Low refrigerant charge indoor (SPI) and outdoor (SPO) distributed systems designed for close proximity to walk-in coolers, freezers, and cases. The SPI and SPO are both available with water-cooled applications where a fluid cooler is available (sold separately). The indoor SPI is available for air-cooled when a Krack air-cooled remote condenser is available (sold separately).

The Protocol SPI is designed to hang overhead close to cases (mounting overhead is 100% custom to each installation and by others) or mounted on top if walk-in coolers and freezers. It weighs only 1,350 pounds with a footprint of 97″ (L) X 31″ (D) X 34″ (H).

The Protocol SPO for outdoor use weighs 1,800 pounds with a footprint of 106″ (L) X 53″ (D) X 37″ (H).

PROTOCOL SPI and SPO FEATURES and BENEFITS:

- One 3WH electrical panel (same used as 6 compressor Protocol HE; Busbars: 2-208V)

- Compact liquid line with optimized piping reduces refrigerant required

- Designed for serviceability

- Optional split suction

- Optional built-in liquid drier, suction filter, and economizer

- Optional sound attenuation package (SPI only)

- Available in 2 or 3 Emerson scroll compressor configurations:

•  ZB*KCE for 2 to 7.5 HP
•  ZF*KVE for 4 to 9 HP
• With digital available

- Broad selection of controls:

• CPC
• Micro Thermo
• Novar
• Danfoss Value Control (AKPC551)

- Most voltages available including:

• 208V, 380V, 460V, and 575V in 3-phase, 60 Hertz
• 120 control voltage
• GWP refrigerants under 2,220 available including: R-407A, R-407F, R-448A, and R-449A **