CAME OUT ON A FREE SASC. CHECK THERMOSTAT, AIR FILTER, HUMIDIFIER, ALL ELECTRICAL CONNECTIONS, HEAT EXCHANGER, HIGH LIMIT CONTROL, GAS PRESSURE, BURNERS, BLOWER COMPONENT, LUBRICATE NECESSARY MOVING PARTS. INSTALL 3T 3 P PIG 12YR P&L. MADE SURE SYSTEM WAS INSTALLED PROPERLY AND WORK AREA CLEAN WHEN JOB FINISHED.