Which parts of the evaporator are covered under PED?

For a PED-certified cold room evaporator, the Pressure Equipment Directive (PED) applies only to the components that contain or are exposed to pressurized refrigerant. Specifically:

Parts Covered Under PED:

1. Evaporator Coils / Tubing

• All refrigerant-carrying tubes, headers, and manifolds.

• Includes bends, fins, and connections that are pressurized during operation.

2. Pressure Vessels (if any)

• Any integrated expansion chambers or receiver sections designed to hold refrigerant under pressure.

3. End Caps, Headers, and Manifolds

• Parts forming the closed circuit under pressure.

4. Connections and Fittings

• Brazed, welded, or mechanical joints that contain pressurized refrigerant.

• Includes service valves or inlet/outlet ports that operate under system pressure.

Parts Typically NOT Covered by PED:

• Evaporator frame or casing (if not pressurized)

• Fan motors, fan guards, and drain pans

• Electrical components (thermostats, controllers, sensors)

• External insulation