1ST MAINT. CHECK-UP UNDER SERVICE AGREEMENT FOR HEATING UNIT. CHECK BURNERS AND BURNER OPERATION. CHECK THERMOSTAT, AIR FILTER, HUMIDIFIER, HEAT EXCHANGER, HIGH LIMIT CONTROL, GAS PRESSURE, AND ALL ELECTRICAL CONNECTIONS. EVERYTHING IS RUNNING GREAT. INSTALLED 3 TON FURN. MADE SURE EQUIPMENT WAS INSTALLED PROPERLY AND WORK AREA WAS CLEAN WHEN FINISH.