Refrigerant Coils

Air conditioning and refrigeration coils are important components of direct vapour compression systems that use refrigerant to cool or heat air. DX or evaporator coils are used for cooling and dehumidifying air, while condenser or condensing coils are used for heating air. Copper tube coils can be used with all refrigerants except ammonia, and can be split into sections to serve a single DX coil with multiple heat pumps. SPC offers design and supply of DX coils for use in reverse cycle applications as air coolers or air heaters.

Refrigerant coils terminate in plain copper tails sized to suit the capacity and number of circuits.

Standard Casing

The 45mm flanged casings suit general ductwork applications. The flanges are supplied pre-drilled to aid installation. For ‘standard’ cased cooling coils, the drain pan covers the fin block only.

Enclosed Casing

The 50mm flanged casing suits ductwork applications. They are complete with cover boxes over the headers and return bends to minimise air leakage. Welded and sealed cover boxes can be provided to further reduce air leakage. Drain pans on cooling coils extend under the headers and bends.

Unitary Casing

Unitary casing suits insertion into AHU or similar. It is complete with a baffle plate which is required to prevent air bypass to one or both faces. For cooling coils, the drain pan extends under the headers and bends. Alternatively, a perforated base is provided to allow drainage into a pan in the base of the AHU.