Black Box CRDX-G-FS-12KW Condensate Drain Line, Utility Connections 2.9.1 Main Power, Page

Chapter 2: Installation

Vertical runs are based on a total rise of 30 equivalent feet. For longer rises, make individual calculations. Sizes assume the use of single risers; double risers may be necessary.

CAUTION

Do not exceed 150-foot maximum liquid line length.

If the condenser is installed above the evaporator, the discharge line should include a p-trap at the lowest point in the piping. The highest point in the discharge line should be above the condenser coil and should include an inverted trap to help prevent oil and liquid from flooding back to the compressor during off cycles.

If the condenser is installed below the evaporator, an inverted trap the height of the evaporator coil is required on the liquid line to help prevent oil and liquid from flooding back to the compressor during off cycles.

2.8.3 Condensate Drain Line

A condensate pump is factory installed. The drain line connection is typically a 1⁄2” FPT fitting. The installer must connect a drain line (customer supplied) to the drain fitting to remove water from the cabinet.

Access the condensate drain fitting through the top or bottom of the cabinet as configured with the water/glycol or refrigerant piping connections. Access the drain fitting from outside the cabinet on top-piped units. Access the drain fitting inside the cabinet behind the front discharge panel on bottom-piped units. An entrance hole for the drain line is provided in the floor of the fan compartment. See the installation drawing provided with your unit for the location of the condensate drain fitting.

Connect the drain line to the fitting and direct the water to an appropriate place, such as an open building drain with an air gap, per local and national plumbing codes. After the piping is installed, seal the gap between the drain line and the cabinet entrance hole so air won’t leak.

CAUTION

Do not use chloride-based water-conditioning additives in the condensate drain pans. This will cause corrosion on the coil fins.

2.9Utility Connections 2.9.1 Main Power

The Cold Row is available in single- or three-phase variations and a wide range of voltages. Examine the unit nameplate to determine the operating voltage, frequency, and phase of the system (see Figure 2-12). The nameplate also provides the full load amps (FLA), the current the unit will draw under full design load, the minimum circuit ampacity (MCA) for wire sizing, and the maximum fuse or heating, air conditioning, refrigeration (HACR) breaker size (MAX FUSE/CKT BKR) for circuit protection. The unit’s nameplate is located inside the cabinet within the electrical box.

NOTE: If the nameplate states MAX FUSE/CKT BKR, it is required to use fuses or a HACR-type circuit breaker to protect the system. Other protection devices are not allowed based upon the product listing.

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