1ST MAINT. CHECK-UP UNDER SERVICE AGREEMENT FOR 2 YEAR HT UNIT. CHECK THERMOSTAT, AIR FILTER, AIRFLOW, HEAT EXCHANGER, FAN CONTROL, HIGH LIMIT CONTROL, ENERGY CONSUMPTION, AND ALL ELECTRICAL CONNECTIONS. CLEAN AND CHECK BURNERS AND BUNER OPERATION. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS. EVERYTHING IS RUNNING GREAT.