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724-746-5500 | blackbox.com
Chapter 2: Installation
Wrap wet rags around the pipes between the areas to be soldered and any nearby refrigeration components to keep excessive
heat from traveling through the pipe and causing damage. Clear all pipe connections of debris and prep connections for
soldering. Use only “L” or “K” grade refrigerant copper piping. Be careful not to allow solder/piping debris to get inside
refrigerant lines. Dry nitrogen should be flowing through the tubing while soldering at a rate of not less than
1.2 CFM (0.028–0.057 m
3
/minute).
Table 2-4. Pipe connection sizes.
Model # Liquid Line Discharge Line Condensate Drain
CRDX-W-FS-12W,
CRDX-W-FS-24W
5
⁄8"
5
⁄8"
1
⁄2
"
CRDX-G-FS-12W,
CRDX-G-FS-24W
5
⁄8"
5
⁄8"
1
⁄2
"
2.8.1.1 DX Refrigerant Piping Connections
SUCTION LINE
LIQUID LINE
TOP-ACCESS PIPING
BOTTOM-ACCESS PIPING
CONDENSATE DRAIN—
1
⁄2" FPT
SUCTION LINE
LIQUID LINE
Figure 2-11. DX refrigerant piping connections.