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Piping Guidelines
When piping the unit, route the water pipes down or to the side so that there is a clear
landing area in front of the unit for accessing the control panel and access hatch(es) in
compliance with NEC regulations.
Water Connection
Water Piping
TrilliumSeries™ Adiabatic Products require a water supply between 25 and 60 psi in a
¾” pipe for the TSDC and in a 1” pipe for the TSDC2 and TSDF2 at the unit’s inlet. If
your building’s pressure is too high, it is recommended to use a pressure reducing valve.
If multiple TrilliumSeries™ Adiabatic Products are being installed, use Table 3 to
determine the proper size of the water line that should be run to the units. This is critical
for proper operation of the unit. Failure to meet these requirements will result in poor
performance, lower capacity, and possible damage to the pump.
Number of
Units
Nominal Pipe Size of Main
Water Line (Inches)
TSDC TSDx2
1 3/4 1
2 1 1/4 1 1/2
3 1 1/2 2
4 1 1/2 2
5 2 2 1/2
6 2 2 1/2
Table 3. Nominal Pipe Size of Main Water Line
Clear
Working
Area
Figure 14. Clear Working Area
Installation
Refrigerant Connection
Refrigerant Piping for Multiple
Units
Piping Guidelines
Water Connection
Water Piping
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