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Chapter 2: Installation
2.7.2 Condensate Drain Line
A condensate pump is factory-installed. The drain line connection is typically a
⁄
" FPT fitting that is accessed through the top or
1
2
bottom of the cabinet as configured with the chilled water pipes. The installer must connect a drain line (customer supplied) to
the end of the drain fitting to remove water from the cabinet. See the installation drawing provided with your unit for the
location of the condensate drain fitting.
Connect the drain line to the fitting so water can be directed to an appropriate place such as an open building drain with an air
gap per local and national plumbing codes.
2.7.3 Humidifier (Optional)
CRCW-24 systems may be equipped with an electrode steam humidifier. The humidifier empties into its own dedicated
condensate pump during the flush/drain cycle. A water supply must be connected to the humidifier and a drain line must be
connected to the pump.
For top piped cabinets, the supply and drain connections are typically
⁄
" FPT and are accessed at the top of the cabinet.
1
2
For bottom piped cabinets, a
⁄
" OD water supply line must be routed into the bottom of the cabinet through an available
1
4
knockout and connected directly to the
⁄
" compression fitting on the side of the humidifier. Also, route a
⁄
" ID flexible drain
1
3
4
8
tubing through the bottom of the cabinet and connect it to the barbed drain stub located on top of the humidifier drain pump.
NOTE: The humidifier drains (hot) water into the drain pump during normal operation.
Drain water must be directed to an appropriate place such as an open building drain. Include an air gap per local and national
plumbing codes.
The humidifier requires normal tap water as the water supply. If the supply water is high in particulate, an external filter may be
needed.
CAUTION: Do not use demineralized water.
Refer to the humidifier operator's manual, supplied with the equipment, for complete manufacturer's information on the
humidifier and for supply water recommendations.
2.8 Utility Connections
2.8.1 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 2-10). 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, you must use fuses or a HACR-type circuit breaker to protect the system.
Other protection devices are not allowed based upon the product listing.
724-746-5500 | blackbox.com
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Troubleshooting
