A typical rooftop unit is a manufactured piece of equipment that is factory-assembled, delivered to the site inane piece and ready to operate with a single-point control interface. Inmost cases, the equipment connects to utilities such as natural gas and electric power. In some configurations, the units can be connected to hot water or steam for heating and chilled water for cooling. In most cases, each unit is factory-tested to ensure quality control. Regardless, it is essential during rooftop startup procedures for a responsible contractor to:
• Check operation of heating and cooling.
• Adjust the air/fuel mixture for your altitude.
• Adjust belts.
• Tighten bolts, particularly in the blower section.
• Remove shipping braces.
• Check for refrigerant leaks.
Source: The Comfort Clinic newsletter
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