TF7039GB_A_NOT
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4.5.1.
EXHAUST AIR CONVEYANCE COMPONENTS
Fan
EC centrifugal fan (curved backward) for conveying exhaust air
Differential pressure control
Control module for measuring the generated negative pressure in the intake chamber in relation to the envi-
ronment and corresponding control of the fan speed in order to achieve the adjustable target value.
Air filter
Class G4 air filter to protect the heat exchanger from contamination
Filter monitoring differential pressure switch
Differential pressure switch for warning when exceeding the maximum filter load (contamination)
Smoke detector
Optical smoke detector for detecting smoke and opening the bypass in case of fire
Bypass
Insulated multi-leaf damper (open when not powered) to ensure free air flow in the event of a fire
4.5.2.
REFRIGERANT CIRCUIT COMPONENTS
COMPRESSOR
A hermetic inverter rotary piston compressor that is highly efficient and uses an energy-saving DC electric
motor. Mounted on elastic vibration-damping compensators.
COMPRESSOR INVERTER MODULE
The inverter module infinitely controls the compressor speed using the sensor-controlled power specification
on the system controller. This means the compressor motor is continually monitored and protected from
damage.
CONDENSER (SINK SIDE)
Plate structure (stainless steel, 1.4401), with closed cell insulation material to reduce heat loss
EVAPORATOR (SOURCE SIDE)
Cooling fin structure (copper/aluminium), surrounds the fan in a circle
REFRIGERANT COLLECTOR
A refrigerant collector ensures a bubble-free liquid upstream of the expansion valve in all performance
ranges.
FILTER DRYER
A hermetic-mechanical filter dryer with cartridges made of ceramic and hygroscopic material retains impuri-
ties and any traces of moisture present in the cooling circuit.
THERMOSTATIC EXPANSION VALVE
The mechanical expansion valve with external pressure compensation regulates the gas flow to the evapo-
rator depending on the thermal load to ensure the intake gas overheats to a sufficient degree.
REFRIGERANT SIGHT GLASS WITH HUMIDITY INDICATOR
Used to check the refrigerant fill level and any possible humidity in the cooling circuit.