165 / | HD | HEAT EXCHANGE |
200 | DF | WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14} |
201 | DF | .~ Having heating and cooling capability {13} |
202 | .~.~ Vehicle installation {2} | |
203 | DF | .~.~.~> Plural temperature regulators for plural zones |
204 | DF | .~.~.~> Flow control of chest, foot, or defrost air in vehicle |