| 236 / | HD | AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION |
| * | DD | AIR-RELIEF VALVES {1} |
| * | DD | .~ Radiator type {1} |
| * | | .~.~ Thermostatic {5} |
| 61 | DF | .~.~.~> With pressure control |
| 62 | DF | .~.~.~> With separate float |
| 63 | DF | .~.~.~> Expanding float |
| 64 | DF | .~.~.~> Expanding fluid {1} |
| 66 | DF | .~.~.~> Expanding solid |