| 165 / | HD | HEAT EXCHANGE |
|
| DIG 92 | DD | WITH VALVE OR MOVABLE DEFLECTOR FOR HEAT EXCHANGE FLUID FLOW {6} |
| DIG 109 | DD | .~ With by-pass of heat exchanger or heat exchanger section {2} |
| DIG 110 |  | .~.~ Bypass within or surrounds heat exchanger {4} |
| DIG 111 | DD | .~.~.~> Heat exchanger enclosing a fluid conduit confining second heat exchange fluid {1} |
| DIG 113 | DD | .~.~.~> Bypass centrally located in heat exchanger {3} |
| DIG 118 | DD | .~.~.~> Serpentine heat exchange flow path |
| DIG 119 | DD | .~.~.~> Bypass controlled by pivotal damper |