| 摘要 |
The arrangement is for regulating the temp. in commercial vehicle cabs for operation while or parked. An interior temp. adjuster controls the temp. relative to a predetermined temp. graph in relation to the vehicle external temp. to regulate a heater and cooler unit. The theoretical temp. graph is trough-shaped with a negative incline in the lower exterior temp. range below 10 deg.C and a positive incline at temps. over 20 deg.C. The lower range is controlled by a heater and the upper range by a cooler.
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