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Operating Manual | Roof-mounted Cooling Unit | Multi Controller (MC) – 230 V | 086100023d 11/80
3 Unit description
3.1 Application description
Risk of injury due to impermissible use of the units.
Improper use of units can lead to serious accidents.
• Only use cooling units in stationary operation.
The Pfannenberg roof-mounted cooling units of the DTT-series are designed for heat dissipation from switch cabinets. The
innovative arrangement of the climate circuits prevents a cold bridge to the switch cabinet,; the risk of condensate forming in the
switch cabinet is avoided.
The evaporator unit in the upper section of the cooling units guarantees trouble-free condensate separation without switch
cabinet contact.
• The cooling units operate with refrigerant that is very difficult to ignite and is not harmful to the ozone layer.
• The DTT-cooling units are only approved for stationary operation.
As cooling units of protection class IP 54, the cooling units are largely dust-protected.
Limitation: Dust can penetrate despite this under permanent exposure. The cooling units withstand splash water but not a
continuous water jet.
3.2 Scope of delivery
The scope of delivery consists of:
• DTT-cooling unit
• Brief operating instructions of the cooling unit
• Accessory kit: According to unit type - e.g. seal, fixing material, electrical plug connectors
• Special accessories if required (e.g. TS2-temperature sensor for cooling units with Multi-Controller (MC))
3.3 Ordering options
Damage to the unit!
Damage to the unit due to non-genuine spare parts.
• Only original parts are subject to the manufacturer’s quality control.
• For safe and reliable operation, use only original parts of the manufacturer.
See chapter "Spare parts and accessories", Page 76for Pfannenberg part numbers for spare parts.
An optional extension by a filter adapter for different filter mats (felt filter, pleated filter and metal filter) is available.
DTT-cooling units offer the additional option of a quick-change frame. It allows easy, convenient replacement of the cooling
units. The cooling units have different sizes.
• For the Pfannenberg part numbers for accessory orders, see chapter "Spare parts and accessories", Page 76.
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