Stulz Tel-Air-2 Series, Operating Instructions Manual

Page: 14 / 72

E/0618/35A/14
3. Components and operating principle
3.1 Layout of components
TLF
–
DISPLACEMENT SUPPLY
The internal air return is located in the roof of the unit. Taken in by the radial fan located at the
bottom of the unit behind the supply opening, the air crosses the treatment filter in the centre of
the unit, is blown onto the evaporator coil and leaves from the opening in the lower front panel.
On TLF size 1, the compressor is beside the electrical panel, over the evaporator fan. On TLF
size 2, the compressor is fixed to the base of the unit, under the evaporator coil and beside the
evaporator fan.
The conditioner is controlled by the electronic board in the electrical panel, located behind the
lower front panel and closed by a protective cover. The display indicating operating states and
parameters and used to modify board parameters is located on the upper front panel.
The through holes for the power cables and the electronic board input / output signal connectors
are located on the roof of the unit.
The condensate drainage system is located at the rear.
TLD
– DOWNFLOW SUPPLY
Lay-out is the same as TLF units, but cooled air is supplied through an opening on the base of
the unit, not from lower frontal panel.
TLU
–
UPFLOW SUPPLY
The internal air return is located in the lower frontal panel of the unit. Taken in by the radial fan
located at the top of the unit behind the supply opening, the air crosses the treatment filter in the
centre of the unit, is blown onto the evaporator coil and leaves from the opening in the upper
front panel.
The compressor is fixed to a support in the centre of the unit, in front of the evaporator coil.
The conditioner is controlled by the electronic board in the electrical panel, located behind the
upper front panel and closed by a protective cover. The display indicating operating states and
parameters and used to modify board parameters is located on the upper front panel.
The through holes for the power cables and the electronic board input / output signal connectors
are located on the roof of the unit.
The condensate drainage system is located at the rear.