DTI 9021

Cooling unit 320 W
  • robust: steel cover, easily paintable
  • compact design, ideal for flat control cabinets, control consoles and operating units
  • diagnostic message via operating display
  • integrated fault and door contact
  • optionally available with integrated condensate evaporation system

partially recessed mounting

protection system

tool-less mounting

cut-out compatible

Technical data

DataDTI 9021
Rated voltage ±10 %AC 50/60 HzAC 60 Hz
230 V115 V
Cooling performance
according to EN 14511
A35/A35320 / 340 W320 W
A35/A45300 / 330 W250 W
Ambient temperature+15 … +45 °C / +59 … +113 °F
Degrees of protection
according to EN 60529
IP 54towards the electrical enclosure
if used as intended by the manufacturer

Further technical details and dimensions can be found in the download section on this page under product sheet.


Description Type Size
Conformity DTx 9xx1 pdf 55 KB Download
Conformity_UKCA_085507005_Rev01_Mar24_DTI_DTS9xx1.pdf pdf 37 KB Download
Manual DTFI/DTI 9021 pdf 1.7 MB Download
Supplem. DTI/DTFI 9021 230V pdf 380 KB Download
Suppl. DTI/DTFI 9021 115V 60Hz pdf 430 KB Download
Description Language Type Size Download

Product sheet

  • English
pdf 550 KB Download

3D-model (STEP)

  • English
zip 1.9 MB Download


  • English
pdf 54 KB Download

UL recognized certificate

  • English
pdf 530 KB Download

EAC certificate

  • English
pdf 1.6 MB Download

Further software tools for digital product integration into your planning and documentation (such as Eplan macros) can be found at MyPfannenberg.

Ordering details

Ordering detailsDTI 9021
TypeRated voltage230 V AC115 V AC
Standard ControllerArticle number1329304105513293044055

Article numbers for other types on request.


Product Benefits

  1. 1

    Standard cooling unit

    with an attractive price-performance ratio for safe cooling of industrial switch cabinets.

  2. 2

    Tool-free mounting

    by 1 person is possible in less than 3 minutes with 55 % lower mounting costs.

  3. 3


    with large fin spacing enables very long maintenance intervals even without additional Nano coating.

  4. 4

    Large distance between intake and exhaust vents

    for safe air circulation and elimination of hot spots.

  5. 5

    Mounting auxiliary edge

    allows the cooling unit to stand freely when unpacking and before installing, and prevents the unit from slipping out uncontrollably during installation into the mounting cut-out by 1 person.

  6. 6

    Integrated door and failure contact

    for automatic stand-by mode, if the door is open and opening of a relay as a centralised fault indication, in the event of no voltage supply, temperature too high or too low, temperature sensor is defect or short circuit in the air circuit for example.

  7. 7

    Integrated sealing

    finished and perfectly mounted.

  8. 8

    Highest variability

    due to cut-out compatibility for up to 4 performance classes.

  9. 9

    Spring plate

    enables 1 person to install the cooling unit. This prevents it from falling out when unsupervised.