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Water Coil Piping
Figure 30
and
Figure 31
illustrate typical water coil piping
configurations.
Water coils are self-venting only if the water velocity
exceeds 1.5 feet per second (fps) in the coil tubes. See the
unit submittals for coil water velocity. If the water velocity
Figure 30. Typical piping for one-row water coil
Figure 31. Typical piping for 2 - 8-row water coils
CLCH-SVX009A-EN
is below these minimums, vent the coil by one of the
following methods:
1. Install an air vent in the top pipe plug tapping of the
return header.
2. When the return line rises above the top of the coil,
vent from the top of the return header horizontally to
the return piping.
AV
AV
GV
GV
Drain
AV
AV
AV
Drain
Coil Piping and Connections
GV
Water supply
main
Water
return main
GV
33
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