Fan Section; Air Filters; Heat Exchangers / Steam Humidifiers; Field Devices - Trane CCEB Installation Operation & Maintenance

Air handling units

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11.3.3 Fan section

Refer also to chapter 9.2 (Fan / motor group).

Belt: It's only allowed to use electrically conductive, flame retardant and self-extinguishing

belts (ISO 9563 or ISO 1813).

Use original spare parts.

In addition to these data, the guidelines included in the operating instructions of the fan and

motor manufacturer are to follow.

It's only allowed to use electrostatic deductive filter.

Use original spare parts.

For filter types that are equipped with potential equalization cable, each filter cell must be

connected to the potential settlement with the AHU in the fixed-mounted metal filter frame

using self-tapping screws or bolts.

To prevent the formation of an explosive atmosphere by stirring up of dust deposits, the

equipment has protective systems and components designed to avoid deposits of com-

bustible dusts as far as possible. Therefore, for all components corresponding service

openings are provided.

Periodically the AHU shall be cleaned (depending on the amount of dust) from dust.

The in the data sheet indicated heat exchange medium temperature and the

steam humidifier surface temperature shall not be exceeded. Otherwise, the

specified temperature class is no longer valid - danger of explosion! -and the

declaration of conformity loses its validity.

On site assembled field devices must comply the ATEX class specified by TRANE.

The electrical components (switches, lights, sensors, motors, etc.) must be approved for

operation in explosive atmospheres and must be equipped with an appropriate marking.

The cabling must meet the relevant standards.

Appropriate potential equalization has to be prepared.

Outdoor units must be equipped with a professional lightning protection system and all

metal parts have to be connected to the ground conductors.

For indoor units all electrically conductive parts must be protected with a professional

grounding measure (potential equalization). By derivation of lightning currents, this

measure prevents the formation of ignition sources.

Pipelines must be considered as a potential ignition source, since their temperature can

rise up to 110°C.

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