Utica Boilers MGB Series II/MGC Series インストール手順

21

BURNERS

ORIFICES

GAS VALVE

• Make visual inspection of main burner and pilot flames 

at start of heating season and again in mid-season. Main 

burner flame should have well defined inner blue mantel 

with lighter blue outer mantel. Check burner throats and 

burner orifices for lint or dust obstruction. Figures 18 

and 19.

• Pilot flame should envelop ⅜ to ½ inch of tip of ignition/

sensing electrode.  See Figure 20.

• To adjust pilot flame, remove pilot adjustment cover 

screw and turn inner adjustment screw counterclockwise 

 to increase or clockwise 

 to decrease pilot 

flame. Be sure to replace cover screw after adjustment to 

prevent possible gas leakage. See Figure 16, Page 19.

• Check burners and pilot for signs of corrosion, rust or 

scale buildup. 

• Area around boiler must be kept clear and free of 

combustible materials, gasoline and other flammable 

vapors and liquids.

• Free flow of combustion and ventilating air to boiler and 

boiler room must not be restricted or blocked.

• Inspect field sourced low water cutoffs annually, or 

as recommended by low water cutoff manufacturer.  

Flush float type low water cutoffs per manufacturer's 

instructions.

• Employ a qualified service agency to make annual 

inspection of boiler and heating system. They are 

experienced in making the inspections outlined above, 

and, in event repairs or corrections are necessary, 

trained technicians make the proper changes for safe 

operation of the boiler.