TFL 611
22.040/3
Sauter Components
Setting elements
Engineering and fitting notes
The monitor requires a power supply of 24 V AC. A transformer for safety extra-low voltage (SELV)
with separate windings and for 100% duty cycle should be used.
Fuses, switches, wiring and earthing should be implemented in accordance with local regulations. The
maximum permissible cable lengths should be observed.
If the capillary becomes mechanically damaged or there is a leak somewhere in the diaphragm sys-
tem, the frost monitor simulates a low temperature and moves to the 'Frost' position. The same ap-
plies in the event of a power failure or when important electronic components malfunction.
Where to fit
On the warm side of the heating coil (air/water heat exchanger).
Fitting the housing
Direct fitting
Fit the housing (with its integrated fixing holes) onto the wall of the heating coil. Protect the capillary
tube in the air-duct hole with the rubber plugs provided.
If fitting inside the duct, fit the housing to the inside wall of the heating coil, feeding the capillary tube
through a housing hole at the side.
Direct fitting, with test loop for operational test
Fit the housing (with its integrated fixing holes) to the wall of the heating coil, feeding the capillary tube
through a housing hole at the side. Form a test loop with the capillary tube and then feed the capillary
tube into the air duct. Protect the capillary tube in the air-duct hole with the rubber plugs provided.
This method of fitting is unsuitable if the ambient temperature at the test loop (which is outside) can
fall below that at the place of measurement in the air duct (the measuring signal of the sensor always
equates to the lowest temperature, wherever it occurs on the capillary tube).
With accessory 0292146 001
Suitable for air ducts with insulation of up to 70 mm.
Fit the flange onto the wall of the heating coil and feed the capillary tube through the flange into the air
duct.
Fitting the capillary tube
Wind the capillary tube in coils, keeping the same distance, around the whole heating coil and fix to
the fins with spacer clamps at a distance of about 50 mm to the fins (accessory 0303167).
Note
The capillary tube should not be bent sharply. Any bends should have as large a radius as possible.
Fitting notes
The connection terminals are protected against being wired up incorrectly with regard to own voltages
of up to 24 V a.c. There is no protection against incorrect connection of 230 V a.c. mains.
Putting into service
The frost monitor should be put into service and set up in accordance with the instructions supplied.
The frost monitor can be tested for correct operation with a test loop using an ice/water mixture.
The relay output can be checked using the operating-mode switch (in the 'Test' position).
Additional technical data
CE conformity as per
Low-Voltage directive 2006/95/EC EN 60730-1
EMC Directive 2004/108/EC
EN 61000-6-1/ EN 61000-6-2
EN 61000-6-3/ EN 61000-6-4
Key
1
LED indicator (red) denoting risk of frost
2
Potentiometer for setting the frost point
3
Mode switch with three operating modes: Auto, Manu and Test
4
Reset button for resetting the frost status in normal mode
7122040003 06
1
2
3
4
5 6
7
8
9
10
°C
Auto
Test
Manu
Reset
1
2
3
4
B10598
