
Part no.:
Delta model no.: HEH080AB
Page 10
1-4. Thermal and Airflow
Airflow circulation is shown in below diagram. An internal temperature sensor has been
placed in the return air for safe operation.
Cool air flows into the heater, and warmed up by PTC heating element inside of case,
then supplied to the system.
* Minimum gap for both of cool air inlet and warm air exhaust is required to avoid short circulation
Temperature rise
Temperature rise vs. distance above heater