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Page 26
724-746-5500 | blackbox.com
Chapter 2: Installation
For pipe connection sizes, refer to the following table:
Table 2-2. Pipe connection sizes.
Model #
Water Glycol Inlet/Outlet
Condensate Drain
CRCW-12
1
1
⁄
4
"
1
⁄
2
"
CRCW-24
1
1
⁄
4
"
1
⁄
2
"
NOTE: Use standard refrigeration practices for piping, leak testing, and filling the chilled water circuit.
Use vibration isolating supports to isolate the piping. Provide supports (clamps or hangers) as necessary, every 5 to 10 feet along
piping runs to minimize vibration and noise transmission. To reduce vibration transmission and prevent pipe damage, seal
openings in walls using a soft, flexible material to pack around the piping. After the piping is installed, seal the gaps between the
pipes and the entrance holes so air won’t leak around the pipes.
NOTE: Chilled water lines should be insulated to prevent condensation from forming on the pipes if ambient dew point
temperatures are higher than the fluid temperatures.
CAUTION
After the interconnecting piping is installed, the entire piping circuit must be thoroughly flushed prior to operating the system.
If newly installed CW supply and return piping is used, we recommend cleaning the piping system before connecting it to the
unit. If you use solvents/cleaning solutions, ensure they are completely flushed from the piping before connecting it to the unit.
Failure to do so could result in equipment problems.
2.7.1.1 CW Supply and Return Piping Connections—12" Cabinets
Female pipe
threads
Condensate drain
1
⁄
2
" FPT
Pump
Schrader
valve
Top access piping
Male pipe
threads
Schrader
valve
Bottom access piping
Figure 2-8. Top and bottom access piping for the CRCW-12.