Category Archives for Service Procedures
AIRFLOW MEASUREMENT IN A FAN COIL WITH ELECTRIC HEAT
Purpose – This procedure describes how to calculate the quantity of airflow in cubic feet per minute (CFM) being delivered by a fan coil containing electric heating elements. Having the correct quantity of airflow is important in order to maintain … Continue reading
COOLING SYSTEM PROPER AIRFLOW RANGE
Purpose — This procedure describes how to determine if airflow across the evaporator in a cooling system is adequate. For proper operation of a cooling system, the blower should be moving from 400 to 450 CFM of air across the … Continue reading
TEMPERATURE RISE MEASUREMENT IN A FOSSIL-FUEL FURNACE
Purpose – This procedure describes how to measure the temperature rise in fossil-fuel furnaces. Temperature rise is the difference between the return air temperature entering the furnace, and the supply air temperature leaving the furnace. The amount of temperature rise … Continue reading