PAI/PAS 6043

Air/air heat exchanger 20 W/K

PAI: for partially recessed mounting in the door or side
PAS: for outer mounting on the door or side

  • robust steel cover, easily paintable
  • cut-out compatible with DTI/DTS 9041
  • mounting-friendly seal, no elaborate reworking of the mounting cut-out
  • integrated thermostat for temperature control
  • additional thermostat for excessive temperature warning
  • maintenance-free
  • large distance between intake and exhaust vents, safe circulation within the electrical enclosure due to long passage of air, therefore hot spots are eliminated

protection system

temperature alarm

temperature control

partially recessed mounting (PAI)

side mounting (PAS)

cut-out compatible to DT | A/W units

tool-less mounting (PAI)

Technical data

DataPAI/PAS 6043
Rated voltage ±10 %AC 50/60 HzAC 60 Hz
230 V 1~115 V
Specific cooling capacity20 W/K
Unimpeded airflow (free flow)internal240 / 280 m³/h280 m³/h
external240 / 280m³/h280 m³/h
Ambient temperature–25 … +55 °C / –13 … +131 °F
Degrees of protection
according to EN 60529
IP 54towards the electrical enclosure if used as intended by the manufacturer
IP 34towards the surroundings 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 PAX pdf 99 KB Download
Manual PAX pdf 43 MB Download
Manual Filter Adapter PAX pdf 350 KB Download
TechnDataSheet PAX 6043 pdf 180 KB Download
Description Language Type Size Download

Product sheet

  • English
pdf 1.7 MB Download

Data sheet

  • German
  • English
  • French
pdf 210 KB Download

3D-model PAI (STEP)

  • English
zip 1.4 MB Download

3D-model PAS (STEP)

  • English
zip 1.3 MB Download

Cut-out PAI (DXF)

  • English
zip 3.9 KB Download

Cut-out PAS (DXF)

  • English
zip 4.2 KB Download

Ordering details

Ordering detailsPAI 6043PAS 6043
230 V ACArticle number1299111105512981111055
115 V ACArticle number1299111405512981114055

Options / Accessories

AccessoriesPieceArticle number
Filter adapater (RAL 7035)118060200000
Fleece filter518061600000

Product Benefits

  1. 1

    Integrated sealing (PAI)

    finished and perfectly mounted.

  2. 2

    Tool-free mounting (PAI)

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

  3. 3

    Large distance between intake and exhaust vents

    for safe air circulation and elimination of hot spots.

  4. 4

    Mounting auxiliary edge

    allows the heat exchanger 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.

  5. 5

    Service friendly

    due to direct access to the fans, thus 80 % shorter repair times.

  6. 6

    Optional pre-filter

    upgradable with aluminium, nonwoven or fluted filter, for applications with heat exchangers in different ambient conditions.

  7. 7

    Highest variability

    due to cut-out compatibility for 5 performance classes and to Pfannenberg cooling units and air/water heat exchangers.

  8. 8

    Integrated thermostat

    for temperature control; additional thermostat for excessive temperature warning and maintenancefree.

  9. 9

    Spring plate (PAI)

    enables 1 person to install the heat exchanger. This prevents it from falling out when unsupervised.