76 Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020
Chapter 2 Drive Installation
Pipe Materials and Layout
All material that contacts fluid between the heat exchanger and drive must be
either Schedule 80 CPVC or stainless steel. Rockwell Automation recommends
using stainless steels AISI 304L or 316L to connect the drives to heat exchangers.
Use 304L and 316L welding wire to avoid sensitization of the welded material.
Sensitization due to incorrect welding causes localized corrosion of the welded
area. Pressures expected within a drive are below 75 psi with test pressures of
110 psi.
Schedule 80 CPVC piping may be installed within a climate controlled building
with any outside pipe of stainless steel. Shield CPVC from direct sunlight to
prevent UV damage. Use expansion loops for long pipe runs.
See document CTS-3 "CPVC CTS Products Design and Installation Manual"
from Spears Manufacturing Company (www.spearsmfg.com
) for more
information.
Figure 60 - Plan View of Piping to Heat Exchanger (Piping may vary with exchanger)
Ensure exit flow from the pump cabinet is routed to the inlet flange of the
exchanger.
The estimated flow rate and pressure is printed on the cooling system schematic,
which is posted on the inside of the pumping cabinet door.
The pipes to which connections are made are Schedule 80 CPVC: 38 mm
(1.50 in.) or 50 mm (2.00 in.).
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