other deficiencies which could cause an unsafe condition.
3. As far as practical, close all building doors and windows and all doors between the space in
which the appliance(s) connected to the venting system are located and other spaces of the
building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any
exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum
speed. Do not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust
the thermostat so appliance is operating continuously.
7. Test for spillage from draft hood equipped appliances at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a match or candle.
8. If improper venting is observed during any of the above tests, the venting system must be
corrected in accordance with National Fuel Gas Code, ANSI Z223.1/NFPA and/or Natural
Gas and Propane Installation Code, CSA B149.1.
9. After it has been determined that each appliance connected to the venting system properly
vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers
and any other gas-fired burning appliance to their previous conditions of use.