Site Preparation and Installation

Figure 11 Refrigerant piping diagram

Evaporator

Suction Line Piping

Condensing Unit

Below Evaporator

Evaporator

Pitch down 1/2" (13mm) per 10 ft. (3m)

NOTE

When installing remote condensing units below the evaporator, the suction gas line should be trapped with an inverted trap to the height of the evaporator . This prevents refrigerant migration to the compressors during off cycles . Maximum recommended vertical level drop to condensing unit is 15 ft. (4.6m) .

Condensing

Unit

Condensing

See Table 10 for recommended maximum

vertical rise above evaporator/maximum

Unit

vertical fall below evaporator.

 

 

Suction Line Piping

Condensing Unit Above Evaporator

Traps recommended at the base of riser exceeding 5 ft (1.5m) and every 20 feet (6m) of vertical rise.

Pitch down 1/2" (13mm) per 10 ft. (3m)

NOTE

If field supplied refrigerant piping is installed, refrigerant must be added to the system.

Table 10 Pipe length and condenser elevation relative to evaporator

 

Maximum

 

 

Nominal System

Equivalent Pipe

Maximum PFH Level

Maximum PFH Level

Size Tons

Length, ft. (m)

Above Evaporator, ft. (m)

Below Evaporator, ft. (m)

5

150 (45)

50 (15)

15 (4.6)

 

 

 

 

Maximum recommended total equivalent pipe length is 150 ft (46m). Suction and liquid lines may require additional specialty items when vertical lines exceed 20 ft. (6m) and/or condensing unit installation is more than 15 ft. (4.6m) below the evaporator. Contact Emerson Application Engineering for assistance.

Refrigerant Charge Requirements—Total refrigerant charge will be required only if units are evacuated during installation or maintenance. For safe and effective operation, refer to 5.4.3 - Piping Connections and Coolant Requirements.

Liebert® Mini-Mate2

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Emerson MINI-MATE2 Pipe length and condenser elevation relative to evaporator, Vertical rise above evaporator/maximum

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

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Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.