165 / | HD | HEAT EXCHANGE |
200 | DF | WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14} |
201 | DF | .~ Having heating and cooling capability {13} |
253 | DF | .~.~ Temperature sensor controlling temperature {4} |
263 | .~.~.~ Area receives conditioning from simultaneously operated heating and cooling means (e.g., opposed and compensating heating and cooling, etc.) {1} | |
264 | DF | .~.~.~.~> Simultaneous heating and cooling only in limited range around set point temperature |