Lennox eNeRGy Series Installation, Operating And Maintenance page 49

GAS BURNER
Preliminary checks before start-up
GAS BURNER
Note:
Any work on the gas system must be carried out by qualified personnel.
This unit must be installed in accordance with local safety codes and regulations and can only be used in planed installation conditions
for outdoor.
Please read carefully the manufacturer's instructions before starting a unit.
Before commissioning a unit with gas burner, it is mandatory to ensure that the gas distribution system (type of gas, available
pressure...) is compatible with the adjustment and settings of the unit.
The gas module safety chain must be checked by a professional before start-up of the product.
Check access and clearance around the unit
• Make sure someone can move freely around the unit;
• A minimum one-meter clearance must be left in front of the burnt gas exhaust flue;
• Combustion air inlet and burnt gas exhaust(s) must not be obstructed in any way;
• The installation of the gas pipes should permit to open all panels of the units.
Supply network pipe sizing
Male threaded connection for gas burner: 3/4" or 1"1/2 depending on gas burner size (refer to unit drawing)
Check that the gas supply line can provide the burners with the pressure and the gas flow rate necessary to provide the heating
nominal output.
WARNING: Do not forget to connect the condensate drain. The condensates must absolutely be drained at
least 5 meters from the unit into an appropriate place/evacuation. The condensates are corrosive and could
damage the unit (or other parts of the installation) if they are not drained properly.
Safety instructions
FUEL:
Before starting up the heater, make sure that:
• The gas mains supply data is compatible with the data stated on the nameplate;
• The combustion air intake ducts (when fitted) and the fume exhaust pipes are those specified by the manufacturer;
• The combustion air is supplied in such a way to avoid even partial obstructions of the intake grille (caused by leaves etc.);
• The fuel intake internal and external seal is checked during the testing stage, as required by applicable standards;
• The heater is supplied with the same type of fuel it has been designed for;
• The system is correctly sized for such flow rate and is fitted with all safety and monitoring devices required by applicable standards;
• The inside of the gas pipes and air distribution ducts for ducted heaters has been thoroughly cleaned;
• The fuel flow rate is suitable for the power required by the heater;
• The fuel supply pressure is between the range specified on the nameplate.
GAS LEAKS
If you smell gas:
• Do not operate electrical switches, telephones or any other object or device that could produce sparks;
• Immediately open doors and windows to create an air flow to vent the gas out of the room;
• Close the gas valves;
• Call for qualified staff.
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