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5
AG 31-011 • REFRIGERANT PIPING DESIGN
Refrigerant Piping Design Check List
The first step in refrigerant piping design is to gather product
and jobsite information. A checklist for each is provided below.
How this information is used will be explained throughout the
rest of this guide.
Product Information
•
Model number of unit components (condensing section,
evaporator, etc.)
• Maximum capacity per refrigeration circuit
• Minimum capacity per refrigeration circuit
• Unit operating charge
• Unit pump down capacity
• Refrigerant type
• Unit options (Hot Gas Bypass, etc.)
• Does equipment include isolation valves and charging ports
• Does the unit have pump down?
Jobsite Information
•
Sketch of how piping will be run, including:
—
Distances
—
Elevation changes
—
Equipment layout
—
Fittings
—
Specific details for evaporator piping connections
•
Ambient conditions where piping will be run
•
Ambient operating range (will the system operate during
the winter?)
• Type of cooling load (comfort or process)
•
Unit isolation (spring isolators, rubber-in-shear, etc.)
Tip:
Use this list to gather the information required to design your refrigerant piping system